Development Trend for Automobile Dies

The development trend of automobile dies In the development of the automobile dies industry at home and abroad, the production and marketing demand and transformation and upgrading of China’s automobile dies industry show the following nine development trends.

1, the dies 3 D design position has been consolidated The 3 d design of dies is an important part of digital dies technology, and is the basis of realizing the integration of dies design, manufacture and inspection. Japan Toyota, GM and other companies have realized the 3 d design of the dies, and achieved good application results. Foreign countries in the dies 3 d design of some practices are worth our reference. In addition to dies 3 D design is conducive to achieve integrated manufacturing, another advantage is convenient for interference inspection, can be motion interference analysis, to solve a problem in two-dimensional design.

2, the simulation of the stamping forming process (CAE) role is more prominent In recent years, with the rapid development of computer software and hardware, the simulation technology (CAE) is playing an increasingly important role. In the United States, Japan, Germany and other developed countries, CAE technology has become a necessary link in the dies design and manufacturing process. It is widely used to predict the forming defects, optimize the stamping process and dies structure, improve the reliability of the dies design, and reduce the dies test time. Many domestic automobile dies enterprises have also made significant progress in the application of CAE, and have obtained good results. The application of CAE technology can greatly save the cost of the trial dies, shorten the development cycle of the stamping die, and has become an important means to ensure the quality of the dies. CAE technology is gradually transforming the dies design from empirical design to scientific design.

3, digital dies technology has become the mainstream direction The digital dies technology, which has developed rapidly in recent years, is an effective way to solve many problems in the development of automobile dies. The so-called digital dies technology is the application of computer technology or computer-aided technology (CAX) in the process of dies design and manufacturing. Summarize the successful experience of domestic and foreign automotive dies enterprises in the application of computer aided technology, digital automotive dies technology mainly includes the following aspects: ① manufacturability design (DFM), that is, to consider and analyze the manufacturability in the design, to ensure the success of the process. ② The auxiliary technology of dies surface design, the development of intelligent surface design technology. ③ CAE assisted analysis and simulate the process of stamping forming, predict and solve possible defects and forming problems. ④ Replace the traditional 2 D design with a three-dimensional dies structure design. ⑤ The manufacturing process of the dies adopts CAPP, CAM and CAT technology. ⑥ Solve the problems of dies test process and stamping production under the guidance of digital technology.

4, the rapid development of dies processing automation Advanced processing technology and equipment are an important basis for improving productivity and ensuring product quality. In the advanced automobile dies enterprises equipped with double bench CNC machine tool, automatic knife changing device (ATC), automatic processing photoelectric control system, workpiece online measurement system is not uncommon. Numerical control processing has developed from pure surface processing to the comprehensive processing of surface surface and structural surface, from medium and low speed processing to high speed processing, processing automation technology development is very rapid.

5, high strength steel plate stamping technology is the future development direction High strength steel is increasingly used in automobiles due to its excellent characteristics in flexion strength ratio, strain hardening characteristics, strain distribution ability and collision energy absorption. At present, the high-strength steel used in the automotive stamping parts mainly include baking paint hardened steel (BH steel), dual-phase steel (DP steel), phase change induced plastic steel (TRIP steel) and so on. The International Ultra-light Body Project (ULSAB) expects that 97% of the advanced concept model (ULSAB-AVC) launched in 2010 will be high-strength steel, and the proportion of advanced high-strength steel plate in the vehicle materials will exceed 60%, and the proportion of dual-phase steel will account for 74% of the vehicle steel plate. A large number of IF steel based soft steel series will be replaced by high strength steel plate series, high strength low alloy steel will be replaced by double-phase steel and ultra-high strength steel plate. At present, the application of high-strength steel plate in domestic auto parts is mostly limited to structural parts and beam parts, and the tensile strength of the materials used is mostly below 500MPa. Therefore, the rapid mastery of high strength steel plate stamping technology is an important problem to be solved in China’s automobile die industry.

6, new dies products timely launch With the development of high efficiency and automation of automobile stamping production, it will be more widely used in the production of automobile stamping parts. Level into the dies is a kind of high and new technology dies products, technical difficulty, high precision requirements, manufacturing a long production cycle, multi-stage level into the dies will be one of the key development of dies products in our country, the shape of complex stamping parts, especially according to the traditional process of small and medium complex stamping, increasingly adopt the level into dies forming.

7, Die materials and surface treatment techniques will be reused The quality and performance of dies materials are important factors affecting the quality, life and cost of diess. In recent years, in addition to a variety of high toughness and high wear resistance cold die steel, flame quenching cold die steel, powder metallurgy cold die steel introduced, foreign in large and medium-sized stamping dies selection of cast iron materials, is a noteworthy development trend. Ductile cast iron has good strong toughness and wear resistance, its welding performance, workability, surface quenching performance are also good, and the cost is lower than alloy cast iron, so it is more used in automobile stamping dies.

8, the scientific management and information is the development direction of dies enterprises Another important aspect of the development of automobile dies technology is the scientific and information management. The scientific management makes the dies enterprises continue to on-time manufacturing (Just-in-TimeManufacturing) and lean production (LeanProduction) direction, enterprise management more accurate, production efficiency greatly improved, ineffective institutions, links and personnel constantly streamlined. With the progress of modern management technology, many advanced information management tools, including enterprise resource management system (ERP), customer relationship management (CRM), supply chain management (SCM), project management (PM), etc., have been widely used in dies enterprises.

9, the fine manufacturing of the dies is an inevitable trend The so-called dies fine manufacturing is for the development process and manufacturing results of the dies, which is specifically manifested in the rationalization of stamping process and dies structure design, the high precision of dies processing, the high reliability of dies products and the rigor of technical management. dies fine manufacturing is actually not a single technology, the second is a comprehensive reflection of the design, processing and management technology. The realization of dies fine manufacturing not only depends on technical excellence, but also depends on strict management to ensure.

At the end of August 2011, the car ownership in China exceeded 100 million for the first time, and the number of motor vehicles was as high as 219 million. In 2011,18,418,900 vehicles were produced. It is expected that by 2020, the number of China’s cars will exceed 200 million, when the annual update will still be as high as 15 million, plus the annual export of about 5 million, the annual output of cars will still maintain the scale of 20 million. China for the world automobile production and sales, car ownership is expected to the world’s first, but always unable to produce their own high-grade car, which is known as “the” mother of the automobile industry “automobile dies industry lag, automobile dies is refers to the application in the field of automobile dies, known as the” mother of the automobile industry “, more than 90% of the parts in automobile production need to rely on dies forming, automobile body dies, especially large and medium-sized cover parts dies, is an important part of body manufacturing technology, is also form a key link of automobile independent development ability. Automobile dies products include automobile covering parts dies, tire dies, internal and external decoration plastic parts dies, lamp dies, automobile bumper dies, automobile instrument panel dies, etc.

In Germany, the United States, Japan and other developed automobile manufacturing countries, more than 40% of the products in the dies industry are automobile diess, while in China, only about 1 / 3 of the dies products are serving for the automobile manufacturing industry. Under normal circumstances, it takes about 1500 diess in itself to make an ordinary car, among which there are nearly 1000 stamping diess and more than 200 interior parts diess. Influenced by the rapid development of China’s automobile industry, China’s automobile dies industry shows a rapid growth, and the market capacity is constantly expanding. And with the continuous optimization of the industrial structure of China’s automobile dies industry and the continuous progress of technology, the proportion of high-end automobile dies products in the whole industry has gradually increased, and it is expected that the annual growth rate in the next five years will still exceed 15%.