China Mechanical Engineering ›› 2022, Vol. 33 ›› Issue (05): 577-582.DOI: 10.3969/j.issn.1004-132X.2022.05.006

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Research on Ice Fixation and Low Damage Machining Technology of Superalloy Honeycomb Cores

JIANG Shaowei1;WANG Yongqing1;LIU Kuo1;WU Xiaohui2;YANG Zijian1;YANG Yuebing1;YU Qingbo1;YANG Xiaolong2   

  1. 1.Key Laboratory for Precision and Non-traditional Machining Technology of Ministry of Education,Dalian University of Technology,Dalian,Liaoning,116024
    2.Beijing Xinghang Electromechanical Equipment Limited Company,Beijing,100074
  • Online:2022-03-10 Published:2022-03-24

高温合金蜂窝芯冰固持低损伤加工技术研究

姜少玮1;王永青1;刘阔1;武晓会2;杨子健1;杨月冰1;于清波1;杨晓龙2   

  1. 1.大连理工大学精密与特种加工教育部重点实验室,大连,116024
    2.北京星航机电装备有限公司,北京,100074
  • 通讯作者: 刘阔(通信作者),男,1983年生,教授、博士研究生导师。研究方向为超低温冷却加工技术、数控机床空间/热误差实时补偿技术等。E-mail:liukuo@dlut.edu.cn。
  • 作者简介:姜少玮,男,1993年生,博士研究生。研究方向为超低温冷却加工。E-mail:ShaoweiJiang@mail.dlut.edu.cn。
  • 基金资助:
    国家重点研发计划(2019YFB2005400);
    大连市高层次人才创新支持计划(2018RD05)

Abstract: Aiming at the machining problems of metal honeycomb core, such as thin-walled porosity, anisotropy, weak in-plane rigidity and low radial strength, a ice fixation and low damage machining method of superalloy honeycomb core was proposed. The principles of metal honeycomb core ice fixation clamping were analyzed, the adaptability and reliability of the machining systems were verified. A single factor test of honeycomb core ice fixation cryogenic cooling machining was carried out, the forming rule of honeycomb core machining defects was expounded. The results show that the clamping and machining methods of ice fixation cryogenic cooling are introduced in the machining of metal honeycomb cores, the cutting heat is reduced and the fixation constraint retention achieves during machining, which may improve the ability of the honeycomb wall to resist deformation . Among the cutting parameters, the feed rate has the greatest influence on the machining quality, and the tearing burr accounts for the highest proportion of the machining defects. The optimal cutting parameters may ensure good machining quality with low damage, low roughness and no deformation, and may achieve high quality and high efficiency machining of difficult-to-machine metal honeycomb cores.

Key words: honeycomb core, ice fixation, cryogenic cooling, superalloy, artificial ice

摘要: 针对金属蜂窝芯存在的薄壁多孔、各向异性、面内弱刚性、径向强度小等加工难题,提出了高温合金蜂窝芯冰固持低损伤加工方法。分析了金属蜂窝芯冰固持装夹原理,验证了工艺系统的适应性和可靠性。开展了蜂窝芯冰固持超低温冷却加工的单因素试验,阐明了蜂窝芯加工缺陷形成规律。试验结果表明:在金属蜂窝芯加工中引入冰固持超低温冷却的装夹和加工方式,可降低切削热,实现加工过程中的固持约束保持,从而提高蜂窝壁抵抗变形的能力;切削参数中进给速度对加工质量影响最大,加工缺陷中撕裂毛刺占比最高,采用最优切削参数进行加工可保证低损伤、低粗糙度、无变形的良好加工质量,可实现难加工金属蜂窝芯的高质高效加工。

关键词: 蜂窝芯, 冰固持, 超低温冷却, 高温合金, 人工冰

CLC Number: