Drawing die
US11904370B2 · kind B2 · utility
0Cited by
5References
10Claims
0Family size
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Key dates
| Filing date | Jul 1, 2019 |
| Grant date | Feb 20, 2024 |
| Priority date | — |
| Expiry date | Jul 22, 2040 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB22F2998/10
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
A drawing die made from cemented carbide material is formed of tungsten carbide and a metallic binder. The cemented carbide material includes: tungsten carbide with an average grain size of 0.15-1.3 μm, 0.5-5.0 wt.-% (Co+Ni), with a ratio Co/(Co+Ni) of 0.6-0.9; 0.1-1.0 wt.-% Cr, with 0.05≤Cr/(Co+Ni)≤0.22; 0.02-0.2 wt.-% Mo; and 0-0.04 wt.-% V. The cemented carbide material is substantially free from η-phase.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.