煤粉锅炉水冷壁的焊接方法探究

Pulverized Coal Fired Boiler Water Wall Welding Method Exploration

在煤粉锅炉水冷壁管屏的管集箱和管排焊接时,有时由于处理不当会造成管屏产生波浪变形,个别鳍片出现密封裂纹等缺陷。另外,由于焊接时空间位置的限制,操作相当困难。为了保证管集箱和管排的焊接质量,减少焊接缺陷,更方便地进行焊接操作,设计了一种新型焊接方法,并进行了现场焊接试验。对焊接试样的检测结果表明,该焊接方法可以取得较好的焊接效果,检测一次合格率达到95%。

During tube header and tube bundle welding of pulverized coal fired boiler water wall tube, sometimes due to improper handling can cause severe wave tube deformation, individual fins seal defects such as cracks. In addition, because of the limitation of space position during welding, the operation is very difficult. In order to ensure the welding quality of tube header and tube bundle, reduce welding defects, more easily to conduct welding operation, a new welding way was designed. And the site-welding experiment for this welding way was carried out. The test results of welding sample showed that this welding method can obtain good effect, and once qualified rate reached 95%.