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Experimental study on single grit grinding of Inconel 718

Opoz, TT and Chen, X (2014) Experimental study on single grit grinding of Inconel 718. Proceedings of the Institution of Mechanical Engineers, Part B: Journal of Engineering Manufacture. ISSN 2041-2975

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Abstract

This article presents an important investigation of material removal mechanism in grinding utilizing single grit scratch tests. The investigation helps people to understand the abrasive cutting behaviour when the abrasive cutting edge shape alters during single grit grinding. The results provide fundamental knowledge of the grinding material removal process, which helps to improve grinding performance and quality. Cubic boron nitride grits of 40/50 mesh size were used to perform scratch tests on the alloy Inconel 718. The concepts of material pile-up ratio and actual material removal area were introduced to measure the material removal efficiency during grinding. It is found that pile-up ratio decreases and actual material removal area increases when the depth of cut increases, albeit the material removal mechanism is highly dependent on the abrasive grit cutting edge shape. The material removal mechanism along the scratch length shows different behaviours at the entrance and exit sides of the scratching passes. When a grit was moving along its scratch path, it pushed material forward resulting in high material accumulation at the exit side of the scratches. Consequently, cutting is more prominent at the entrance side of the scratch, whereas ploughing or pile-up is extremely high at the exit side of the scratches. The research finding provides crucial information for grinding process optimization.

Item Type: Article
Uncontrolled Keywords: Single grit grinding, material removal, ploughing, cutting, pile-up ratio
Subjects: T Technology > TA Engineering (General). Civil engineering (General)
T Technology > TJ Mechanical engineering and machinery
Divisions: General Engineering Research Institute
Publisher: SAGE Publications
Date Deposited: 12 Mar 2015 09:39
Last Modified: 02 Apr 2015 14:41
DOI or Identification number: 10.1177/0954405414531114
URI: http://researchonline.ljmu.ac.uk/id/eprint/659

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