GB640681A - Improvements in and relating to resistance welding electrodes - Google Patents

Improvements in and relating to resistance welding electrodes

Info

Publication number
GB640681A
GB640681A GB33457/47A GB3345747A GB640681A GB 640681 A GB640681 A GB 640681A GB 33457/47 A GB33457/47 A GB 33457/47A GB 3345747 A GB3345747 A GB 3345747A GB 640681 A GB640681 A GB 640681A
Authority
GB
United Kingdom
Prior art keywords
copper
hours
resistance welding
relating
lbs
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
GB33457/47A
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 GB640681A publication Critical patent/GB640681A/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
    • B23K35/22—Rods, electrodes, materials, or media, for use in soldering, welding, or cutting characterised by the composition or nature of the material
    • B23K35/222—Non-consumable electrodes

Abstract

640,681. Making welding - electrodes. BRITISH THOMSON-HOUSTON CO., Ltd. Dec. 18, 1947, No. 33457. Convention date, Dec. 20, 1946. [Classes 83 (ii) and 83 (iv)] Powder metallurgy.-A resistance welding electrode is made of a mixture of copper and carbon powders in which the carbon comprises 0.25-0.75 per cent of this mixture by weight. Powdered graphite and copper are mixed in a ball-mill for 6 hours and are then pressed in a steel mould at 59,000 lbs. per square inch and heated in a hydrogen atmosphere at 950‹ C. Alternatively, the copper may be heated for 2-3 hours at 500‹ C. in an hydrogen atmosphere and then mixed with graphite in a ballmill for 10 hours and pressed in a mould at 2500 lbs. per square inch at 1000‹ C. Specification 424,816 is referred to.
GB33457/47A 1946-12-20 1947-12-18 Improvements in and relating to resistance welding electrodes Expired GB640681A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US640681XA 1946-12-20 1946-12-20

Publications (1)

Publication Number Publication Date
GB640681A true GB640681A (en) 1950-07-26

Family

ID=22053361

Family Applications (1)

Application Number Title Priority Date Filing Date
GB33457/47A Expired GB640681A (en) 1946-12-20 1947-12-18 Improvements in and relating to resistance welding electrodes

Country Status (1)

Country Link
GB (1) GB640681A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0273876A1 (en) * 1986-11-26 1988-07-06 Maria Polvara Spot welding electrode and method for making it
CN112357916A (en) * 2020-12-11 2021-02-12 安徽工业大学 Method for improving capacity of graphite electrode material

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0273876A1 (en) * 1986-11-26 1988-07-06 Maria Polvara Spot welding electrode and method for making it
CN112357916A (en) * 2020-12-11 2021-02-12 安徽工业大学 Method for improving capacity of graphite electrode material

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