GB436430A - Improvements in and relating to the manufacture of abrasive wheels - Google Patents

Improvements in and relating to the manufacture of abrasive wheels

Info

Publication number
GB436430A
GB436430A GB7814/35A GB781435A GB436430A GB 436430 A GB436430 A GB 436430A GB 7814/35 A GB7814/35 A GB 7814/35A GB 781435 A GB781435 A GB 781435A GB 436430 A GB436430 A GB 436430A
Authority
GB
United Kingdom
Prior art keywords
disc
carbon
per cent
molybdenum
diamond
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
GB7814/35A
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.)
British Thomson Houston Co Ltd
Original Assignee
British Thomson Houston Co Ltd
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 British Thomson Houston Co Ltd filed Critical British Thomson Houston Co Ltd
Publication of GB436430A publication Critical patent/GB436430A/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
    • 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

Abstract

436,430. Grinding-wheels. BRITISH THOMSON-HOUSTON CO., Ltd., Crown House, Aldwych, London. March 13, 1935, No. 7814. Convention date, March 17, 1934. [Class 60] [See also Group V] A grinding-wheel comprises a core 5 of molybdenum, or other metal, to which is welded or brazed an abrasive annulus consisting of diamond particles embedded in a cemented carbide composition. The wheel is produced in a mould consisting of carbon blocks 1, 2 shaped to form a cylindrical recess surrounding a carbon block 3, upon which is placed a molybdenum, &c. disc 5 positioned by an extension 8 of a carbon plug 7, the extension passing through a central opening in the disc. The space around the disc is filled with a finely-divided mixture of diamond, cobalt, and tungsten carbide, and pressure is applied by means of a hollow plunger 4 of carbon or of molybdenum with an interposed ring 14 of carbon, the mould being heated to the sintering temperature of the mixture by means of an electric current applied by water-cooled electrodes 10, 11 ; the mixture becomes welded to the disc 5 simultaneously with the sintering. In a modification, for small discs, the core 17 is of the hollow cylindrical shape shown in Fig. 5. The proportion of diamond may be from 10 per cent to 20 per cent by weight of the composition, and the carbide composition may comprise from 3 per cent to 10 per cent of cobalt, the remainder being tungsten carbide, or other compositions may be used. The annulus may be formed separately and brazed to the disc 5. Specifications 349,732 ; 364,718, [Group II], and 419,126 are referred to.
GB7814/35A 1934-03-17 1935-03-13 Improvements in and relating to the manufacture of abrasive wheels Expired GB436430A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US436430XA 1934-03-17 1934-03-17

Publications (1)

Publication Number Publication Date
GB436430A true GB436430A (en) 1935-10-10

Family

ID=21928156

Family Applications (1)

Application Number Title Priority Date Filing Date
GB7814/35A Expired GB436430A (en) 1934-03-17 1935-03-13 Improvements in and relating to the manufacture of abrasive wheels

Country Status (1)

Country Link
GB (1) GB436430A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1243079B (en) * 1960-07-22 1967-06-22 Ind Distributors 1946 Ltd Method of making an abrasive
EP0246118A1 (en) * 1986-05-16 1987-11-19 Societe Industrielle De Combustible Nucleaire Thermally stable abrasive diamond product, and process for making such a product

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1243079B (en) * 1960-07-22 1967-06-22 Ind Distributors 1946 Ltd Method of making an abrasive
EP0246118A1 (en) * 1986-05-16 1987-11-19 Societe Industrielle De Combustible Nucleaire Thermally stable abrasive diamond product, and process for making such a product
FR2598644A1 (en) * 1986-05-16 1987-11-20 Combustible Nucleaire THERMOSTABLE DIAMOND ABRASIVE PRODUCT AND PROCESS FOR PRODUCING SUCH A PRODUCT

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