The influence of microstructure and non-metallic inclusions on the machinability of clean steels
(English)Manuscript (preprint) (Other academic)
This study focused on the evaluation of the machinability of different carburising steel grades by using a cemented carbide cutting tool during semi finishing of steel. The effect of the steel composition, microstructure and inclusion characteristics on the cutting tool wear in the soft part turning was evaluated for a reference steel R (0.028% S, 0.0009% O), a clean C steel (0.003% S, 0.0005% O), and an UC ultra clean steel (0.002% S, 0.0004% O). An improved cutting tool life of about 10-25% was obtained when machining the reference steel R. The favorable machining performance of this steel was attributed to its higher content of non-metallic inclusions, larger grain size and lower micro hardness than that of the clean steels.
carburising steel, grain size, non-metallic inclusions, machinability
Metallurgy and Metallic Materials
Research subject Materials Science and Engineering
IdentifiersURN: urn:nbn:se:kth:diva-187154DOI: 10.1002/srin.201600111OAI: oai:DiVA.org:kth-187154DiVA: diva2:929025
QC 201605182016-05-172016-05-172016-05-18Bibliographically approved