Three dimensional printing of cermet or cemented carbide
AssigneeSandvik Intellectual Property AB
InventorsCarl-Johan Maderud, John De Flon
Life of this patent
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Abstract
The present invention relates to a powder mixture for three-dimensional (3D) printing of a cermet or a cemented carbide body. The powder mixture includes 65-85 wt % of porous cemented carbide or cermet particles of a median particle size (D50) of 10-35 μm, and 15-35 wt % of a dense cemented carbide or cermet particles of a median particle size (D50) of 3-10 μm. The present invention also relates to a method of making a cermet or cemented carbide body, the method including the steps of forming the powder mixture, 3D printing a body using the powder mixture and a printing binder and thereby forming a 3D printed cermet or cemented carbide green body and sintering the green body and to form a cermet or cemented carbide body.
Claims4
A method of making a cermet or cemented carbide body, said method comprising the steps of:
- mixing a powder of porous cermet and/or cemented carbide particles having a median particle size (D50) of 5-35 μm with a powder of dense cermet and/or cemented carbide particles having a median particle size of (D50) 3-15 μm, to form a powder mixture, wherein the powder mixture includes 65-85 wt % porous particles and 15-35 wt % dense particles;
- three-dimensional (3D) printing a body using said powder mixture and a printing binder to form a three-dimensional (3D) printed cermet or cemented carbide green body;
- and
- sintering said green body to form a cermet or cemented carbide body.
Dependencies are inferred from the claim text.