超高强度硼钢B1500HS的热冲压工艺试验

摘要/Abstract

摘要：

摘要：研究了奥氏体化加热温度和保温时间对厚1.8 mm的冷轧硼钢B1500HS的淬火组织、原奥氏体晶粒尺寸和力学性能的影响，制定了B1500HS钢的奥氏体化加热规程，并采用带冷却流道的V型弯曲模具进行了B1500HS钢的热冲压和纯马氏体钢M1200的冷冲压对比试验.结果表明：B1500H钢的热冲压成形零件强度高达1.530 GPa，其型面精度较高且基本无回弹；而M1200钢冷冲压成形所需最大成形力约为750 kN，是热冲压成形所需最大成形力的2倍，且出现了明显的回弹现象，回弹角约为9°.

关键词: , 硼钢, 马氏体钢, 热冲压

Abstract:

Abstract： In order to determine the heating specification of coldrolled boron steel B1500HS with a thickness of 1.8 mm, the effect of austenitizing temperature and soaking time on the quenching microstructures, original austenite grain sizes and mechanical properties were investigated. The Vshaped bending die with a cooling channel was used to conduct the hot stamping experiment of B1500HS steel and cold stamping test of M1200 fully martensite steel. The results indicate that the tensile strength of hot stamping part is up to 1.530 GPa, and the profile has a perfect precision with almost no springback. Compared with the hot stamping process of B1500HS, the cold stamping process of M1200 martensite steel requires much higher forming load, approximately 750 kN, which is twice as much as that of hot stamping process. In addition, the part of cold stamping obviously has springback and the springback angle is approximately 9°.
Key words：

Key words: boron steel, martensite steel, hot stamping

中图分类号:

TG 115

张磊，赵玉璋，王武荣，韦习成. 超高强度硼钢B1500HS的热冲压工艺试验[J]. 上海交通大学学报（自然版）, 2015, 49(01): 12-18.

ZHANG Lei,ZHAO Yuzhang,WANG Wurong,WEI Xicheng. Experimental Study of Hot Stamping Process of B1500HS Ultra High Born Steel[J]. Journal of Shanghai Jiaotong University, 2015, 49(01): 12-18.

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