Analysis of Micro-Milling of Hardened Tool Steel

Sredanović, Branislav; Lakic, Gordana Globocki; Kramar, Davorin; Kopač, Janez

doi:10.4028/www.scientific.net/kem.686.57

Cited by 5 publications

(1 citation statement)

References 14 publications

(18 reference statements)

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“…AISI D2 tool steel belongs to group D for cold working. This material is commonly subjected to quenching and tempering, thus resulting in a microstructure composed of martensite, retained austenite and carbides, which ensures high hardness and wear resistance which is attributed to the presence of chromium carbides in the microstructure of the material [6]. For these reasons, this material is widely used for the production of dies and molds [7,8].…”

Section: Introductionmentioning

confidence: 99%

Tribological Effects of Micromilling of Hardened Aisi D2 Steel on Tool Wear and Top Burr Formation

Oliveira

Medânha²,

Pereira³

et al. 2023

Preprint

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The study of micromilling of quenched and tempered AISI D2 steel is of utmost importance due to the accelerated wear of the micromilling cutting tool edge that intensifies the formation of top burrs, which is detrimental to the micromilled surfaces because requires further surface finishing. In this work, the effect of tooth feed per tooth and depth of cut on machining forces and top burr formation after dry micromilling of slots in quenched and tempered AISI D2 steel was evaluated. The results show that the passive force is approximately 32% higher than the radial and feed forces. Regarding burr formation, axial depth of cut was the most relevant parameter. Doubling depth of cut burr height increased by approximately 400%. Increasing feed per tooth reduces burr formation. The down cutting direction presented top burr heights approximately 23% higher when compared with up cutting. Abrasion and adhesion were the predominant tool wear mechanisms. Tool wear increases progressively with machining length raising the milling force components. which leads to rounding and increase the radius of the cutting edge. Consequently, a negative rake angle is generated, inducing size effect and intensifying the material ploughing mechanism.

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Section: Introductionmentioning

confidence: 99%

Tribological Effects of Micromilling of Hardened Aisi D2 Steel on Tool Wear and Top Burr Formation

Oliveira

Medânha²,

Pereira³

et al. 2023

Preprint

View full text Add to dashboard Cite

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A review on micro-milling: recent advances and future trends

Balázs

Geier

Takács

et al. 2020

Int J Adv Manuf Technol

124

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Recently, mechanical micro-milling is one of the most promising micro-manufacturing processes for productive and accurate complex-feature generation in various materials including metals, ceramics, polymers and composites. The micro-milling technology is widely adapted already in many high-tech industrial sectors; however, its reliability and predictability require further developments. In this paper, micro-milling related recent results and developments are reviewed and discussed including micro-chip removal and micro-burr formation mechanisms, cutting forces, cutting temperature, vibrations, surface roughness, cutting fluids, workpiece materials, process monitoring, micro-tools and coatings, and process-modelling. Finally, possible future trends and research directions are highlighted in the micro-milling and micro-machining areas.

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