Experimental study on grinding of a nickel-based alloy using vitrified CBN wheels

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DOIResolve DOI: http://doi.org/10.4028/www.scientific.net/AMR.325.134
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Proceedings titleAdvanced Materials Research
Conference14th International Symposium on Advances in Abrasive Technology, ISAAT 2011, 18 September 2011 through 21 September 2011, Stuttgart
Pages134139; # of pages: 6
SubjectCBN grinding; Creep-feed grinding; Engine blades; Experimental studies; Grinding parameters; Grinding power; Grinding temperatures; Material removal rate; Nickel based alloy; Overall costs; Process limits; Rectangular block; Shallow depths; Specific materials; Surface grinding; Vitrified CBN; Water-based fluids; Wheel speed; Abrasives; Alloys; Creep; Grinding wheels; Iron alloys; Jet engines; Nickel; Stripping (removal); Surface roughness; Surfaces; Vehicles; Wheel dressing; Grinding (machining); Abrasives; Alloy; Creep; Engines; Grinding; Jets; Nickel; Roughness; Stripping; Vitrification; Wheels
AbstractAn experimental study is reported on the grinding of a nickel-based alloy using vitrified CBN wheels. This work was motivated by switching the grinding of fir-tree root forms of jet engine blades from creep-feed grinding with conventional abrasive wheels to vitrified CBN wheels. The objective is to explore process limits and practical grinding parameters for judging the switch in terms of overall costs and productivity. Straight surface grinding experiments were conducted with water-based fluid on rectangular blocks at a fixed wheel speed v s = 45 m/s, various depths of cut a = 0.05 - 1.0 mm, and workspeeds v w = 2 - 40 mm/s. Grinding power, forces, surface roughness, and radial wheel wear were measured. Specific material removal rate of 8 mm 3/(mm.s) was reached in rough grinding using a wheel dressed for achieving surface roughness R a = 0.8 μm in finish grinding. It was found that shallow depths of cut combined with fast workspeeds, or less creep-feed modes, are more suitable for achieving high material removal rates with vitrified CBN grinding. Rough grinding is restricted by high grinding temperatures with newly dressed wheels and by chatters with worn wheels. © (2011) Trans Tech Publications, Switzerland.
Publication date
AffiliationNational Research Council Canada (NRC-CNRC); Aerospace (AERO-AERO)
Peer reviewedYes
NPARC number21271540
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Record identifier439cc613-2df3-4913-a000-d6c6e5397dd9
Record created2014-03-24
Record modified2016-05-09
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