By using manual arc welding to repair the big kiln circle, the welding process of ZG310-570 super thick cast steel piece was a success, with good running effect observed for more than 5 years.

• 通过对大窑轮圈采用手工电弧焊的方法进行修复,成功地解决了ZG310-570铸钢特大厚件的焊接工艺,经过5年多的运行观察,使用效果良好。