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就ZG45Ⅱ滚圈发生开裂的原因作了介绍 ,确定了采用手工电弧焊的施工方法 ,经实践 ,成功地解决了ZG45Ⅱ特大厚壁件的焊接 ,使用效果良好
ZG45 Ⅱ rolling ring on the cause of the cracking were introduced to determine the use of manual arc welding construction methods, practice, successfully solved the ZG45 Ⅱ extra large thick-walled pieces of welding, the use of good results