Experimental investigations of machining characteristics of laser-induced thermal cracking in alumina ceramic wet grinding
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In order to enhance the grinding precision of alumina ceramic, this paper presents the results of an experimental study of a two-step laser-assisted wet grinding process including laser-induced thermal cracking and wet grinding. In particular, the differences in grinding force, grinding force ratio, and surface finish obtained under laser-assisted wet grinding (LAWG) and conventional grinding (CG) conditions are compared and discussed. It is found that the normal and tangential grinding forces for LAWG condition are lower than for CG condition. The higher material removal rates on LAWG condition can be achieved. The average grinding force ratios for CG condition are lower than for LAWG condition. The surface roughness values are considerable in both conditions, and the improvement for surface roughness is not obvious. This is attributed to the final grinding pass through the unaffected parent material.
KeywordsLaser-induced thermal cracking Alumina ceramic Wet grinding Grinding force Grinding force ratio Surface roughness
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- 7.Shen XW, Lei ST (2012) Experimental study on operating temperature in laser-assisted milling of silicon nitride ceramics. Int J Adv Manuf Technol 52(1–4):143–154Google Scholar
- 8.Chang W, Luo X, Zhao Q, Sun J, Zhao Y (2012) Laser assisted micro grinding of high strength materials. Key Eng Mater 496(1):44–99Google Scholar
- 10.Kumar M, Melkote S, Lahoti G (2010) Laser-assisted microgrinding of ceramics. CIRP Ann Manuf Technol 60(1):361–370Google Scholar
- 11.Yan B, Lu W, Tang R, Yang L, Yin JL (2004) Phase transformation of A12O3 ceramic coating and laser plasma spraying and laser remelting. J Chin Ceram Soc 32(7):785–788Google Scholar