华南理工大学学报(自然科学版) ›› 2017, Vol. 45 ›› Issue (1): 137-144.doi: 10.3969/j.issn.1000-565X.2017.01.020

• 机械工程 • 上一篇    

钛合金TC4 低塑性滚压表面完整性的实验研究

杨东1 刘战强1 贺蒙1 庞继有2 叶洪涛2   

  1. 1. 山东大学 机械工程学院//高效洁净机械制造教育部重点实验室,山东 济南 250061; 2. 中国航发沈阳黎明航空发动机有限责任公司,辽宁 沈阳 110043
  • 收稿日期:2016-04-08 修回日期:2016-08-08 出版日期:2017-01-25 发布日期:2016-12-01
  • 通信作者: 杨东( 1985-) ,男,博士生,主要从事高速加工表面完整性研究. E-mail:me_yangdong@yeah.net
  • 作者简介:杨东( 1985-) ,男,博士生,主要从事高速加工表面完整性研究.
  • 基金资助:

    国家自然科学基金资助项目( 51425503,51375272) ; 国家科技重大专项( 2015ZX04005008,2014ZX04012014) ; 山东省泰山学者建设工程专项资金资助项目( TS20130922)

Experimental Investigation into Surface Integrity of Titanium TC4 after Low-Plasticity Burnishing

YANG Dong1 LIU Zhan-qiang1 HE Meng1 PANG Ji-you2 YE Hong-tao2   

  1. 1.School of Mechanical Engineering//Key Laboratory of High Efficiency and Clean Mechanical Manufacture of the Ministry of Education,Shandong University,Jinan 250061,Shandong,China; 2.AEEC Shenyang Liming Aero-Engine Co.,Ltd.,Shenyang 110043,Liaoning,China
  • Received:2016-04-08 Revised:2016-08-08 Online:2017-01-25 Published:2016-12-01
  • Contact: 杨东( 1985-) ,男,博士生,主要从事高速加工表面完整性研究. E-mail:me_yangdong@yeah.net
  • About author:杨东( 1985-) ,男,博士生,主要从事高速加工表面完整性研究.
  • Supported by:
    Supported by the National Natural Science Foundation of China( 51425503, 51375272) and the National Science and Technology Major Project of China( 2015ZX04005008, 2014ZX04012014)

摘要: 以钛合金TC4 为研究对象,选择表面完整性评价标准数据组( 包括表面形貌、表面粗糙度、表面层显微硬度和表面残余应力) 作为评价指标,采用单因素试验设计法,利
用光学轮廓仪、显微硬度计和盲孔法残余应力测量仪获得低塑性滚压加工表面形貌、微观硬度分布和残余应力状态,对比分析了工艺参数( 滚压速度、进给速度、液压油预压力和滚压道次) 对低塑性滚压加工表面完整性的影响程度.结果表明: 液压油预压力对滚压加工表面形貌、表面粗糙度及加工表面显微硬度和残余应力的影响程度最大,滚压速度的升高会增大加工表面粗糙度值,增加滚压道次会使加工表层硬化程度和残余压应力幅值变大; 在设计实验范围内,钛合金TC4 低塑性滚压加工采用高的液压油预压力和多道次加工可获得更优的加工表面完整性.

关键词: 低塑性滚压, TC4, 表面完整性, 工艺参数, 实验设计

Abstract:

Through single factor test method,the surface topography,micro-hardness distribution and residual stress of titanium TC4 after a low-plasticity burnishing are obtained by using an optical profiler,a micro-hardness tester and a residual stress test instrument,and the surface integrity of the burnished titanium TC4 is evaluated by using the standard data of the topography,roughness,micro-hardness and residual stress of surface.Then,the effects of low-plasticity burnishing parameters ( including burnishing speed,feed speed,hydraulic oil pressure and burnishing passes) on the surface integrity are analyzed comparatively.The results show that ( 1) the hydraulic oil pressure has the most significant effect on the topography,roughness,micro-hardness and residual stress of the burnished surface; ( 2) the surface roughness increases with the burnishing speed,and both the micro-hardness and the residual stress increase with the burnishing passes; and ( 3) higher hydraulic oil pressure and more burnishing passes help achieve a higher surface integrity in the low-plasticity burnishing of titanium TC4.

Key words: low plasticity burnishing, TC4, surface integrity, process parameter, experimental design

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