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Textured tool with cryogenic cooling-assisted turning of aluminium metal matrix composites
University West, Department of Engineering Science, Division of Subtractive and Additive Manufacturing.
2021 (English)Independent thesis Advanced level (degree of Master (One Year)), 10 credits / 15 HE creditsStudent thesis
Abstract [en]

In recent years, demand for aluminium metal matrix composites has increased in the automotive and aerospace industries due to their mechanical properties and applications. Several articles have shown that textured cutting tools can improve the tribological properties at the tool-chip interface and reduce friction, temperature, cutting forces, chip size, and tool wear. Biomimetic textures from nature can improve the performance of cutting tools by their multi-functionalities. However, scant research has been reported in machining Al-MMCs with a combination of biomimetic textured cutting inserts and liquid nitrogen coolant (LN2). In this research work, nine different texture designs on the rake face are investigated in combination with liquid nitrogen coolant in the machining of Al-MMCs (Difficult-to-Cut material). The influence of texturing on the rake face combined with the LN2 cooling is analysed by evaluating the built-up edge height, flank wear (VBmax), and flank wear area (VBarea), tool-chip contact length (TCClength), and tool-chip contact area (TCCarea). The experiment analysis performed using various tool wear methods showed that the combination of textures and LN2 coolant improved all tool wear conditions but in the dry condition, texture tools have shown no influence on all types of tool wear compared to the plain tool. The texturing on the rake face has influenced the tool-chip contact which led to a decrease in TCClength and TCCarea and therefore reduces the friction during the machining process. SEM analysis was performed on all cutting tools to observe wear mechanisms results in adhesion of workpiece material filling between textures and chipping at the cutting edges in all dry textured tools whereas using cryogenic coolant results in a dramatic reduction in chipping at cutting edges for all textured tools and the filling of adhesion material was observed to be less compared to dry condition.

Place, publisher, year, edition, pages
2021. , p. 24
Keywords [en]
Al-MMC, Facing, Cryogenic cooling, Next generation cutting tools, Textured inserts, and Tool wear
National Category
Tribology (Interacting Surfaces including Friction, Lubrication and Wear)
Identifiers
URN: urn:nbn:se:hv:diva-17708Local ID: EXM903OAI: oai:DiVA.org:hv-17708DiVA, id: diva2:1609397
Subject / course
Mechanical engineering
Educational program
Masterprogram i tillverkningsteknik
Supervisors
Examiners
Available from: 2021-12-06 Created: 2021-11-08 Last updated: 2021-12-06Bibliographically approved

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CiteExportLink to record
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Citation style
  • apa
  • ieee
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  • de-DE
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  • en-US
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