张钊源,张维琨,张耀武,等.低温冷风微量润滑技术对TC6钛合金加工特性的应用研究[J].精密成形工程,2025,17(1):17-24.
ZHANG Zhaoyuan,ZHANG Weikun,ZHANG Yaowu,et al.Application of Cryogenic Air Minimum Quantity Lubrication Technology to TC6 Titanium Alloy Processing Characteristics[J].Journal of Netshape Forming Engineering,2025,17(1):17-24. |
| 低温冷风微量润滑技术对TC6钛合金加工特性的应用研究 |
| Application of Cryogenic Air Minimum Quantity Lubrication Technology to TC6 Titanium Alloy Processing Characteristics |
| 投稿时间：2024-09-04 |
| DOI：10.3969/j.issn.1674-6457.2025.01.003 |
| 中文关键词: TC6钛合金 低温冷风微量润滑 加工表面质量 粗糙度 车削参数 |
| 英文关键词: TC6 titanium alloy cryogenic air minimum quantity lubrication (CMQL) machined surface quality roughness turning parameter |
| 基金项目:国家自然科学基金(51905426);陕西省教育厅科学研究计划(23JK0606) |
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| 中文摘要: |
| 目的 探究机加工中低温冷风微量润滑技术对切削温度、材料塑性变形以及已加工表面质量的影响。方法 针对TC6钛合金进行低温冷风微量润滑切削加工应用试验，对比常温干切削和–27 ℃低温冷风微量润滑切削以及改变加工参数对TC6材料已加工表面缺陷、微观形貌及粗糙度的影响规律，分析低温冷风微量润滑加工应用特点。结果 相较于常温干切削，低温冷风微量润滑切削可以明显降低TC6材料在加工中因热量累积而导致的塑性变形，抑制了切削变形区材料与刀具因内摩擦加剧而导致的咬焊现象，减少了已加工表面黏屑、划痕、凹坑、撕裂、侧流等缺陷，有效提高了加工表面质量，与常温干切削加工相比，低温微量润滑切削的表面粗糙度值降低了19%;在加工参数为变量的切削中，提高进给量使已加工表面粗糙度值增加了49%，进给量对已加工表面质量的影响最大;提高背吃刀量使已加工表面粗糙度值增加了43%，背吃刀量对表面质量的影响次之;切削速度对表面质量的影响最小，但背吃刀量和切削速度的增加易使工艺系统产生振动，造成不稳定切削现象。结论 将低温冷风微量润滑技术应用在TC6材料的加工上对提高加工质量、满足低碳工业的需求具有一定的帮助。 |
| 英文摘要: |
| The work aims to investigate the effect of cryogenic air minimum quantity lubrication (CMQL) technology on cutting temperature, plastic deformation of material, and quality of machined surface. The application test of CMQL was carried out to machining of TC6 titanium alloy. The changes of surface defect, micro morphology and roughness of TC6 material under different machining parameters were compared between conventional cutting at room temperature and low temperature cutting at –27 ℃, and the application characteristics of CMQL machining were analyzed. Compared with conventional cutting at normal temperature, CMQL machining could significantly reduce the plastic deformation of TC6 materials caused by heat accumulation during processing, inhibit the galling phenomenon caused by internal friction between materials and tools in the cutting deformation area, reduce defects such as chip sticking, scratches, pits, tears, and side flows, and effectively improve the quality of the machined surface. The surface roughness machined by CMQL was 19% lower than that of dry cutting at room temperature. In cutting with variable machining parameters, increasing the feed rate increased the roughness value of the machined surface by 49%, which had the greatest effect on the quality of the machined surface. Increasing the depth of cut increases the roughness of the machined surface by 43%, and had the secondary effect on the surface quality. The increase of cutting speed had the least effect on the surface quality, but the increase of back cutting quantity and cutting speed was easy to cause vibration in the process system and lead to unstable cutting. Therefore, the application of CMQL machining technology in the processing of TC6 materials has certain help to improve the processing quality and meet the needs of low-carbon industry. |
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