吉林大学学报(工学版) ›› 2016, Vol. 46 ›› Issue (3): 853-858.doi: 10.13229/j.cnki.jdxbgxb201603026

• Orginal Article • Previous Articles     Next Articles

Optimization of quenching parameters of ultrahigh strength steel in hot stamping process

GU Zheng-wei, LYU Meng-meng, ZHAO Li-hui, XU Hong, LI Xin, LU Guan-han   

  1. College of Materials Science and Engineering, Jilin University,Changchun 130022,China
  • Received:2015-03-18 Online:2016-06-20 Published:2016-06-20

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Abstract: An adjustable pressure apparatus for hot stamping quenching was developed, and ultrahigh strength steel 22MnB5 applied for automobile is tested in the apparatus. The two-stage color tint etching procedure for microstructure analysis and material property experiments were used for the optimization of the hot stamping quenching parameters. Results show that the critical pressure for 2 mm 22MnB5 in quenching is 0.3 MPa when the coolant is water in room temperature. Besides, the optimum pressure range in actual production for 2 mm 22MnB5 in quenching is over 1.0 MPa, and the best holding time is 8 s when the blank is cooled from 800 ℃.

Key words: materials synthesis and processing technology, 22MnB5, hot stamping, quenching

CLC Number: 

  • TG306
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