Railway wheel and manufacturing method of the railway wheel
US5899516A · kind A · utility
12Cited by
3References
12Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jan 22, 1997 |
| Grant date | May 4, 1999 |
| Priority date | — |
| Expiry date | Jan 22, 2017 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC21D9/34
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
A wheel has both wear resistance and heat-crack resistance sufficient for use in a high-speed railway vehicle. The chemical composition of a base steel comprises 0.4 to 0.75 % C, 0.4 to 0.95% Si, 0.6 to 1.2% Mn and less than 0.2% Cr. The wheel has a pearlitic microstructure in a region of at least 50 mm in depth from the tread surface of the wheel. When the tread of the wheel is quenched, a particular cooling process is applied in order to obtain the pearlitic structure.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.