读者信箱焊机过载损坏是怎么回事？如何预防？答：焊机过载损坏主要是因为①焊接电流过大或由于短路等。使焊机电流超过或经常接近焊机额定工作电流；②使用额定负载持续率较低的焊机进行长时间连续的焊接；③焊接回路接头接触不良，或用其它金属物体替代焊接电缆作焊接回... Readers mailbox welding overload damage is how is it? How to prevent? A: Welder overload is mainly due to damage ① welding current is too large or due to short circuit. So that the welding current exceeds or is often close to the rated current of the welder; ② using a lower rated duty cycle welder for a long time continuous welding; ③ welding loop joint poor contact, or other metal objects instead of welding cable for welding back ...