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发明公开
CN105252109A 30CrMnSiA焊接结构件成品焊缝裂纹补焊法 无效 - 驳回

30CrMnSiA焊接结构件成品焊缝裂纹补焊法
摘要：
本发明30CrMnSiA焊接结构件成品焊缝裂纹补焊法，属于压力容器的焊接技术领域；所要解决的技术问题是提供一种30CrMnSiA焊接结构件成品焊缝裂纹补焊法，高合格率地完成在成品条件下的产品缺陷修复；采用的技术方案是：30CrMnSiA焊接结构件成品焊缝裂纹补焊法，按照以下步骤进行加工：第一步，选择补焊的焊接方法，确定焊接工艺参数及去应力热处理工艺参数，第二步，确定补焊的坡口形式及尺寸，制备焊接坡口，第三步，补焊前预热，第四步，以选定的焊条及焊接电流等工艺参数进行补焊，第五步，去应力处理，第六步，采用X射线探伤方式检查补焊处质量；本发明用于30CrMnSiA焊接结构件成品条件下焊缝的裂纹补焊。
摘要（英）：

The invention relates to a weld crack repair welding method for a 30 CrMnSiA welding structural part finished product and belongs to the technical field of welding of pressure containers. By means of the weld crack repair welding method for the 30 CrMnSiA welding structural part finished product, product defect repair is completed at the high yield with the high percent of pass under the finished product condition. According to the technical scheme, the weld crack repair welding method for the 30 CrMnSiA welding structural part finished product includes the following steps that firstly, a repair welding method is selected, and parameters of a welding technology and parameters of a destressing heat treatment technology are determined; secondly, the type and size of a repair weld groove are determined, and a weld groove is manufactured; thirdly, preheating is conducted before repair weld; fourthly, repair weld is conducted according to a selected welding rod and technological parameters such welding current; fifthly, destressing treatment is conducted; and sixthly, the quality of the repair weld position is checked in a X-ray flaw detection manner. The weld crack repair welding method is used for weld crack repair welding under the condition of the 30 CrMnSiA welding structural part finished product.

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