PROLONGING LIFETIME OF MILLING TOOLS BY LASER CLADDING OF WEAR RESISTANT COATINGS

1 VOSTŘÁK Marek
Co-authors:
1 HOUDKOVÁ Šárka 2 ZETEK Miroslav 1 HRUŠKA Matěj
Institutions:
1 The University of West Bohemia, New Technology Research Centre, Univerzitní 8, 306 14 Plzeň, CZ, mvostrak@ntc.zcu.cz
2 The University of West Bohemia, Faculty of Mechanical Engeneering, Department of Machining Technology, Univerzitní 8, 306 14 Plzeň, CZ, mzetek@kto.zcu.cz
Conference:
27th International Conference on Metallurgy and Materials, Hotel Voronez I, Brno, Czech Republic, EU, May 23rd - 25th 2018
Proceedings:
Proceedings 27th International Conference on Metallurgy and Materials
Pages:
1051-1055
ISBN:
978-80-87294-84-0
ISSN:
2694-9296
Published:
24th October 2018
Proceedings of the conference were published in Web of Science and Scopus.
Metrics:
22 views / 6 downloads
Abstract

The tools used for milling and grinding can have a limited lifetime due to excessive wear. Their lifetime can be prolonged by application of suitable coatings. Highly wear resistant coatings can be easily applied by means of laser cladding. The goal of this study is to effectively prolong the lifetime of milling screw used in sawdust processing. The coating consisting of tungsten carbide spherical particles in NiCrBSi matrix excels with high hardness and excellent wear resistance. This coating is laser cladded to the areas of the tool, which degrade first due to rapid wear rate. The cladded milling screw is then tested in production. The treated part exhibit with significantly less wear rate than the untreated part of the tool. The lifetime of the whole milling screw is prolonged, however additional optimization of areas treated by cladding can bring further improvement.

Keywords: Laser cladding, wear resistance, tungsten carbide
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