蒸汽机车过热管弯头漏泄是蒸汽机车锅炉的主要惯性病害,尤其是建设型、人民型和胜利型机车发生过热管弯头漏泄的比较多,而前进型机车则较少发生。我局从1977年以来,配属建没型机车188台,占总配属台数的60％左右。1978年,该型机车出现过热管漏泄的有315台次共571组,其中过热管弯头发生漏泄的有139台次共208组。1979年过热管出现漏泄的为316台次568组,其中弯头部位漏泄的有103台次124组(不包括架 Steam locomotive overheat pipe elbow leakage is the main inertia of steam locomotive boiler disease, especially in construction-based, people-oriented and victorious locomotive overheating pipe elbow leak more, while the forward locomotive is less likely to occur. Since 1977, our bureau has been equipped with 188 non-locomotives, accounting for about 60% of the total number of locomotives. In 1978, there were 315 sets of 571 sets of overheated pipes in this type of locomotive. There were 208 sets of 139 sets of leaks in the overheat pipe elbows. There were 316 sets of 568 sets of leaks in the overheated pipes in 1979, of which there were 103 sets of 124 sets of leakages in the elbow parts