板厚对20CrTIG焊焊接接头的影响
Influence of Thickness on TIG Welding Of 20Cr
杨小坡，童彦刚，王能庆，贺晓娜
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作者单位：重庆大学
中文关键字：板厚；焊接接头尺寸；热影响区；焊缝区
英文关键字：Thickness; Welded joints size; Heat-affected zone; Welded zone
中文摘要：摘要：采用TIG焊接方法，在相同的焊接参数情况下，对不同厚度的圆形20Cr低合金钢试样表面实施无填充材料的焊接，焊后分析了厚度变化对焊接接头尺寸、热影响区宽度以及焊缝区组织的影响。研究结果表明：随着板厚的增加，焊缝的深度和宽度都逐渐减小，但焊缝成形系数增加；热影响区的宽度逐渐减小；焊缝区的晶粒更加细化。
英文摘要：ABSTRACT: Different thickness 20Cr low-alloy samples were welded in TIG welding with nothing filling material. At the same time, same welding parameters were used. And welded joints sizes, Heat-affected zone width and microstructure of welded zone were discussed after welding. The results show that depth and width of weld decrease with increasing thickness. However, the weld factor increase. The width of Heat-affected and grain size decrease with increasing thickness.