GB586960A - Improvements in or relating to abrading tools - Google Patents

Improvements in or relating to abrading tools

Info

Publication number
GB586960A
GB586960A GB784746A GB784746A GB586960A GB 586960 A GB586960 A GB 586960A GB 784746 A GB784746 A GB 784746A GB 784746 A GB784746 A GB 784746A GB 586960 A GB586960 A GB 586960A
Authority
GB
United Kingdom
Prior art keywords
per cent
copper
mixture
metal
compressed
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
GB784746A
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.)
NEVEROIL BEARING Co
American Optical Corp
Original Assignee
NEVEROIL BEARING Co
American Optical Corp
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 NEVEROIL BEARING Co, American Optical Corp filed Critical NEVEROIL BEARING Co
Priority to GB784746A priority Critical patent/GB586960A/en
Publication of GB586960A publication Critical patent/GB586960A/en
Expired legal-status Critical Current

Links

Classifications

    • E—FIXED CONSTRUCTIONS
    • E21—EARTH OR ROCK DRILLING; MINING
    • E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
    • E21B10/00—Drill bits
    • E21B10/46—Drill bits characterised by wear resisting parts, e.g. diamond inserts
    • E21B10/48—Drill bits characterised by wear resisting parts, e.g. diamond inserts the bit being of core type
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B24—GRINDING; POLISHING
    • B24D—TOOLS FOR GRINDING, BUFFING OR SHARPENING
    • B24D18/00—Manufacture of grinding tools or other grinding devices, e.g. wheels, not otherwise provided for
    • 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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B28—WORKING CEMENT, CLAY, OR STONE
    • B28D—WORKING STONE OR STONE-LIKE MATERIALS
    • B28D1/00—Working stone or stone-like materials, e.g. brick, concrete or glass, not provided for elsewhere; Machines, devices, tools therefor
    • B28D1/02—Working stone or stone-like materials, e.g. brick, concrete or glass, not provided for elsewhere; Machines, devices, tools therefor by sawing
    • B28D1/04—Working stone or stone-like materials, e.g. brick, concrete or glass, not provided for elsewhere; Machines, devices, tools therefor by sawing with circular or cylindrical saw-blades or saw-discs
    • B28D1/041—Working stone or stone-like materials, e.g. brick, concrete or glass, not provided for elsewhere; Machines, devices, tools therefor by sawing with circular or cylindrical saw-blades or saw-discs with cylinder saws, e.g. trepanning; saw cylinders, e.g. having their cutting rim equipped with abrasive particles

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Mining & Mineral Resources (AREA)
  • Chemical & Material Sciences (AREA)
  • Geology (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Physics & Mathematics (AREA)
  • Inorganic Chemistry (AREA)
  • Environmental & Geological Engineering (AREA)
  • Fluid Mechanics (AREA)
  • Ceramic Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Polishing Bodies And Polishing Tools (AREA)

Abstract

An abrading tool comprises abrasive such as crushed diamonds, sapphires, corundum &c. dispersed throughout at least a portion of a sintered mixture of 75-90 per cent. cobalt and 10-25 per cent. copper, preferably 83.5 per cent. cobalt and 16.5 per cent. copper. In forming the tool, which is of the same general construction as that described in Specification 586,959, particles of metal are compressed in a space between a central member and sleeve by a plunger under a pressure of 20 tons per sq. in. A mixture of abrasive and metal particles is then placed on top of the compressed metal, which may be dusted with copper, and another plunger, having the desired shape of end surface, compresses the mixture at a pressure of 60 tons per sq. in. The compressed assembly is then heated to 2,500 DEG F. for five minutes in a neutral atmosphere, quenched in oil or otherwise hardened, and bonded to a support.ALSO:An abrading tool comprises abrasive such as crushed diamonds, sapphires, corundum &c., dispersed throughout at least a portion of a sintered mixture of 75-90 per cent. cobalt and 10-25 per cent. copper, preferably 83.5 per cent. cobalt and 16.5 per cent. copper. In forming the tool, which is of the same general construction as that described in Specification 586,959, particles of metal are comprssed in a space between a central member and sleeve by a plunger under a pressure of 20 tons per sq. in. A mixture of abrasive and metal particles is then placed on top of the compressed metal, which may be dusted with copper, and another plunger, having the desired shape of end surface, compresses the mixture at a pressure of 60 tons per sq. in. The compressed assembly is then heated to 2,500 DEG F. for five minutes in a neutral atmosphere, quenched in oil or otherwise hardened, and bonded to a support.
GB784746A 1944-01-10 1944-01-10 Improvements in or relating to abrading tools Expired GB586960A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB784746A GB586960A (en) 1944-01-10 1944-01-10 Improvements in or relating to abrading tools

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB784746A GB586960A (en) 1944-01-10 1944-01-10 Improvements in or relating to abrading tools

Publications (1)

Publication Number Publication Date
GB586960A true GB586960A (en) 1947-04-09

Family

ID=9840924

Family Applications (1)

Application Number Title Priority Date Filing Date
GB784746A Expired GB586960A (en) 1944-01-10 1944-01-10 Improvements in or relating to abrading tools

Country Status (1)

Country Link
GB (1) GB586960A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2125434A (en) * 1982-06-09 1984-03-07 Nippon Piston Ring Co Ltd Producing a composite sintered article such as a compound valve seat

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2125434A (en) * 1982-06-09 1984-03-07 Nippon Piston Ring Co Ltd Producing a composite sintered article such as a compound valve seat

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