药芯埋弧焊丝W330回火脆性研究

Study on Temper Brittleness of Flux Cored Submerged Welding Wire W330

将药芯埋弧焊丝W330堆焊成含0.05%～0.07%C、13.0%～13.5%Cr、2.0%～2.5%Mn、1.2%～1.6%Ni、0.6%～1.0%Mo(质量分数)的熔敷金属,然后将焊态熔敷金属在不同温度下回火,通过对不同温度下回火后试样的硬度、冲击性能及断口形貌的测试及分析,得出该焊丝熔敷金属的回火脆性温度区间为250℃和400～500℃。

The composition of deposited metal of flux cored submerged welding wire W330 was 0.05%～0.07%C,13.0%～13.5%Cr,2.0%～2.5%Mn,1.2%～1.6%Ni and 0.6%～1.0%Mo.As-welded deposited metal was treated at different temper temperatures.The hardness,impact energy and fracture morphology of the samples after tempering were studied.The results show that the tempering brittleness temperature of W330-deposied metal is at 250℃ and 400～500℃.