锻压温度对数控机床差速内齿圈高低温磨损性能的影响

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英文篇名：Effect of Forging Temperature on High and Low Temperatures Wear Resistance of Differential Inner Gear Rings for Numerical Control Machine Tool 作者：罗应娜 ; 孙惠娟 英文作者：LUO Yingna;SUN Huijuan;Chongqing Industry Polytechnic College; 关键词：锻压温度 ; 高低温磨损性能 ; 始锻温度 ; 终锻温度 ; 差速内齿圈 英文关键词：forging temperature;;wear resistance at high and low temperature;;initial forging temperature;;finish forging temperature;;differential inner gear ring 中文刊名：SJGY 英文刊名：Hot Working Technology 机构：重庆工业职业技术学院; 出版日期：2018-02-10 15:08 出版单位：热加工工艺 年：2018 期：v.47;No.481 基金：重庆市教委科学技术研究资助项目(自然科学类KJ1603001) 语种：中文; 页：SJGY201803042 页数：4 CN：03 ISSN：61-1133/TG 分类号：151-153+156

摘要

采用不同的始锻温度与终锻温度进行了20Cr Mo H数控机床差速内齿圈锻压试验,并进行了-40℃低温和350℃高温磨损试验。结果表明:在试验条件下,随始锻温度从1100℃增至1200℃或者终锻温度从740℃增至820℃时,差速内齿圈高低温磨损性能先提高后下降。与1100℃始锻相比,1190℃始锻时差速内齿圈低温磨损体积减小62%,高温磨损体积减小63%;与740℃终锻相比,780℃终锻时差速内齿圈低温磨损体积减小52%,350℃高温磨损体积减小56.5%。20Cr Mo H数控机床差速内齿圈的始锻温度和终锻温度分别优选为1190、780℃。
        20 Cr Mo H differential inner gear rings for numerical control machine were forged by using different initial forging temperatures and final forging temperatures. And the wear resistance tests at low temperature of-40℃ and high temperature of 350℃ were carried out. The results show that under test conditions, the high and low temperature wear resistance of differential inner gear ring increases firstly and then decreases with initial forging temperature increasing from1100℃ to 1200℃ or final forging temperature increasing from 740℃ to 820℃. Compared with the initial forging at 1100℃,the low temperature wear volume of the inner gear ring forged at initial forging temperature of 1190℃decreases by 62% and the wear volume at high temperature decreases by 63%; compared with the finish forging temperature at 740℃, the low temperature wear volume of the inner ring gear forged at finish forging temperature of 780℃decreases by 52% and the wear volume at high temperature decreases by 56.5%. The optimized initial and finish forging temperatures of 20 Cr Mo H NC machine tool differential inner gear rings are 1190℃ and 780℃, respectively.

引文

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