Research on Welding Repair Process for Large-scale Cast Steel Parts of Marine Diesel Engine

被引:0
|
作者
Zhao Zhiqiang [1 ]
Guo Haijian [2 ]
机构
[1] Binzhou Polytech, Binzhou 256600, Shandong, Peoples R China
[2] Qilu Traff Dev Grp Co Ltd, Binzhou Branch, Binzhou 256600, Shandong, Peoples R China
关键词
welding repair process; large-scale cast steel; residual stress;
D O I
暂无
中图分类号
TU [建筑科学];
学科分类号
0813 ;
摘要
Marine cast steel parts generally have features such as large cross-section dimensions and complex shapes, hard to repair once damaged. This paper analyzes the cracks and causes of weld cracks commonly found in the welding of large steel castings, takes the repair of diesel cylinders as an example, and analyzes the common welding repair methods for steel castings. The welding repair through the cylinder shows that under the strict control of the welding process, the heterogeneous cold welding repair process is practically applicable to the on-site repair. And cracks may occur in the nickel-based welds after the diesel engine actually operates. The welding repair process should be strictly controlled and appropriate measures should be taken to eliminate the welding residual stress.
引用
收藏
页码:1 / 4
页数:4
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