The Influence of Cross-Wedge Rolling on the Microstructure of Railway Axles Made of EA1N Steel
Fragment książki (Rozdział monografii pokonferencyjnej)
MNiSW
20
Poziom I
| Status: | |
| Autorzy: | Bulzak Tomasz, Kusiak Tomasz, Lis Konrad, Wójcik Łukasz |
| Dyscypliny: | |
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| Wersja dokumentu: | Drukowana | Elektroniczna |
| Język: | angielski |
| Strony: | 21 - 30 |
| Efekt badań statutowych | NIE |
| Finansowanie: | The research was financed in the framework of the project: Development of new rolling technologies for rail axle forgings, No. LIDER/9/0060/L-12/20/NCBR/2021. Total cost of the Project: 1 466 831.25 PLN. The project is financed by the National Centre for Research and Development under the 12th edition of the LIDER Programme. |
| Materiał konferencyjny: | TAK |
| Nazwa konferencji: | 2nd International Conference on Engineering Manufacture 2024 |
| Skrócona nazwa konferencji: | EM 2024 |
| URL serii konferencji: | LINK |
| Termin konferencji: | 9 maja 2024 do 10 maja 2024 |
| Miasto konferencji: | Porto |
| Państwo konferencji: | PORTUGALIA |
| Publikacja OA: | NIE |
| Abstrakty: | angielski |
| Railway axle forgings are manufactured using open die forging technologies on hydraulic presses or rotary swaging machines. Railway axles made of EA1N steel according to EN 13261 should be characterised by a homogeneous ferrite–perlite structure. This article considers the impact of cross wedge rolling technology on the microstructure quality of railway axles. Numerical simulation using the finite element method was carried out. The results of the numerical simulations made it possible to determine the value and distribution of plastic strain in the railway axle forging. In the laboratory tests carried out, railway axle forgings were obtained for microstructure studies. The tests carried out showed a strong relationship between the plastic deformation value and the microstructure state of the obtained railway axle forgings. The microstructure of EA1N steel after rolling and air cooling shows a large inhomogeneity of ferrite and pearlite grain sizes. The heat treatment carried out by normalizing achieved a structure suitable for railway axles. In summary, the research carried out confirmed the possibility of rolling railway axes for which a proper uniform ferrite–perlite microstructure can be obtained. |
