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Influence of Surface Features for Increased Heat Dissipation on Tool Wear
University West, Department of Engineering Science, Division of Subtractive and Additive Manufacturing.ORCID iD: 0000-0002-0895-3303
University West, Department of Engineering Science, Division of Subtractive and Additive Manufacturing.
Chalmers University of Technology, Department of Industrial and Materials Science, SE-412 96 Gothenburg, Sweden.
Chalmers University of Technology, Department of Industrial and Materials Science, SE-412 96 Gothenburg, Sweden.
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2018 (English)In: Materials, ISSN 1996-1944, E-ISSN 1996-1944, Vol. 11, no 5, article id E664Article in journal (Refereed) Published
Abstract [en]

The critical problems faced during the machining process of heat resistant superalloys, (HRSA), is the concentration of heat in the cutting zone and the difficulty in dissipating it. The concentrated heat in the cutting zone has a negative influence on the tool life and surface quality of the machined surface, which in turn, contributes to higher manufacturing costs. This paper investigates improved heat dissipation from the cutting zone on the tool wear through surface features on the cutting tools. Firstly, the objective was to increase the available surface area in high temperature regions of the cutting tool. Secondly, multiple surface features were fabricated for the purpose of acting as channels in the rake face to create better access for the coolant to the proximity of the cutting edge. The purpose was thereby to improve the cooling of the cutting edge itself, which exhibits the highest temperature during machining. These modified inserts were experimentally investigated in face turning of Alloy 718 with high-pressure coolant. Overall results exhibited that surface featured inserts decreased flank wear, abrasion of the flank face, cutting edge deterioration and crater wear probably due to better heat dissipation from the cutting zone.

Place, publisher, year, edition, pages
2018. Vol. 11, no 5, article id E664
Keywords [en]
Alloy 718, carbide insert, high-pressure coolant, machining, textured inserts, tool-chip contact area
National Category
Manufacturing, Surface and Joining Technology
Research subject
ENGINEERING, Manufacturing and materials engineering
Identifiers
URN: urn:nbn:se:hv:diva-12274DOI: 10.3390/ma11050664PubMedID: 29693579Scopus ID: 2-s2.0-85046275282OAI: oai:DiVA.org:hv-12274DiVA, id: diva2:1202779
Available from: 2018-04-30 Created: 2018-04-30 Last updated: 2018-05-14Bibliographically approved

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Tamil Alagan, NageswaranBeno, Tomas

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