Wear piece element and method of construction
US8752753B2 · kind B2 · utility
Inventor
Key dates
| Filing date | Dec 22, 2009 |
| Grant date | Jun 17, 2014 |
| Priority date | — |
| Expiry date | Feb 9, 2031 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/24174
- WIPO fieldMachine tools
- WIPO sectorMechanical engineering
Abstract
A method of construction of a tungsten carbide/TSP insert for hard facing a wear surface comprises the steps of forming a tungsten carbide body (12) in a mold. After the molding step, a channel section slot (24) or pocket (24′) is created in the body before it has hardened substantially. The body is then heat-treated to harden it. A TSP body (32) is fitted in the slot/pocket (24/24′) so that it is a close sliding fit between the sides (18) of the slot, and is of the same depth as the slot. The TSP is (preferably) brazed into the slot. The insert has pips (30) on its edges (18) to facilitate welding to a substrate prior to a final brazing step.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.