By security analyses , evaluation to crack of boiler in power plant , a elding project was constituted , which type is dg670 / 140 - 8 摘要通过对某电厂7 (上标# ) dg670 / 140 - 8型燃煤锅炉汽炉裂纹进行安全性分析、评价，确定焊接修复方案。
2.
This chamfering machine employs the principle of rolling shear to shear the edge of the steel plate according to the angel needed , to obtain the bevel for w - elding 该倒角机利用滚剪原理，对钢板边缘按所需角度进行剪切，以得到焊接所需坡口。
