为弄清机车圆柱压缩螺旋弹簧热卷成形时表层开裂的原因，对制造此种弹簧的φ38 mm热轧60Si2Mn钢进行了化学成分、表层金相组织等分析后，采用波谱法和剥层分析法确定了该材料在(1 050±50）℃的煤气燃烧炉内加热1．3～1．5 h后表层显著增硫是造成弹簧热卷成形时其外侧表面层开裂的根本原因。 为避免加热时对钢表层的硫腐蚀，除对材料表面质量提出了进一步的要求外，还提出了采用可控气氛，对发生炉煤气进行脱硫处理及使用低硫无烟煤作发生炉煤气的原料等解决措施。文中立足现有设备条件而采用后者亦很好地解决了此问题。，To find the reason why surface layer is crazed when cylinder compress coil spring coil and forming at high temperature,the composition and surface metallographic microstructure of φ38 mm heat rooled 60Si2Mn steel is analyzed.Then the spectral analysis and skiving layer analysis show that the fundamental reason of coil spring outside crazed is remarkable increased sulphur on surface after this material heat at (1 050±10）℃×（1．3～1．5） h in alkynes gas burning stove when the spring heat coil forming at high temperature. In order to void sulphur corrosion of steel surface layer when it is heated,in addition to more requirement of material surface quality,this paper gives some measure that alkyne gas of producer is given a desulfidation process by controlling the atmosphere in the producer and that use the alkyne of low sulphur and without smoke as row material.Based on the current equipment the author resolves this problem well by using the latter.，