摘要
对比研究了常规固体淬火、气态压缩空气淬火和气雾(氮气和水)淬火3种方式,发现气雾淬火具有最大的淬火能力和淬火速率调节范围。采用Box-Behnken模型对气雾淬火方式下加热温度、保温时间和开始淬火温度工艺进行三因素三水平响应曲面试验优化,并对试验结果进行回归分析,建立气雾淬火后工艺因素对板料力学性能的响应曲面模型并进行优化,得到了高强度22MnB5硼钢最佳气雾淬火工艺参数为:加热温度893.21℃,保温时间5.35 min,开始淬火温度706.09℃,淬火硬度预测值538.644 HV,与试验工况(893℃-5.35 min-706℃)的结果基本一致。
The methods of conventional solid quenching, gas compressed air quenching and water-nitrogen spray quenching were compared. The water-nitrogen spray was found to have the biggest quenching ability and the widest range of quenching rate. The effects of heating temperature,holding time and start quenching temperature on quenching hardness of high-strength steel 22 MnB5 were investigated and optimized when using water-nitrogen spray quenching process,while Box-Behnken experiment design of three factors and three levels was carried out by taking the above three process parameters as design factors. The cubic response surface models of quenching hardness are obtained based on the regression analysis prediction method and the results of experiment. The three process parameters and predicted quenching hardness were optimized： the highest predictive value of quenching hardness is 538. 644 HV when the heating temperature is893. 21 ℃,the holding time is 5. 35 min and the start quenching temperature is 706. 09 ℃,which is almost the same with the experiment（ 893 ℃-5. 35 min-706 ℃）.
出处
《材料热处理学报》
EI
CAS
CSCD
北大核心
2015年第10期230-235,共6页
Transactions of Materials and Heat Treatment
基金
国家自然科学基金重点项目(11272075)
中国博士后科学基金(2014M561223)
中央高校基本科研业务费专项资金(DUT14RC(3)032)
关键词
22MnB5硼钢
气雾淬火
响应曲面法
工艺优化
22MnB5 steel
water-nitrogen spray quenching
response surface optimization
process optimization
