俄供大厚壁设备裙座焊缝裂纹缺陷处理措施

唐平; 杨祥福; 程家; 刘建华; 赵德民

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俄供大厚壁设备裙座焊缝裂纹缺陷处理措施
Treatment measures for the crack defect of weld on skirt of equipment with large wall thickness supplied by Russia
2018年48卷第9期页码：58-61
纸质出版：2018
DOI：
稿件说明：

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唐平, 杨祥福, 程家, 等. 俄供大厚壁设备裙座焊缝裂纹缺陷处理措施[J]. 电焊机, 2018,48(9):58-61. DOI：

TANG Ping, YANG Xiangfu, CHENG Jia, et al. Treatment measures for the crack defect of weld on skirt of equipment with large wall thickness supplied by Russia[J]. Eletric Welding Machine2018, 48(9): 58-61. DOI：

摘要

分析俄供大厚壁设备裙座在焊接过程中出现裂纹缺陷的原因

说明大厚壁设备裙座在焊接过程中受设备自重作用

自身结构拘束度过大

增大焊缝应力。在焊接过程中无法有效地释放焊接应力

有效解决了得焊缝在相对薄弱侧无法产生塑性变形

导致沿焊缝上侧的应力集中区域产生裂纹缺陷。据此提出行之有效的工艺措施

使俄供大厚壁设备裙座焊接裂纹缺陷问题得到解决

为类似结构件的焊接提供参考。

Abstract

By the analysis of the reasons for the crack defect appeared during the welding of skirt of equipment with large wall thickness supplied by Russia

this paper explains that in the process of welding

the weld stress increases under the dead weight of the equipment and the overlarge constraint degree of itself structure

and that the welding stress cannot have an effective release. As a result

the welds at the relatively weak side cannot give rise to plastic deformation and the crack defect comes into being in the stress concentration region along the upper side of weld. On this basis

it proposes the effective procedure measures to solve the problems about the defect

and provide reference for welding similar structural parts.