Study of the Impact of Coals and Claystones on Wear-Resistant Steels
This paper discusses the impact of coal abrasive materials of varied petrographic composition and claystones containing admixtures of coal matter on the surface wear of wear-resistant martensitic steels. Wear tests were conducted at a test stand for three petrographic varieties of hard coal: vitrini...
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MDPI AG
2023-03-01
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| Online Access: | https://www.mdpi.com/1996-1944/16/6/2136 |
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| author | Andrzej N. Wieczorek Iwona Jonczy Krzysztof Filipowicz Mariusz Kuczaj Arkadiusz Pawlikowski Dariusz Łukowiec Marcin Staszuk Anna Gerle |
| author_facet | Andrzej N. Wieczorek Iwona Jonczy Krzysztof Filipowicz Mariusz Kuczaj Arkadiusz Pawlikowski Dariusz Łukowiec Marcin Staszuk Anna Gerle |
| author_sort | Andrzej N. Wieczorek |
| collection | DOAJ |
| description | This paper discusses the impact of coal abrasive materials of varied petrographic composition and claystones containing admixtures of coal matter on the surface wear of wear-resistant martensitic steels. Wear tests were conducted at a test stand for three petrographic varieties of hard coal: vitrinite, clarinite, and durinite, and five samples of claystone. These tests revealed no significant effect of the type of coal abrasive used on the value of mass loss from the surface of the wear-resistant steel samples. The reason behind the foregoing is the observed tendency of coal abrasives, irrespective of their petrographic variety, to penetrate surface irregularities, especially those attributable to previous surface treatment of the samples and the impact of wear products. The dominant forms of surface damage were surface fatigue chipping and scratches caused by the particles which detached themselves from the surface of the steel samples, as observed for all the analysed coal variants. On the surfaces of the samples seasoned in the presence of claystones, highly varied forms of damage were observed: microcutting, scaly surface cracks, delamination, and deep cracks. In these cases, it was possible that the abrasive grains had been pressed into the steel surface irregularities, but no layered forms of the pressed-in abrasive material were observed to have developed. The paper also presents a model for the formation of coal films and discusses their possible effect on wear minimisation. |
| first_indexed | 2024-03-11T06:16:48Z |
| format | Article |
| id | doaj.art-f245a383cea54513a2cec7ae7e139c55 |
| institution | Directory Open Access Journal |
| issn | 1996-1944 |
| language | English |
| last_indexed | 2024-03-11T06:16:48Z |
| publishDate | 2023-03-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Materials |
| spelling | doaj.art-f245a383cea54513a2cec7ae7e139c552023-11-17T12:18:00ZengMDPI AGMaterials1996-19442023-03-01166213610.3390/ma16062136Study of the Impact of Coals and Claystones on Wear-Resistant SteelsAndrzej N. Wieczorek0Iwona Jonczy1Krzysztof Filipowicz2Mariusz Kuczaj3Arkadiusz Pawlikowski4Dariusz Łukowiec5Marcin Staszuk6Anna Gerle7Faculty of Mining, Safety Engineering and Industrial Automation, Silesian University of Technology, Akademicka 2, 44-100 Gliwice, PolandFaculty of Mining, Safety Engineering and Industrial Automation, Silesian University of Technology, Akademicka 2, 44-100 Gliwice, PolandFaculty of Mining, Safety Engineering and Industrial Automation, Silesian University of Technology, Akademicka 2, 44-100 Gliwice, PolandFaculty of Mining, Safety Engineering and Industrial Automation, Silesian University of Technology, Akademicka 2, 44-100 Gliwice, PolandFaculty of Mining, Safety Engineering and Industrial Automation, Silesian University of Technology, Akademicka 2, 44-100 Gliwice, PolandFaculty of Mechanical Engineering, Silesian University of Technology, Konarskiego 18A, 44-100 Gliwice, PolandFaculty of Mechanical Engineering, Silesian University of Technology, Konarskiego 18A, 44-100 Gliwice, PolandŁukasiewicz Research Network—Institute of Ceramics and Building Materials, Refractory Materials Division in Gliwice, Toszecka 99, 44-100 Gliwice, PolandThis paper discusses the impact of coal abrasive materials of varied petrographic composition and claystones containing admixtures of coal matter on the surface wear of wear-resistant martensitic steels. Wear tests were conducted at a test stand for three petrographic varieties of hard coal: vitrinite, clarinite, and durinite, and five samples of claystone. These tests revealed no significant effect of the type of coal abrasive used on the value of mass loss from the surface of the wear-resistant steel samples. The reason behind the foregoing is the observed tendency of coal abrasives, irrespective of their petrographic variety, to penetrate surface irregularities, especially those attributable to previous surface treatment of the samples and the impact of wear products. The dominant forms of surface damage were surface fatigue chipping and scratches caused by the particles which detached themselves from the surface of the steel samples, as observed for all the analysed coal variants. On the surfaces of the samples seasoned in the presence of claystones, highly varied forms of damage were observed: microcutting, scaly surface cracks, delamination, and deep cracks. In these cases, it was possible that the abrasive grains had been pressed into the steel surface irregularities, but no layered forms of the pressed-in abrasive material were observed to have developed. The paper also presents a model for the formation of coal films and discusses their possible effect on wear minimisation.https://www.mdpi.com/1996-1944/16/6/2136wearcoalclaystonetribologywear-resistant steels |
| spellingShingle | Andrzej N. Wieczorek Iwona Jonczy Krzysztof Filipowicz Mariusz Kuczaj Arkadiusz Pawlikowski Dariusz Łukowiec Marcin Staszuk Anna Gerle Study of the Impact of Coals and Claystones on Wear-Resistant Steels Materials wear coal claystone tribology wear-resistant steels |
| title | Study of the Impact of Coals and Claystones on Wear-Resistant Steels |
| title_full | Study of the Impact of Coals and Claystones on Wear-Resistant Steels |
| title_fullStr | Study of the Impact of Coals and Claystones on Wear-Resistant Steels |
| title_full_unstemmed | Study of the Impact of Coals and Claystones on Wear-Resistant Steels |
| title_short | Study of the Impact of Coals and Claystones on Wear-Resistant Steels |
| title_sort | study of the impact of coals and claystones on wear resistant steels |
| topic | wear coal claystone tribology wear-resistant steels |
| url | https://www.mdpi.com/1996-1944/16/6/2136 |
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