铝合金小直径薄壁管的全位置焊工艺研究  

Study on Orbital Welding of Aluminum Alloy Pipe with Small Diameter and Thin Wall

作　　者：谢峰[1] 张凌云[1] 厉克勤[1] 

机构地区：[1]航天材料及工艺研究所,北京100076

出　　处：《宇航材料工艺》2000年第4期58-61,共4页Aerospace Materials & Technology

摘　　要：采用MK— 2 0 0全位置焊管机焊接小直径薄壁铝合金导管 ,必须解决好焊缝的表面成形和内部气孔问题。分析了气孔产生的原因 ,并提出了抑制气孔的措施。大量试验表明 ,采用加填充环和背保护气加压的方法可改善焊缝成形 ;通过严格的焊前清理、合理的参数设置等抑制气孔的工艺措施可获得理想的气孔合格率。Welding line quatily and welding porosity has to be improved as to how aluminum alloy pipes with small diameter and thin wall are welded by MK—200 obital welding system.In this paper the generation of porosities is analyzed and the methods to decrease the porosities are presented.It is indicated that filling rings and pressure of backup shielding gas can be used to improve the welding line quality and the weld porosities can be obviously decreased by strict pre weld cleaning and reasonable welding parameters setting.

关 键 词：铝合金导管 全位置焊接 MK-200 全位置焊管机 

分 类 号：TG457.19[金属学及工艺—焊接]