中国机械工程

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机器人砂带磨削GH4169镍基高温合金表面完整性研究

段练1,2;黄云1,2;邹莱1,2   

  1. 1.重庆大学机械传动国家重点实验室,重庆,400044
    2.重庆市材料表面精密加工及成套装备工程技术研究中心,重庆,400021
  • 出版日期:2019-09-10 发布日期:2019-09-11
  • 基金资助:
    重庆市基础科学与前沿技术研究专项(cstc2016jcyja0066);
    中央高校基本科研业务费专项资金资助项目(106112016CDJZR288804)

Research on Surface Integrity of GH4169 Nickel-based Superalloys by Robotic Belt Grinding

DUAN Lian1,2;HUANG Yun1,2;ZOU Lai1,2   

  1. 1.The State Key Laboratory of Mechanical Transmission,Chongqing University,Chongqing,400044
    2.Chongqing Engineering Research Center for Material Surface Precision Machining and Whole Set Equipment,Chongqing,400021
  • Online:2019-09-10 Published:2019-09-11

摘要: 采用机器人夹持GH4169镍基高温合金来进行砂带磨削试验。对试验装置进行了设计和分析,以确保砂带磨削过程中的磨削压力稳定;采用正交试验获得砂带磨削GH4169时的磨削深度;采用单因素试验确定砂带线速度和磨削压力对GH4169表面完整性的影响规律。试验结果表明:采用粒度为80号的陶瓷磨粒砂带加工GH4169时,其表面粗糙度在0.6~0.7 μm范围内,且随着砂带线速度的增大而减小,随着磨削压力的增大而增大,表面硬度在430~485HV范围内,表面残余应力均为残余压应力,其值在-410~ -60 MPa范围内。

关键词: GH4169镍基高温合金, 砂带磨削, 磨削深度, 表面完整性

Abstract: The belt grinding tests of GH4169 nickel-based superalloys were carried out by robot. The test equipment was designed and analyzed to ensure the stability of grinding pressures. The grinding depths of GH4169 were obtained by orthogonal tests during the belt grinding processes. Single factor tests were used to determine the effects of belt linear speeds and grinding pressures on the surface integrity of GH4169.The testing results show that when GH4169 is machined with ceramic abrasive belt with particle size of 80, the surface roughnesses are as 0.6~0.7 μm, and decrease with the increasing of belt linear speeds, and increase with the increasing of grinding pressures. The surface hardness values are as 430~485HV, and the surface residual stresses are all residual compressive stresses, and the values are as -410~ -60 MPa.

Key words: GH4169 nickel-based superalloy, belt grinding, grinding depth, surface integrity

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