A mold is a tool for forming an article, and the tool is composed of various parts, and different molds are composed of different parts. It mainly realizes the processing of the shape of the article by changing the physical state of the formed material. Mold is the basic process equipment of the automotive industry. More than 90% of the parts in the automobile production need to be shaped by the mold. Let's take a look at the prospects of China's automotive mold industry in 2015.

　　The proportion of future mold services in the automotive industry will continue to rise. According to the automobile mold accounted for about 1/3 of the market share of the mold industry, the size of the automotive mold market reached 600 billion yuan in 2014.

　　China's key backbone mold enterprises have reached nearly 110, of which, stamping molds account for about 37%. These data strongly prove that China has become a big country in automobile mold manufacturing, said Luo Baihui, secretary general of the International Model Association.

　　More than 90% of the parts in automobile production need to be formed by mold. In the developed countries of the automobile manufacturing industry in the United States and Japan, more than 40% of the products in the mold industry are automobile molds, and only 1/3 of the mold products in China are for automobiles. Manufacturing services.

      According to the analysis report of the automotive mold market prospects in 2014-2018, China's automobile production capacity reached 34 million in 2015. Such huge market demand will bring unlimited business opportunities to China's automotive mold industry. China's mold industry should develop to an intensive route and take an intensive development route. It is necessary to work hard to achieve the goal of “low input, high output”. This requires mold companies to initiate changes from various aspects.

      The domestic automotive mold industry is developing very fast, and the automobile mold manufacturing enterprises have already had considerable scale and quantity. Related automobile mold industry development prospects report analysis, mold production is still in the low-end repetitive construction, high-end mold products still have a big gap. With the continuous development of the domestic auto industry to the high-end, the required mold requirements are getting higher and higher. At present, the development, design and manufacturing capabilities of China's high-end molds are far from fully meeting the needs of China's auto industry. A large number of imports.

　　Therefore, to solve the problem of high-end mold dependence on imports, we must first improve the manufacturing level of China's molds. To improve the manufacturing level of China's molds, we must start with the development and manufacture of some high-end molds.

　　Experts said that the root of the mold manufacturing technology is the high-end multi-axis CNC machine tool for processing molds. It is necessary to continuously strive to develop high-end multi-axis linkage CNC machine tools with high-speed, composite, intelligent and environmental protection functions, in order to promote the domestic automotive mold industry to continue to the high end.

　　Three-dimensional design

　　The three-dimensional design of the mold is an important part of the digital mold technology, and is the basis for the integration of mold design, manufacturing and inspection.

　　Japan Toyota, the United States and other companies have achieved the three-dimensional design of the mold, and achieved good application results. In addition to facilitating integrated manufacturing, the three-dimensional design of the mold is convenient for interference inspection, and can perform motion interference analysis to solve a problem in the two-dimensional design.

　　In recent years, with the rapid development of computer software and hardware, the simulation technology of the stamping process has played an increasingly important role. In the United States, Japan, Germany and other developed countries, CAE technology has become a necessary part of the mold design and manufacturing process, widely used to predict forming defects, optimize the stamping process and mold structure, improve the reliability of mold design, and reduce the test time. Many domestic auto mold companies have made significant progress in the application of CAE and achieved good results. The application of CAE technology can greatly reduce the cost of trial mold and shorten the development cycle of stamping die, which has become an important means to ensure the quality of the mold. CAE technology is gradually transforming mold design from empirical design to scientific design.

　　The rapid development of digital mold technology in recent years is an effective way to solve many problems faced in the development of automotive molds. The so-called digital mold technology is the application of computer technology or computer aided technology in the mold design and manufacturing process.

　　Advanced processing technology and equipment are important foundations for improving productivity and ensuring product quality. It is not uncommon in the advanced automobile mold enterprises to have CNC machines with double worktables, automatic tool changers, photoelectric control systems for automatic machining, and on-line measurement systems for workpieces. CNC machining has evolved from simple profile processing to full-scale machining of profile and structural surfaces. From medium to low speed machining to high speed machining, machining automation technology has developed rapidly. High-strength steel stamping technology is the future development direction. High-strength steels have an excellent use in automobiles due to their excellent characteristics in terms of yield ratio, strain hardening characteristics, strain distribution capability, and collision energy absorption.

　　At present, high-strength steels used in automotive stampings mainly include paint-hardened steel, duplex steel, and phase-change-induced plastic steel. The international ultra-light body project is expected to produce high-strength steel in 97% of the advanced concept models launched in 2010. The proportion of advanced high-strength steel plates in the vehicle materials will exceed 60%, and the proportion of duplex steel will occupy the steel plate for vehicles. 74%.

　　The soft steel series mainly based on IF steel, which is now widely used, will be replaced by high-strength steel plate series, and high-strength low-alloy steel will be replaced by dual-phase steel and ultra-high-strength steel. At present, the application of high-strength steel plates for domestic auto parts is mostly limited to structural parts and beam parts, and the tensile strength of the materials used is more than 500 MPa. Therefore, quickly mastering the high-strength steel plate stamping technology is an important issue that needs to be solved urgently in China's automotive mold industry.

　　Introducing new molds in due course

　　With the development of high efficiency and automation of automobile stamping production, progressive die will be more widely used in the production of automotive stamping parts. Stamping parts with complicated shapes, especially small and medium-sized complex stamping parts which require multiple pairs of punches in the conventional process, are increasingly formed by progressive die forming. Progressive die is a high-tech mold product with high technical difficulty, high manufacturing precision and long production cycle. Multi-station progressive die will be one of the key mold products developed in China.

　　The quality and performance of the mold material is an important factor affecting mold quality, life and cost. In recent years, in addition to a variety of high toughness and high wear resistance cold work die steel, flame hardened cold work die steel, powder metallurgy cold work die steel, the use of cast iron materials in large and medium-sized stamping dies abroad is worthwhile. The development trend of concern. Ductile iron has good toughness and wear resistance, and has good welding performance, workability and surface hardening performance, and the cost is lower than that of alloy cast iron. Therefore, it is widely used in automobile stamping dies.

　　The refined manufacturing of the mold is in terms of the development process and manufacturing results of the mold, specifically the rationalization of the stamping process and the design of the mold structure, the high precision of the mold processing, the high reliability of the mold product and the rigor of the technical management. The meticulous manufacture of molds is not a single technology, but a comprehensive reflection of design, processing and management techniques. In addition to technical excellence, the realization of fine mold manufacturing is also guaranteed by strict management.