TA15钛合金齿轮结构电流辅助微成形工艺研究

doi:10.3901/JME.2021.01.210

机械工程学报 ›› 2021, Vol. 57 ›› Issue (1): 210-216.doi: 10.3901/JME.2021.01.210

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TA15钛合金齿轮结构电流辅助微成形工艺研究

包建兴^1,2, 徐杰^1,2, 曲家正^1,2, 白嘉楠^1,2, 单德彬^1,2, 郭斌^1,2

1. 哈尔滨工业大学微系统与微结构制造教育部重点实验室哈尔滨 150080;
2. 哈尔滨工业大学材料科学与工程学院哈尔滨 150001

收稿日期:2020-02-06 修回日期:2020-06-11 出版日期:2021-01-05 发布日期:2021-02-06
通讯作者: 徐杰(通信作者),男,1980年出生,博士,教授,博士研究生导师。主要研究方向为微纳成形理论、技术与装备。E-mail:xjhit@hit.edu.cn
作者简介:包建兴,男,1989年出生,博士研究生。主要研究方向为难变形材料电场辅助微成形。E-mail:jxbbao@126.com
基金资助:
国家自然科学基金重点项目（51635005）和装备预研基金重点（6140923020301）资助项目。

Electrically-assisted Micro-forming Process of Gear Structure in TA15 Titanium Alloy

BAO Jianxing^1,2, XU Jie^1,2, QU Jiazheng^1,2, BAI Jianan^1,2, SHAN Debin^1,2, GUO Bin^1,2

1. Key Laboratory of Micro-Systems and Micro-microstructures Manufacturing of Ministry of Education, Harbin Institute of Technology, Harbin 150080;
2. School of Materials Science and Engineering, Harbin Institute of Technology, Harbin 150001

Received:2020-02-06 Revised:2020-06-11 Online:2021-01-05 Published:2021-02-06

摘要/Abstract

摘要： 针对钛合金室温塑性差、高温成形模具易损坏、成形精度差等问题，提出了TA15钛合金微齿轮结构电流辅助微成形工艺。利用有限元模拟和实验相结合的方法，分析了浮动成形和分流孔直径对微齿轮电流辅助成形载荷和流动行为的影响规律。结果表明浮动成形降低了微齿轮的成形载荷并有利于齿形下端角的填充，中空分流时分流孔直径为2.3～2.5 mm成形载荷和坯料填充流动最佳。对微齿轮结构进行显微组织和成形性能分析，结果显示，齿形填充完整度较好，金属流线沿轮廓分布，齿面力学性能分布均匀，等轴组织基本被保持。

关键词: 齿轮结构, 电流辅助成形, 中空分流, 微成形, 钛合金

Abstract: The processing technology of titanium alloy is a significant challenge in micro-manufacturing field owing to the worse plasticity under the room temperature, easily damaged die at high temperature and low controllability of the shape. For this purpose, the electrically-assisted micro-forming (EAMF) of micro-gears structure is conducted for TA15 titanium alloy. The effects of floating forming and diverging hole diameter on the forming load and flow behavior of micro-gears structure are simulated by finite element method. The results show that the floating forming reduces the forming load of the micro-gear and is beneficial to the filling of the bottom corners for tooth profile. The forming load and filling flow capacity are best when the diameter of diverging hole is 2.3-2.5 mm. The microstructure and formability analysis show that there are complete tooth profile, obvious metal flown line along contour, uniformly distributed mechanical properties of gear surface and almost unchanged equiaxed structure.

Key words: gear structure, electrically-assisted forming, inside divided flow, micro-forming, titanium alloy

中图分类号:

TG316

包建兴, 徐杰, 曲家正, 白嘉楠, 单德彬, 郭斌. TA15钛合金齿轮结构电流辅助微成形工艺研究[J]. 机械工程学报, 2021, 57(1): 210-216.

BAO Jianxing, XU Jie, QU Jiazheng, BAI Jianan, SHAN Debin, GUO Bin. Electrically-assisted Micro-forming Process of Gear Structure in TA15 Titanium Alloy[J]. Journal of Mechanical Engineering, 2021, 57(1): 210-216.

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TA15钛合金齿轮结构电流辅助微成形工艺研究

Electrically-assisted Micro-forming Process of Gear Structure in TA15 Titanium Alloy

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