GB977731A - Welded composite article - Google Patents

Welded composite article

Info

Publication number
GB977731A
GB977731A GB67460A GB67460A GB977731A GB 977731 A GB977731 A GB 977731A GB 67460 A GB67460 A GB 67460A GB 67460 A GB67460 A GB 67460A GB 977731 A GB977731 A GB 977731A
Authority
GB
United Kingdom
Prior art keywords
stainless steel
nickel
welded
cobalt
stem
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
GB67460A
Inventor
Allen Edward Scott-Smith
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.)
Amalgamated Dental Co Ltd
Original Assignee
Amalgamated Dental 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 Amalgamated Dental Co Ltd filed Critical Amalgamated Dental Co Ltd
Priority to GB67460A priority Critical patent/GB977731A/en
Priority to CH14161A priority patent/CH400731A/en
Publication of GB977731A publication Critical patent/GB977731A/en
Expired legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
    • B23K35/00—Rods, electrodes, materials, or media, for use in soldering, welding, or cutting
    • B23K35/001—Interlayers, transition pieces for metallurgical bonding of workpieces
    • B23K35/004—Interlayers, transition pieces for metallurgical bonding of workpieces at least one of the workpieces being of a metal of the iron group
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
    • B23K11/00—Resistance welding; Severing by resistance heating
    • B23K11/16—Resistance welding; Severing by resistance heating taking account of the properties of the material to be welded

Abstract

977,731. Welding by pressure. AMALGAMATED DENTAL CO. Ltd. Jan. 3, 1961 [Jan. 7, 1960], No. 674/60. Heading B3R. In welding hardenable stainless steel to cemented tungsten carbide or to austenitic stainless steel, a third metal, capable of wetting the hardenable stainless steel, is inserted between the components to be welded. The components are welded directly together without being bridged by a third metal as in brazing. A stem 3 of hardenable stainless steel (12-18% Cr, 0.1-0.8% C) is carried in a water-cooled copper electrode 1 and a sintered tungsten carbide cylinder (not shown), with 6-15% cobalt, of the same diameter is located in a nickel-chromium alloy collet 6 on a disc of platinum on a copper electrode 7. The upper electrode loaded by a weight 8 is lowered and a shim of 33% Cu-67% Ni alloy, larger in diameter than the stem, is placed between the stem and cylinder and a flux, e.g. a fluoride based flux incorporating nickel powder, is placed between the shim and the cylinder. A control apparatus causes preheating oxyacetylene flames to be applied to the work to preheat to 600‹ C and then the application of current to the electrodes to effect a resistance weld. The parts are then allowed to cool in the reducing flames. The tungsten carbide may be a dental bur tip welded to a stainless steel shank and tips may be welded simultaneously to both ends of a shank. Other metals for insertion between the parts are copper 50-80% nickel alloys; platinum; platinumrhodium alloy; pure iron; high speed steel; cobalt-tungsten-iron alloys; nickel; cobalt; copper; nickel-iron alloys and nickel-chromium alloys, some being in foil or powder form. The hardenable stainless steel may comprise 10-18% Cr and less than 1% Ni.
GB67460A 1960-01-07 1960-01-07 Welded composite article Expired GB977731A (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
GB67460A GB977731A (en) 1960-01-07 1960-01-07 Welded composite article
CH14161A CH400731A (en) 1960-01-07 1961-01-06 Welding process

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB67460A GB977731A (en) 1960-01-07 1960-01-07 Welded composite article

Publications (1)

Publication Number Publication Date
GB977731A true GB977731A (en) 1964-12-09

Family

ID=9708541

Family Applications (1)

Application Number Title Priority Date Filing Date
GB67460A Expired GB977731A (en) 1960-01-07 1960-01-07 Welded composite article

Country Status (2)

Country Link
CH (1) CH400731A (en)
GB (1) GB977731A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2009020901A1 (en) * 2007-08-03 2009-02-12 Baker Hughes Incorporated Earth-boring tools having particle-matrix composite bodies, methods for welding particle-matrix composite bodies and methods for repairing particle-matrix composite bodies

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2009020901A1 (en) * 2007-08-03 2009-02-12 Baker Hughes Incorporated Earth-boring tools having particle-matrix composite bodies, methods for welding particle-matrix composite bodies and methods for repairing particle-matrix composite bodies
US9662733B2 (en) 2007-08-03 2017-05-30 Baker Hughes Incorporated Methods for reparing particle-matrix composite bodies
US10493550B2 (en) 2007-08-03 2019-12-03 Baker Hughes, A Ge Company, Llc Earth-boring tools having particle-matrix composite bodies and methods for welding particle-matrix composite bodies
US11370049B2 (en) 2007-08-03 2022-06-28 Baker Hughes Holdings Llc Earth-boring tools having particle-matrix composite bodies and methods for welding particle-matrix composite bodies

Also Published As

Publication number Publication date
CH400731A (en) 1965-10-15

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