铝合金激光-mig复合横向焊接特性分析-(6223)

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1、哈尔滨工业大学工学硕士学位论文rootlayerneartheupperplate,intheseareas,manyshrinkagecavitiescanbeobserved.Inthehybridhorizontalweldingjoint,porositiesaremainlydistributednearthefusionlineoftheupperplate.Keywords:aluminumalloy,laser-MIGhybridwelding,horizontalwelding,formingcontrol-III-哈尔滨工业大学

2、工学硕士学位论文目录摘要.......................................................................................................................IAbstract.....................................................................................................................II第1章绪论.............

3、.............................................................................................11.1课题背景及意义...........................................................................................11.2国内外研究现状.......................................................................

4、....................21.2.1横向焊接技术研究现状........................................................................21.2.2激光-电弧复合焊接研究现状...............................................................61.3主要研究内容.............................................................................

5、................14第2章试验条件与方法....................................................................................152.1试验材料.....................................................................................................152.2试验设备..............................................

6、.......................................................162.3试验方法.....................................................................................................18第3章铝合金复合横向焊接焊缝成形控制....................................................213.1引言.................................

7、............................................................................213.2铝合金复合横向焊接焊缝成形主要缺陷及特征参量.............................213.3铝合金复合横向焊接打底层成形控制.....................................................223.3.1坡口形式优化..........................................................

8、............................223.3.2能量输入优化....................