Grinding characteristics of a nickel-based alloy using vitrified CBN wheels

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DOIResolve DOI: http://doi.org/10.1504/IJAT.2012.046827
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TypeArticle
Journal titleInternational Journal of Abrasive Technology
ISSN1752-2641
Volume5
Issue1
Pages116; # of pages: 16
SubjectG-ratio; Grinding force; Grinding power; Nickel based alloy; Vitrified CBN; Grinding wheels; Iron alloys; Jet engines; Surface roughness; Vehicles; Wheel dressing; Grinding (machining)
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 ν s = 45 m/s, various depths of cut a = 0.05-1.0 mm, and workspeeds ν w = 2-40 mm/s. Grinding and dressing 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. Copyright © 2012 Inderscience Enterprises Ltd.
Publication date
LanguageEnglish
AffiliationNational Research Council Canada (NRC-CNRC); Aerospace (AERO-AERO)
Peer reviewedYes
NPARC number21269343
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Record identifier783df4bd-3684-458b-9853-2e2d4c11ece2
Record created2013-12-12
Record modified2016-05-09
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