铝钢异种金属CMT焊接变形研究

Welding Deformation Study of Steel and Aluminum Metal Plate Using CMT

针对目前使用冷金属过度焊(CMT)对铝钢异种金属薄板进行焊接时,存在焊接质量差,焊接热变形及使用性能低等缺点,对薄板件焊接过程采用SYSWELD软件进行模拟。通过不同的试验参数进行组合,得出金属薄板在X,Y以及整体方向上的焊接变形量,分析不同焊接参数对焊接热变形的影响规律。结果表明:在达到焊接要求的前提下,应尽量减少焊接时间和焊接电流;在一定焊接电压范围内,焊接电压越大,相同时间内焊接变形量就越大,Y方向焊接变形值约为X方向的1.5倍;为了避免焊接变形量过大,宜选用相对较大的焊接速度。

Aiming at the shortcomings of the aluminum steel dissimilar metal sheet in the use of CMT（ Cold Metal Transfer） welding,such as the welding heat deformation,poor welding quality,performance etc.,SYSWELD was used to simulate the welding process of sheet metal. Through the combination of different parameters,the welding deformation of thin plate in X,Y and the overall direction was obtained. The results showed that： in the premise of welding requirements,the welding time and welding current should be minimized; in a certain range of welding voltage,the greater the welding voltage,the greater the welding deformation during the same time,the value is about 1. 5 times of the X direction of the welding deformation of Y direction; in order to avoid excessive welding deformation,relatively large welding speed should be selected.