Cr含量和加热温度对高铁弹条用60Si2Mn弹簧钢脱碳层的影响

通过提高高铁铁轨扣件系统中的弹条用60Si2Mn弹簧钢中的Cr元素含量,分析了不同加热温度下钢的脱碳情况,研究了Cr元素以及加热温度对60Si2Mn弹簧钢脱碳层组织形貌及厚度的影响.结果表明,Cr元素含量提高至0.35％后,弹簧钢在不同加热温度下的脱碳层厚度都有明显减少,当加热温度在900℃以上时只存在部分脱碳现象,且...

Effect of Cr content and heating temperature on decarburized layer of 60Si2Mn spring steel for high-speed rail spring

Through increasing Cr element content in the 60Si2Mn spring steel for fastener system of high-speed rail and analyzing its decarburization under different heating temperature, the influence of Cr element and heating temperature on microstructure and thickness of the decarburized layer on the spring steel were determined. The results show that the thickness of the decarburized layer under different heating temperatures is obviously reduced when increasing the Cr element content to >0.35%, and only partial decarburization exists when the heating temperture is above 900 ℃. At the same time, the thickness of the decarburized layer increases with the increase of heating temperature.