近年来,国內外对鑄鈇件缺陷的电弧焊补取得很大的效果,但用这种方法在不預热情况下焊补較大工件上的缺陷时,焊补处很难得到完全滿意的加工性能或强度指标。电渣焊接过程与电弧焊相比较,具有强大的热源和对工件加热与冷却緩慢的特点。这一特点对于鑄鈇焊接(焊补)时消除白口组織和防止产生裂縫十分有利。国 In recent years, domestic and foreign cast castings defects arc welding to obtain great effect, but using this method without preheating the case of welding larger defects on the workpiece, welding repair hard to be completely satisfied Processing performance or strength index. Electroslag welding process compared with the arc welding, with a strong heat source and the workpiece heating and cooling slowly. This feature is very beneficial for the elimination of whiteheads and the prevention of cracks during cast welding (welding). country