Process for uniting sleeve members by brazing
US4572938A · kind A · utility
10Cited by
25References
6Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jan 16, 1984 |
| Grant date | Feb 25, 1986 |
| Priority date | — |
| Expiry date | Jan 16, 2004 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB23K1/18
- WIPO fieldMachine tools
- WIPO sectorMechanical engineering
Abstract
Small portable electrical resistance heated radiant heating unit useful for insertion in tube bores to effect localized high temperature heating. Useful for the internal heating of tubes and tube/sleeve assemblies in steam generators, for brazing, stress relieving, and other applications. Has a machined mandrel of boron nitride and electrical resistance wire leads that have reduced electrical resistance for reduced heat generation by the leads. The leads preferably are braided, to permit the use of cramped connectors.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.