Methods of improvement in hardness of composite surface layer on cast steel

• Autorzy: Szajnar J. , Wróbel P. , Wróbel T.
• Języki publikacji: EN

Abstrakty

EN

The paper presents a method of usable properties of surface layers improvement of cast carbon steel 200–450, by put directly in founding process a composite surface layer on the basis of Fe-Cr-C alloy and next its remelting with use of welding technology TIG – Tungsten Inert Gas. Technology of composite surface layer guarantee mainly increase in hardness and abrasive wear resistance of cast steel castings on machine elements. This technology can be competition for generally applied welding technology (surfacing by welding and thermal spraying). However the results of studies show, that is possible to connection of both methods founding and welding of surface hardening of cast steel castings. In range of experimental plan was made test castings with composite surface layer, which next were remelted with energy 0,8 and 1,6 kJ/cm. Usability for industrial applications of test castings was estimated by criterion of hardness and abrasive wear resistance of type metal-mineral.

Słowa kluczowe

EN

cast steel; composite surface layer; hardness; Tungsten Inert Gas; TIG

PL

staliwo; warstwa powierzchniowa kompozytowa; twardość

• Wydawca: Komisja Odlewnictwa Polskiej Akademii Nauk Oddział w Katowicach
• Czasopismo: Archives of Foundry Engineering
• Rocznik: 2008
• Tom: Vol. 8, iss. 3s
• Strony: 111--116
• Opis fizyczny: Bibliogr. 10 poz., rys., tab., wykr.

Twórcy

autor

Szajnar J.

• Silesian University of Technology, Foundry Division, Towarowa 7, 44-100 Gliwice, PL

autor

Wróbel P.

• Silesian University of Technology, Foundry Division, Towarowa 7, 44-100 Gliwice, PL

autor

Wróbel T.

• Silesian University of Technology, Foundry Division, Towarowa 7, 44-100 Gliwice, PL

Bibliografia

• [1] J. Gawroński, J. Szajnar, P. Wróbel, Surface composite layers cast iron – ceramics particles, Archives of Foundry, vol. 5, No. 17 (2005) (in Polish).
• [2] J. Gawroński, J. Szajnar, P. Wróbel, Technology of surface composite layers on castings, Archives of Foundry, vol. 6, No. 19 (2006) (in Polish).
• [3] J. Szajnar, P. Wróbel, T. Wróbel: Model castings with composite surface layer - application, Archives of Foundry Engineering, vol. 8, No. 3 (2008).
• [4] A. Klimpel: Surfacing by welding and thermal spraying – technology WNT, Warszawa (2000), (in Polish).
• [5] J. Pilarczyk, J. Pilarczyk: Welding of metals, Silesian Publishers, Katowice (1996), (in Polish).
• [6] W. Orłowicz, A. Trytek: Shaping of microstructure and service properties of cast iron castings by surface refinement with electric arc plasma, Archives of Foundry, vol. 7, No. 23 – Monograph (2007).
• [7] W. Lucas: Arc surfacing and cladding processes, Weldnig & Metal Fabrication, No. 2 (1994).
• [8] J. Szajnar, M. Stawarz, P. Wróbel, T. Wróbel: Properties shaping and repair of selected types of cast iron, Archives of Foundry Engineering, vol. 7, No. 2 (2007).
• [9] Standard ASTM G 65 – 00.
• [10] K. Sękowski, J. Piaskowski, Z. Wojtowicz: Atlas of structures of founding alloys, WNT, Warszawa (1972).