| 吴锡转,刘福财,张若冲,胡晓冬,姚伟强,许雪峰.冷风静电微量润滑换热特性及其钛合金铣削加工性能研究[J].高技术通讯(中文),2023,33(8):872~882 |
| 冷风静电微量润滑换热特性及其钛合金铣削加工性能研究 |
| Research on heat transfer characteristics of cold air with electrostatic minimum quantity lubrication and its milling performance of titanium alloy |
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| DOI：10. 3772/ j. issn. 1002-0470. 2023. 08. 009 |
| 中文关键词: 冷风静电微量润滑(CAEMQL)； 钛合金； 换热特性； 铣削性能； 切屑形貌； 刀具磨损 |
| 英文关键词: cold air with electrostatic minimum quantity lubrication (CAEMQL), titanium alloy, heat transfer characteristics, milling performance, chip morphology, tool wear |
| 基金项目: |
| 作者 | 单位 | | 吴锡转 | （浙江工业大学特种装备制造与先进加工技术教育部/浙江省重点实验室杭州 310023） | | 刘福财 | | | 张若冲 | | | 胡晓冬 | | | 姚伟强 | | | 许雪峰 | |
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| 中文摘要: |
| 针对钛合金铣削温度高、刀具寿命短的问题，提出并开展了基于冷风静电微量润滑(CAEMQL)技术的钛合金加工新方法研究。在构建冷风静电微量润滑系统的基础上，研究了冷风荷电气雾的换热特性和钛合金铣削性能，通过刀具磨损揭示了刀具延寿机理。结果表明，与微量润滑、静电微量润滑和冷风微量润滑相比，冷风静电微量润滑具有更高的临界热流密度和更好的稳态换热性能；与微量润滑相比，冷风静电微量润滑下的切向铣削力Fx下降了21%，法向铣削力Fz下降了17%，铣削温度下降33%，工件表面粗糙度Ra值减少26%；冷风静电微量润滑下切屑自由面的褶皱高度降低，切屑背面划痕减少；低温压缩空气和荷电切削液协同作用抑制了刀具的粘着磨损，刀具寿命提高41%。 |
| 英文摘要: |
| In order to solve the problems of high milling temperature and short tool life of titanium alloy, a new machining method of titanium alloy based on cold air with electrostatic minimum quantity lubrication (CAEMQL) technology is proposed and carried out.Based on the development of the cold air with electrostatic minimum quantity lubrication system, the heat transfer characteristics and milling performance of titanium alloy of cold air with charged droplet are studied, and the mechanism of tool life extension is revealed by tool wear. The results show that cold air with electrostatic minimum quantity lubrication has higher critical heat flux and better steady state heat transfer performance than minimum quantity lubrication, electrostatic minimum quantity lubrication and cold air minimum quantity lubrication. Compared with minimum quantity lubrication, the tangential milling force Fx, normal milling force Fz, milling temperature and Ra value of work piece surface roughness under cold air with electrostatic minimum quantity lubrication are decreased by 21%,17%, 33% and 26%. When cold air with electrostatic minimum quantity lubrication is applied, the wrinkle height on the free surface and the scratch on the back of the chip could be reduced. The synergistic effect of cryogenic compressed air and charged cutting fluid inhibits the tool adhesion wear, and increases the tool life by 41%. |
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