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山东煤矿泰安机械厂和哈尔滨焊接研究所共同研究的单体液压支柱等离子焊接工艺于1987年9月21日通过部、局级鉴定。鉴定会由煤炭部制造局主持。参加会议的有部制造局、煤科院,哈尔滨焊接研究所、山东煤管局、部铆焊分站及部分大专院校和有关煤机厂、矿务局等20多个单位34名代表。单体液压支柱等离子焊接工艺有以下几个特点: 1.在国内首次采用了双工位双枪一次焊接两条环缝,焊前不需开坡口,焊时不需用
Shandong coal mine machinery factory in Tai’an and Harbin Institute of Welding jointly study the single hydraulic prop plasma welding technology in September 21, 1987 through the Ministry of appraisal. Appraisal will be hosted by the Bureau of Coal Production. Participated in the meeting of the Manufacturing Bureau, Coal Research Institute, Harbin Institute of Welding, Shandong Coal Authority, the Ministry of riveting sub-station and some tertiary institutions and the coal mines, mining bureau more than 20 units 34 representatives. Single hydraulic props plasma welding process has the following characteristics: 1 in the country for the first time using a double-station double gun once welded two ring joints, without welding before the groove, welding without