气孔  

①CO2气体不纯或供气不足                                                                                                                                                                                                                                          ②焊时卷入空气
③预热器不起作用
④风大、保护不完全
⑤喷嘴被飞溅物堵塞、不通畅
⑥喷嘴与工件的距离过大                                                                                                                                                                                                                                              ⑦焊接区表面被污染、油、锈、水分未清除
⑧电弧过长、电弧电压过高
⑨焊丝焊硅，锰量不足  

咬边  

①电弧太长，弧压过高                                                                                                                                                                                                                                                          ②焊接速度过快                                                                                                                                                                                                                                                                                ③焊接电流太大
④焊丝位置不当，没对中
⑤焊丝摆动不山东自动焊接设备http://www.tayfsk.com
育苗基质http://www.lqzm.com
豪沃HOWO配件  http://www.jnhyzqpj.com
山东印刷包装http://www.sdyszb.com
空气净化工程http://www.jnyhrs.com当