随焊激冷对Inconel 625合金堆焊温度场的影响

Effect of welding with trailing intense cooling on welding temperature field of Inconel 625 alloy surfacing

采用ABAQUS软件对Inconel 625合金堆焊温度场进行数值模拟,结合响应面法建立了随焊激冷冷源参数和冷却速率的多元回归模型,分析了冷源参数主效应、交互效应对冷却速率的影响规律。结果表明:随着冷源宽度、冷源长度和冷源功率的增加,冷却速率逐渐增大,且影响顺序为:冷源功率>冷源宽度>冷源长度;冷源宽度在20 mm时,增加冷源长度对冷却速率的影响不明显;冷源长度在低水平值时,增加冷源功率对冷却速率的影响较小。

The Inconel 625 alloy surfacing temperature field was numerically simulated by ABAQUS software.A multivariate regression model of the cold source parameters and the cooling rate was established in combination with the response surface method.The main effect and interaction effect of the cold source parameters on the cooling rate were analyzed.The results show that the cooling rate increases gradually with the increase of cold source width,cold source length and cold source power,and the order of influence is:cold source power>cold source width>cold source length.When the cold source width is 20 mm,the effect of increasing cold source length on cooling rate is not obvious,and when the cold source length is at a low level,the effect of increasing cold source power on cooling rate is relatively small.