公开(公告)号：US10343212B2

公开(公告)日：2019-07-09

申请号：US15391251

申请日：2016-12-27

申请人： Wenhui Jiang

发明人： Wenhui Jiang

IPC分类号： B22F1/02 ,  B23K35/02 ,  C22C19/05 ,  C04B35/56 ,  C04B35/628 ,  C22C14/00 ,  C22C16/00 ,  C22C29/08

摘要： A composite composition comprising tungsten carbide particles having a barrier coating and a binder is described, which is used as hardfacing materials. The tungsten carbide particles comprise at least one kind of cast tungsten carbide, carburized tungsten carbide, macro-crystalline tungsten carbide and sintered tungsten carbide. The barrier coating comprises at least one of metal carbides, borides, nitrides, carbonitrides, carboborides, nitroborides and carbonitroborides. The binder alloys take one of the forms selected from a welding/brazing tube, rod, rope, powder, paste, slurry and cloth, which are suitable for being applied by various welding or brazing methods. The barrier coating would prevent or mitigate the degradation of the tungsten carbide particles due to attack of a molten binder alloy during a welding or brazing process.

公开(公告)号：US10286454B2

公开(公告)日：2019-05-14

申请号：US15127312

申请日：2015-03-24

申请人： MITSUBISHI MATERIALS CORPORATION

发明人： Makoto Igarashi

IPC分类号： B23B27/14 ,  B23B27/18 ,  C22C26/00 ,  B22F7/06 ,  C22C29/08 ,  C22C9/06 ,  C22C14/00 ,  C22C19/00 ,  C22C19/03 ,  C22C29/02 ,  C23C30/00 ,  B23C5/18 ,  B22F5/00

摘要： A composite part includes: a cutting edge part made of cubic boron nitride sintered material or WC-based cemented carbide; a cutting tool body made of cemented carbide; and a bonding part between the cutting edge part and the cutting tool body. A primarily TiC layer containing 50 area % or more of TiC is formed in an interface between the cemented carbide and the bonding part, and has a thickness of 0.5-3 μm. Ti—Ni enriched layer containing each of Ti and Ni at 30 atomic % or more is formed adjacent to the primarily TiC layer and has a thickness of 0.3-3 μm. An intermittent net structure containing each of Ti, Ni and C at 10 atomic % or more is formed adjacent to the primarily TiC layer. A straight line overlapping with a major axis of each of crystal grains intersects 3 or more other crystal grains.

公开(公告)号：US20190112679A1

公开(公告)日：2019-04-18

申请号：US16090271

申请日：2017-03-30

申请人： PRAMET TOOLS, S.R.O.

发明人： Petr FLASAR

IPC分类号： C21D1/74 ,  C21D1/09 ,  C22C29/08 ,  B22F3/24 ,  B22F3/105

摘要： A cemented carbide body includes WC in a metallic binder phase. The cemented carbide body has a bulk portion and a surface portion. The grain size of the WC in the surface portion is smaller than the grain size in the bulk portion of the body and this gives an increased surface hardness and an increased wear resistance. The median grain thickness, tg, of WC in the surface portion is 20-300 nm and the average grain size in the bulk portion is 0.5-8 μm. A method of surface hardening a cemented carbide body is also provided.

公开(公告)号：US20190084290A1

公开(公告)日：2019-03-21

申请号：US16196846

申请日：2018-11-20

申请人： Kennametal Inc.

发明人： Pantcho STOYANOV ,  Paul PRICHARD

IPC分类号： B33Y70/00 ,  B33Y10/00 ,  C22C29/08

摘要： Methods of making sintered articles from powder metal carbide compositions by additive manufacturing techniques are described herein. Sintered carbide articles fabricated by such additive manufacturing techniques, in some embodiments, exhibit densities equaling articles formed according to conventional techniques employed in powder metallurgy. For example, a method of manufacturing an article comprises providing sintered cemented carbide powder comprising a hard particle phase including tungsten carbide and a metallic binder phase and forming the sintered cemented carbide powder into a green article by one or more additive manufacturing techniques. The green article is sintered to provide a sintered article having density greater than 90% theoretical full density, wherein the green article has a density less than 50% theoretical full density prior to sintering.

公开(公告)号：US20190047051A1

公开(公告)日：2019-02-14

申请号：US15675078

申请日：2017-08-11

申请人： Kennametal Inc.

发明人： Pankaj K. MEHROTRA ,  Pankaj B. TRIVEDI ,  Kent P. MIZGALSKI

IPC分类号： B22F3/16 ,  C22C29/08 ,  B22F9/04 ,  C04B35/56

摘要： In one aspect, grade powder compositions are described herein comprising electrochemically processed sintered carbide scrap. In some embodiments, a grade powder composition comprises a reclaimed powder component in an amount of at least 75 weight percent of the grade powder composition, wherein the reclaimed carbide component comprises electrochemically processed sintered carbide scrap.

公开(公告)号：US20190032239A1

公开(公告)日：2019-01-31

申请号：US16077169

申请日：2017-02-14

申请人： JFE STEEL CORPORATION ,  TOCALO CO., LTD.

发明人： Yuya BABA ,  Junichi TAKEUCHI ,  Yoshifumi KOBAYASHI

IPC分类号： C25D17/10 ,  C22C29/08 ,  C23C4/10 ,  C25D5/04

摘要： Disclosed is a cermet powder that enables preparation of a cermet coating having both high wear resistance and high corrosion resistance against a strong acid having a pH of less than 1. The disclosed cermet powder contains tungsten carbide particles in an amount of 40 mass % or more; molybdenum carbide particles in an amount of 10 mass % to 40 mass %; and Ni or a Ni alloy as a matrix metal, wherein the cermet powder further contains chromium, either as a carbide or a metal or alloy element contained in the matrix metal, in an amount of 8 mass % or more.

公开(公告)号：US20190024221A1

公开(公告)日：2019-01-24

申请号：US16083062

申请日：2017-03-09

申请人： CERATIZIT AUSTRIA GESELLSCHAFT M.B.H.

发明人： CHRISTINE TOUFAR ,  UWE SCHLEINKOFER

IPC分类号： C22C29/08 ,  C22C29/06

摘要： A cutting machining tool for metal-containing materials has a base material composed of cemented hard material with hard material particles embedded in a ductile metallic binder. The metallic binder is a Co—Ru alloy and the hard material particles are formed at least predominantly by tungsten carbide, having an average grain size of the tungsten carbide of 0.1-1.2 μm. The cemented hard material has a Co+Ru content of 5-17% by weight of the cemented hard material, a Ru content of 6-16% by weight of the Co+Ru content, a Mo content in the range 0.1-3.0% by weight of the cemented hard material, a content of Ti, Ta and/or Nb of in each case

公开(公告)号：US20190022755A1

公开(公告)日：2019-01-24

申请号：US16067150

申请日：2016-12-19

申请人： Element Six (UK) Limited

发明人： Nedret CAN ,  David William HARDEMAN

IPC分类号： B22F3/14 ,  B22F1/00 ,  B22F3/11 ,  B22F7/00 ,  B22F7/06 ,  C04B35/52 ,  C22C29/08

摘要： A superhard polycrystalline construction comprises a body of polycrystalline superhard material formed of a mass of superhard grains exhibiting inter-granular bonding and defining a plurality of interstitial regions therebetween, and a non-superhard phase at least partially filling a plurality of the interstitial regions and having an associated shape factor of greater than around 0.65 and a substrate bonded to the body of superhard material along an interface, the substrate having a region adjacent the interface comprising binder material in an amount at least 5% less than the remainder of the substrate.

公开(公告)号：US20190003019A1

公开(公告)日：2019-01-03

申请号：US16064749

申请日：2016-12-20

申请人： FUJIMI INCORPORATED

发明人： Hiroyuki IBE ,  Junya YAMADA

IPC分类号： C22C29/08 ,  B33Y70/00 ,  B28B1/00 ,  B33Y30/00 ,  C22C32/00 ,  B23K26/00 ,  B23K26/342

摘要： A material for shaping is provided, with which it is possible to more effectively shape a shaped article that has high density while containing a ceramic. The present invention provides a material for shaping in order for use in powder additive manufacturing. This material for shaping includes a first powder that is a granulated powder containing a ceramic, and a second powder containing a metal. The second powder constitutes 10-90% by mass (exclusive) of the total of the first powder and the second powder.

公开(公告)号：US10167673B2

公开(公告)日：2019-01-01

申请号：US15223699

申请日：2016-07-29

申请人： Baker Hughes Incorporated ,  TDY Industries, LLC

发明人： Prakash K. Mirchandani ,  Jimmy W. Eason ,  James J. Oakes ,  James C. Westhoff ,  Gabriel B. Collins

IPC分类号： E21B10/46 ,  E21B10/62 ,  E21B10/627 ,  E21B10/633 ,  E21B10/08 ,  C22C1/00 ,  C22C29/00 ,  C22C29/08 ,  B22F1/00 ,  C22C19/03 ,  C22C19/07 ,  C22C27/04 ,  C22C30/00 ,  C22C38/00 ,  E21B10/42 ,  E21B10/567 ,  B22F5/00 ,  C22C1/05 ,  C22C1/10 ,  C22C29/14 ,  C22C29/16 ,  C22C29/18

摘要： Binder compositions for use in forming a bit body of an earth-boring bit include at least one of cobalt, nickel, and iron, and at least one melting point-reducing constituent selected from at least one of a transition metal carbide up to 60 weight percent, a transition metal boride up to 60 weight percent, and a transition metal silicide up to 60 weight percent, wherein the weight percentages are based on the total weight of the binder. Earth-boring bit bodies include a cemented tungsten carbide material comprising tungsten carbide and a metallic binder, wherein the tungsten carbide comprises greater than 75 volume percent of the cemented tungsten carbide material.