电动法消除船体焊接结构凸起类局部变形

Research on electrodynamic processing to eliminate the local convex deformation of welded hull structure

凸起变形是船体焊接结构中常见的缺陷,相对于传统变形校正法,电动加工处理法有诸多优势。为了研究电动法对凸起类变形的影响,通过点状处理法、环形处理法和螺旋处理法等三种电动法处理АМг6铝合金和Ст3低碳钢试样。结果表明,点状处理法能耗最小,环形处理法和螺旋处理法的效率近似,但后者能耗更低,且螺旋法降低凸起变形的效果最好。通过对比分析,电动法的能耗远低于传统方法,符合耗能最小标准。采用铜衬垫的电动处理可消除其对加工金属结构表面的影响。

Convex deformation is common defect in welded hull structures,comparing with the traditional distortion correction methods,electrodynamic processing has many advantages. In this paper,АМг6 aluminum alloy and Ст3 low carbon steel samples are deals with by electrodynamic processing,which includes dot treatment,ring treatment and spiral approach. The results show：dot treatment consumes the least energy; the ring treatment and the spiral approach have similar efficiency,but the latter consumes less energy and reduces convex deformation more effectively. Through comparative analysis,the energy consumption of electrodynamic processing is much lower than traditional methods,in line with the minimum energy consumption. The electrodynamic processing with copper pad can eliminate the processing effects on metal structure surface.