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Influence of batch-to-batch material variations on grindability of a medium‑carbon steel
Chalmers University of Technology, Sweden.
Furtwangen University of Applied Sciences, Germany.
Schlumpf Scandinavia AB, Sweden.
Chalmers University of Technology, Sweden.
Vise andre og tillknytning
2022 (engelsk)Inngår i: Journal of Manufacturing Processes, ISSN 1526-6125, Vol. 73, s. 463-470Artikkel i tidsskrift (Fagfellevurdert) Published
Abstract [en]

This study addresses the influence of material variations on the grindability of crankshaft steel. Most previous studies on the effect of material microstructure on grindability involve comparisons of significantly different steel grades. This study, in contrast, is focused on batch-to-batch grindability variations for one steel grade, a scenario frequently occurring in industry where batches from different steel makers are fed into a production line. For this purpose, a batch made of recycled steel and a batch made of ore-based steel were compared with regards to microstructure and grindability under identical grinding and dressing conditions. Although both batches met the same material specifications, microstructural variations were identified in terms of grain size and micro-constituents (inclusions, carbonitrides). While specific grinding energy, residual stress and full-width at half-maximum profiles of ground surfaces were the same for both batches, the recycled batch showed different and unfavorable variation in wheel wear and Barkhausen noise (BN) response. Larger fractions of oxide inclusions and larger grain sizes (affected by carbonitrides) were present in the recycled batch, which were the likely reasons for the differences in wheel wear and BN response, respectively. These findings may aid grindability improvement by steel-grade adjustments, e.g. modification of the distribution and type of inclusions and/or amount of elements forming carbonitrides. Furthermore, the results highlight the importance of understanding and controlling material microstructure, as existing in-line quality by BN control may not always be able to correctly indicate surface integrity, which could lead to misinterpretations (e.g. false part-rejection on the assumption of grinding burn). © 2021 The Authors

sted, utgiver, år, opplag, sider
Elsevier Ltd , 2022. Vol. 73, s. 463-470
Emneord [en]
Grindability, Grinding, Surface integrity, Carbon nitride, Crankshafts, Microstructure, Quality control, Recycling, Wear of materials, Wheels, Barkhausen noise, Effects of materials, Grindabilities, In-wheel, Material microstructures, Material variation, Medium-carbon steels, Steel grades, Wheel wears, Grinding (machining)
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Identifikatorer
URN: urn:nbn:se:ri:diva-57330DOI: 10.1016/j.jmapro.2021.11.012Scopus ID: 2-s2.0-85119434755OAI: oai:DiVA.org:ri-57330DiVA, id: diva2:1623125
Merknad

Funding details: 2017-02908; Funding text 1: The authors thank Robert Bösinger for dedicated experimental work and Nastja Mačerol and Fredrik de Geer for valuable discussions. Members of the International Grinding Centre (IGC) belonging to Chalmers Centre for Metal Cutting Research (MCR) are acknowledged. This work has been performed with the financial support from Sweden's Innovation Agency (CRANK-STEEL project; grant no. 2017-02908 ).

Tilgjengelig fra: 2021-12-28 Laget: 2021-12-28 Sist oppdatert: 2023-05-08bibliografisk kontrollert

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