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Measuring strategies for smooth tool steel surfaces
Högskolan i Halmstad, Sektionen för ekonomi och teknik (SET), Maskinteknisk produktframtagning (MTEK).ORCID-id: 0000-0002-9084-819X
Högskolan i Halmstad, Sektionen för ekonomi och teknik (SET), Maskinteknisk produktframtagning (MTEK), Funktionella ytor.ORCID-id: 0000-0001-8058-1252
2008 (engelsk)Inngår i: Proceedings: January 28th and 29th, 2008, Germany, Chemnitz = XII. Internationales Oberflächenkolloquium, Aachen: Shaker Verlag, 2008, s. 110-119Konferansepaper, Publicerat paper (Annet vitenskapelig)
Abstract [en]

Comparisons between different measuring strategies were made on three types of smooth tool steel surfaces. Three replica materials were tested to study possibilities within replication techniques. An optical interferometer as well as a mechanical stylus was used to evaluate the surfaces. The results showed that the tested replica materials generated good representations of both the form and the surface roughness (Sq > 300 nm). The evaluated surfaces were quite homogeneous, thus, few measurements are needed to get representative results. However, it was found that caution must be taken regarding manually polished surfaces which can be less homogenous and therefore require more measurements to get representative results.

sted, utgiver, år, opplag, sider
Aachen: Shaker Verlag, 2008. s. 110-119
Emneord [en]
replicas, surface characterisation, measuring strategies
HSV kategori
Identifikatorer
URN: urn:nbn:se:hh:diva-2189Lokal ID: 2082/2586ISBN: 978-3-8322-6912-8 ISBN: 3-8322-6912-6 OAI: oai:DiVA.org:hh-2189DiVA, id: diva2:239407
Konferanse
XII. Internationales Oberflächenkolloquium, 28-29 January, 2008, Germany, Chemnitz
Tilgjengelig fra: 2008-12-09 Laget: 2008-12-09 Sist oppdatert: 2014-03-05bibliografisk kontrollert
Inngår i avhandling
1. Polishability of tool steels: Characterisation of high gloss polished tool steels
Åpne denne publikasjonen i ny fane eller vindu >>Polishability of tool steels: Characterisation of high gloss polished tool steels
2009 (engelsk)Licentiatavhandling, med artikler (Annet vitenskapelig)
Abstract [en]

The manufacturing of plastic components, like a majority of other mass produced discrete parts, require well designed dies and moulds. Complex geometries and increasing demands on final surface appearance, which is strongly connected to the quality impression, are pushing for high demands on mould-makers and polishers as well as steel producers. Moulds for production of shiny plastic components require tool steels with low defect levels to achieve highly gloss and very smooth mould surfaces (roughness levels in the nm-range).

It is the ability to achieve those mirror-like surfaces, the polishability of tool steels, that is the central part in this study. To increase the understanding of how material properties and different surface preparation techniques impact the polishability, a selection of high gloss polished tool steel qualities were characterised using non-contact 3D-surface texture analysis.

A first step towards a grading system of the polishablility was made based on a classification of surface defects detected on included steel samples. 3D surface parameters based on interferometer measurements seemed to be useful for a characterisation, even though further studies (involving different filters and segmentation methods) are needed to find less and more precise parameter values to grade tool steel qualities.

Future work will include analysis of surface measurements of test moulds and plastic parts, as well as studies of how quantitative parameters can be linked to qualitative estimations in order to better understand how surface features on the mould are transferred into the surface of plastic components.

sted, utgiver, år, opplag, sider
Göteborg: Chalmers University of Technology, 2009. s. 50
Serie
[Technical report] / Department of Materials and Manufacturing Technology, Chalmers University of Technology, ISSN 1652-8891 ; 45
Emneord
tool steels, surface characterisation, polishability, 3D parameters, high gloss polishing
HSV kategori
Identifikatorer
urn:nbn:se:hh:diva-6179 (URN)
Presentation
2009-03-04, Seminar room Delta-Gamma, Hörsalsvägen 7, Chalmers University of Technology, Gothenburg, 13:15 (engelsk)
Opponent
Tilgjengelig fra: 2010-11-09 Laget: 2010-10-20 Sist oppdatert: 2013-11-19bibliografisk kontrollert

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