B1500HS超高强钢初始成形温度的实验研究

Experiments Research on Initial Forming Temperature of Ultra-high Strength Steel B1500HS

对B1500HS超高强钢进行了不同温度下的拉深实验和杯突实验,研究了初始成形温度对B1500HS钢拉深成形性能和胀形成形性能的影响规律。对钢进行不同温度下的淬火实验,研究了初始成形温度对B1500HS淬火后微观组织和力学性能的影响。结果表明:当初始成形温度为700℃时,板料具有最佳的拉深成形性能和胀形成形性能;试样淬火后获得完全马氏体组织,抗拉强度为1623 MPa,硬度为513.5 HV。综合考虑板料高温成形性能及淬火后性能,确定B1500HS超高强钢的最佳初始成形温度为700℃。

The drawing experiments and cupping experiments of ultra high strength steel B 1500HS were carded out at different temperatures. The influences of initial forming temperature on drawing formability and bulging formability were researched. The quenching experiments for B 1500HS were carded out at different temperatures. The effects of initial forming temperature on microstructure and mechanical properties were studied. The results show that when the initial forming temperature is 700 ℃, the sheets have the best drawing formability and bulging formability; after quenching of the samples complete martensite microstructure were obtained, tensile strength is 1623 MPa, and hardness is 513.5 HV. Considering the forming property of sheet metal at high temperature and the performance after quenching, the optimum initial forming temperature of B1500HS ultra high strength steel was determined, which is 700 ℃.