钛合金超声辅助等离子体氧化改性磨削基本加工特性研究

doi:10.3901/JME.2024.09.013

机械工程学报 ›› 2024, Vol. 60 ›› Issue (9): 13-25.doi: 10.3901/JME.2024.09.013

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钛合金超声辅助等离子体氧化改性磨削基本加工特性研究

武韩强¹, 陈卓¹, 叶曦珉¹, 张诗博¹, 李偲偲², 曾江¹, 汪强¹, 吴勇波¹

1. 南方科技大学机械与能源工程系深圳 518055;
2. 温州大学机电工程学院温州 325600

收稿日期:2023-05-06 修回日期:2023-10-15 出版日期:2024-05-05 发布日期:2024-06-18
作者简介:武韩强，男， 1996 年出生，博士研究生。主要研究方向为超声辅助等离子体氧化改性磨削。E-mail： 12031212@mail.sustech.edu.cn;吴勇波(通信作者)，男， 1961 年出生，博士，讲席教授，博士研究生导师。主要研究方向为多能场辅助精密超精密加工工艺与设备研发。E-mail： wuyb@sustech.edu.cn
基金资助:
国家自然科学基金(51975269)、广东省大学生科技创新能力培养专项资金(pdjh2023c20803)、国家重点研发计划(2021YFF0700903)和深圳市科技计划(KQTD20170810110250357)资助项目。

Fundamental Research on the Ultrasonic Assisted Plasma Oxidation Modification Grinding of Titanium Alloy

WU Hanqiang¹, CHEN Zhuo¹, YE Ximin¹, ZHANG Shibo¹, LI Sisi², ZENG Jiang¹, WANG Qiang¹, WU Yongbo¹

1. Department of Mechanical and Energy Engineering, Southern University of Science and Technology, Shenzhen 518055;
2. College of Mechanical and Electrical Engineering, Wenzhou University, Wenzhou 325600

Received:2023-05-06 Revised:2023-10-15 Online:2024-05-05 Published:2024-06-18

摘要/Abstract

摘要： 鉴于钛合金的难加工特性，提出了超声辅助等离子体氧化改性磨削新方法。首先介绍了新方法的加工原理，并基于加工原理构建了实验装置；其次就不同电解质溶液对等离子体氧化层生长方向，工艺参数对等离子体氧化层厚度的影响规律开展研究；随后表征等离子体氧化层表面主要化学成分、显微硬度，并利用单点磨削实验揭示等离子体氧化层的材料去除行为；最后对比有、无氧化层的磨削加工特性。研究表明： Na₂SO₄溶液下的氧化层主要向内生长；在工艺参数中，降低进给速度和增加超声振幅可以提升氧化层厚度；氧化层较低的硬度和疏松多裂纹结构提高了钛合金的切削加工性。相比于无氧化层的传统磨削，超声辅助等离子体氧化改性生成的氧化层可以降低磨削力，提升表面质量，减少砂轮磨粒脱落和磨屑粘附。

关键词: 钛合金, 超声, 等离子体氧化, 氧化层性能, 磨削性能

Abstract: In view of the poor grindability of titanium alloys, a new machining process, i.e., ultrasonic assisted plasma oxidation modification grinding (UAPOMG), is proposed to improve the grindability of the titanium alloys. The machining principle of the UAPOMG is introduced first, and the experimental apparatus is constructed based on the machining principle. Secondly, the effects of different electrolytes on the growth direction of the plasma oxidized layer and process parameters on the thickness of plasma oxidized layer are studied. Then, the main chemical composition and microhardness of the plasma oxidized layer are characterized, and the material removal behavior of the plasma oxidized layer is revealed by single point grinding experiment. Finally, the grinding performances involving titanium alloy samples with and without plasma oxidized layer are compared experimentally. The results show that the plasma oxidized layer mainly grows inward under the Na₂SO₄ electrolyte, and the slower feed rate and higher ultrasonic vibration amplitude give rise to the much thicker plasma oxide layer. Through the single point grinding test, it is found that the lower microhardness of the plasma oxidized layer with many cracks improves the grindability of titanium alloy. Compared with titanium alloy without oxidized layer, the oxidized layer obtained by the plasma with assistance of the ultrasonic vibration can reduce the grinding force and chip adhesion on the grinding wheel surface and improve the quality of the ground work-surface.

Key words: titanium alloy, ultrasonic vibration, plasma oxidation, oxidized layer properties, grindability

中图分类号:

TH706

武韩强, 陈卓, 叶曦珉, 张诗博, 李偲偲, 曾江, 汪强, 吴勇波. 钛合金超声辅助等离子体氧化改性磨削基本加工特性研究[J]. 机械工程学报, 2024, 60(9): 13-25.

WU Hanqiang, CHEN Zhuo, YE Ximin, ZHANG Shibo, LI Sisi, ZENG Jiang, WANG Qiang, WU Yongbo. Fundamental Research on the Ultrasonic Assisted Plasma Oxidation Modification Grinding of Titanium Alloy[J]. Journal of Mechanical Engineering, 2024, 60(9): 13-25.

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钛合金超声辅助等离子体氧化改性磨削基本加工特性研究

Fundamental Research on the Ultrasonic Assisted Plasma Oxidation Modification Grinding of Titanium Alloy

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