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研究了轧辊堆焊用药芯埋弧焊丝W110的回火脆性,将药芯埋弧焊丝W110堆焊成含0.3%～0.45%C,12.5%～14.5%Cr,1.0%～1.6%Mn,0.5%～0.8%Mo,0.8%～1.5%Ni,0.5%～1.2%Si的熔敷金属,将焊态熔敷金属在不同温度下回火,通过硬度测试、冲击韧度测定及断口微观分析,对回火后的试样的性能进行研究。结果表明,在不同回火温度下,试样的硬度分布与冲击韧度分布不是一一对应的,而断口形态与冲击韧度值高度吻合。以回火试样的冲击韧度值确定该焊丝熔敷金属的回火脆性温度区间,其值为100～150℃和450～550℃。
The temper embrittlement of the flux-cored wire W110 for roll surfacing was studied. The flux-cored wire W110 was deposited into a mixture of 0.3% -0.45% C, 12.5% -14.5% Cr, 1.0% -1.6% Mn and 0.5% ~ 0.8% Mo, 0.8% ~ 1.5% Ni, 0.5% ~ 1.2% Si, the weld metal is tempered at different temperatures, and the hardness, impact toughness and fracture microscopic analysis of After tempering the performance of the sample was studied. The results show that at different tempering temperature, the hardness distribution of the specimen does not correspond to the impact toughness distribution, and the fracture morphology is in good agreement with the impact toughness. The tempering brittleness temperature range of the deposited metal of the welding wire is determined by the impact toughness value of the tempering specimen, and the value is 100-150 ° C and 450-550 ° C.