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美国钢铁学会和汽车工程师学会将抗拉强度为24.6～98.4公斤/毫米~2(35000～140000磅/英寸~2)的薄钢板称为高强度钢板。抗拉强度98.4公斤/毫米~2以上时划为超高强度级。本文将讨论有关高强度薄钢板成形的若干问题。一、成形时应考虑的板材参数在低于临界状态的试验中,极限抗拉强度对成形性能影响极微,但屈强比的影响不能忽视。
The American Iron and Steel Institute and the Society of Automotive Engineers calls a thin steel plate having a tensile strength of 24.6 to 98.4 kg / mm 2 (35,000 to 140,000 lb / in 2) as a high-strength steel plate. Tensile strength of 98.4 kg / mm ~ 2 or more when classified as ultra-high intensity level. This article will discuss several issues related to the forming of high strength thin steel sheets. First, the forming plate parameters to be considered in the test below the critical state, the ultimate tensile strength of the forming properties of minimal impact, but the yield ratio can not be ignored.