SY35平台MAG焊接变形模拟分析和调控

Simulation analysis and control of MAG welding deformation of SY35 platform

SY35平台焊接过程中产生的焊接变形会影响平台尺寸,影响驾驶室、发动机安装。优化焊接顺序和焊接工装约束是控制SY35平台焊接变形的重要手段。该文针对SY35平台MAG开展研究,构建SY35平台MAG焊接变形数值分析模型,分析焊接顺序和焊接工装约束对SY35平台焊接变形的影响,提出有利于控制SY35平台MAG焊接变形焊接顺序和焊接工装夹具约束。研究结果表明,通过针对性约束,采用优化后的焊接顺序及针对性的约束,可以获得较小的SY35平台底板变形,最小变形量为1.54 mm。论文的研究工作将有助于指导SY35挖掘机平台接顺序选择、工装夹具设计、焊接变形控制,具有理论意义和工程应用价值。

Welding deformation produced in welding process of SY35 platform will affect size of the platform and installation of cab and engine.Optimizing welding sequence and welding fixtures constraints is an important means to control welding deformation of SY35 platform.Research on MAG of SY35 platform was carried out in this paper,and a numerical analysis model of MAG welding deformation on SY35 platform was built to analyze influence of welding sequence and welding tool constraints on welding deformation of SY35 platform.Finally,welding sequence and welding fixtures that were conducive to controlling MAG welding deformation of SY35 platform constraint were proposed.The research results showed that the minimum deformation of SY35 platform bottom plate was 1.54 mm by the optimized welding sequence with targeted constraints.The research work of the paper will be helpful to guide welding deformation control of SY35 excavator platform,which has theoretical significance and engineering application value.