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1981年锦州郊区火石厂与哈尔滨焊接研究所合作,在钢瓶生产中试验成功并使用了衬环组装、等离子弧焊封底、埋弧焊盏面工艺,使该厂钢瓶的焊接质量大大提高,一次焊接的合格率提高到90～95％以上。今年年初,又试验成功了缩口组装,等离子弧焊封底、埋弧焊盖面工艺,不仅节省了钢材,而且解决了缩口组装容易出现的烧穿问
In 1981, Jinzhou Suburban Flint Factory cooperated with Harbin Institute of Welding and successfully tested in cylinder production and used the lining ring assembly, plasma arc welding back cover and submerged arc welding surface technology to greatly improve the welding quality of the steel cylinder in the factory. The pass rate increased to 90 ~ 95% or more. Earlier this year, and successfully tested the necking assembly, plasma arc welding back cover, submerged arc welding cover technology, not only saves the steel, but also to solve the necking assembly prone to burn through asked