GB972835A - Grinding tool - Google Patents

Grinding tool

Info

Publication number
GB972835A
GB972835A GB1427061A GB1427061A GB972835A GB 972835 A GB972835 A GB 972835A GB 1427061 A GB1427061 A GB 1427061A GB 1427061 A GB1427061 A GB 1427061A GB 972835 A GB972835 A GB 972835A
Authority
GB
United Kingdom
Prior art keywords
tungsten carbide
silver solder
sintered
layer
cobalt
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
GB1427061A
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.)
Saint Gobain Abrasives Inc
Original Assignee
Norton 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 Norton Co filed Critical Norton Co
Publication of GB972835A publication Critical patent/GB972835A/en
Expired legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C26/00—Alloys containing diamond or cubic or wurtzitic boron nitride, fullerenes or carbon nanotubes
    • 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
    • B24D3/10—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 porous or cellular structure, e.g. for use with diamonds as abrasives
    • 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
    • B24D3/34—Physical features of abrasive bodies, or sheets, e.g. abrasive surfaces of special nature; Abrasive bodies or sheets characterised by their constituents characterised by additives enhancing special physical properties, e.g. wear resistance, electric conductivity, self-cleaning properties
    • B24D3/348—Physical features of abrasive bodies, or sheets, e.g. abrasive surfaces of special nature; Abrasive bodies or sheets characterised by their constituents characterised by additives enhancing special physical properties, e.g. wear resistance, electric conductivity, self-cleaning properties utilised as impregnating agent for porous abrasive bodies

Abstract

A grinding tool comprises diamond particles dispersed in a sintered tungsten carbide cobalt matrix which has an interconnected open volume of 20-50% which pores are filled with a metallic material such as silver solder or a brazing alloy which has a lower melting point than the matrix. The matrix contains at least 10% by weight of tungsten carbide of 0.5-2m size and the diamond is present in 25% by volume of 120 mesh size. Secondary abrasives such as tungsten carbide, titanium carbide, silicon carbide and alumina may also be added and the pore filling material may be an alloy of Ag/Cu/Sn and Cd (silver solder), copper tin alloys, and copper iron manganese alloy. The grinding tool is produced in a preferred method by compacting a layer of an iron bronze powder and a layer of a powder mixture of diamonds and tungsten carbide and cobalt in a mould at 5 tons p.s.c. A layer of powdered silver solder is added to the compact and the composite is pressed at 20 tons p.s.c. preheated at 400-450 DEG C. in nitrogen and then sintered at 800 DEG C. in nitrogen. The sintered compact is then heated to 850 DEG C. to fuse the silver solder. Alternatively the porous sintered diamond tungsten carbide cobalt body may be infiltrated with the silver solder by immersion in a molten bath of the solder.
GB1427061A 1960-04-28 1961-04-20 Grinding tool Expired GB972835A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US2526860A 1960-04-28 1960-04-28

Publications (1)

Publication Number Publication Date
GB972835A true GB972835A (en) 1964-10-21

Family

ID=21825036

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1427061A Expired GB972835A (en) 1960-04-28 1961-04-20 Grinding tool

Country Status (1)

Country Link
GB (1) GB972835A (en)

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2449317A1 (en) * 1973-10-16 1975-04-17 Norton Co REINFORCED RESIN BONDED GRINDING DISC
FR2324412A1 (en) * 1973-05-12 1977-04-15 Krupp Gmbh Polycrystalline hard diamond-contg materials - prepd by sintering diamond and diamond-wetting metal or alloy
EP0264643A2 (en) * 1986-10-17 1988-04-27 Degussa Aktiengesellschaft Method for coating surfaces with hard materials
EP0747168A2 (en) * 1995-06-07 1996-12-11 Ronald Carlysle Wiand Method of spaced distribution for diamond abrasive articles
WO1997043092A1 (en) * 1996-05-13 1997-11-20 Diamant Boart, Societe Anonyme Abrasive tool and method for making same
US5885149A (en) * 1994-11-16 1999-03-23 Gillet; Thierry Homogenous abrasive tool
CN100581736C (en) * 2008-11-25 2010-01-20 北京科技大学 Diamond abrasion block and its preparation method
EP2373595A2 (en) * 2008-12-22 2011-10-12 Element Six (Production) (Pty) Ltd. Ultra hard/hard composite materials
CN112677057A (en) * 2020-12-29 2021-04-20 江苏赛扬精工科技有限责任公司 Metal resin composite binder diamond grinding wheel for PCB micro-drilling grooving and preparation method thereof

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2324412A1 (en) * 1973-05-12 1977-04-15 Krupp Gmbh Polycrystalline hard diamond-contg materials - prepd by sintering diamond and diamond-wetting metal or alloy
DE2449317A1 (en) * 1973-10-16 1975-04-17 Norton Co REINFORCED RESIN BONDED GRINDING DISC
EP0264643A2 (en) * 1986-10-17 1988-04-27 Degussa Aktiengesellschaft Method for coating surfaces with hard materials
EP0264643A3 (en) * 1986-10-17 1990-05-16 Degussa Aktiengesellschaft Method for coating surfaces with hard materials
US5885149A (en) * 1994-11-16 1999-03-23 Gillet; Thierry Homogenous abrasive tool
EP0747168A2 (en) * 1995-06-07 1996-12-11 Ronald Carlysle Wiand Method of spaced distribution for diamond abrasive articles
EP0747168A3 (en) * 1995-06-07 1997-10-08 Wiand Ronald C Method of spaced distribution for diamond abrasive articles
WO1997043092A1 (en) * 1996-05-13 1997-11-20 Diamant Boart, Societe Anonyme Abrasive tool and method for making same
CN100581736C (en) * 2008-11-25 2010-01-20 北京科技大学 Diamond abrasion block and its preparation method
EP2373595A2 (en) * 2008-12-22 2011-10-12 Element Six (Production) (Pty) Ltd. Ultra hard/hard composite materials
CN112677057A (en) * 2020-12-29 2021-04-20 江苏赛扬精工科技有限责任公司 Metal resin composite binder diamond grinding wheel for PCB micro-drilling grooving and preparation method thereof

Similar Documents

Publication Publication Date Title
US3293012A (en) Process of infiltrating diamond particles with metallic binders
US2464517A (en) Method of making porous metallic bodies
US3149411A (en) Composite materials containing cemented carbides
ES351215A1 (en) Method for making a metal bonded diamond abrasive tool
GB945227A (en) Process for making hard surfacing material
US2137201A (en) Abrasive article and its manufacture
RU2011110729A (en) DRILL BIT AND OTHER PRODUCTS CONTAINING CEMENT CARBIDE
US2671955A (en) Composite metal-ceramic body and method of making the same
GB972835A (en) Grinding tool
JPH081521A (en) Tool for processing abrasive grains bound using new metal bond and manufacture thereof
US2210039A (en) Method of making diamond tools
US3255522A (en) Abrasion resistant material bonding process using boron alloys
GB962357A (en) Process of manufacture of an abrasive substance and an abrasive substance obtained by this process
GB1449978A (en) Refractory metal-containing bodies
GB596626A (en) Improvements in or relating to materials for bearing surfaces
GB491659A (en) Improvements in or relating to bonded abrasive articles
US2396015A (en) Method of setting diamonds or other abrasive
US2778757A (en) Carburized tungsten alloy article
JPS6140722B2 (en)
US3638293A (en) High-density tungsten-rhenium-nickel alloys and articles
US3039000A (en) Radiation shield structures and their production
US2854332A (en) Copper base brazing alloys containing boron and iron
GB836749A (en) Improvements in or relating to the production of composite metal
US2998641A (en) Titanium carbide-silver compositions
US3301673A (en) Liquid phase sintering process