论文部分内容阅读
我矿有许多大中型水泵的中节,由于导水叶片磨损超限而失效,我们采用气焊堆焊工艺进行修复,获得成功,投入使用后效果良好。具体工艺如下: 修光超限部分的叶片,然后用气焊的办法将废活塞环(Mo-Cr球铁)熔化,使其堆焊在旧叶片上。火焰应调为微炭化焰,第一步堆焊时叶片的高、宽应比公称尺寸大2mm,以备第二步整形用,堆焊完应用稻草灰埋住,缓冷至室温。第二步焊接时应将草木灰
I have many large and medium-sized mining pump mid-section, due to excessive wear and tear of the water guide vane failure, we use gas welding surfacing process to repair, to be successful, put into good use. The specific process is as follows: Winking overrun part of the blade, and then use the method of gas welding waste piston ring (Mo-Cr ductile iron) to melt, so that the welding on the old leaves. Flame should be transferred to the micro-carbonized flame, the first step when welding the blade height, width should be larger than the nominal size of 2mm, to prepare the second step with the plastic, after the completion of welding with straw bury buried, slowly cooled to room temperature. The second step should be straw ash