| 40Cr钢磨削强化温度与冷却速度研究 |
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| 引用本文： | 肖冰,李曙生,苏宏华,傅玉灿,徐鸿钧,徐九华.40Cr钢磨削强化温度与冷却速度研究[J].南京航空航天大学学报(英文版),2008,25(1):26-31. |
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| 作者姓名： | 肖冰 李曙生 苏宏华 傅玉灿 徐鸿钧 徐九华 |
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| 作者单位： | 1. 南京航空航天大学江苏省精密与微细制造技术重点实验室,南京,210016,中国
2. 南京航空航天大学江苏省精密与微细制造技术重点实验室,南京,210016,中国;泰州职业技术学院机电工程系,泰州,225300,中国 |
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| 基金项目： | 江苏省自然科学基金
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泰州市科技发展计划 |
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| 摘 要： | 以40Cr调质钢为磨削强化试验对象，进行了磨削强化温度的测量和冷却速度的确定，并对强化效果进行了分析研究。试验结果表明：预估温度与测量温度接近，可以获得所要求的磨削强化温度和冷却速度；获得了理想的强化效果，强化层平均显微硬度为HV670，厚度接近1．3mm，组织为细小的针状马氏体。
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| 关 键 词： | 磨削 强化 加热 冷却 |
| 文章编号： | 1005-1120(2008)01-0026-06 |
| 修稿时间： | 2006年7月14日 |
GRINDING TEMPERATURE AND COOLING RATE DURING GRIND-HARDENING OF 40Cr STEEL |
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| Xiao Bing,Li Shusheng,Su Honghua,Fu Yucan,Xu Hongjun,Xu Jiuhua.GRINDING TEMPERATURE AND COOLING RATE DURING GRIND-HARDENING OF 40Cr STEEL[J].Transactions of Nanjing University of Aeronautics & Astronautics,2008,25(1):26-31. |
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| Authors: | Xiao Bing Li Shusheng Su Honghua Fu Yucan Xu Hongjun Xu Jiuhua |
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| Abstract: | The mathematical model of the grinding temperature is established. The grinding temperature and the cooling rate are measured in the grind-hardening process of 40Cr steel under different conditions. Moreover, the grind-hardening effects are investigated. Experimental results show that the calculated temperatures are comparatively close to the measured ones, and the required temperature and cooling rate can be achieved. Furthermore, the microstructure of the hardened zone is similar to that obtained through the high-frequency induction technique. The average hardness of the entirely hardened zone is HV670 and the thickness of the hardened layer is adjacent to 1.3 mm. It indicates that the hardening mechanism induced by the grinding heat and high-frequency heating is identical.Finally, the fine needlelike martensite is obtained. |
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| Keywords: | grinding(machining) hardening heating cooling |
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