基于灰色关联度的筒形件热处理工艺参数优化
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摘要
采用正交试验法,选取退火温度、保温时间、冷却方式3个工艺参数为试验因素,以热处理后工件的抗拉强度和布氏硬度为评价指标,并按正交试验表进行了9组试验。通过对灰色关联系数和灰色关联度的计算和分析,进而实现多目标参数优化,获得了优化的热处理工艺参数组合及热处理工艺参数对评价指标的影响程度顺序。结果表明:影响锡青铜筒形件力学性能的工艺参数顺序依次为:退火温度>保温时间>冷却方式,工件采用优化的工艺参数组合进行热处理后,其力学性能比一般热处理后的更高。
Taking the annealing temperature,holding time and cooling method as experimental factors and the tensile strength and brinell hardness of the workpiece after heat treatment as evaluation indexes,nine groups of tests were conducted according to the orthogonal test table,and through the calculation and the analysis of the grey correlation coefficient and grey correlation degree,the multi-objective parameter optimization was realized to obtain the optimal heat treatment parameter combination and the order of influence of the heat treatment parameters on the evaluation index. The results show that the order influencing mechanical properties of the cylindrical parts is annealing temperature > holding time > cooling mode,and mechanical properties of the workpiece after heat treatment with optimized parameter combination are higher than that after the general heat treatment.
Taking the annealing temperature,holding time and cooling method as experimental factors and the tensile strength and brinell hardness of the workpiece after heat treatment as evaluation indexes,nine groups of tests were conducted according to the orthogonal test table,and through the calculation and the analysis of the grey correlation coefficient and grey correlation degree,the multi-objective parameter optimization was realized to obtain the optimal heat treatment parameter combination and the order of influence of the heat treatment parameters on the evaluation index. The results show that the order influencing mechanical properties of the cylindrical parts is annealing temperature > holding time > cooling mode,and mechanical properties of the workpiece after heat treatment with optimized parameter combination are higher than that after the general heat treatment.
引文
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[3]刘春景,唐敦兵,何华,等.基于灰色关联和主要成分分析的车削加工多目标优化[J].农业机械学报,2013,44(4):293-298.Liu C J,Tang D B,He H,et al.Multi-objective optimization of turning based on grey relational and principal component analysis[J].Transactions of the Chinese Society of Agricultural,2013,44(4):293-298.
[4]赵建社,郁子欣,周旭娇,等.基于灰色关联理论的钛合金电火花加工工艺参数优化试验[J].中国机械工程,2015,26(14):1877-1882.Zhao J S,Yu Z X,Zhou X J,et al.Experiments of parameter optimization of EDM titanium alloy based on gray relation theory[J].China Mechanical Engineering,2015,26(14):1877-1882.
[5]江鹏,袁同心,肖思进,等.热处理工艺对V-Ti-Ni氢分离合金显微组织和硬度的影响[J].稀有金属,2018,42(12):1260-1266.Jiang P,Yuan T X,Xiao S J,et al.Effect of heat treatment process on microstructure and hardness of V-Ti-Ni hydrogen separation alloy[J].Chinese Journal of Rare Metals,2018,42(12):1260-1266.
[6]卞宏友,左士刚,曲伸,等.激光沉积修复TA15/TC17热处理组织与力学性能[J].稀有金属,2014,38(6):283-290.Bian H Y,Zuo S G,Qu S,et al.Microstructure and mechanical properties of laser deposited TA15/TC17 after heat treatment[J].Chinese Journal of Rare Metals,2014,38(6):283-290.
[7]陈爱华,霍昌军,岳重祥,等.连续退火温度对高强IF钢组织及力学性能的影响[J].锻压技术,2018,43(7):192-196,208.Chen A H,Huo C J,Yue C X,et al.Effect of continuous annealing temperature on microstructure and mechanical properties of high strength IF steel[J].Forging&Stamping Technology,2018,43(7):192-196,208.
[8]杨华龙.连杆衬套温挤压预成形技术及数值模拟研究[D].太原:中北大学,2016.Yang H L.Study on Warm Extrusion Preforming Technology and Numerical Simulation of Connecting Rod Bushing[D].Taiyuan:North University of China,2016.
[9]GB/T 228.1-2010,金属材料拉伸试验第1部分:室温试验方法[S].GB/T 228.1-2010,Metallic matericals-Tensile testing-Part1:Method of test at room temperature[S].
[10]GB/T 231.1-2009,金属材料布氏硬度试验第1部分:试验方法[S].GB/T 231.1-2009,Metallic matericals-Brinell hardness testPart1:Test methods[S].
[11]GB/T 231.4-2009,金属材料布氏硬度试验第4部分:硬度值表[S].GB/T 231.4-2009,Metallic matericals-Hardness test-Part4:Table of hardness values[S].
[12]刘思峰,郭天榜,党耀国.灰色系统理论及其应用[M].北京:科学出版社,2014.Liu S F,Guo T B,Dang Y G.The Grey System Theory and Application[M].Beijing:Science Press,2014.