1. Mold problem The mold used in stamping processing generally has speciality. Sometimes a complex part requires several sets of molds to be processed and formed, and the mold manufacturing has high precision and high technical requirements, and is a technology-intensive product. Therefore, only in the case of large batch production of stamping parts, the advantages of stamping processing can be fully reflected, thus obtaining better economic benefits.
2, safety issues stamping processing also has some problems and shortcomings. Mainly manifested in the noise and vibration generated during stamping processing, and the operator's safety accidents occur. However, these problems are not entirely due to the stamping process and the mold itself, but mainly due to the traditional stamping equipment and backward manual operations. With the advancement of science and technology, especially the development of computer technology, with the advancement of mechatronics technology, these problems will be solved as soon as possible and perfect.
3, high-strength steel stamping Today's high-strength steel, ultra-high-strength steel is very good to achieve the lightweight of the vehicle, improve the collision strength and safety performance of the vehicle, so it has become an important development direction of automotive steel. However, with the improvement of the strength of the sheet, the conventional cold stamping process is prone to cracking during the forming process, and cannot meet the processing requirements of the high-strength steel sheet. In the case where the molding conditions cannot be satisfied, the hot stamping forming technology of ultra-high-strength steel sheets has been gradually studied internationally. This technology is a new process that combines forming, heat transfer and tissue phase transformation. It is mainly used in the process of forming a mold through a mold by utilizing the characteristics of high-temperature austenite, plasticity increase of sheet material and reduction of yield strength. However, thermoforming requires in-depth study of process conditions, metal phase transitions, and CAE analysis techniques. Currently, this technology is monopolized by foreign manufacturers, and domestic development is slow.
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