• CN:11-2187/TH
  • ISSN:0577-6686

机械工程学报 ›› 2018, Vol. 54 ›› Issue (17): 133-141.doi: 10.3901/JME.2018.17.133

• 特邀专栏:智能制造装备 • 上一篇    下一篇

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典型钛合金切削层相变形成机理及其影响因素研究

何耿煌1,2, 吴明阳3, 李凌祥1,3, 邹伶俐1, 程程1   

  1. 1. 厦门金鹭特种合金有限公司 厦门 361006;
    2. 密歇根大学机械工程学院 密歇根 48109 美国;
    3. 哈尔滨理工大学机械动力工程学院 哈尔滨 150080
  • 收稿日期:2017-09-19 修回日期:2018-01-19 出版日期:2018-09-05 发布日期:2018-09-05
  • 通讯作者: 吴明阳(通信作者),男,1971年出生,博士,教授。主要研究方向为难加工材料切削理论及刀具。E-mail:13936161878@139.com
  • 作者简介:何耿煌,男,1984年出生,博士,高级工程师。主要研究方向为智能制造、极端制造及其先进刀具技术。E-mail:sweetspyhgh@126.com;李凌祥,男,1970年出生,教授级高级工程师。主要研究方向为先进刀具产业化。E-mail:Li.lingxiang@cxtc.com;邹伶俐,女,1978年出生,高级工程师。主要研究方向为数控刀片研发与制造技术。E-mail:Zou.lingli@cxtc.com;程程,女,1985年出生,工程师。主要研究方向为先进切削及刀具测试技术。E-mail:cheng.cheng@cxtc.com
  • 基金资助:
    国家自然科学基金资助项目(51475128)。

Study on the Formation Mechanism of Phase Transformation and the Influencing Factors of Cutting Layer of the Typical Titanium Alloy

HE Genghuang1,2, WU Mingyang3, LI Lingxiang1,3, ZOU Lingli1, CHENG Cheng1   

  1. 1. Xiamen Golden Egret Special Alloy Co., Ltd., Xiamen 361006;
    2. Institute of Mechanical Engineering, University of Michigan, Michigan 48109, USA;
    3. School of Mechanical Engineering, Harbin University of Science and Technology, Harbin 150080
  • Received:2017-09-19 Revised:2018-01-19 Online:2018-09-05 Published:2018-09-05

摘要: 为研究钛合金已加工表面相变机理及其影响因素,首先通过分析切削过程中切削刃对切削区域的作用机制,采用能量法建立结构参数、切削三要素与切削耗能的数值描述模型,结合Matlab对模型进行求解,获知进给量f的变化对钛合金切削耗能W的影响最大,切削速度vc次之,而切削深度ap最小;为验证描述模型的正确性,采用2种不同几何结构不同牌号的硬质合金可转位刀片对典型钛合金TC1、TC4、TA5以及合金钢30CrMnSiA在正常空冷和氩气冷环境下进行对比试验,试验结果与描述模型间的误差较小,有效证明了描述模型的正确性,同时明确了钛合金已加工表面相变形成机理,并揭示了其发展的规律性。研究可为钛合金的高品质加工提供数据支撑。

关键词: 范性形变, 加工硬化, 耦合作用, 钛合金, 相变层

Abstract: In the view of denaturation mechanism and its influence factors of machined surface of titanium alloy, firstly, the action mechanism of cutting edge on the cutting area during cutting process is analyzed. The energy method is used to establish the model of structure parameters, three factors of cutting and cutting energy consumption. The model is solved combined with Matlab. The influence of feed rate f on the cutting energy consumption W of titanium alloy is the biggest, cutting speed vc is the second, and the influence of cutting depth ap is the least. In order to verify the validity of the model, two kinds of different type of cemented carbide index-able inserts are used to conduct the contrast experiments of titanium alloy TC1, TC4, TA5 and alloy steel 30CrMnSiA under the conditions of normal air cooling and argon cooling. Meanwhile, the denaturation mechanism of machined surface of titanium alloy is defined as well as the regularity of the development. The research results can offer data support for the high quality processing of titanium alloy.

Key words: coupling effect, phase transformation layer, plastic deformation, titanium alloy, work hardening

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