CHARACTERISTICS OF THE MECHANICAL AND PHYSICAL PROPERTIES OF METAL POWDERS USED FOR HIGH SPEED SPRAYING OF MACHINE PARTS

1 ŽUROVEC David
Co-authors:
1 HLOSTA Jakub 1 NEČAS Jan 1 ZEGZULKA Jiří 1 JEZERSKÁ Lucie 2 NOVÁK Michal
Institutions:
1 VSB-Technical University of Ostrava, ENET Centre, Bulk Solid Centre, 17. Listopadu 15, 708 33 Ostrava, Czech Republic, EU
2 SERVIS ARMATUR spol. s r. o, Zahradní 808, 739 21 Paskov, Czech Republic, EU
Conference:
26th International Conference on Metallurgy and Materials, Hotel Voronez I, Brno, Czech Republic, EU, May 24th - 26th 2017
Proceedings:
Proceedings 26th International Conference on Metallurgy and Materials
Pages:
1964-1970
ISBN:
978-80-87294-79-6
ISSN:
2694-9296
Published:
9th January 2018
Proceedings of the conference were published in Web of Science and Scopus.
Metrics:
35 views / 7 downloads
Abstract

In the field of powder metallurgy, the characteristics of metal powders are necessary for designing technological processes within transport, handling and storage. This paper is focused on the study of three metal powders, CrCNiCr, NiCrBSi, WCCoCr, which are used for the HVOF (High Velocity Oxy-Fuel) technology of high-speed thermal spraying. This technology is used by the company SERVIS ARMATUR in their own production programme. The company SERVIS ARMATUR cooperates with the Bulk Solid Centre, VSB-Technical University of Ostrava, in the field of metal powders characterization. Each of the three samples was subjected to detailed analysis. The analysis included a measurement of mechanical and physical properties such as particle shape, particle size distribution, the angle of internal friction, compressibility and aeration. Some recommendations for production were determined based on the results of physical-mechanical tests. Improvement was achieved primarily in storage, handling and dosage to the diffuser.

Keywords: metal powders, powder metallurgy, mechanical and physical properties.
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