焊接变形问题是直接影响焊接产品制造质量的关键之一,长期以来焊接变形的防止和控制基本上还是依靠经验。随着现代工业和计算机技术的发展,采用计算机辅助焊接变形的预测和控制,选择最佳的焊接方法和工艺参数,已逐渐成为目前国内外发展的重要方向。本文对大面积中厚板多层焊时的角变形和横向收缩进行了计算机分析,为该类焊接结构变形的计算机预测和控制提供了方法和实例。 Welding deformation is a direct impact on the quality of welding products, one of the key, for a long time to prevent and control the deformation of welding is basically still rely on experience. With the development of modern industry and computer technology, computer-aided prediction and control of welding deformation and selection of the best welding method and process parameters have gradually become an important direction for the development at home and abroad. In this paper, the angular deformation and transverse shrinkage of large area plate welding are analyzed by computer, which provides methods and examples for the computer prediction and control of the deformation of welded structures.