US 11,904,370 B2
Drawing die
Michael Droeschel, Mamer (LU); and Antonello Valsecchi, Alserio (IT)
Assigned to CERATIZIT Luxembourg S.A.R.L., Mamer (LU); and CERATIZIT Como S.P.A., Alserio (IT)
Appl. No. 17/259,654
Filed by CERATIZIT LUXEMBOURG S.A.R.L, Mamer (LU); and CERATIZIT COMO S.P.A., Alserio (IT)
PCT Filed Jul. 1, 2019, PCT No. PCT/EP2019/067523
§ 371(c)(1), (2) Date Jan. 12, 2021,
PCT Pub. No. WO2020/011575, PCT Pub. Date Jan. 16, 2020.
Claims priority of application No. 18183224 (EP), filed on Jul. 12, 2018.
Prior Publication US 2021/0323040 A1, Oct. 21, 2021
Int. Cl. B21C 3/02 (2006.01); C22C 29/08 (2006.01); C22C 32/00 (2006.01)
CPC B21C 3/02 (2013.01) [C22C 29/08 (2013.01); C22C 32/0026 (2013.01)] 10 Claims
OG exemplary drawing
 
1. A drawing die tool, comprising:
a drawing die of cemented carbide material comprising tungsten carbide and a metallic binder;
the cemented carbide material containing:
tungsten carbide having a mean grain size of 0.15-1.3 μm;
cobalt (Co) and nickel (Ni), with 0.5-5.0 wt.-% (Co+Ni), and with a ratio Co/(Co+Ni) of 0.6-0.9;
0.1-1.0 wt.-% chromium (Cr), with 0.05<Cr/(Co+Ni)<0.22;
0.03-0.08 wt.-% wt.-% molybdenum (Mo); and
0-0.04 wt.-% vanadium (V); and
the cemented carbide material being substantially free from η-phase.