摘要
介绍了手工向下焊焊接工艺在长输管道焊接方面的发展,主要叙述了混合型向下焊焊接工艺和复合型向下焊焊接工艺的应用。
In this paper, the improvement of vertical down welding in piping is introduced and the technology of mixed vertical downwards welding and co - operated vertical down welding are described .
出处
《焊接》
1999年第10期23-26,共4页
Welding & Joining
关键词
长输管道
向下焊
纤维素型焊条
低氢型焊条
piping, vertical down welding, cellulose electrode , low-hydrogen basic electrode
