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在铸铁的补焊技术中,由于冷焊工艺具有简单、方便、经济性好以及劳动强度低等优点,所以它的发展很快。然而在具体应用中,目前的铸铁冷焊工艺和焊接材料仍有许多不足之处,以致不少生产现场的冷焊效果不够理想。仅以应用最多的灰口铸铁冷焊为例,其接头的白口、裂缝、气孔以及焊敷金属与母材不熔合等问题,至今仍未得到完满的解决。就焊接材料而言,“目前所有的铸铁冷焊用焊条,还没有一种焊条可以完全解决铸铁焊接上的
In the cast iron welding technology, because of cold welding process has the advantages of simple, convenient, good economy and low labor intensity, so it’s rapid development. However, in specific applications, the current cold-welding cast iron and welding materials still have many shortcomings, so that a lot of production site cold welding effect is not ideal. Only the most widely used gray cast iron cold welding, for example, the white joints, cracks, pores and weld metal and base metal is not fused and other issues, has not yet been fully resolved. In the case of welding materials, "all of the current cast iron cold welding electrodes, there is no one electrode can be completely solved cast iron welding