Hardfacing of mild steel with wear-resistant Ni-based powders containing WC particles using PPTAW technology

• Autorzy: Appiah Augustine , Bialas Oktawian , Jędrzejczyk Marcelina , Ciemała Natalia , Wantuch Łucja , Żuk Marcin , Czupryński Artur , Adamiak Marcin

Identyfikatory

DOI

10.26628/simp.wtr.v94.1147.p3-18

• Języki publikacji: EN

Abstrakty

EN

This study explores the use of powder plasma transferred arc welding (PPTAW) as a surface layers deposition technology to form hardfaced coatings to improve upon the wear resistance of mild steel. Hardfaced layers/coatings were prepared using the PPTAW process with two different wear-resistant powders: PG 6503 (NiSiB+60% WC) and PE 8214 (NiCrSiB+45% WC). By varying the PPTAW process parameters of plasma gas flow rate (PGFR) and plasma arc current, hardfaced layers were prepared. Microscopic examinations were carried out to investigate the microstructure and surface characteristics of the prepared hardfaced layers. Penetration tests were performed to ascertain the number and depth of crack sites in the prepared samples by visual inspection. The hardness of the hardfaced layers were determined: hardfacings prepared with PG 6503 had hardness of 46.3 - 48.3 HRC, those prepared with PE 8214 had hardness of 52.7 - 58.3 HRC. The microhardness of the matrix material was in the range of 573.3 - 893.0 HV, and the carbides had microhardness in the range of 2128.7 - 2436.3 HV. Abrasive wear resistance tests were carried out on each prepared sample to determine their relative abrasive wear resistance relative to the reference material, abrasion resistant heat-treated steel, Hardox 400, having a nominal hardness of approximately 400 HV. Findings from the research showed that the wear resistance of the mild steel was improved after deposition of hardfaced layers; the hardness and wear resistance were increased upon addition of Cr as an alloying element; increasing the PGFR increased the hardness and wear resistance of the hardfacings, as well as increase in the number of cracks; increasing the PTA current resulted in hardfacings with less cracks, but relatively lowered the wear resistance. The wear mechanisms were discussed.

Słowa kluczowe

EN

powder welding; plasma transferred arc welding; abrasive wear; plasma cladding; hardfacing

PL

spawanie łukiem plazmowym; spawanie proszkowe; zużycie ścierne; napawanie utwardzające; utwardzanie plazmowe

• Wydawca: Stowarzyszenie Inżynierów i Techników Mechaników Polskich
• Czasopismo: Welding Technology Review
• Rocznik: 2022
• Tom: R. 94
• Strony: 3--18
• Opis fizyczny: Bibliogr. 29 poz., il., tab.

Twórcy

autor

Appiah Augustine

• Laboratory of Materials Research, Faculty of Mechanical Engineering, Silesian University of Technology, Gliwice, Poland

• https://orcid.org/0000-0003-2799-6998

autor

Bialas Oktawian

• Laboratory of Materials Research, Faculty of Mechanical Engineering, Silesian University of Technology, Gliwice, Poland

• https://orcid.org/0000-0003-4874-9160

autor

Jędrzejczyk Marcelina

• Student of the Faculty of Mechanical Engineering, Silesian University of Technology, Gliwice, Poland

autor

Ciemała Natalia

• Student of the Faculty of Mechanical Engineering, Silesian University of Technology, Gliwice, Poland

autor

Wantuch Łucja

• Student of the Faculty of Mechanical Engineering, Silesian University of Technology, Gliwice, Poland

autor

Żuk Marcin

• Department of Welding Engineering, Faculty of Mechanical Engineering, Silesian University of Technology, Gliwice, Poland

• https://orcid.org/0000-0002-4649-9260

autor

Czupryński Artur

• Department of Welding Engineering, Faculty of Mechanical Engineering, Silesian University of Technology, Gliwice, Poland

• https://orcid.org/0000-0001-9337-8325

autor

Adamiak Marcin

• Laboratory of Materials Research, Faculty of Mechanical Engineering, Silesian University of Technology, Gliwice, Poland

• https://orcid.org/0000-0001-8851-2091

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