不锈钢复合板螺柱焊焊接接头性能分析

Analysis of Welding Joint of Stainless Steel Clad Plate Stud Welding

对覆层厚度3 mm,基层厚度10 mm的316L+Q235B不锈钢复合板使用不同焊接电流(1 300 A、1 680 A、2 000 A、2 200 A)进行螺柱焊焊接试验,对焊接接头的组织性能进行分析。结果表明,焊接接头冷弯性能良好,随着焊接电流的增大,接头抗拉强度增强,焊缝中气孔、未熔合等缺陷减少,但耐腐蚀性呈下降趋势。综合考虑,焊接电流以1 680 A为宜。

For the 316L＋Q235B stainless steel clad plate with 3 mm cladding thickness and 10 mm stainless steel base thickness, the different welding current （1 300 A, 1 680 A, 2 000 A and 2 200 A） was used to test stud welding. The microstructure and properties of welded joints of conduct were analyzed. The results showed that welded joints has good cold bending properties, joint tensile strength was increased with increasing welding current, the defects of weld porosity and poor fusion were decreased, but the corrosion resistance showed decreased trend. Taken together, the welding current of 1 680 A is appropriate.