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一、前言所谓金属板材的冲压性能是指在冲压变形过程中不产生裂纹等缺陷的变形极限。由于冲压过程相当复杂,所以常规的力学性能参数,如抗拉强度(σ_b)、屈服强度(σ_s)、延伸率(δ)和冷弯并不能完全反映板材冲压性能的优劣。武钢试制的液化石油气钢瓶用钢(15MnHP)采用转炉冶炼→吹氩→连铸→热连轧→剪切→成品的生产工艺,按日本SG30的性能指标组织生产和发货,抗拉强度和屈服强度与SG30相当,延伸率略高于SG30。但自1984年鉴定转产以来,用户质量异议不
First, the foreword The so-called sheet metal stamping performance refers to the stamping deformation process does not produce cracks and other defects deformation limit. Conventional mechanical properties such as tensile strength (σ_b), yield strength (σ_s), elongation (δ), and cold bending do not fully reflect the pros and cons of sheet metal stamping due to the complexity of the stamping process. The steel produced by WISCO for liquefied petroleum gas steel cylinder (15MnHP) is produced and delivered according to the performance index of Japan’s SG30 according to the production process of converter smelting → argon blowing → continuous casting → hot rolling → shearing → finished product. The tensile strength and Yield strength and SG30 quite, elongation slightly higher than the SG30. However, since the identification of the conversion since 1984, the user quality objections are not