Reusable stud welding ferrule containing boron nitride
US5135154A · kind A · utility
7Cited by
8References
8Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Nov 9, 1990 |
| Grant date | Aug 4, 1992 |
| Priority date | — |
| Expiry date | Nov 9, 2010 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB23K9/32
- WIPO fieldMachine tools
- WIPO sectorMechanical engineering
Abstract
A welding accessory which includes an arc shield having outer and inner peripheral surfaces such that a weld can be formed within the inner peripheral surface as the arc shield shields the weld form external air during forming of the weld. The arc shield includes a ceramic material having not less than 40 weight % of boron nitride. The arc shield may be formed of a composite of boron nitride and silicon nitride, a composite of boron nitride and alumina nitride, a composite of boron nitride, aluminum and silicon nitride, or a composite of boron nitride and zirconia.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.