铸铁件焊修的方法很多，气缸盖气门座间裂纹的焊修采用手工电弧焊，只要工艺合理一般可不进行焊前预热。其修复工艺如下：１．清洗。首先用汽油、碱水对缸盖零件进行清洗，以免焊修时产生气孔、夹渣。２．查裂纹。较大的裂纹可以目测或借助放大镜观察出来。对看不见的细小... There are many ways of repairing the cast iron parts. The cracks between the valve seat and the cylinder head are repaired by manual arc welding. As long as the process is reasonable, welding can be preheated without welding. The repair process is as follows: 1. Cleaning. First of all, with gasoline, caustic cleaning of cylinder head parts, so as to avoid welding holes, slag. 2. Check crack. Larger cracks can be observed visually or with a magnifying glass. Invisible small ...