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Content available Influence of Shot Peening on the Wear Behaviour of Medium Carbon Steel
Vicen Martin, Bokůvka Otakar, Trško Libor, Drbul Mário, Nikolić Ružica, Nový František
Production Engineering Archives
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2022
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Vol. 28, Iss. 3
241--245
EN
Influence of shot peening on the wear behaviour of medium carbon, C55 steel was experimentally verified. Experimental work included determination of the chemical composition, heat treatment, microstructure evaluation, mechanical properties measurement, shot peening treatment, the magnitude of the compressive residual stresses was evaluated, roughness profiles measurement and finally the friction tests. The results evidence the significant role played by the applied shot peening on wear behaviour of medium carbon steel. An important effect of surface roughness has been demonstrated. The coefficient of friction after shot peening compared to ground surface increased, 1.44 – 1.85 times.
2
Content available Tribological behavior of low-alloyed steel after nitriding
Vicen Martin, Bokůvka Otakar, Nikolić Ružica, Bronček Jozef
Production Engineering Archives
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2020
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Vol. 26, Iss. 3
78--83
EN
The tribological properties of the nitride layer applied to the low-alloyed steel were investigated in this research. Experimental work included determination if the chemical composition, wear resistance, Rockwell, Vickers and nano-indentation tests, both of the substrate material – the low-alloyed steel and the deposited nitride layer. From the results obtained in those experiments authors concluded that applying the nitride layer does not significantly improve the tribological properties of the tested lowalloyed steel samples, thus this process is not recommended for achieving that purpose.
3
Content available Investigation of tribological properties of CarbonX coating deposited on 100Cr6 steel
Vicen Martin, Bronček Jozef, Nový František
Production Engineering Archives
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2019
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Vol. 25
52--55
EN
The article deals with a reduction of friction coefficient of bearing steel 100Cr6. Reduction of friction was achieved by means of a CarbonX DLC coating. The coating exhibited excellent friction and mechanical properties. This coating was applied to samples made of 100Cr6 bearing steel. The friction results of the CarbonX coating were compared to the friction results of the 100Cr6 bearing steel. Reducing the friction of 100Cr6 bearing steel resulted in reduced wear and increase lifetime. The friction process of the samples will take place in an environment without lubrication. The aim of the article is to verify the behaviour of the DLC coating without the presence of lubricant in the friction node. The achieved results are to be interpreted in the conclusion of article.
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