摘要
管壳式换热器中管子与管板胀焊结构接头的加工制作，是先焊后胀还是先胀后焊，至今仍有争论。详细分析比较了两种连接加工方法各自的优缺点及应用情况，提出了胀接与焊接先后次序选择应遵循的主要原则，得出了几点有用的结论。为实际生产选择合理的制造工艺、保证管子与管板连接接头的质量提供指导与保证。
To this day there is still ongoing controversy about whether to expand first or weld first the tube to tube-sheet joint in heat exchangers. This paper presents a detailed analysis of the advantages. defects and application of the two manufacturing methods, puts forward the main princple in deciding its sequence, and some valuable conclusions are drawn from that.
关键词
换热器
管子
管板
胀管
焊接
胀焊接头
Heat exchanger
Tube to tube-sheet
Expanding
Welding
Expanding and welding joint
