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How to solve the die-casting and other casting Shrinkage
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cast iron foundry – China Manufacturer
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Die casting and casting the existence of shrinkage cavities and the pine is a common phenomenon, there is no method to solve this problem? Answer should be yes, but it will be what is it?
Die castings of shrinkage cavities and loose exist
The die casting shrinkage cavities are bound to exist in only one loose phenomenon that is due to the metal melt filling the liquid into a solid phase contraction phase transition. Die casting solidification characteristics is cooled from the outside, When the casting wall thickness is large, the internal inevitably produce Shrinkage problems.
So, die castings, especially for Heavy die-casting parts, the existence of shrinkage shrinkage problem is inevitable, is not a solution.
2 the only way to solve Die Casting Shrinkage defects
Die Casting Shrinkage can not be completely resolved from the die casting process itself, to solve this problem, only to go beyond the process, or to find a solution from outside the system.
What is this approach?
Process principles to solve the casting shrinkage shrinkage defects only in accordance with the thinking process by feeding the casting solidification process of phase transition contraction, is a natural physical phenomenon, we can not reverse this natural phenomenon law, but only to follow its rules to solve this problem.
Feeding two ways
The feeding of the casting, there are two ways, one natural feeding First, forced feeding.
To achieve a natural feeding, the casting process, it is necessary to achieve the solidification process measures. Many people intuitively think that, using low pressure casting method to be able to solve the shrinkage of the casting shrinkage defects, but the fact is not so. the use of low pressure casting process, does not mean that you can solve the casting Shrinkage defects, if the low pressure casting system is not equipped with the feeding process measures, then this means of low pressure die casting production out of the rough is also possible that one hundred percent Shrinkage defects.
Due to the characteristics of the die casting process itself, to set up the natural \"order of solidification process measures are more difficult, complex and most fundamental reason may be,\" solidification process measures, the general requirements of casting a relatively long solidification time, which, with the die casting process itself is somewhat contradictory.
Forced coagulation of the feeding of the most important feature of coagulation time is short, generally and \"solidification\" quarter or less, so on the basis of the die casting process, the addition of forced feeding process measures, with the pressure casting process, the characteristics of a good solution to the die casting Shrinkage problem.
Compulsory reduction of two levels: extrusion feeding and forging complement reduction
Forced feeding of casting can be achieved with two levels is a basic casting shrinkage can be eliminated to the extent of shrinkage defects, one can make rough internal to achieve the degree of crushing grain or forging state organizations. If you want different words to express the varying degrees of these two words, then the former we can use the \"squeeze feeding\" to express the latter, we can use \"forging feeding\" to express.
Give full attention to a way of understanding a concept is to distinguish the feeding is a direct means, it can not be done indirectly. Process, we can have a process parameter to express, which is feeding the pressure \".
Physical principles, the concept of pressure both cases, there may be a liquid occasions, \"Archimedes\" occasions, in order to distinguish, we define it as \"liquid pressure\", while another appears In the solid state occasions, we define it as \"solid-state pressure should be noted that the pressure application of the concept of two different state conditions. if we are confused, there will be a big problem.
\"Liquid pressure\", it applies only to the liquid system, the direction of the pressure is passed, you can turn, but the model does not apply in the solid phase system.
The die casting feeding, between semi-solid and solid state, the value of the pressure, the direction is a vector pressure in the same direction, its direction and imposed feeding force.
So, that kind of thought that by increasing the die casting machine pressure shot cylinder pressure by increasing the injection filling pressure Die Casting Shrinkage, and that the injection pressure can be passed to the whole process of casting solidification stage, achieve casting feeding of ideas, is completely wrong.
By the first die-casting mold filling, after forging feeding \"of the process is an effective way to solve the casting Shrinkage defects, but also a last resort.
First die-casting mold filling, after forging the feeding process, we can die forging process referred to as its essence, is a casting and forging process, the die-casting process with liquid forging process combining the most effective combination of features of these two devices together to complete the process.
Continuous casting and forging, die forging equipment, the appearance of ordinary vertical or horizontal die casting machine is very similar, in fact, die-casting machine, hydraulic forging the head can be coupled with the largest forging feeding a force equal to the maximum clamping force of the die casting machine.
It should be noted that the nominal parameters of this die forging machine is the most important, is not a clamping force, but forging the feeding force, which is equivalent to a four-column hydraulic press forging force meaning, which is in the device selection must be fully attention or bought a clamping force, but forging make up a the contractility small die forging equipment, its use value is significantly impaired.
The use of die forging machine production of rough, high dimensional accuracy, surface finish is also very high, the equivalent of more than six machining methods can achieve the accuracy and surface roughness level, it has been attributed to the limit shape —- The process means than cutting a small margin forming \"process a big step
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How to do precision casting
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carbon steel casting – China Manufacturer
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Casting temperature measurement of molten steel in the production process the best solution? precision casting of molten steel,
molten iron temperature is very strict, but most of the casting plant because of the size, cost considerations are not the
temperature, but with work experience to determine the furnace the temperature of molten steel. This casting has caused more
breakdown product defects such as mold, pouring less than other issues. Greatly reduce the yield. Indeed, the cost of using more
expensive thermocouple, addition of precious metals prices even head accuracy is also a problem. Even with a head twice, but few
have measured the temperature did not reach the second, all with experience to judge. There is a casting special non-contact
thermometer HC-16 special steel precision casting temperature of the thermometer may well be a better choice. First, the casting
of non-contact, no consumables, fixed aligned mouth connected to the power supply after the continuous use temperature of the
melting process at any time is displayed. Second, precision casting and high accuracy. And different from his previous infrared
thermometer is fixed, to avoid the hand-held thermometer measurements of shaking caused by the beating, more importantly, HC-16
precision casting smelting, casting hot as the temperature control system is a combination of Infrared temperature measurement
and thermal imaging technology, a new foundry, smelting with the thermometer. The entire system with full radiation vanadium
oxide sensor technology (VOx) a combination of optical techniques, the use of uncooled micro-heat radiation precise temperature
measurement. HC-16 temperature measurement system to better resist the electromagnetic field, smoke, dust interference. Scanning
of the casting temperature and exclude steel, hot metal surface of the scum interference, so that more stable and accurate
measurements, coupled with robust housing, making it suitable for harsh working environment. It with precision casting steel
furnace or hot metal for each continuous monitoring. Finally, the useful life of ten years or so casting, high temperature
casting cost is indeed a good choice.
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China Aviation Industry Institute successfully developed C919 aircraft materials such as rubber windshield seal main
Institute of AVIC CASC number of technical difficulties to overcome, in time for the large aircraft nose engineering prototype C919 provides the main pieces of transparent windshield, side windshield transparent parts, transparent windows and rubber seals parts to ensure nose engineering prototype of the main structure of C919 acceptance by the node and the C919 aircraft engineering prototype development progress.
CASC hospital since September 2009, received the C919 nose engineering prototype transparent pieces of rubber seals manufacturing technology and the task has been set up research and development group set of intellectual research, the use of edge design, while manufacturing, while testing the "triangular" extraordinary work methods, objectives and processes adhere to the progress of the task priority, breaking the aluminum silicate glass chemically enhanced, targeted and transparent pieces of glass double curved shape, laminated and large-size CNC machining and the overall shape of rubber seals and many other key technologies. The first time, the domestic large-size, surface chemically enhanced primary aluminum silicate glass windshield and large-size high-performance, dual-directional glass surface slightly cross-linked transparent pieces of laminated windshield and side seals of the self-developed performance indicators to meet the C919 project Prototype technical conditions required for the realization of a large customer self-transparent material to protect the domestic laying a solid foundation.
From raw material preparation, molding and processing to a transparent, CASC hospital only two and a half months to complete 17 sets of molds and left / right main windshield, left / right side of the windshield 4 sets, 6 sets of windows development and acceptance of delivery, the C919 nose engineering prototype of the main structure of the node passed the inspection by providing an important safeguard.
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The cutting characteristics of cast iron
In general, the higher the hardness and strength of cast iron, metal cutting, the lower, from the blade and tool life can be expected lower. The production of cast iron for metal cutting most types of metal cutting its generally very good. And structure of metal cutting, hard machining pearlitic cast iron its greater difficulty. Flake graphite cast iron and malleable cast iron has excellent cutting properties, but ductile iron is poor.
Encountered when machining cast iron main types of wear: abrasion, adhesion and diffusion wear. Mainly by the carbide abrasive, sand casting parameters and hard skin debris generated. BUE bond with wear at low cutting temperature and cutting speed conditions occur. Ferritic cast iron some of the most easily welded to the blade, but this can increase the cutting speed and temperature to overcome.
On the other hand, diffusion wear and temperature, generated at high cutting speed, especially when using high-strength cast iron grades. These grades have a high resistance to deformation capacity, resulting in a high temperature. This cast iron and tool wear and the role of the between, which makes some of the iron required ceramic or CBN (CBN) cutting tools in high speed machining, in order to get a good tool life and surface quality.
Generally required for the processing of a typical cast iron tool attributes are: high fever hardness and chemical stability, but also with the process, the workpiece and cutting conditions; requires cutting edge toughness, thermal fatigue, wear and edge strength. Satisfaction depends on cutting cast iron wear how to develop cutting edge: rapid thermal blunt means leaving the cutting edge cracks and gaps in premature fracture, broken parts, surface quality is poor, excessive waviness, etc. Normal flank wear, balance and sharp cutting edge is generally required to do.
Yancheng is committed to creating the world center of the valve industry.
The rapid development in recent years, the size of Yancheng valve sales of $ 3 billion in 2006, strong growth to $ 5.5 billion in 2007, is expected in 2009 exceeded 60 billion
yuan in 2010 exceeded ten billion yuan for major off. The industry believes that, following the Zhejiang Yongjia, Longwan after becoming China s Jiangsu Yancheng another large
valve manufacturing base.
Yancheng valve early start in industrial development, reform and opening up, the local government and increase support for efforts to encourage private enterprises to focus on
the development of the valve industry, thereby speeding up the Yancheng valve industry. The region now has about 400 large and small companies around the valve, of which
more than 110 enterprises above designated size valve, basically forming a cluster with specialized production pattern. In addition, production and export Yancheng valve
manufacturers are also increasing, two or three national development from the beginning to now have large-scale export-oriented enterprises with more than 50, more recent
years, foreign sales to 40% to 50% annual rate of growth, products sold in Europe, America, Southeast Asia, the Middle East and other countries and regions, exports from the
previous small-caliber valve, gate valve gradually transition to the low-end products such as large diameter valves, ball valves and other higher value-added products.
With North America, Western Europe and other developed countries to increase procurement in Yancheng joint venture production of valves and valve strength, Wenzhou,
Yancheng valve enterprises to accelerate the transfer, there are 15 well-known recent valve business Development Zone, Yancheng business presence, so that further growth of
the local valve industry.
Recently, the government made money Yancheng Yancheng fight for the “World Valves Industry Center” vision, Yancheng Economic and Trade Commission also proposed the
“starting point Yancheng valve industry development plan preparation, strengthen construction of the park, to undertake industrial transfer valve the establishment of intermediary
organizations valve industry, construction, valve industry logistics platform to promote the construction of the valve business e-commerce, to create Talents, the valve industry to
accelerate technological innovation, speed up to cultivate leading enterprises, promote the rational allocation of resources, regular valve China Yancheng fairs, to strengthen the
valve to open up international markets, to convene the World Conference of the valve center named “10 measures, and decided to create castings, forgings, pig iron, coke, steel,
seals, standard parts, pneumatic parts, hydraulic valve parts, etc. industry-related products distribution center supporting Jackie Chan for the valve to form a complete industrial
chain basis, eventually leading Yancheng into the international level on behalf of the international valve industry production base, procurement base and R & D base, started
“Yancheng valve” the brand.
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Yangjiang hardware characteristics of economic development, pen knives, scissors and brand polish
In recent days, Scissors Yangjiang hardware industrial development caused the provincial experts and media attention, the Nanfang Daily Group sent a special report to the city to carry out interviews and reports, the Provincial Academy of Social Sciences of experts to the city to conduct special investigations of Yangjiang hardware Scissors industry highly. As one of the city s traditional industries, metal knives, scissors and the development of industry has accumulated years of experience, industry bigger and stronger influence on the industry, development of special economic Yangjiang has become an important part.
Sit tight in the leading position in the national industry
Yangjiang knives, scissors and a long history. 1400 years ago, can produce a variety of civilian civil Yangjiang knife, opened the history of Yangjiang, the knife industry. Since reform and opening to join the metal knives, scissors and private capital venture industry is preferred. Previous municipal government attaches great importance to the development of industrial metal knives, scissors, knives, scissors and industry put the metal pillar industries with local characteristics Yangjiang important position, a range of policies to promote the healthy and rapid development of industry. In recent years, has built a national household scissors and tools for Quality Supervision and Inspection Center of metal, the formation of Yangjiang, South China University of Industrial Technology Research Institute, the construction of technological innovation Scissors Yangjiang hardware platform, introduced the “knife on accelerating the Yangjiang hardware cut views of the implementation of industrial development “, planning a professional parks and other hardware scissors, knives, scissors guide Yangjiang hardware industry relying on technological progress, the adjustment of product structure, expand business scale and enhance the comprehensive strength.
In October 2002, the first China (Yangjiang) International Hardware Fair held in the city knives, scissors, knives, scissors Yangjiang hardware products to global customers began to show their new image. As a solid industrial base to support the knife Fair has been successfully held 9 th, Scissors Yangjiang hardware industry also rely on export-led export-oriented, embarked on a development fast track. Over the past 10 years, Scissors Yangjiang hardware industry has shown rapid development trend, the average annual output value increased 25%, China chopper center, China center scissors, knife center of China, China s beauty make-up tool center, China center casters, scaffolding central China, China Scissors machinery manufacturing centers GuoZiHao signs have settled Yangjiang. In 2008 the global financial crisis, Scissors Yangjiang hardware industry calmly and quickly out of the woods, the steady expansion of industrial scale, and further consolidate the industry leader in the country. 2010, the city s industrial output value 22.3 billion yuan metal scissors, the size of the city s total industrial output value of more than 32%; the city s total industrial production knives, scissors about 70% of national output, exports account for about 85% of national exports.
Bao Jianfeng from sharpening out, plum blossom from the bitter cold. Scissors Yangjiang hardware industry again experienced fluctuations in domestic and international economic environment, seize the opportunity to laugh at adversity, head forward. Come from hard work in the thorns, the innovation beyond the self, metal scissors Yangjiang industry has become the most typical, most mature, most active, the most prominent contribution to the pillar industry of the city s economic and social development plays an important role.
Regional industry clusters developing mature
Scissors into the hardware business gathering in the industrial park, you will here, dotted with factories, cooperative and orderly division of labor, a complete set of industry and praise. After years of development and accumulation, Scissors Yangjiang hardware industrial scale become more prominent, attracting about 15 million employees, has become the region s largest and most complete industrial chain of industrial clusters, and even the most mature of the traditional Guangdong processing industry one cluster.
City Department of Industry and Information Bureau statistics show that last year, the city s metal knives, scissors and more than 1,300 enterprises, the domestic market covering all provinces and more than 160 countries and regions. This is more than 1,300 enterprises, including the production of knives, scissors, pliers more than 900 enterprises, more than 100 enterprises producing metal type, supporting more than 300 enterprises, the product of more than 3600 kinds. Stainless steel strip from smelting, knives, scissors machinery manufacturing, mold making, casting parts, accessories processing, heat treatment, plating, packaging to technical research and development, e-commerce, logistics and distribution, a complete industrial chain, metal knives, scissors and enterprises constitute a complete and mature industrial chain, and gradually form a specialized division of labor, social cooperation and common development of the production pattern. As the ever-increasing industry gathering, Scissors Yangjiang hardware industrial cluster has been selected for China s Top 100, has been identified as national and provincial industrial base in China and Guangdong Province Scissors Torch Program Industry Base metal scissors, metal scissors, Guangdong Province, industry cluster Upgrade Demonstration Zone, Yangjiang, Guangdong Province, eastern towns to become professional town hardware tool products.
With the scale of the industry constantly, gradually increase the industry gathering, Scissors Yangjiang hardware companies step by step to achieve a stronger and bigger. In recent years, the industry set up in Guangdong, Circle Scissors, Guangdong Silver Eagle Co., Yangjiang knives, scissors and three sub-18 enterprise groups, cultivated Everlight, Silver Eagle, 18 children, Sony, Kim Heng, Jinhui, Shun, flywheel, strange is, the third brother, Kang force of more than 10 billion yuan output value enterprises. This is more than 10 companies over a hundred million metal scissors the front ranks among the nation s comprehensive strength. Product mix also had a single kitchen cutlery, based on the expansion of the multi-purpose knife, knife set, multi-purpose pliers, bottle opener, cutlery, baking tools, screws, castings, wire, industrial casters, decorative swords, police tool , garden tools, beauty equipment sets, construction scaffolding, hunting ladder, folding trolleys, industrial vision from the “small knives, scissors” gradually into the “big hardware.”
Promote transformation and upgrading to achieve “gorgeous turn”
Scissors Yangjiang hardware industry through the golden years, as the economic environment changes, the adjustment of industrial policy, how to jump a step further, and create new glory? Held at the end of May this year to upgrade the city s metal scissors have been made on the mobilization of the General Assembly: to promote transformation and upgrading, to achieve magnificent turn.
In fact, there are many unwilling people, Yong forefront of the business one step ahead, as the Scissors Yangjiang hardware industrial transformation and upgrading of the benchmark. To develop independent innovation, invention has been committed Scissors Yangjiang hardware companies continue to upgrade the main driving force in recent years, the emergence of a number of established industry-wide provincial and municipal enterprise technology centers, research centers, and vigorously carry out independent innovation, commitment invention active national patents and foreign patent applications of enterprises; more business from the product structure optimization to find a breakthrough, ceramic cutting tools, construction alloy template, the ancient blades and other products innovation, “No I have, I have excellent, excellent people I am special “product development philosophy become very popular; marketing strategy in the transition, the domestic markets and export walking on two legs more and more enterprises; brand strategy is to strengthen, more and more national, provincial successfully created brand name standard , scale and benefits for enterprises of double harvest.
Policy also force the hand of support. The city s industrial transformation and upgrading hardware Scissors General Assembly, in order to upgrade to the main line to raise the overall quality and efficiency of industrial development, to ensure that metal knives, scissors and industrial structure was optimized, the development of an apparent change in the industrial core competitiveness will increase markedly, significant market share upgrade. To “12 5″ end, the city s industrial output value of industry, metal knives, scissors and reached 600 billion yuan, up 25%, the output value 50 million businesses, over 10 billion business for more than five, three or so listed companies, to out of a meet market conditions, with distinct regional characteristics of the industry cluster development in new ways. To this end, the municipal government will continue to increase efforts to support the hardware industry, knives, scissors, knives, scissors and hardware to speed up trade Yangjiang City, River City Silver Ridge and two metal scissors Yangdong Vientiane professional park s construction, further improve the metal scissors industry R & D center, product inspection and testing center, and guide the city s colleges and universities expand research cooperation enterprise hardware scissors, knives, scissors and hardware companies for the city to build a more comprehensive service platform.
Riding a boat behind. Scissors Yangjiang hardware industrial development in the new round of economic tide to achieve the “magnificent turn,” must self-pressurized, metal scissors with leading global companies to benchmark, identify new goals, new challenges and move towards a new height; continue to strengthen independent innovation and accelerate the pace of transformation and upgrading from the current sitting of the national daily hardware Scissors production center, to enhance national and global metal knives, scissors and corporate R & D center, product testing center, exhibition center and product distribution centers .
Scissors Yangjiang hardware industry, the next “golden years” worth the wait.
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Three stainless steel faucet trends contrast significantly Mami
I recently to understand the current bathroom faucet hardware store marketing, sales and marketing, and found from the most common twenty or thirty dollars to hundreds of thousands of dollars of high-end brands, use different brands of kitchen taps the same price disparity.
With the stainless steel faucet manufacturing process in the country gradually mature, whether in production or on grade, stainless steel faucet has greatly improved, although a smaller share in the domestic market, but because of their health, environmental protection, durability, etc., in recent years more and more consumers, leading gradually to seize market share copper, stainless steel bathroom faucet has become the industry s development trend.
In addition, in recent years, the whole bathroom space with a big bathroom brands strive to pursue the development of the object, the traditional ceramic sanitary ware brand in order to obtain a bigger market pie, fully integrated bathroom, hardware accessories and the overall design of the advantages of space, a bathroom industry, another major growth market. Domestic faucet manufacturer is also by virtue of this channel, began to enter the industry in high-end brand market.
Selling style VS selling Quality
In the brilliant plumbing store, I see the tap is generally two or three hundred of the price within the individual leading to more high-end antique 800 yuan. Both in the shape of the basin leading a price of almost $ 170 while the next is up to 360 yuan, Purchasing Guide tells us: “In fact, a closer look, they are different, this thick, a lot of your waist to use it is better quality, but also our latest styles, of course, expensive. ”
The author based in China Sanitary Ware store has also been marketing a similar response, except that they show the hall where the balance of up to two taps, the taps in the various showroom models accounted for nearly half of the area, the price difference also great, from the most common twenty or thirty dollars to nearly thousand dollars, but most are still concentrated in the four hundred dollars price range or less. This service booth explained: “Because this is based, so all models will be produced here displayed, there is we have our own factory, has a production base in brilliant, so many styles, like some stickers card companies, they are often less style. “I asked a high price of the product to the store, she said these are new companies, but also the most popular design on the market, because of the high cost of the new design, Although the price of your points, very popular with consumers. She said the company s product positioning in the mid-range, cost is particularly high, the store selling the product is already discounted price, based on the play, which is easily accepted by consumers.
In another brand of faucet did not identify the store, the price tag most of the above within the two hundred yuan, when asked about the actual retail price, the boss did not give a fixed discount, the price of each style but their random given, if the wholesale price, but also cheaper.
Compared with ordinary leader, some well-known brands of faucets pay more attention to product quality and practicality. Benefit of the bathroom inside the store, I see the show table shows some of the taps, according to the manager explained, because the decoration to be upgraded, and now the store s display products can be sold directly, and 4.5 fold for special treatment, if usually in the warehouse getting goods at least 30% off. The remaining taps, price is generally six or seven hundred. Small a basin faucet, not even the special features on the surface, looks very ordinary, the price of three hundred yuan. When I asked why and she said it was determined the quality of products, there is the after-sales service. “We have a shelf life of five years, one year warranty period can, in fact, to spend ten years our products have no problem, and you see those styles actually used cheaper products will soon be broken up. “manager of its interpretation of the price to do so.
TOTO s high prices in the store brand is far more prominent. I saw in the store, the same cabinet basin faucet, where the lowest bid should be more than 1,000 yuan, or even your $ 37 million, and ordinary shower faucet is a thousand dollars. According to Miss Ho Purchasing Guide describes the store, some one thousand of those three taps are imported from Germany, the price of high tariffs and freight with a great relationship, and those who are a little cheaper in domestic production. Miss Ho also introduced several leading production in Dalian, those leading style are quite satisfactory, and did not form a complex process, it seems very common. When asked why such a simple style to sell expensive, the Miss Ho smiled and explained: “Our product does not depend on style design, but by the quality of which several are more like the classic style, without too much popular colors our company s factory produces only one of each thing, as you just saw the faucet on only in Dalian production. production process, every process is rigorously checked, so it is highly normative. “In the shop in a circle tour carefully, I found that the bathroom products are% off store, discount store than the other to be higher.
According to industry analysts, squeezing the face of foreign brands, domestic enterprises need to tap the face of how to keep the domestic market share and continue to expand the international market the dual problem. In a buyer s market, products, technologies, services, three essential, which is the core competitiveness of the brand. In fact, do not have to import high-end, not low in China, many foreign companies looking for Chinese OEM is an obvious example. But in fact, Chinese-made products are used in high-end faucet place is really rare.
“Lack of high-end brand for an industry, not a good thing. Take the leading industry, we all crowded on the boat to middle and low, there must be part of the business was packed badly beaten. Competitors, and more , and we are obsessed with the price war, the one who would be willing to price sales. “a dealer friend told the author. Most domestic plumbing brands still remain competitive in the price level, even some famous brand enterprises, largely rely on elegant, fashionable and popular design to raise prices, and improve product quality and grades improved, and companies are seems weak and vague goals.
Brass faucet Stainless Steel Faucet VS
With the stainless steel faucet manufacturing process in the country gradually mature, regardless of manufacturer or grade, stainless steel faucet has greatly improved, but also in the material, stainless steel, healthier, more environmentally friendly 100% recycled. Stainless steel faucet in the country is an emerging product, although a smaller share in the domestic market, but because of their health, environmental protection, durability, etc., in recent years more and more consumers, and as manufacturing technology maturity will also become increasingly popular, leading to seize more market share copper, stainless steel bathroom faucet will become the future industry trends.
There are four main faucet material, namely copper, PVC materials, cast iron, stainless steel, while the domestic market, mostly in the high-end faucet copper as the main raw material. According to experts, often leading casting of copper and copper content of lead is 4% -8%, if the tap when not in a long time, will produce the green patina wall, which released the existence of substances may lead to the water inside, drinking lead too much water can cause lead poisoning, not only will affect the growth of intelligence of consumers, but also seriously affect the health impact on children will be even greater.
Copper rust easily, so the surface is usually copper plating, that is, the surface layer of nickel or chromium plating, and plating the pros and cons depending on the quality of its plating, thickness, will gradually peel off. Fast by year, slowly losing those 3-5 years, surface gloss, from the pits, and finally plating layer peeling off, exposing the rust, affecting the appearance and use, requiring constantly changing, which resulted in waste of resources. The electroplating wastewater generated by the environmental pollution is very serious.
In our interview, found that almost all businesses have said they are copper material made of copper taps, according to industry sources said some of his peers, in fact, many companies do not pass quality copper material, copper faucet because of some middle and low electroplating process is poor, does not take a year or two out will fall off that layer of plating layer, so it is prone to rust.
I understand that, do not tap the surface of stainless steel plating, which requires only surface polishing, grinding and other physical treatment process, and maintain a permanent bright shiny silver, never rust, more environmentally friendly and durable, and easy to clean.
In addition, copper is expensive, and the price is volatile, and has been the rise. A professional production of total faucet business Kwong this bluntly: “Now for us, the impact of rising copper is the biggest factor in our little yard, do OEM, or rely on a little bit of difference to maintain. “Copper prices, if you tap along with prices, may lead to loss of customers, not price increases profit margins narrow and difficult to sustain an OEM type companies, which also contributed to many strong brands began to enter the stainless steel faucet product development and production.
Benefits up to sanitary a company official said, their use is the leading copper A-59 copper, the price of each quarter in 45000-50000 yuan float, and 304 stainless steel (not steel) cost about 34,000 yuan / ton , the current domestic and foreign copper taps are the most high-end, more high-end market positioning. Compared to copper, stainless steel faucet relatively hard material, waterways bad casting, and sealing is not good, but look more beautiful and beneficial to human health, hygiene and environmental protection, but also more durable.
It is reported that many domestic metal plumbing manufacturers as early as five years ago, started to develop stainless steel faucet, but the stainless steel its hardness, toughness, solvent casting and machining in copper is much harder than the high cost. These manufacturers are either not yet developed, or has abandoned the development, or only one or two styles developed. In the international brands, Hansgrohe, China Yida and other brands already have the production of stainless steel faucet.
A leading corporate responsibility argue that the taps on the domestic market, mainly copper, zinc alloy and plastic more, stainless steel faucet and did not get a lot of production use, because the stainless steel faucet brass faucet manufacturing process as simple as that. Stainless steel faucet casting process is very complex and expensive consumables. Moreover, the leading stainless steel casting process development in China was 10 years, manufacturers less, difficult.
Production center of the outlet of a sanitary industry sources said the stainless steel faucet in the outlet does not yet possible to get a lot of production, mainly to cost you, not many companies can afford such a risk. More than a thousand companies in the outlet, but one or two large scale, extensive use of copper process can only lead to over-water production. Because all the pipes with copper is very expensive, and now generally used outlet “over the water of copper”, that is, outside the protective layer made of zinc alloy, which touch on the use of copper water pipe.
Another name also points to the whole of the professional managers of local tap market development status of small businesses with copper, a large number of large companies also use copper. Now in China, the leading copper production is the most commonly used materials. How many is not the production of stainless steel, but there is no direct production of the whole number of companies are leading zinc alloy, unlike some places overseas, many of them directly over the water with zinc alloy. Stainless steel expensive, not many production plants, do not need to say, zinc alloy plating well, it is difficult to wear, in general no problem with a six or seven years.
The author investigated a number of building materials market, found that most stores are brass faucet, only a few home is dedicated to selling stainless steel faucet, there is still a part of the imported products. But some domestic production of stainless steel faucet brand seems to have quite a mature technology, not only in the performance of the design style was very innovative, but also in the varieties covered basin faucet, Caipen faucet, bathroom cabinet faucet, shower faucet in various fields such as traditional leader .
Moen bathroom in the store I see here the price of stainless steel faucet normally between $ 1500-2000, and the store price of copper tap between 800-1200, but listen to the store s shopping guide introduction, where the product are produced in the country, as has production bases in Guangzhou, the price is cheaper than the imported products, but due to stainless steel in the domestic consumer awareness is not high, and whether high or low-end brand, customer or choose more cost-effective, so we hit the store copper is 30% off retail faucet, and stainless steel although the cost is higher, but can only hit 4.5 fold, in fact, compared with the price of two products are similar, mainly to see what products their favorite customers.
Branding and OEM road
From the 1990s onward, due to mainland China to speed up the process of opening up, Chinese and foreign manufacturers of large tap China s huge market potential and advantages of resources, competing to increase investment in mainland China. There are a number of international brands in China do OEM, and gradually cultivated a Chinese manufacture and supply of high-end bathroom chain. Today, some domestic bathroom plumbing business has grown up, have moved to a foster their own brand development, such as the brilliant, nine, animal husbandry, the buildings, Shenluda the bathroom plumbing business established in the domestic taps market position, while some of the traditional emphasis on ceramic bathroom brands in the use of their fast growth of the channel edge, popular in recent years by means of the overall market to expand the concept of bathroom taps market for development.
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Yu Xin Austria can supply a variety of adhesive surface engineering
Beijing Olympic Yu Xin Surface Engineering Technology Co., Ltd. can be built in 1992, is a research and development, production and sales, and promotion of technology in high-tech enterprises. Is the transformation of the capital part of the university research base, high-tech enterprises in Beijing, Beijing quality control unit, Beijing 12365 first batch of registered enterprises, the quality of key propaganda unit 3.15 in Beijing, China Communications Enterprise Association mechanical parts repair center, the Chinese equipment Management Association mechanical parts repair center, Chinese Mechanical Engineering Society of equipment maintenance branch of mechanical parts repair center.
Corrosion-resistant plastic repair
AK02-4 system uses corrosion-resistant plastic repair of modified binder with a variety of high-quality corrosion-resistant powder scientifically formulated two-component room temperature curing reaction is made of adhesive weight ratio of A: B = 5:1, layer after curing was black, bonding strength up to 48Mpa, oil, water, acid, mainly used in corrosive media, such as acid-base parts working container, glass-ceramic reactor repair and pre-coated protective layer (the main resistance to inorganic acids), the use of temperature -60 ℃ ~ 160 ℃
Install anti-sticking coating liquid temperature
stainless steel investment casting
This agent is mainly suitable for working in high-temperature components, such as bolt and nut connection, bonding with each other in order to prevent the demolition, may be resistant to 500 ~ 600 ℃ high temperature.
Anti-friction self-lubricating plastic repair
AK02-3 anti-friction self-lubricating plastic systems using high-quality repair of modified binder and special alloys, ceramics and high strength powder antifriction agents, mainly to reduce the wear and abrasion resistance combined with the optimization formulation, overall performance is very excellent antifriction adhesive, the weight ratio A: B = 5:1, after curing of the adhesive layer was black, the bonding strength up to 54Mpa, reduce wear, abrasion resistance, oil resistance, water resistance, good dielectric properties, mainly for hydraulic cylinder, strain and wear of machine repair guide can also be used for the body, gearbox, bearings and other parts of the wear and strain hole repair, curing adhesive layer 4 to 5 hours for turning, milling or hand grinding process , can be put into use after 24 hours.
AK02-1 repair adhesive friction wear
Product Features:
Room temperature for 5 to 10 minutes to locate the beginning of curing adhesive to seal plugging effective, 6 to 10 hours up to the maximum strength, toughness is excellent. Shear strength 23Mpa; impact strength of 28 ~ 32KJ/m2; peel strength of 4.3 ~ 5.5KN / m; temperature -60 ℃ ~ l21 ℃; (short-term high-temperature capability of 177 ℃)
Scope:
(1) adhesive metal materials: aluminum, steel, iron, stainless steel (not suitable for copper);
(2) adhesive organic material: ABS, polycarbonate, polystyrene, PVC, rubber and wood;
(3) inorganic adhesive materials: glass, ceramics, stone, and the same kinds of dissimilar materials; 2, is widely used in modern manufacturing: automotive, electrical components, equipment, instruments, aircraft, machine tools, satellites, spacecraft and other industries of the species of the same species and bonding of dissimilar materials; quickly fill the casting porosity, blisters and other defects;
(4) maintenance industry: fast transformers, fuel tanks, pipes, pumps, tanks, chemical pipe cracks, plugging leaks for rapid and emergency repair, but also on the casting porosity, trachoma rapid filling, broken pieces of rapid structural bonding, emergency repairs of vehicles; 4, other industries: plastic toys, sporting goods, jewelry, artifacts and antique restoration bond
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Council to seek
By the State commissioned by the Ministry of Industry and Information Technology, China Foundry Association, held in Beijing, “China s foundry industry,” second Five-Year “development plan” (hereinafter “Plan”) project will be assessed. Review will be invited to the Ministry of Industry and Information Technology Deputy Director Wang Fuchang equipment industry, Machinery Equipment Industry researcher at the Tao, the Chinese Academy of Engineering, Professor LIU Baicheng, ZHANG Bo-ming, such as your house, Zhongxue You, Zhao Weimin, Luorui Ying, Gong Jimin and other industry experts. China Foundry Association Jiacheng Bing, deputy director Shao Ying, Tien-Yu Huang, full-time deputy chairman of the temperature level, the Deputy Secretary-branch Xiao Heng, Deputy Secretary-General Rong Lihui, Fanqi Deng attended the meeting. Meeting was chaired by China Foundry Association executive vice president and secretary-general Zhang Libo chair.
Tien-Yu Huang, vice chairman on behalf of group of “planning” to do the detail, the assessment team leader LIU Baicheng Academy of Sciences organized the experts in the discussion, and the formation of review comments. Assessors agreed that the “plan” consistent with the current China s foundry industry the actual situation, which on the casting of industrial restructuring, technological progress and innovation, backward production capacity, construction of industrial clusters, “two” of integration, personnel development, resource recycling utilization, environmental protection, labor protection and a number of key issues such as policy recommendations, comprehensive, correct perspective, both detailed and accurate data analysis, there are macro-qualitative conclusions can be for the country in the “five” developed during the implementation of the foundry industry policies related industries provide a valuable reference and learning. Meanwhile, experts on the “planning” to make constructive changes to improve the guidance.
“Four” development goals
“Plan” put forward China s foundry industry, “second five” to achieve four objectives: First, economies of scale, the total output in 2015 reached 50 million tons castings, annual sales revenue of 750 billion yuan or more; casting the number of enterprises reduced from 30,000 to around 20,000 in 2020 down to 10,000 or so, the final number of firms remain in the 10,000 or so; the average size of enterprises from each 1200 tons to 2500 tons each, 2020 years to about every 5,000 tons.
Second, the types of the cast alloy, ductile iron castings in 2015 the proportion of 35% or more, the proportion of non-ferrous alloy castings to 20%.
Third, advances in technology, independent innovation, to solve large-scale and key equipment parts casting technology, to achieve the localization rate of 95% or more, such as large hydropower, thermal power, wind power, nuclear power and the key to casting ship equipment; achieve rail vehicles , automotive and 3C products aluminum, magnesium alloy and other large, complex, high-precision casting production; accelerate the casting industry cluster (casting Industrial Park) building, the implementation of “Ten Million Project”, focused on creating an integrated casting hundred leading enterprises, foster nurturing one thousand “special, unique, refined, the new” competitive enterprises, and strive to China in 10 years time will be cast in the number of firms control less than 10,000.
Fourth, the energy-saving emission reduction, a significant reduction in energy consumption casting, 30% of the company to achieve the level of the advanced industrial countries; foundry waste, emissions to meet national standards or local standards; in the “Eleventh Five-Year”, based on energy saving target to reduce energy consumption by 10%, 15% lower emissions.
“Big Five” development strategy
“Plan” clearly made a quality strategy, green foundry strategy, structure optimization strategy, innovation strategy, talent strategy “Big Five” development strategy. Quality strategy which proposed that “five” period, to really put the quality of castings in the first place, aiming at the world advanced level, in order to improve the level of casting technology, the industry is providing high-quality castings of the national economy, especially in urgent and critical casting , as a strategic goal.
By insisting green casting strategy, from the conservation of resources to achieve reduction, recycling, re-use; reduce casting scrap, improve casting quality, reduce energy consumption in the production process; to improve working conditions within the plant, labor protection equipment configuration necessary to reduce corporate emissions of harmful substances in the surrounding environment; development of green foundry industry standards, promote the circular economy and clean production.
Optimization strategy proposed, it is necessary for industry restructuring to focus on capital growth to accelerate adjustment of industrial structure, to support key enterprises cross-casting and trans-regional, cross-ownership of the association, merger, reorganization, foster a number of international competitive large enterprise groups and the “special, unique, refined, and new” specialized production enterprise, to form a complementary and coordinated development of the industry, a new pattern. Industry restructuring in full swing at the same time, the foundry business to do business within the product structure adapted to our country and the world economic development trends and needs, to improve the competitiveness of enterprises. Second, the implementation of “China s foundry industry access” to close the waste of resources, pollution of the environment and do not have the safety conditions of enterprises, so that the healthy and orderly development of the foundry industry. The third is to follow new industrialization development principles and relevant state industrial policies, laws and policies according to market-oriented economy, with industrial clusters have been an early form of industrial parks and industrial clusters have been established to strengthen the training, adhere to standards, according to the industry cluster model operation, a model for cultivating a variety of industrial clusters, sum up experience, to promote, play a leading and exemplary role.
lost wax casting supplies
“Planning” that focus on the future development of casting technology to large, lightweight, accurate, intelligent, digital, networked and cleaning of the direction. In the “second five” common basis will increase our casting technology research and advanced casting technology promotion efforts.
“Eight” development tasks
“Planning” to define the “second five” development period, the foundry industry s eight main development tasks: First, accelerate the adjustment of industrial structure, to further improve the foundry industry access system, to carry out implementation of the “Ten Million Project” to accelerate the foundry industry cluster construction. Second, the focus of research and promotion of advanced casting technology to give priority to the development of major technologies and equipment the foundry industry. The third is to strengthen basic skills and innovation development. Fourth, to enhance the business management level. Fifth, do a good job of energy saving technology application and promotion. Sixth, actively promoting the “two” of integration work carried out. Seven is the strengthening of qualified personnel. Eighth, efforts to promote bilateral and multilateral foundry international exchanges and cooperation.
Jiacheng Bing, chairman of the concluding remarks that “1025″ period of China s economic transformation and sustainable development is important, as, for the foundry industry is a critical period of development. “Planning” further implement the preparation of the spirit “of the State Council on Accelerating the equipment manufacturing industry views on a number of” spiritual and accelerating the foundry industry restructuring, changes in development, leading the industry innovation, improve the overall industry. “1025″ period, the development of equipment manufacturing industry should seize the opportunity, to seize the economic restructuring and structural adjustment of the central task, grasp the development direction of the industry-wide consensus, clear objectives, and concerted efforts to make China s foundry industry power to achieve the goal of casting the world.