Brazing
US4880154A · kind A · utility
Inventor
Key dates
| Filing date | Apr 1, 1987 |
| Grant date | Nov 14, 1989 |
| Priority date | — |
| Expiry date | Apr 1, 2007 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB23K31/025
- WIPO fieldMachine tools
- WIPO sectorMechanical engineering
Abstract
In the brazing of a component which comprises a carbide substrate carrying a layer of PCD (polycrystalline diamond) to a steel body, appropriately shaped brazing shims are placed between mating surfaces which are to be brazed. The component is forced towards the steel body and the steel body is heated uniformly across its surface where brazing is to take place. This is achieved by means of an induction heater placed adjacent the steel body at a position remote from that surface of the steel body where brazing is to take place. The local temperature at the PCD layer is monitored continuously and the heating process controlled so that this local temperature does not exceed 750.degree.. After brazing, the component and steel body are permitted to cool down slowly to ambient temperature.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.