摘要
针对TA16与TA17组对焊接的小直径厚壁钛合金管对接接头产生微小气孔缺陷的原因及控制问题,分别从"保护气体"、"焊材除氢处理"、"电弧电压"、"对接接头坡口型式"以及"焊接端面粗糙度"五个方面着手,通过采用自动TIG焊工艺方法开展对比焊接试验研究。通过对试验结果深入分析,认为"提高焊接端面粗糙度精度"是控制该类焊接接头出现微小气孔的有效措施。该试验研究结果对该类钛合金小直径厚壁管对接焊的工程应用具有重要的参考意义和实用价值。
By changing ＂protective gas＂, ＂hydrogen treatment to welding materials ＂, ＂arc voltage＂, ＂groove type of butt joint＂ and ＂welding end surface roughness＂ , the cause analysis and control methods of tiny porosity for TA16 and TA17 titanium alloy welding of small diameter thick wall pipe butt joint were researched, and then the welding method is TIG. By the analysis , improving the welding end surface roughness accuracy＂ is an effective measure to control the welded joint appearing micro-porosity. The experimental results have important reference for significance and practical value.
出处
《热加工工艺》
CSCD
北大核心
2014年第11期197-200,共4页
Hot Working Technology
关键词
钛合金
小管径
厚壁
对接接头
微气孔
titanium alloy
small pipe diameter
thick wall
butt weld
micro porosity
