Provided is a method of manufacturing a three-dimensional (3D) object by forming a printable cemented carbide powder with a full density by a dual sintering cycle process. The formed fully densified printable cemented carbide powder is next used in binder jet additive manufacturing to 3D print the object.
C22C 1/051 - Making hard metals based on borides, carbides, nitrides, oxides or silicides; Preparation of the powder mixture used as the starting material therefor
C22C 29/06 - Alloys based on carbides, oxides, borides, nitrides or silicides, e.g. cermets, or other metal compounds, e. g. oxynitrides, sulfides based on carbides or carbonitrides based on carbides, but not containing other metal compounds
C22C 29/08 - Alloys based on carbides, oxides, borides, nitrides or silicides, e.g. cermets, or other metal compounds, e. g. oxynitrides, sulfides based on carbides or carbonitrides based on carbides, but not containing other metal compounds based on tungsten carbide
Provided is a cemented carbide composition that includes a carbide phase including reclaimed carbide material in an amount of greater than 70 wt.% of the cemented carbide composition. The cemented carbide composition further includes a binder phase. The reclaimed carbide material includes from about 45 wt.% to about 100 wt.% zinc-reclaimed carbide. The cemented carbide composition is devoid of any electrochemically processed recycled material. The cemented carbide composition exhibits equivalent or superior mechanical properties including e.g. hardness, fracture toughness, and transverse rupture strength when compared to a reference material including solely virgin raw materials. Further provided is a method of making a sintered cemented carbide article as well as a cutting tool or cutting tool blank using the provided cemented carbide composition.
C22C 1/051 - Making hard metals based on borides, carbides, nitrides, oxides or silicides; Preparation of the powder mixture used as the starting material therefor
C22C 29/06 - Alloys based on carbides, oxides, borides, nitrides or silicides, e.g. cermets, or other metal compounds, e. g. oxynitrides, sulfides based on carbides or carbonitrides based on carbides, but not containing other metal compounds
C22C 29/08 - Alloys based on carbides, oxides, borides, nitrides or silicides, e.g. cermets, or other metal compounds, e. g. oxynitrides, sulfides based on carbides or carbonitrides based on carbides, but not containing other metal compounds based on tungsten carbide
E21B 10/42 - Rotary drag type drill bits with teeth, blades or like cutting elements, e.g. fork-type bits, fish tail bits
B22F 5/00 - Manufacture of workpieces or articles from metallic powder characterised by the special shape of the product
Provided is a cemented carbide composition having a hard phase made of tungsten carbide (WC) as a first hard phase component and at least one second hard phase component selected from the group consisting of tantalum carbide (TaC), niobium carbide (NbC), and mixtures thereof, and a binder phase made of at least one binder component selected from the group consisting of cobalt (Co), nickel (Ni), and mixtures thereof. Also provided is a cemented carbide composition having a hard phase made of WC as a hard phase, NbC as an anti-galling phase, and TaC as a toughness improver, and a binder phase made of at least one binder component selected from the group consisting of Co, Ni, and mixtures thereof. Associated methods of producing the cemented carbide compositions and tools incorporating the same are additionally contemplated.
C22C 29/08 - Alloys based on carbides, oxides, borides, nitrides or silicides, e.g. cermets, or other metal compounds, e. g. oxynitrides, sulfides based on carbides or carbonitrides based on carbides, but not containing other metal compounds based on tungsten carbide
Provided are (I) cemented carbide compositions including a ceramic hard phase having metal carbides of niobium carbide, tungsten carbide, and tantalum carbide and (II) cermet compositions including a ceramic hard phase having metal carbides or carbonitrides of titanium carbonitride, niobium carbide, and tungsten carbide. The cemented carbide and the cermet compositions further include a high-entropy-alloy (HEA) binder phase having metals selected from one or more of nickel, molybdenum, cobalt, tungsten, iron and chromium. Associated methods of manufacturing cemented carbides and cermets and cutting tools incorporating the same are further contemplated.
C22C 1/051 - Making hard metals based on borides, carbides, nitrides, oxides or silicides; Preparation of the powder mixture used as the starting material therefor
C22C 29/00 - Alloys based on carbides, oxides, borides, nitrides or silicides, e.g. cermets, or other metal compounds, e. g. oxynitrides, sulfides
C22C 29/04 - Alloys based on carbides, oxides, borides, nitrides or silicides, e.g. cermets, or other metal compounds, e. g. oxynitrides, sulfides based on carbides or carbonitrides based on carbonitrides
C22C 29/06 - Alloys based on carbides, oxides, borides, nitrides or silicides, e.g. cermets, or other metal compounds, e. g. oxynitrides, sulfides based on carbides or carbonitrides based on carbides, but not containing other metal compounds
23222C, TiC, TaC, NbC, VC, and CrsC and mixtures thereof. The provided cemented carbides have improved properties, such as improved galling resistance, Vickers hardness, Palmqvist fracture toughness and coercive force.
C22C 29/06 - Alloys based on carbides, oxides, borides, nitrides or silicides, e.g. cermets, or other metal compounds, e. g. oxynitrides, sulfides based on carbides or carbonitrides based on carbides, but not containing other metal compounds
C22C 29/08 - Alloys based on carbides, oxides, borides, nitrides or silicides, e.g. cermets, or other metal compounds, e. g. oxynitrides, sulfides based on carbides or carbonitrides based on carbides, but not containing other metal compounds based on tungsten carbide
B22F 5/00 - Manufacture of workpieces or articles from metallic powder characterised by the special shape of the product
6.
CEMENTED CARBIDE WITH A BINDER PHASE HAVING NANOMETRIC CARBIDE PRECIPITATES THEREIN AND METHOD OF FABRICATING A CEMENTED CARBIDE HAVING NANOMETRIC CARBIDE PRECIPITATES THEREIN
Provided are cemented carbides having a binder phase having nanometric carbide precipitates therein. The cemented carbides have improved hardness properties by increasing the hardness of the binder phase, while retaining good levels of fracture toughness. In addition, a method of fabricating the cemented carbides having a binder phase having nanometric carbide precipitates therein is disclosed.
C22C 1/051 - Making hard metals based on borides, carbides, nitrides, oxides or silicides; Preparation of the powder mixture used as the starting material therefor
C22C 29/08 - Alloys based on carbides, oxides, borides, nitrides or silicides, e.g. cermets, or other metal compounds, e. g. oxynitrides, sulfides based on carbides or carbonitrides based on carbides, but not containing other metal compounds based on tungsten carbide
Provided is a rotary cutting unit including (i) a frame, (ii) a rotary cutter including a rotary cutting drum having a rotary cutting surface with a first axis of rotation, At least one knife member is anchored on the rotary cutting surface. The rotary cutting unit further includes (iii) an anvil including an anvil portion having an anvil surface configured to directly contact the at least one knife member with a second axis of rotation. Surfaces of a first load bearing structure on the rotary cutting drum and of a second load-bearing structure on the anvil contact each other. These structures are located preferably on only one end of the cutting drum and the anvil, so that Further provided is a rotary cutting system including a plurality of rotary cutting units.
B26D 1/62 - Cutting through work characterised by the nature or movement of the cutting member; Apparatus or machines therefor; Cutting members therefor involving a cutting member which travels with the work, i.e. flying cutter and is rotating about an axis parallel to the line of cut, e.g. mounted on a rotary cylinder
A cemented tungsten carbide body is formed by mixing a tungsten carbide powder and a cobalt powder together to form a powder mixture. The tungsten carbide powder makes up greater than or equal to 80 weight percent of the powder mixture, while the cobalt binder powder makes up about 1.5 weight percent to about 20 weight percent of the powder mixture. Next, the powder mixture is compacted to form a green compact, and a boron nitride coating is applied to a surface of the green compact to form a coated compact. The coated compact is sintered at a temperature sufficient to melt the cobalt powder, such that boron from the boron nitride coating diffuses into the compact and creates a gradient of metallic cobalt and boron extending inward from the surface. The metallic cobalt content increases from the surface inward, while the boron content decreases from the surface inward.
C22C 29/08 - Alloys based on carbides, oxides, borides, nitrides or silicides, e.g. cermets, or other metal compounds, e. g. oxynitrides, sulfides based on carbides or carbonitrides based on carbides, but not containing other metal compounds based on tungsten carbide
B22F 5/00 - Manufacture of workpieces or articles from metallic powder characterised by the special shape of the product
patents
