A Possibility to Improve Resistance of Cast-iron Wood Chip Fine Grinder Liners to Abrasive Wear

• Autorzy: Orłowicz A. W. , Mróz M. , Tupaj M. , Kupiec B. , Jacek M. , Radoń M.

Identyfikatory

DOI

10.24425/123629

• Języki publikacji: EN

Abstrakty

EN

The paper deals with the issue of potential for improvement of resistance of wood chip fine grinders to abrasive wear by providing them with WCCoCr coating applied with the use of atmospheric plasma spraying (APS). The study focused on establishing parameters of the technological process of spraying a 250–270 μm thick coating onto surface of ductile cast iron castings used to date as grinder linings. The presented data include results of microstructure examination, chemical composition analysis, HV hardness measurements, and scratch tests for both previous and new variant of linings. The obtained scratch test results indicate that the material of the coating is characterized with definitely lower susceptibility to scratching. The scratch made on coating was 75–84 μm wide and 7.2–8.2 μm deep, while the scratch on cast iron was distinctly wider (200–220 μm) and deeper (8.5–12.8 μm). In case of cast iron, the range of variability in scratch width and depth was definitely larger. This can be explained with large difference in hardness of individual components of microstructure of cast iron and significantly larger plastic deformation of cast iron compared to the coating revealed in the course of indenter motion over surfaces of the two materials. It has been found that application of WCCoCr coating offered better resistance of lining surfaces to scratching which can be considered a rationale for undertaking in-service tests.

Słowa kluczowe

EN

ductile cast iron; WCCoCr coating; scratch test

PL

żeliwo sferoidalne; powłoka WCCoCr; pomiar zarysowania

• Wydawca: Komisja Odlewnictwa Polskiej Akademii Nauk Oddział w Katowicach
• Czasopismo: Archives of Foundry Engineering
• Rocznik: 2018
• Tom: Vol. 18, iss. 4
• Strony: 35--38
• Opis fizyczny: Bibliogr. 5 poz., rys., tab., wykr.

Twórcy

autor

Orłowicz A. W.

• Rzeszow University of Technology, al. Powstańców Warszawy 12, 35-959 Rzeszów, Poland

autor

Mróz M.

• Rzeszow University of Technology, al. Powstańców Warszawy 12, 35-959 Rzeszów, Poland

autor

Tupaj M.

• Rzeszow University of Technology, al. Powstańców Warszawy 12, 35-959 Rzeszów, Poland

autor

Kupiec B.

• Rzeszow University of Technology, al. Powstańców Warszawy 12, 35-959 Rzeszów, Poland

autor

Jacek M.

• Rzeszow University of Technology, al. Powstańców Warszawy 12, 35-959 Rzeszów, Poland

autor

Radoń M.

• Rzeszow University of Technology, al. Powstańców Warszawy 12, 35-959 Rzeszów, Poland

Bibliografia

• [1] Orłowicz, W., Trytek, A., Malik, J. (2013). Formation of microstructure and service properties of cast iron castings by Surface improvement with electric arc plasma. Rzeszow: Publishing House, Rzeszow University of Technology.
• [2] Fernades, F., Cavaliero, A. Loureiro, A. (2012). Oxidation behavior of Ni-based coatings deposited by PTA on gray cast iron. Surface and Coatings Technology. 207, 196-203.
• [3] Male Ghaini, F., Ebrahimnia, M. Gholizade, Sh. (2011). Characteristics of crack in heat affected zone of ductile cast iron in powder welding process. Engineering Failure Analysis. 18, 47-51.
• [4] Książek, M., Boron, L., Radecka, M., Richert, M. Tchórz, A. (2016). The structure and bond strength of composite carbide coatings (WC-Co+Ni) deposited on ductile cast iron by thermal spraying. Journal of Materials Engineering and Performance. 25(2), 502-509. DOI: 10.1007/s11665-015-1871-9.
• [5] Ebrahimnia, M., Malek Ghaini, F., Gholizade, Sh. Salari, M. (2012). Effect of cooling rate and powder characteristic on the soundness of heat affected zone in powder Welding of ductile cast iron. Materials and Design. 33, 551-556. DOI: 10.1016/j.matdes.2011.04.063.

Uwagi

PL

Opracowanie rekordu w ramach umowy 509/P-DUN/2018 ze środków MNiSW przeznaczonych na działalność upowszechniającą naukę (2018).