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为了改善包钢P74-60kg/m钢轨的质量,我们采用GAas80焊机所焊的这种钢轨的试样,进行了焊接性能的研究。一、焊接接头的性能试验 1.落锤试验共选取39个焊接接头,分别在北京和沈阳进行落锤试验,其试验条件是不同的。(北京:锤重1.0t,落高3.4m,支距1.Om;沈阳:锤重O.465t,落高6.8m,支距1.0m)。按照旧标准规定2锤不断为合格,我们的试验结果是所有的焊接接头均达到合格标准的要求。随后,又按新标准进行了试验(1锤不断为合格),共试验7个接头。其中6例
In order to improve the quality of Baotou P74-60kg / m rail, we used the samples of this kind of rail welded by GAas80 welder to study the welding performance. First, the performance test of welded joints 1. Drop hammer test selected a total of 39 welded joints, respectively, in Beijing and Shenyang drop hammer test, the test conditions are different. (Beijing: hammer weight 1.0t, 3.4m high, the branch distance 1.Om; Shenyang: hammer weight O.465t, fall 6.8m, the branch distance 1.0m). According to the old standard 2 hammers continue to be qualified, our test results are all welded joints meet the requirements of the eligibility criteria. Subsequently, according to a new standard was tested (1 hammer constantly qualified), a total of seven joints tested. 6 cases