大型复杂结构件的焊接应力与变形控制

Control on welding stresses and deformation of large-scale and complicated structure

以数控双柱立式车铣复合机床的焊接部件横梁为例,分析了影响横梁焊接应力及变形的制造因素和结构因素。以此分析为依据,对产品零部件的准备、组装、焊接等每一道工序进行工艺方案优化;总结出合理的装配工艺、减小热输入并提高其稳定性、改善焊接工艺等措施,对数控双柱立式车铣复合机床的横梁焊接部件的焊接应力及变形进行控制;进而总结出类似于此类产品的大型复杂结构件的焊接应力及变形控制措施。

During the process of manufacture of welding structure members of the large-sized or ultra-large type process equipment,the focal point was controlling welding stresses and deformation.Case of transbeam of CNC Double Columns Vertical Turning & Milling Machine,the writer analysed the manufacture factor and structure factor which impacted welding stresses and deformation of transbeam.According to the analysis,the writer optimize technology of preparation,assembly,welding of every part of transbeam,summarize proper technology(including assembly,reduction of heat input and non-uniform and welding technology) which could control welding stresses and deformation.The technology also could control the welding stresses and deformation of large-scale and complicated structure.