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日前,华菱湘潭钢铁集团有限公司研制出200kJ大线能量12MnNiVR储罐用钢。大线能量低焊接裂纹敏感性钢集低焊接裂纹敏感性和抗大线能量焊接性于一体,在微合金化机理和热处理工艺研究方面均有一定的难度。其焊接裂纹敏感系数Pcm值由于要求
Recently, Valin Xiangtan Iron and Steel Group Co., Ltd. developed 200kJ 12MnNiVR large wire energy storage tank steel. Large wire energy low welding crack sensitive steel with low welding crack sensitivity and resistance to large wire welding in one of the micro-alloying mechanism and heat treatment process research has a certain degree of difficulty. The weld crack sensitivity coefficient Pcm value due to requirements