夏楠,马小刚,吴传宗,张亮,杨诗瑞,陈燕.磁力研磨工艺提高叶片表面质量的试验研究[J].表面技术,2023,52(2):67-77.
XIA Nan,MA Xiao-gang,WU Chuan-zong,ZHANG Liang,YANG Shi-rui,CHEN Yan.Experimental Investigation of Magnetic Finishing for Improving Blade Surface Quality[J].Surface Technology,2023,52(2):67-77
磁力研磨工艺提高叶片表面质量的试验研究
Experimental Investigation of Magnetic Finishing for Improving Blade Surface Quality
  
DOI:10.16490/j.cnki.issn.1001-3660.2023.02.007
中文关键词:  涡轮叶片  磁力研磨  表面粗糙度  残余应力  神经网络  气膜孔质量  服役寿命
英文关键词:turbine blade  magnetic grinding  surface roughness  residual stress  neural network  film hole quality  service life
基金项目:国家自然科学基金(51775258);辽宁省自然科学基金重点项目(20170540458);精密与特种加工教育部重点实验室基金(B201703)
作者单位
夏楠 辽宁科技大学 机械工程与自动化学院,辽宁 鞍山 114051 
马小刚 辽宁科技大学 机械工程与自动化学院,辽宁 鞍山 114051 
吴传宗 辽宁科技大学 机械工程与自动化学院,辽宁 鞍山 114051 
张亮 北京动力机械研究所,北京 100074 
杨诗瑞 北京动力机械研究所,北京 100074 
陈燕 辽宁科技大学 机械工程与自动化学院,辽宁 鞍山 114051 
AuthorInstitution
XIA Nan School of Mechanical Engineering and Automation, University of Science and Technology Liaoning, Liaoning Anshan 114051, China 
MA Xiao-gang School of Mechanical Engineering and Automation, University of Science and Technology Liaoning, Liaoning Anshan 114051, China 
WU Chuan-zong School of Mechanical Engineering and Automation, University of Science and Technology Liaoning, Liaoning Anshan 114051, China 
ZHANG Liang Beijing Power Machinery Institute, Beijing 100074, China 
YANG Shi-rui Beijing Power Machinery Institute, Beijing 100074, China 
CHEN Yan School of Mechanical Engineering and Automation, University of Science and Technology Liaoning, Liaoning Anshan 114051, China 
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中文摘要:
      目的 提高航空发动机涡轮叶片的服役年限。方法 应用磁力研磨工艺提高涡轮叶片表面质量,包括降低叶片表面粗糙度、去除飞秒激光制孔过程中产生的棱边毛刺以及降低叶片表面残余应力,建立神经网络模型确定最佳工艺参数,在最佳工艺参数下对叶片进行研磨加工。使用JB-8E触针式表面粗糙度测量仪、超景深显微镜和X'Pert Powder残余应力测试分析系统,分别对叶片表面粗糙度、孔口形貌以及叶片表面残余应力进行分析。结果 叶片在最佳工艺参数下完成研磨加工,叶片表面粗糙度从3.08 μm下降到0.19 μm,叶片气膜孔棱边毛刺基本去除,且存在倒圆迹象,研磨后叶片晶格更加致密,受力状态从残余拉应力(324.7 MPa)转变为残余压应力(132.8 MPa)。结论 应用磁力研磨工艺可以有效降低叶片表面粗糙度,去除叶片气膜孔的棱边毛刺,对气膜孔的棱边进行倒圆加工,提高飞秒激光制气膜孔的表面质量,同时还可以将叶片的残余拉应力转化为残余压应力,使得叶片晶格排布更加紧密,在提高叶片强度和耐磨性的同时不会引入新的缺陷,增加叶片的服役寿命。
英文摘要:
      To improve the service life of turbine blade, in this paper, The magnetic grinding was applied to improve the surface quality of turbine blade, including reducing the surface roughness of the blade, removing the edge burr generated in the process of femtosecond laser hole making, and reducing the residual stress on the blade surface. A neural network model was established to determine the best process parameters, and the blade was ground under the best process parameters. Using JB - 8 e contact pin type surface roughness measuring instrument, the depth of field microscope and X 'Pert Powder respectively on blade surface residual stress test analysis system, the blade film hole roughness and orifice morphology and blade surface residual stress were analyzed. The blade surface roughness decreased from 3.08 μm to 0.19 μm, the edge burrs of the blade film holes were basically removed, and there were signs of inverted circle. After grinding, the blade lattice became more compact, and the residual tensile stress changed from 324.7 MPa to 132.8 MPa. The application of magnetic grinding can effectively reduce the surface roughness of the blade, remove the edge burr of the blade film hole. The edge of the blade film hole can be processed in an inverted circle, and the surface quality of the femtosecond laser blade film hole can be improved. At the same time, the residual tensile stress of the blade can be converted into residual compressive stress, making the lattice arrangement of the blade closer. It can improve the strength and wear resistance of blade without introducing new defects and increase the service life of blade.
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