换下除锈球，装上打磨片开始打磨切割时留下的毛刺
[img=,]https://img6.kcimg.cn/bbs/month_1405/1405272235805de3da64d8c473.jpg[/img]
毛刺处理好才能焊接
[img=,]https://img6.kcimg.cn/bbs/month_1405/1405272235b4085ad06eeeea00.jpg[/img] [img=,]https://img6.kcimg.cn/bbs/month_1405/1405272235b61f94d9b23c2d21.jpg[/img]