Hot stamping with die quenching of boron steels appeared at the end of 1990s for producing some rather simple automotive parts like door beams and bumper beams.

 
  • 用硼钢热冲压和模具冷却的工艺出现在90年代后期,起初是用于制造一些相对简单的汽车部件,如门梁和保险杠。
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