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Research on surface integrity of grinding Inconel718

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Abstract

Inconel718 is widely used in the aerospace industry; the finished surface quality has significant effect on service performance of component. The surface integrity in grinding Inconel718 respectively by using a vitrified bond single alumina (SA) wheel and a resin cubic boron nitride (CBN) wheel were investigated. First, effects of different grinding parameters on grinding temperature and grinding force and grinding chips feature by using a SA and a CBN wheel respectively were investigated. Then, the surface roughness and topography by using a SA and a CBN wheel through single factor experiment were compared, and in the grinding parameters range of the present study, the better surface can be obtained by a SA wheel. Finally, surface integrity by using a SA wheel and the different grinding depth was studied and analyzed by the grinding temperature and the grinding force. It was possible to conclude that better surface can be achieved by using a SA, and taking a p = 0.005 mm, v w = 16 m/min, v s = 25 m/s for grinding Inconel718. In this grinding case, the surface roughness was Ra0.112 μm, the surface residual stress was +700Mpa, and the surface hardness was 440 HV; the depth of residual stress layer was 40∼60 μm, the depth of softened layer was 30∼40 μm and the depth of plastic deformation layer was 10∼15 μm.

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Authors and Affiliations

  1. The Key Laboratory of Contemporary Design and Integrated Manufacturing Technology, Ministry of Education, Northwestern Polytechnical University, Box 552, Xi’an, Shaanxi, 710072, People’s Republic of China

    C. F. Yao, Q. C. Jin, X. C. Huang, D. X. Wu, J. X. Ren & D. H. Zhang

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  1. C. F. Yao
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  2. Q. C. Jin
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  3. X. C. Huang
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  4. D. X. Wu
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  6. D. H. Zhang
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Correspondence to C. F. Yao.

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Yao, C.F., Jin, Q.C., Huang, X.C. et al. Research on surface integrity of grinding Inconel718. Int J Adv Manuf Technol 65, 1019–1030 (2013). https://doi.org/10.1007/s00170-012-4236-7

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  • DOI: https://doi.org/10.1007/s00170-012-4236-7

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