GQ280 cold- rolled high yield strength steel is a new kind of high strength steel used for car stamping parts,but it has low stamping performance and large bending springback. Obtained by tensile test,the tensile strength of GQ280 steel plate was 420 MPa and the yield ratio was 0. 8. The forming process of GQ280 steel seat lock support plate was simulated by Dynaform. Therigidity,stress distribution and strength of parts are improved significantly by setting reinforcing ribonsupport plate. The springback is...
【基金】
国家自然科学基金青年科学基金项目(51305317)
【更新日期】
2014-03-26
【分类号】
TG386
【正文快照】
GQ系列高强度钢板性能优越,价格低,常作为板材冲压成形结构件,制造汽车车身、底盘等零部件。但GQ钢的屈服极限高,其屈强比值约为0.8,较IF钢的0.46、铝镇静钢的0.58和沸腾钢的0.62要高出许多[1]。因此,在冲压实践中,GQ系列钢板成形性能较低,问题突出,特别是对于尺寸较大(>300 mm
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