High-hardness hardfacing alloy powder
US9365913B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | May 3, 2012 |
| Grant date | Jun 14, 2016 |
| Priority date | — |
| Expiry date | Apr 26, 2034 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC21D2251/04
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
The present invention relates to a high-hardness hardfacing alloy powder, containing: 0.5<C≦3.0 mass %, 0.5≦Si≦5.0 mass %, 10.0≦Cr≦30.0 mass %, and 16.0<Mo≦40.0 mass %, with the balance being Co and unavoidable impurities, wherein a total amount of Mo and Cr satisfies 40.0≦Mo+Cr≦70.0 mass %. The high-hardness hardfacing alloy powder according to the present invention may further contain at least one element selected from the group consisting of: Ca≦0.03 mass %, P≦0.03 mass %, Ni≦5.0 mass % and Fe≦5.0 mass %. The high-hardness hardfacing alloy powder according to the present invention can be employed for build-up welding of a face part of a valve used in various internal combustion engines, automotive engines, steam turbines, heat exchangers, heating furnaces and the like.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.