我局高坡地区货车副风缸连续发生焊缝开焊故障,造成制动失灵,编后甩车,打乱了运输秩序,直接威胁着行车安全。为弄清原因,我们除对193辆车进行统计分析外,并于1982年1～4月在齐齐哈尔站修线对开焊的副风缸进行了切割检查和用两种焊修方 My bureau Gaopo region truck vice cylinder continuous weld seam welding failure, resulting in brake failure, compiled after the rejection of the car, disrupted the transport order, a direct threat to traffic safety. In order to clarify the reasons, we conducted a statistical analysis on 193 vehicles, conducted a cutting inspection of the open-air secondary air cylinder at a station in Qiqihar from January to April 1982, and used two kinds of welding repairs