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用IIW最高硬度试验、斜Y型小铁研抗裂试验以及金相显微分析等方法研究了预热和后热对5CrMnMo热锻模具钢焊接性的影响,并制定了相应的焊修工艺。
The effects of preheating and post-heating on the weldability of 5CrMnMo hot-forging die steel were studied with IIW maximum hardness test, oblique Y-type iron test, and metallographic microscopic analysis. Corresponding welding repair techniques were also developed.