电焊机2024，Vol.54Issue(8)：84-90,7.DOI:10.7512/j.issn.1001-2303.2024.08.11
铝合金的电阻对接点焊模拟仿真与组织研究
Simulation and Microstructure Study of Resistance Slant Butt Welding for Aluminum Alloy
摘要
Abstract
A finite element model of resistance ramp butt welding process of 5052 aluminum alloy with thickness of 4 mm was established by Abaqus,and the process test was designed under the same parameters.The relationship between the for-mation process of the welding nugget and the electric field and temperature field during the welding process under different welding process parameters was analyzed.The accuracy of the model was verified by comparing the metallographic samples with the results of the finite element model calculations.The results show that the welding nugget of resistance slant butt welding is an ellipsoidal shape that grows along the contact surface,and the thickness of the workpiece plays a certain guid-ing role in the growth direction of the nugget.At the same time,due to the different material properties of aluminum alloy and welding structure,a current concentration area was formed at the center of the lower electrode in the early stage of weld-ing.The role mechanism of the minimum voltage drop principle in slant butt welding is also discussed,providing basic sci-entific data for further study of the resistance eccentric spot welding process.关键词
斜坡对接焊/5052铝合金/熔核生长/有限元模拟Key words
CFRP/coaxial one-side resistance spot welding/numerical analysis/temperature field/welding parameters分类
矿业与冶金引用本文复制引用
武庆龙,李英哲,毕元波,郭璟,罗震..铝合金的电阻对接点焊模拟仿真与组织研究[J].电焊机,2024,54(8):84-90,7.基金项目
中国冶金科工集团公司重大研发项目(YZJ2021181) （YZJ2021181）
