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Development status of Chinese precision stamping mold enterprises 2016

Stamping die is a special process equipment for processing materials (metal or non-metal) into parts (or semi-finished products) in cold stamping processing, which is called cold stamping die (commonly known as cold stamping die). Punching is a pressure processing method that uses a mold installed on a press to apply pressure to the material at room temperature to cause it to separate or plastically deform to obtain the required parts.

In recent years, the overall technical level of advanced precision stamping dies has improved rapidly, and its technical performance, manufacturing accuracy, service life, and manufacturing cycle have improved significantly. The overall level of a considerable number of high-end high-quality dies has reached or Close to the international level of similar molds. The air conditioner fin progressive die produced by some companies has a service life of 500 million strokes, and is in a leading position in China in terms of production scale and technological development. The developed 0.4mm pitch high-precision miniature connector progressive mold has a manufacturing accuracy of 0.5, and the smallest convex mold is 0.13mm directly ground to the mirror surface, which guarantees the thinnest part of the part 0.17mm, and the bending accuracy is 0.01mm and S shape Bending and other high precision requirements. The company's motor core automatic lamination progressive die has a service life of more than 150 million strokes. The technical level and lamination technology have reached the advanced level of similar foreign molds. Specialized development of large iron chip progressive dies of 0.5m diameter produced on 400 ton high-speed punches, large precision block composite dies of 0.88m square iron chips with 90 rotations, and extra large precision dies of 1.2m diameter fixed rotor blades The production level and capacity are in the leading position in China.

China's precision stamping mold technology status in 2016

Specialization has greatly improved the innovation ability of stamping die companies, and the technical level has developed in the direction of specialization, precision, excellence and strength. Many high-tech precision stamping dies and new technologies have emerged. It is reported that the air-conditioning fin step-by-step precision progressive molds to be exhibited this time can meet the fast switching production of 5 kinds of sheet shapes, have certain flexible production characteristics, and the mold level is equivalent to the international advanced level. The 37-stage progressive die of the lead frame at the exhibition, one die and three rows, punched 48 inner and outer lead legs within 1212mm, with a minimum distance of 0.12mm, and the flatness of the product was within 0.01mm. Its high-speed batch production performance and life are equivalent to the international advanced level, and have obtained structural innovation patents.

Many domestic precision stamping dies have a narrower gap in life and main performance compared with the international advanced level. The overall level of some precision stamping dies is equivalent to the international advanced level, which not only completely replaces imports, but also exports a considerable part of the die to the United States. , Japan and other industrial developed countries and regions. The overall level of China's precision dies is close to the international advanced level, and a considerable number of precision dies are going abroad and participating in world competition.

The 2016-2021 in-depth analysis of precision stamping die industry and the "Thirteenth Five-Year Plan" development planning guidance report show that with the continuous emergence of new processes and new products, foreign stamping dies have moved from conventional single-stage progressive dies to multifunctional combined dies, The production line is supporting the development of combined mold tooling, extra large progressive molds, and stamping molds for micro-parts. Most Chinese enterprises still focus on the serialization and industrialization of conventional single and secondary progressive molds. Key technologies such as extra-large high-precision, ultra-high-speed stamping, ultra-thin, ultra-strong, and micro-parts forming stamping dies are not designed for multi-functional composite molds. Therefore, China also needs to continuously carry out research on the key technologies of new molds, expand its application fields, and lay a solid foundation for catching up with international advanced levels.

In the future, the overall development trend of high-speed precision stamping technology and high-end molds is to develop in the direction of precision, high speed, flexibility, networking, integration, information and intelligence, low-carbon environmental protection and globalization.

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