Tube having strain-hardened inside coating
US4641450A · kind A · utility
22Cited by
6References
5Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Apr 18, 1985 |
| Grant date | Feb 10, 1987 |
| Priority date | — |
| Expiry date | Apr 18, 2005 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/13
- WIPO fieldSurface technology, coating
- WIPO sectorChemistry
Abstract
To manufacture tubes having a wear-resistant inside coating, such as gun barrels, hard material layers are deposited on the barrel and the layers are strain-hardened in their surface area by at least the ratio of the area by which the surface area is reduced by compression divided by the surface area of 0.001 (.DELTA.F/F=1.10.sup.-3) or reducing the area of the layer by 0.1%.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.