Review of Performance Gradient Distribution Hot Forming Technology

doi:10.3901/JME.2016.08.067

Abstract

Abstract: High strength steel hot forming technology plays an important role in achieving lightweight vehicles, improving the safety performance of vehicles. The traditional hot forming product has high strength, but the plasticity is usually low and comprehensive mechanical performance is not high. Recent years, in order to achieve both high strength and high plasticity of the hot forming parts, performance gradient distribution hot forming technology has become the hotspot of scholars. The process control of material gradient properties hot forming technology is summarized through the analysis of strengthening mechanism of performance gradient distribution hot forming technology. The current methods to realize performance gradient distribution of hot forming technology are analyzed from the perspective of process, which contains detail description about how to control the initial heating temperature, cooling rate, and how to improve the mold material and the mold and forming contact area with the aim of achieving the material microstructure and performance gradient distribution. The performance gradient distribution hot forming technology research status at home and abroad is summarized and analyzed. The main direction and key scientific problems of performance gradient distribution hot forming technology, including the theoretical basis, the heating technology implementation, performance gradient distribution mold design are discussed. Performance gradient distribution hot forming technology plays an important role in precision forming, lightweight, high performance, short process, low cost and environment friendly characteristics. It is an important direction for future development of hot forming technology.

Key words: high-strength steel, hot forming, lightweight, performance gradient distribution

CLC Number:

TG156

PENG Yan, LIU Caiyi, HAO Luhan, XING Pengda. Review of Performance Gradient Distribution Hot Forming Technology[J]. Journal of Mechanical Engineering, 2016, 52(8): 67-75.

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