铸铁气缸体无论采取那种焊按方法焊补,往往在焊缝中产生气孔和砂眼,特别是冶焊缸体更为突出。一经水压试验,更加明显,如再重新焊补,往往出现越焊越漏、气孔越多。用挂焊锡(钎焊)涂铅油来弥补,过些日子后,在焊缝处仍有渗水或漏水现象。下面介绍几种土办法,供各地焊工与修理工师傅们参考。 Regardless of the kind of welding cast iron cylinder block welding method, often in the weld porosity and trachoma, especially the metallurgical welding cylinder is more prominent. Once the hydrostatic test, more obvious, such as re-welding, often appear more solder leakage, more pores. With hanging solder (soldering) coated lead oil to make up, after some days, there is still water seepage or leaking at the weld. Here are some of the soil method for all over the welder and repairman master reference.