GB346473A - Improvements in and relating to methods of making compositions of matter having cutting or abrading characteristics - Google Patents

Improvements in and relating to methods of making compositions of matter having cutting or abrading characteristics

Info

Publication number
GB346473A
GB346473A GB1840/30A GB184030A GB346473A GB 346473 A GB346473 A GB 346473A GB 1840/30 A GB1840/30 A GB 1840/30A GB 184030 A GB184030 A GB 184030A GB 346473 A GB346473 A GB 346473A
Authority
GB
United Kingdom
Prior art keywords
cobalt
cutting
carbide
particles
metal
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
GB1840/30A
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
FIRTH STERLING STEEL CO
Original Assignee
FIRTH STERLING STEEL CO
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by FIRTH STERLING STEEL CO filed Critical FIRTH STERLING STEEL CO
Priority to GB1840/30A priority Critical patent/GB346473A/en
Publication of GB346473A publication Critical patent/GB346473A/en
Expired legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B24—GRINDING; POLISHING
    • B24D—TOOLS FOR GRINDING, BUFFING OR SHARPENING
    • B24D3/00—Physical features of abrasive bodies, or sheets, e.g. abrasive surfaces of special nature; Abrasive bodies or sheets characterised by their constituents
    • B24D3/02—Physical features of abrasive bodies, or sheets, e.g. abrasive surfaces of special nature; Abrasive bodies or sheets characterised by their constituents the constituent being used as bonding agent
    • B24D3/04—Physical features of abrasive bodies, or sheets, e.g. abrasive surfaces of special nature; Abrasive bodies or sheets characterised by their constituents the constituent being used as bonding agent and being essentially inorganic
    • B24D3/06—Physical features of abrasive bodies, or sheets, e.g. abrasive surfaces of special nature; Abrasive bodies or sheets characterised by their constituents the constituent being used as bonding agent and being essentially inorganic metallic or mixture of metals with ceramic materials, e.g. hard metals, "cermets", cements
    • B24D3/08—Physical features of abrasive bodies, or sheets, e.g. abrasive surfaces of special nature; Abrasive bodies or sheets characterised by their constituents the constituent being used as bonding agent and being essentially inorganic metallic or mixture of metals with ceramic materials, e.g. hard metals, "cermets", cements for close-grained structure, e.g. using metal with low melting point
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
    • C09K3/00—Materials not provided for elsewhere
    • C09K3/14—Anti-slip materials; Abrasives
    • C09K3/1436—Composite particles, e.g. coated particles
    • C09K3/1445—Composite particles, e.g. coated particles the coating consisting exclusively of metals
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C1/00—Making non-ferrous alloys
    • C22C1/04—Making non-ferrous alloys by powder metallurgy
    • C22C1/05—Mixtures of metal powder with non-metallic powder
    • C22C1/051—Making hard metals based on borides, carbides, nitrides, oxides or silicides; Preparation of the powder mixture used as the starting material therefor
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
    • B22F2998/00—Supplementary information concerning processes or compositions relating to powder metallurgy

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Materials Engineering (AREA)
  • Organic Chemistry (AREA)
  • Ceramic Engineering (AREA)
  • Inorganic Chemistry (AREA)
  • Composite Materials (AREA)
  • Metallurgy (AREA)
  • Powder Metallurgy (AREA)

Abstract

Cutting and abrading compositions suitable for making bits, milling cutters, shapers, drills, and dies, especially dies for drawing wire, are obtained by coating fine particles of cutting agent with metal of lower melting point by electro-deposition, compacting the particles, and sintering at a temperature to melt the metal but not the cutting agent. Cutting agents specified are tungsten carbide, silicon carbide, chromium carbide, and mixtures thereof. Coating agents specified are cobalt, copper, nickel, iron, alloys, or mixtures thereof. Two or more layers of the same or different metal may be used. In an example, tungsten carbide passing through a screen of 325 meshes per sq. in. is coated with 0,1-50,0 per cent of cobalt deposited electrolytically from an aqueous solution cobalt ammonium sulphate, cobalt sulphate, or cobalt chloride; preferably 3,5-13,0 lb. of cobalt are deposited on 96,5-87,0 lb. of carbide. The coated particles are washed, dried, compacted at 1000-300,000 lb. per sq. in., and sintered at about 1800 DEG F. under neutral or reducing conditions, e.g. in an atmosphere of hydrogen. The material is then ground, sawn, filed, or otherwise shaped, and again sintered under non-oxidizing conditions at about 2650 DEG F. The loose coated particles may be pressed to shape before, during, or both before and during the first sintering.ALSO:Cutting and abrading compositions suitable for making bits, milling cutters, shapers, drills, and dies, especially dies for drawing wire, are obtained by coating fine particles of cutting agent with metal of lower melting-point by electrodeposition, compacting the particles, and sintering at a temperature to melt the metal but not the cutting agent. Cutting agents specified are tungsten carbide, silicon carbide, chromium carbide, and mixtures thereof. Coating agents specified are cobalt, copper, nickel, iron, alloys, or mixtures thereof. Two or more layers of the same or different metal may be used. In an example, tungsten carbide passing through a screen of 325 meshes per sq. in. is coated with 0,1-50,0 per cent of cobalt deposited electrolytically from an aqueous solution of cobalt ammonium sulphate, cobalt sulphate, or cobalt chloride; preferably 3,5-13,0 lb. of cobalt are deposited on 96,5-87,0 lb. of carbide. The coated particles are washed, dried, compacted at 1000-300,000 lb. per sq. in., and sintered at about 1800 DEG F. under neutral or reducing conditions, e.g. in an atmosphere of hydrogen. The material is then ground, sawn, filed, or otherwise shaped, and again sintered under non-oxidizing conditions at about 2650 DEG F. The loose coated particles may be pressed to shape, before, during, or both before and during the first sintering.
GB1840/30A 1930-01-18 1930-01-18 Improvements in and relating to methods of making compositions of matter having cutting or abrading characteristics Expired GB346473A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB1840/30A GB346473A (en) 1930-01-18 1930-01-18 Improvements in and relating to methods of making compositions of matter having cutting or abrading characteristics

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB1840/30A GB346473A (en) 1930-01-18 1930-01-18 Improvements in and relating to methods of making compositions of matter having cutting or abrading characteristics

Publications (1)

Publication Number Publication Date
GB346473A true GB346473A (en) 1931-04-16

Family

ID=9728907

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1840/30A Expired GB346473A (en) 1930-01-18 1930-01-18 Improvements in and relating to methods of making compositions of matter having cutting or abrading characteristics

Country Status (1)

Country Link
GB (1) GB346473A (en)

Cited By (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2497110A (en) * 1946-02-04 1950-02-14 Eitel Mccullough Inc Method of making electrodes
US2642654A (en) * 1946-12-27 1953-06-23 Econometal Corp Electrodeposited composite article and method of making the same
US3296693A (en) * 1962-09-21 1967-01-10 Shirley J Carter Tungsten carbide brazing
US3375181A (en) * 1956-07-02 1968-03-26 Koech Gunther Method of forming an abrasive surface including grinding and chemically dressing
US3669850A (en) * 1969-07-18 1972-06-13 Cedo Draca Method for the production of abrasive brushing elements
EP0686704A1 (en) 1994-06-10 1995-12-13 Sandvik Aktiebolag Method of preparing powders for hard materials
US5529804A (en) * 1994-03-31 1996-06-25 Sandvik Ab Method of making metal composite powders
US5885653A (en) * 1995-02-09 1999-03-23 Sandvik Ab Method of making metal composite materials
EP1043412A1 (en) * 1999-04-06 2000-10-11 Sandvik Aktiebolag Method of making a submicron cemented carbide with increased toughness
US6221479B1 (en) 1996-07-19 2001-04-24 Sandvik Ab Cemented carbide insert for turning, milling and drilling
US6468680B1 (en) 1998-07-09 2002-10-22 Sandvik Ab Cemented carbide insert with binder phase enriched surface zone
US6626975B1 (en) 1999-01-15 2003-09-30 H. C. Starck Gmbh & Co. Kg Method for producing hard metal mixtures
US6673307B1 (en) 1998-07-13 2004-01-06 Sandvik Ab Method of making cemented carbide

Cited By (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2497110A (en) * 1946-02-04 1950-02-14 Eitel Mccullough Inc Method of making electrodes
US2642654A (en) * 1946-12-27 1953-06-23 Econometal Corp Electrodeposited composite article and method of making the same
US3375181A (en) * 1956-07-02 1968-03-26 Koech Gunther Method of forming an abrasive surface including grinding and chemically dressing
US3296693A (en) * 1962-09-21 1967-01-10 Shirley J Carter Tungsten carbide brazing
US3669850A (en) * 1969-07-18 1972-06-13 Cedo Draca Method for the production of abrasive brushing elements
US5529804A (en) * 1994-03-31 1996-06-25 Sandvik Ab Method of making metal composite powders
EP0686704A1 (en) 1994-06-10 1995-12-13 Sandvik Aktiebolag Method of preparing powders for hard materials
US5594929A (en) * 1994-06-10 1997-01-14 Sandvik Ab Method of preparing powders for hard materials
US5885653A (en) * 1995-02-09 1999-03-23 Sandvik Ab Method of making metal composite materials
US6221479B1 (en) 1996-07-19 2001-04-24 Sandvik Ab Cemented carbide insert for turning, milling and drilling
USRE40026E1 (en) 1996-07-19 2008-01-22 Sandvik Intellectual Property Ab Cemented carbide insert for turning, milling and drilling
US6468680B1 (en) 1998-07-09 2002-10-22 Sandvik Ab Cemented carbide insert with binder phase enriched surface zone
US6673307B1 (en) 1998-07-13 2004-01-06 Sandvik Ab Method of making cemented carbide
US6626975B1 (en) 1999-01-15 2003-09-30 H. C. Starck Gmbh & Co. Kg Method for producing hard metal mixtures
EP1043412A1 (en) * 1999-04-06 2000-10-11 Sandvik Aktiebolag Method of making a submicron cemented carbide with increased toughness
US6214287B1 (en) 1999-04-06 2001-04-10 Sandvik Ab Method of making a submicron cemented carbide with increased toughness
USRE40785E1 (en) 1999-04-06 2009-06-23 Sandvik Intellectual Property Aktiebolag Method of making a submicron cemented carbide with increased toughness

Similar Documents

Publication Publication Date Title
GB346473A (en) Improvements in and relating to methods of making compositions of matter having cutting or abrading characteristics
US1833099A (en) Method of making a composition of matter
US2292694A (en) Material for hard facing metallic objects
US1913100A (en) Method of making hard alloys
US3000087A (en) Sintered tungsten carbide alloy product
US2279003A (en) Hard facing material and method of making the same
DE622347C (en) Process for the production of hard metal alloys for work equipment and tools from tungsten carbide and an additional auxiliary metal
US1822426A (en) Composition of matter and method of making the same
US2204412A (en) Weld rod
US2179836A (en) Hard facing alloy
DE751241C (en) Drilling tool
DE2124637A1 (en) Abrasive particles
US1826456A (en) Metal aggregate
DE627862C (en) Tool cutting edge and process for their manufacture
US1843768A (en) Hard metal composition and method of making the same
US2021576A (en) Composition of matter for steel cutting tools, drawing dies, and the like
GB485565A (en) Improvements in and relating to the production of tools comprising diamond
DE900649C (en) Welding rods for build-up welding
US1892653A (en) Process of manufacturing a composition of matter
DE936619C (en) Abrasive bodies with cores of a hard material embedded in a metallic binder, e.g. B. Diamond and its method of manufacture
US2224448A (en) Wear resisting alloy
DE659534C (en) Cutting tools made from a hard alloy with particularly high toughness
US2053151A (en) Cemented tantalum carbide
US1698936A (en) Alloy
US1943541A (en) Method of reclaiming and reusing metallic scrap mixtures