Wear-resistant hard-surfacing for the rolls of high-pressure roll presses
US5601520A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jul 11, 1994 |
| Grant date | Feb 11, 1997 |
| Priority date | — |
| Expiry date | Jul 11, 2014 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB02C4/305
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
In order to create a wear-resistant hard-surfacing for the rolls of high-pressure roll presses for the compressive size reduction of granular material, which is suitable for autogenous wear protection and which is simple from the fabrication standpoint and also exhibits a long potential surface life with minimized danger of cracking, even under the action of high pressing compressive loads, it is proposed in accordance with the invention that a multitude of profiles, such as, in particular, nub pins (17), arranged at intervals from one another, be welded onto the roll surface by mold welding, specifically with the assistance of a mold (11) laid on the roll body (10), which mold is provided with radial through openings (12, 13, 14), which are filled with surface weld metal, after which, after solidification of the weld metal, the preferably water-cooled mold (11) is lifted off the roll (10).
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.