The effect of cast steel chemical composition on its microstructure and tribological properties in mill rolls

• Autorzy: Krawczyk J.
• Języki publikacji: EN

Abstrakty

EN

Purpose: The influence of the chemical composition on a microstructure and tribological properties (wear and friction coefficient) of cast steels used for the mill rolls is presented in the paper. The role of the chemical composition in a tendency of the graphite formation was determined. Design/methodology/approach: Samples for investigations were taken from seven mill rolls originated from various producers. Cast steels, from which rolls were produced, were of various chemical compositions. Tribological tests were performed at a load of 100 N. Bearing steel 100Cr6, of a hardness of 57HRC, was applied as a counter sample. Findings: The role of individual alloying elements in a tendency of the graphite formation was estimated. The influence of the chemical composition on the hardness, wear resistance and friction coefficient of cast steels used for the mill rolls was estimated. The relationship between a hardness and wear resistance was presented. Research limitations/implications: The relationship between the hardness resulting from the chemical composition and the wear resistance of the investigated steels was presented. This supplements the knowledge concerning the role of the chemical composition in the formation of tribological properties of cast alloys on iron matrix. Practical implications: The obtained results can be utilised in designing the chemical compositions of the cast steel mill rolls. Originality/value: For the first time the complex assessment of the chemical composition influence on the tribological properties of high-carbon steels of a variable microstructure was successfully achieved.

Słowa kluczowe

EN

tool materials; cast steel; tribological properties; chemical composition

• Wydawca: International OCSCO World Press
• Czasopismo: Journal of Achievements in Materials and Manufacturing Engineering
• Rocznik: 2011
• Tom: Vol. 47, nr 2
• Strony: 137--148
• Opis fizyczny: Bibliogr. 19 poz., rys., tab.

Twórcy

autor

Krawczyk J.

• Faculty of Metals Engineering and Industrial Computer Science, AGH University of Science and Technology, Al. Mickiewicza 30, 30-059 Kraków, Poland

Bibliografia

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