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汽车和拖拉机的汽缸体、汽缸盖等机件都是由灰口铸铁,如 HT21—40、HT24—48等铸成的。在使用过程中常出现裂纹等缺陷,使大量的汽缸体、汽缸报废,造成很大的损失。因此,汽缸体、汽缸盖的焊补就成为生产上迫切需要解决的一个问题。全国劳动模范,气焊老工人薛玉昆同志,活学活用毛主席著作,克服了没有文化、不懂电焊等困难,经过不断试验,终于掌握了一套焊补汽缸体等薄壁铸件的方法,并试验成功了铜钢焊条。几年来,薛玉昆同
Cylinders, cylinder heads and other parts of automobiles and tractors are made of gray cast iron, such as HT21-40, HT24-48 and other castings. Cracks and other defects often occur during use, so that a large number of cylinder block, cylinder scrapped, resulting in great losses. Therefore, the cylinder block, cylinder head welding repair has become an urgent need to address the production of a problem. National model worker, old worker Xue Yukun gas welding live, live and learn to use Chairman Mao, to overcome the lack of culture, do not understand welding and other difficulties, after continuous testing, and finally mastered a set of welding methods such as thin-walled cylinder body casting and test Successful copper steel electrode. In recent years, Xue Yu Kun with