摘要
提出了一种计算气体渗碳过程中碳传递系数的方法,结合钢箔渗碳试验获得精确的碳传递系数。利用Thermal Prophet软件模拟了钢箔渗碳过程。结果表明,渗碳过程中碳传递系数是钢箔表面碳浓度的函数,随表面碳浓度的增大而减小。当表面碳浓度从0.036%增加到1.03%时,碳传递系数下降79.4%。通过对比模拟结果和实测的碳浓度分布曲线证明了本文测定的碳传递系数优于其他经验公式。
A method of calculating the carbon mass transfer coefficient during gas carburizing was put forward. The carbon transfer coefficient was accurately measured by the method combined with carburizing tests of steel foil. The carburizing process of steel foil was simulated by Thermal Prophet heat treatment simulation software. The results indicate that the carbon transfer coefficient during carburizing is a function of the surface carbon content of steel foil and it reduces with the increase of the surface carbon content. As the surface carbon content increases from 0. 036% to 1. 03%,the carbon transfer coefficient declines in 79. 4%. The comparisons of numerical simulations with experimental data for carbon concentration profiles demonstrate that the expression is superior to other empirical formulas.
出处
《金属热处理》
CAS
CSCD
北大核心
2016年第1期211-216,共6页
Heat Treatment of Metals
基金
国家重点基础研究发展计划(973计划)(2011CB706604)
关键词
气体渗碳
碳传递系数
碳扩散系数
质量守恒
计算机模拟
gas carburizing
carbon transfer coefficient
carbon diffusivity
mass conservation
computer simulation
作者简介
刘博勋（1992-），男，硕士研究生，主要研究方向为热处理的数值模拟，E—mail：boboo@sjtu．edu．cn。
通讯作者：顾剑锋，教授，联系电话：021-34203743，E-mail：gujf@sjtu．edu．cn
