Advanced finishing strategies for hardened tool steels
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68407700%3A21220%2F25%3A00387975" target="_blank" >RIV/68407700:21220/25:00387975 - isvavai.cz</a>
Result on the web
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DOI - Digital Object Identifier
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Alternative languages
Result language
angličtina
Original language name
Advanced finishing strategies for hardened tool steels
Original language description
High demands for precision and mirror-like surfaces in mold manufacturing have led to the development of advanced finishing strategies for hardened tool steels. This paper investigates the potential of precision milling using cubic boron nitride (CBN) and polycrystalline diamond (PCD) tools for achieving ultra-smooth surfaces while minimizing manual polishing. A comprehensive experimental study was conducted on maraging steel Böhler W720 VMR (54 HRC), evaluating the influence of feed rate and depth of cut on surface roughness. While CBN tools enabled the attainment of Ra values below 30 nm, mirror finishes required additional finishing processes. Various supplemental technologies including manual, orbital, electrochemical, and CNC-based PCD polishing were compared in terms of surface quality and process efficiency. The most cost-effective approach was found to be CBN milling under productive conditions followed by manual or orbital polishing, yielding sub-5 nm roughness on planar surfaces. PCD polishing proved effective in reducing longitudinal roughness but did not consistently achieve a reflective surface due to machine kinematic limitations. The findings provide practical guidelines for selecting and combining finishing strategies to optimize both surface quality and production cost in hardened tool steel applications.
Czech name
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Czech description
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Classification
Type
D - Article in proceedings
CEP classification
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OECD FORD branch
20301 - Mechanical engineering
Result continuities
Project
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Continuities
S - Specificky vyzkum na vysokych skolach
Others
Publication year
2025
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Article name in the collection
Technological Forum2025
ISBN
978-80-87583-57-9
ISSN
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e-ISSN
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Number of pages
8
Pages from-to
110-117
Publisher name
Ing. Jan Kudláček
Place of publication
Jaroměř
Event location
Herbertov
Event date
Jun 24, 2025
Type of event by nationality
WRD - Celosvětová akce
UT code for WoS article
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