Punching processing is a forming method, to put external force to the plate, strip, pipe and profiles, to generate plastic deformation or separation, for obtaining the required shape and size of the work piece (stamping parts). Stamping parts processing and forging belong to plastic processing (or pressure processing), called the forging press. YAJING stamping parts are of high quality hot rolling and cold rolling steel plate and steel belt, guarantee product quality, meet customer demand is our motivation.

Steel all over the world, there are 60 ~ 70% is plank, most of which is made by metal stamping parts products. Car body, chassis, fuel tank, radiator fin, the boiler steam drum, container shell, motor, electric iron core silicon steel sheet stamping parts processing. Instruments and meters, household appliances, bicycles, office machinery, household utensils, and other products, there are a large number of metal stamping parts.
Metal stamping parts and castings, forgings, compared with a thin, uniform, the characteristics of light and strong. Metal stamping parts processing can make other method is difficult to manufacture with reinforcing rib, rib flanging, ups and downs, or artifacts, in order to improve its stiffness. Because use precision stamping die, work piece precision can reach micron grade, and repeat precision is high, the specification is consistent, can punch a hole nest, convex sets, etc.

Generally no longer after machining, cold stamping metal parts or need only a small amount of machining. Hot metal stamping parts precision and surface state is lower than the cold metal stamping parts, but it's still better than the castings, forgings, cutting processing capacity.

Stamping parts processing is efficient production methods, the use of compound die, especially the transfer into the mold, it can be finished on a punch multichannel metal stamping process, realize the pick-up uncoiling, leveling, cutting to the forming and finishing of automatic production. High production efficiency, good working conditions, low production cost, general can produce hundreds of pieces per minute.

The kinds of metal stamping parts processing technology:

Metal stamping mainly are classified according to the process, can be divided into separation process and forming process two kinds big. Separation process is also called the blanking, and its purpose is to make the outline of metal stamping parts along a certain line separation from sheet metal, at the same time guarantee the quality requirements of the separation section. Forming process is designed to make sheet metal under the condition of not to break the billet occurred plastic deformation, made into the required shape and size of the work piece. In the actual production, is often a variety of process integrated applied to an artifact. Cutting, bending, shear, deep drawing, bulging, spinning, correction is several main metal stamping process.

Metal stamping sheet surface and internal performance is a great influence on the quality of metal stamping products, metal stamping materials thickness precision, uniform; Smooth surface, no spots, no scar, no scratch, no surface crack, etc. Yield strength evenly, no obvious directivity; High uniform elongation; Showed low; Low strain hardening.

Commonly used in actual production, and the metal stamping process technology of approximate test, such as deep drawing performance test, bulging performance test materials such as metal stamping performance, to ensure the quality of the finished product and high qualified rate.

The precision of the stamping die and the structure directly affect the forming of metal stamping parts and precision. Stamping mold manufacturing cost and quality of life is to affect the cost of metal stamping parts and one of the important factors. Stamping die design and manufacture of need more time, it will extend the new metal stamping parts production preparation time.

Mold base, frame, guide the standardization and development of simple stamping mold (for small batch production), compound die, transfer die (for mass production), as well as the rapid development process of the mold, can reduce the metal stamping production preparation workload and shorten the preparation time, can reduce applicable to metal stamping production preparation workload and shorten the preparation time, can make the suitable for mass production of metal stamping technology used in small batch more varieties production reasonably.

Metal stamping equipment in addition to the thick plate with hydraulic press forming, generally adopts the mechanical press. In modern high-speed transfer of mechanical press as the center, the configuration open book, flattening, collection, transmission and mechanical stamping tooling libraries and quick die change equipment, and use the computer program control, can form high productivity of the automatic metal stamping production line.

In the production of dozens, hundreds of pieces of metal stamping parts per minute, in a short time to complete the feeding, metal stamping, the waste of parts, waiting for process, personal, equipment and quality accidents occurred frequently. Therefore, the safety in production of metal stamping is a very important problem.

Breakthrough in the development of blocked, metal stamping technology:

According to statistics, in 2003 China's production of about 2.4 million tons of car stamping metal parts / 800 million, about 280000 tons / 1.9 billion motorcycle stamping metal parts, tractor, agricultural vehicles metal stamping parts of about 960000 tons / 710 million pieces of household air conditioners and refrigerators hardware stamping 1 million tons / 1.28 billion. Industry experts predict that as the metal stamping industry's largest market - auto industry in the future continue to rapid development, metal stamping industry in China has ushered in a rapid development opportunity, but can seize the opportunity of getting a new faster development, experts point out that, along the way there are many resistance and obstacles to overcome and breakthrough.

Drag a: low degree of mechanization and automation

The 70% of 680 metal press line for location punch, Japan 250 production lines have 32% for location punch, which represents the current international level of large multi-station press application in our country is one of the few; Small and medium-sized enterprises (smes) equipment is generally backward, material of high energy consumption and serious environmental pollution; Humble head forming equipment, manual operation than major; Fine blanking machine is expensive, 5 ~ 10 times that of ordinary punch, most companies unable to investment hinders the extension and application of fine blanking technology in our country. Hydraulic pressure forming, especially the internal high pressure forming, the equipment investment is large, difficult to start at home.

Breakthrough: to accelerate the technological transformation

To change the backward situation in most of the current or hand up and down material, combined with the specific circumstances, to adopt new technology, improve the degree of mechanization and automation. Car body covering parts shall be filed with the single metal stamping connection metal stamping production line automation, robot, especially large multi-station punch direction. For investment, accelerate the metal stamping production line technological transformation, the current international level as soon as possible. And with the development of microelectronic technology and communication technology make the sheet forming equipment automation, flexibility is the technical foundation. Should accelerate the development of digital flexible composite forming technology and hydraulic forming technology, high precision forming technology and adapt to the new generation of lightweight body structure profile bending forming technology and related equipment. At the same time domestic old equipment, make its new production capacity.

Resistance 2: production concentration is low

Forms a closed internal facilities, many large auto group, leading to various types of metal stamping parts, low production concentration, small size, easy to cause low level repeated construction, difficult to meet specialization production, weak market competitiveness; Motorcycle metal stamping industry facing the fierce market competition, in the "excellent and be worse without tide" of the state; Head manufacturing enterprises small and scattered, concentration of only 39.2%.

Spirit: the professional road

Quickly change the current "instead of", "poor scattered" pattern, from the automobile group as soon as possible to separate metal stamping parts, according to the metal stamping parts of large, medium and small classify, set up a few large supply of metal stamping parts manufacturing center and dozens of small and specialized parts factory. Through specialization, to do bigger and stronger metal stamping parts, it becomes an international competitive strength of metal stamping parts suppliers.

Its self-sufficiency rate of resistance to three: sheet metal stamping, variety specification don't match

At present, our country automobile sheet can only meet 60%, and luxury cars with steel plate, galvanized sheet, such as high strength plate, alloying and ultra wide board (1650 mm) above all rely on imports.

Breakthrough: material should be coordinated with industry development

Automotive steel varieties should tend to be more reasonable, in the high strength, high corrosion resistance, and various specifications of steel sheet direction development, and improve the performance of metal stamping. Aluminum, magnesium alloy has become the automotive light weighting rational material; expand the application potential in mind.

Resistance of four: the slow advanced technology to promote transformation of scientific and technological achievements

In our country, many of the new technology of metal stamping start is not late, some have reached the international advanced level, but often it is difficult to form the productive forces. Advanced metal stamping technology application，available only at the trial stage, slow absorption, transformation, promotion. Technology development cost less input, lead to slow to grasp the application of advanced technology enterprises; the development innovation ability is insufficient, small and medium-sized enterprises in this gap. At present, most domestic enterprises are still using traditional metal stamping technology, for the next generation of lightweight vehicle structure and material required for the forming technology of the lack of research and technical reserves.

Breakthrough: go the way of production, study and research combined

Our country compared with Europe, America, and Japan, the biggest gap is not a production, research consortium, scientific research is hard to do big, and results cannot be transformed into productivity as quickly as possible. So should be around the large development and industrialization projects, in colleges and universities and scientific research units for technical support, enterprises for application base, and the formation of products, equipment, materials, and technology companies combined entity, the formation of both to develop innovative and rapid industrialization of virtuous circle.

Five: great resistance and fine stamping die rely on imports

At present, metal stamping mold material, design, production of all can't meet the needs of the development of domestic car, and the low degree of standardization, is about 40% ~ 45%, and the international general at around 70%.

Breakthrough: enhance the level of informationization and standardization

Must transform stamping die with information technology enterprises, the development is focused on promoting integration of CAD/CAM/CAE technology, especially in the forming process of computer simulation analysis and optimization technology (CAE).Accelerate the development of stamping die standardization process, and improve the precision and the exchange rate. Strive to 2005 stamping die standard parts using coverage reached 60%, more than 70% in 2010 basic meet the market demand.

Resistance of six: the lack of professional talents

Industry to grasp the advanced design and analysis technology and digital technology of high-quality talent far cannot satisfy the need of metal stamping industry rapid development, especially in the motorcycle industry, metal stamping and technical knowledge and skills of more the lack of professional talents and a large number of outflow. In addition, much joint venture company shall be conducted by the foreign engineering design, control design, right to invest; our metal stamping technology personnel is difficult to grasp the true meaning of metal stamping process.

Breakthrough: improving personnel quality

This is an imminent task; it is a long-term and systematic task. Revitalization of China's metal stamping industry needs a large number of high level scientific and technological personnel, a large number of familiar with the domestic and foreign markets, entrepreneurs, with modern management knowledge and skills of mastering the advanced technology, craft advanced skills talents. Be willing to part with or use great effort in a planned way, hierarchical culture.

Conclusion:

Metal stamping forming the swift and violent development of the market for the metal stamping industry has brought new opportunities for development, while in the metal stamping industry in the development of the road there are all kinds of resistance and obstacles, but we always believe that all of these could not prevent metal stamping industry the pace of progress.

YAJING focus on the marketing of stamping parts, auto stamping parts stamping parts, tractor parts, motor, electric appliance stamping parts stamping parts, instrument toys, electronic stamping parts, metal stamping parts, such as all kinds of stamping products processing business.