箱形立柱的焊接工艺及变形控制

钻机底座立柱为箱形焊接结构，是整个钻机的支撑构件。底座的升降也是通过立柱实现的，因而对立柱的焊接质量和变形控制有着严格的要求。根据立柱的特点并结合工厂实际条件，经多次工艺试验，制定了合理的焊接方法和工艺措施，解决了立柱的焊接变形控制问题，同时焊后对焊缝的探伤结果也达到了国家标准。

Welding of trunk column and deformation control

The column of drill base is a trunk welding structure,and it is important to support the whole drill.The lifting of drill base is achieved by the column,so it is necessary to control the weding quality and deformation of column.Combined with the feature of column column and the conditions of factory,the reasonable welding method and technology measure are worked out through the testing of technology,which decrease welding deformation,enable the seam to meet the national regulation.