摘要
为了得到较深的淬硬层,利用田口稳健设计方法,并通过Deform软件的热处理模块对支承辊的淬火过程进行数值模拟分析,以马氏体体积分数50%处的深度为目标值,选取淬火方式、淬火温度、冷却时间和淬火介质温度为控制因素,淬火温度的测量误差、工件转移时间和车间温度为噪声因素,对大型支承辊的淬火工艺参数进行设计优化,找到了影响目标值的显著因素,得到最优的淬火工艺为920℃喷雾淬火,冷却时间为7 h,淬火介质温度为60℃。对初始和最优淬火工艺方案分别进行了模拟计算,结果表明,马氏体层由原来的119.4 mm加深到196.8 mm。
In order to obtain deeper hardening layer, quenching process of backup roller was simulated by the heat treatment module of Deform software, and the Taguchi robust design method was used. Hardening depth with martensite volume fraction 50% was chosed as target value. Quenching method, austenizing temperature, cooling time and medium temperature were selected as control factors. The measurement error of quenching temperature, workpiece transfer time and workshop temperature were selected as noise factors. By optimizing the design of quenching process parameters of large backup roller, significant factors affecting the target value are found that austenizing temperature is 920 ~C spray quenching for 7 h and quenching medium temperature is 60 ~C. The results of simulated calculation on the initial and optimum quenching processes show that the hardening depth is from 119.4 mm to 196.8 mm, so it is greatly increased.
出处
《金属热处理》
CAS
CSCD
北大核心
2013年第7期86-89,共4页
Heat Treatment of Metals
基金
国家自然科学基金(51072240)
关键词
数值模拟
支承辊
淬火工艺
稳健设计
numerical simulation
backup roller
quenching process
robust design
