摘要
采用焊接专用有限元分析软件对20Cr钢汽车离合器盘GTAW焊接过程进行数值仿真,分析不同热输入条件下的温度场分布和熔池形态,探索其最优热源参数。此外,结合20Cr钢CCT曲线,预测了焊接热影响区的微观组织组成。研究结果可为下一步预测汽车离合器GTAW焊接过程的变形和残余应力的分布提供热学方面的理论借鉴。
The welding process of 20Cr low alloy steel auto clutch disc GTAW welding was numerically simulated by using special welding finite element analysis software. The temperature distribution and morphology of molten pool under different heat input conditions were analyzed, and the optimal heat source parameters were explored. Furthermore, based on the CCT curve of 20Cr low alloy steel, the microstructure at heat affected zone （HAZ） of the welded joints was predicted. The results could provide thermal theory help for the further prediction of welding deformation and residual stress distribution in GTAW welded automobile clutch.
出处
《热加工工艺》
CSCD
北大核心
2013年第5期221-224,共4页
Hot Working Technology
关键词
20CR钢
温度场分布
有限元分析
工艺优化
20Cr steel
temperature distribution
finite element analysis
process optimization
