60Si2Mn弹簧钢表面脱碳理论及试验研究

发布时间：2018-06-27 04:39

  本文选题：弹簧钢 + 菲克定律　； 参考：《材料热处理学报》2015年01期

【摘要】：通过表面脱碳热力学、动力学分析,采用菲克第二定律对钢坯表面脱碳层深度进行预测,建立弹簧钢脱碳层深度理论值计算模型,研究了保温时间、加热温度对60Si2Mn弹簧钢脱碳层深度的影响,并对弹簧钢完全脱碳机制进行分析,计算出60Si2Mn弹簧钢产生完全脱碳层深度最大时的温度。同时,利用实验室加热炉对60Si2Mn弹簧钢钢坯进行加热,采用金相法测量脱碳层厚度。结果表明:60Si2Mn弹簧钢总脱碳层和完全脱碳层深度与加热时间的平方根成正比;在空气气氛中,60Si2Mn弹簧钢存在最小脱碳条件,最小脱碳条件温度范围为900~1000℃,脱碳层深度在0.01~0.12 mm之间。
[Abstract]:Based on the thermodynamic and kinetic analysis of surface decarbonization, the depth of decarburized layer on billet surface was predicted by Fick's second law. The theoretical calculation model of decarburization depth of spring steel was established, and the holding time was studied. The effect of heating temperature on decarbonization depth of 60Si2Mn spring steel was studied. The mechanism of complete decarburization of 60Si2Mn spring steel was analyzed and the temperature of 60Si2Mn spring steel was calculated when the depth of complete decarbonization layer was maximum. At the same time, 60Si2Mn spring steel billet was heated by laboratory heating furnace, and the thickness of decarburized layer was measured by metallographic method. The results show that the depth of the total decarburization layer and the complete decarburization layer is proportional to the square root of the heating time, and the minimum decarburization condition exists in the air atmosphere, the minimum decarburization temperature ranges from 900 鈩，

本文编号：2072700