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人字门的安装变形控制分为两个方面,一方面为门叶现场组对焊接中的变形控制;另一方面为门叶焊接完毕后处于自由悬挂状态时的变形控制。文章结合工程实例从以上两方面分析控制人字门现场安装变形的措施。其中焊接前的控制措施包括预留反变形、刚性固定,焊接中控制措施包括安排合理的焊接顺序、加强变形监测、采用良好的施焊工艺,焊接后控制措施主要是消除应力热处理;自由悬挂状态下的变形控制措施采取在门体的下游面上设置背拉杆。
Miter door installation deformation control is divided into two aspects, on the one hand for the door leaves on-site group of welding deformation control; the other hand, the door leaf welding is completed in the state of free suspension deformation control. The article analyzes the measures of controlling the installation deformation of the gabled gate from the above two aspects by combining with the engineering example. The control measures before welding include reserve anti-deformation and rigid fixing. The control measures in welding include arranging reasonable welding sequence, strengthening deformation monitoring, adopting good welding process, and controlling measures after welding, mainly stress relieving heat treatment; free-hanging state Under the deformation control measures taken in the downstream face of the door set back lever.