Nitrided maraging steel and method of manufacture thereof
US6733600B2 · kind B2 · utility
3Cited by
8References
14Claims
0Family size
Assignees
Inventors
Key dates
| Filing date | Jul 18, 2001 |
| Grant date | May 11, 2004 |
| Priority date | — |
| Expiry date | Jul 18, 2021 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF16G5/16
- WIPO fieldSurface technology, coating
- WIPO sectorChemistry
Abstract
A maraging steel is subjected to the aging to have a hardness of more than 500 Hv. A nitrided case is formed to have a depth that is about 20% to 50% to a ½ thickness of the maraging steel plate. An endless ring for a metal belt is constructed by the above maraging steel. According to methods of manufacturing the maraging steel and the endless ring, the nitrided case having the depth that is 20% to 50% of a distance from a plate surface to a center can be formed by executing an aging to have the hardness of more than 500 Hv, then executing a nitriding in the nitrogen atmosphere to which organic chloride is added.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.