Plastic mold opportunities and challenges facing the development.
At present,cast bronze China's plastics consumption is highest in the world, but the industrialized countries the per capita consumption is only 1 / 7, for industrial medium-developed countries, 1 / 4, this area reflects the gap between our existence, on the other hand show China plastic mold industry, plastics industry and a huge space for development.bronze bushing According to the International Mould & Plastic Industry Suppliers Association metal head Luobai Hui, China's demand for the mold industry, including aerospace, defense industry, rail locomotives, construction machinery and other industries, especially the total investment of 220 billion yuan Beijing-Shanghai high-speed rail project, dry bushing more than 300 billion investment scale of the large aircraft project, will be brought to the plastic mold industry, new challenges and opportunities. Luobai Hui said that China plastic mold industry development must be based on key national construction projects,plain bearing to develop precision injection molds, mold coverage and large injection mold; the same time through mergers and acquisitions to accelerate business and product upgrading, narrowing the distance between the developed countries, sleeve bushing so that plastic mold industry in China's sustained and healthy development.
Four major factors constraining the development of mold industry
In recent years, DU bushing the rapid development of China's plastic mold industry, reflected in the increasing technological content of products, continue to shorten the manufacturing cycle. bushing However, plastic mold with foreign advanced level, there are still a large gap.
1,brass bushing subject to mold steel product upgrades.
International Mould & Metal & Plastic Industry Suppliers Association Deputy Secretary-General Luo Baihui recently said that as the global economic recovery, rapid industrial development of mold, mold industry this year to achieve higher growth in 2011 will be in a stable development of mold industry and are expected there will be 18% growth, so the mold industry, the total demand for steel will continue to rise.
Luobai Hui pointed out that the stability of the mold industry is the steel industry customers, but also to the upgrading of the main promoters of steel products,Mould guide plate mold industrial upgrading in high-grade steel to some extent constrained by the variety, quality and service.
Die steel production abroad more than 80% by vacuum refining and remelting production, steel high purity and isotropic, while domestic production by ESR share very little mold steel, about 1 / 10. In developed countries die steel finished product rate from 85% to 90%, while the domestic rate of only 70% of the finished product. Included in the national standards of the plastic mold steel only 3Cr2Mo and 3Cr2MnNi. Common type of plastic mold steel abroad has become a more complete series, such as the U.S. There are 7 plastic mold steel steel,plasic bushing form a complete P series; Japan, Hitachi Metals has 15 steel. The arbitrariness of the larger plastic mold steel, carbon steel and 40Cr using 80% of steel. For complex, precision molds, in order to avoid heat distortion, generally in the annealed, normalized or quenched and tempered state of processing used, so life expectancy was only similar foreign mold 1 / 10 ~ 1 / 2. Most of the domestic auto companies are willing to use plastic mold Germany, Japan, Sweden, the three series of die steel, but die in the country to buy European steel prices are often higher than 30% to 40%, a serious impact on the competitiveness of domestic mold.
First, I hope needed to accelerate the development of high-quality special steel mold. Such as supercritical and ultra supercritical thermal power equipment for high-temperature high-pressure steel, machine tool equipment for large-scale mold high-strength steel, high quality required for bearing installation bearing steel, high quality required for stamping die mold steel.
Second is to improve the quality of steel. Steel industry in recent years stepped up the pace of independent innovation, the development of a number of new products, such as motors, high-quality silicon steel fan mold needed. But we must ensure consistency and quality of its performance stability, otherwise the company can not use.
Third, we must work together to build interest and win-win customer relationships. Die enterprise and each other upstream and downstream iron and steel enterprises in independent innovation in the common experience and feelings.
Hope that both sides of empathy, put yourself in for the sake of each other, focusing on long-term, high-end equipment as soon as possible to achieve autonomy in China, but also for high-end steel products in China as soon as possible autonomy and support each other and work together.
2, subject to mold the degree of standardization.
Automobile mold has entered the specialization, standardization phase. Automobile mold is basically a professional mold manufacturer, mold commercialization rate of 70% or more, there are many specialized production enterprise standard mold, automobile mold standard parts up to hundreds of species, such as Germany, Japan, the standardized rate of mold up to 85%. Domestic mold companies large degree of standardization of the mold is about 25% to 30%. Degree of standardization of the mold die has restricted the manufacturing cycle of the bottlenecks in the domestic one, also affected the competitiveness of domestic mold,
3, subject to mold precision, lifetime and manufacturing cycle.
Japan's automobile mold accuracy 0.02mm, precision plastic mold parting surface control in 0.01mm, while the domestic auto brands mold, car mold precision control in the 0.03 ~ 0.05mm; plastic mold mold parting with an accuracy of 0.03 mm. Germany's Die manufacturing cycle in 2 weeks to 20 days, stock 4 to 5 days, test mode 2 to 3 days. Japan, Korea and the mold cycle requires 2 weeks, because they have a special city mold parts, sliders, push rod, the gate can buy sets of components, etc., the domestic component standardization can not do, some parts of the processing accuracy is wide fashion.
4, subject to the corporate management level of innovation.
Terms of the overall quality of employees, Germany, Japan mold companies vast majority of employees are university graduates or specially trained, at least 10 years of work experience, a high proportion of technical personnel of enterprises die, 25% of most enterprises, some at 50 % or more, many companies often workers and production positions in technology exchange. Employees of domestic enterprises lack of high-tech mold processing technology and high-end CNC machine operator training, skills training, to some extent this also affected the high-end equipment utilization. Low proportion of technical personnel of enterprises die, most companies between 15% to 20%, and the comprehensive development of capacity is low. In addition, German, Japanese enterprises attach great importance to new product development, mold plant and materials often vendor, product manufacturers to develop; injection depot together with material manufacturers to develop new models; brand-name suppliers of plastic and the joint development of the famous car company New plastic and steel products. This strong cooperation, so that enterprises with strong R & D capabilities. China's enterprises in innovation, R & D capability gap even greater.
"Twelve Five" Die special work.
Speaking of plastic mold industry, "five-second" period of development, Luobai Hui pointed out in close coordination to iron and steel, automobile, petrochemical, shipbuilding, light industry, textiles, nonferrous metals, electronics, defense industry projects that focus on nine industries, to enhance Large molds, precision injection molds, mold standard high-end manufacturing capacity; to achieve domestic production of tool steel and high quality, to improve the mold material supply system, to provide a more comprehensive variety of sizes and brands of materials, greatly reduce the die manufacturing enterprises preparation cycle; improve the mold of new materials, new plastic molding technology and a new high-strength, high toughness, high temperature plastics research and development capabilities; improve enterprise information management and mold the overall level of manufacturing integration.
Major projects in the key state projects functional parts, reflected the special die mold industry in the manufacturing share of importance. Therefore, we must focus on projects with large aircraft, high-speed rail, urban rail transit project supporting high-strength, high toughness, high abrasion resistance plastic molding process and mold processing technology.
Molds for the automotive services currently account for almost all the die yield of about 1 / 3, in the more developed countries, the automotive industry for car service accounts for all of its molds are often more than 40% die yield. With the continuous improvement of living standards, constantly updated car models, car to the speed, comfort, style development, body structure will become more complex, requiring the mold to the large, complex, high-precision direction.
Cars green energy requirements of more and more, car weight decreased by 10%, can save fuel 6% to 8%. To plastic lightweight steel is the only way for cars. Therefore, we should vigorously develop energy-saving, plastic and steel, automotive parts manufacturing process and die manufacturing technology.
Experts had expected to complete in 2010 and travel up to 150 million tons of plastic products; and supporting the various plastic parts household appliances, insulation materials, packaging materials required for 400 million tons of synthetic resin; and real estate development of supporting materials, to PVC, PE, PP, PS, PC, PUR and other plastics demand will reach 600 million tons. Therefore, we must accelerate the WPC injection molding technology, plastic-metal composite material injection molding technology research and high-speed special-shaped plastic extrusion die technology research.
With the global networking and the rapid development of communication technology, communication rate increased, cell phones, laptop computers small / lightweight packaging for connectors, forming thin, plastic optical precision die forming technology and the increasingly high demand . Therefore, we must study forming thin, ultra-precision forming technology and high precision mold manufacturing technology.