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.
出处
《宇航材料工艺》
CAS
CSCD
北大核心
2000年第4期58-61,共4页
Aerospace Materials & Technology
关键词
铝合金导管
全位置焊接
MK-200
全位置焊管机
Orbital welding, Aluminum alloy, Pipeade. The analyses indicate that the Sobel operator is more simple and effective, the Canny detector and the Gausian's Laplacian algorithm yield thinner edges. In practice, choosing which algorithm largely d
