GB1078657A - Grain refinement process for copper-bismuth alloys - Google Patents

Grain refinement process for copper-bismuth alloys

Info

Publication number
GB1078657A
GB1078657A GB27740/65A GB2774065A GB1078657A GB 1078657 A GB1078657 A GB 1078657A GB 27740/65 A GB27740/65 A GB 27740/65A GB 2774065 A GB2774065 A GB 2774065A GB 1078657 A GB1078657 A GB 1078657A
Authority
GB
United Kingdom
Prior art keywords
copper
alloy
bismuth
extrusion
grain refinement
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
GB27740/65A
Inventor
Arthur George Knapton
Thomas Raine
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.)
Associated Electrical Industries Ltd
Original Assignee
Associated Electrical Industries 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 Associated Electrical Industries Ltd filed Critical Associated Electrical Industries Ltd
Priority to GB27740/65A priority Critical patent/GB1078657A/en
Priority to US556251A priority patent/US3450573A/en
Priority to DE19661533499 priority patent/DE1533499A1/en
Priority to CH915166A priority patent/CH471898A/en
Priority to BE683302D priority patent/BE683302A/xx
Priority to NL6609015A priority patent/NL6609015A/xx
Priority to FR67410A priority patent/FR1485125A/en
Publication of GB1078657A publication Critical patent/GB1078657A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H1/00—Contacts
    • H01H1/02—Contacts characterised by the material thereof
    • H01H1/021—Composite material
    • H01H1/025—Composite material having copper as the basic material
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C9/00—Alloys based on copper
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H1/00—Contacts
    • H01H1/02—Contacts characterised by the material thereof
    • H01H1/0203—Contacts characterised by the material thereof specially adapted for vacuum switches
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S72/00—Metal deforming
    • Y10S72/70—Deforming specified alloys or uncommon metal or bimetallic work
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T29/00—Metal working
    • Y10T29/49—Method of mechanical manufacture
    • Y10T29/4981—Utilizing transitory attached element or associated separate material
    • Y10T29/49812—Temporary protective coating, impregnation, or cast layer
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T29/00—Metal working
    • Y10T29/49—Method of mechanical manufacture
    • Y10T29/49826—Assembling or joining
    • Y10T29/49885—Assembling or joining with coating before or during assembling
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T29/00—Metal working
    • Y10T29/49—Method of mechanical manufacture
    • Y10T29/4998—Combined manufacture including applying or shaping of fluent material
    • Y10T29/49988—Metal casting

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Composite Materials (AREA)
  • Extrusion Of Metal (AREA)
  • Conductive Materials (AREA)

Abstract

A method of preparing copper-bismuth alloy with a refined grain structure comprises casting an ingot of copper-bismuth alloy, containing 0.05-1% bismuth by weight, and thereafter extruding the alloy at 300 DEG -950 DEG C. Before extrusion, the ingot is machined to produce a billet which may be encased in a copper can, the ends of which are sealed with welded-in copper plugs. The can may be evacuated before being sealed. Extrusion may be through a die of circular or, for producing strip material, rectangular cross-section, after which the copper sheathing is removed by machining. Extrusion ratios of 4:1 and grain sizes of 0.1 mm. diameter and 0.2-0.3 mm. are referred to. In an example extruded at 500 DEG C., the alloy was then annealed at 800 DEG C. for one hour.
GB27740/65A 1965-06-30 1965-06-30 Grain refinement process for copper-bismuth alloys Expired GB1078657A (en)

Priority Applications (7)

Application Number Priority Date Filing Date Title
GB27740/65A GB1078657A (en) 1965-06-30 1965-06-30 Grain refinement process for copper-bismuth alloys
US556251A US3450573A (en) 1965-06-30 1966-06-09 Grain refinement process for copper-bismuth alloys
DE19661533499 DE1533499A1 (en) 1965-06-30 1966-06-23 Process for the production of copper-bismuth alloys
CH915166A CH471898A (en) 1965-06-30 1966-06-24 Process for the production of copper-bismuth alloys
BE683302D BE683302A (en) 1965-06-30 1966-06-28
NL6609015A NL6609015A (en) 1965-06-30 1966-06-29
FR67410A FR1485125A (en) 1965-06-30 1966-06-29 Grain refining process in copper-bismuth alloys

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB27740/65A GB1078657A (en) 1965-06-30 1965-06-30 Grain refinement process for copper-bismuth alloys

Publications (1)

Publication Number Publication Date
GB1078657A true GB1078657A (en) 1967-08-09

Family

ID=10264492

Family Applications (1)

Application Number Title Priority Date Filing Date
GB27740/65A Expired GB1078657A (en) 1965-06-30 1965-06-30 Grain refinement process for copper-bismuth alloys

Country Status (6)

Country Link
US (1) US3450573A (en)
BE (1) BE683302A (en)
CH (1) CH471898A (en)
DE (1) DE1533499A1 (en)
GB (1) GB1078657A (en)
NL (1) NL6609015A (en)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3805000A (en) * 1970-03-23 1974-04-16 Itt Vacuum interrupter and methods of making contacts therefor
DE2906767A1 (en) * 1978-02-22 1979-08-23 Hitachi Ltd METHOD OF MANUFACTURING A VACUUM CIRCUIT BREAKER
US5167726A (en) * 1990-05-15 1992-12-01 At&T Bell Laboratories Machinable lead-free wrought copper-containing alloys
CN114101371B (en) * 2021-11-09 2023-05-30 中铝洛阳铜加工有限公司 Processing method of large-caliber thick-wall copper pipe for annular conduction band

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2246328A (en) * 1939-07-26 1941-06-17 Bell Telephone Labor Inc Asymmetrical conductor and method of making the same
US2379232A (en) * 1943-11-02 1945-06-26 Mallory & Co Inc P R Metallic compositions containing bismuth
NL244627A (en) * 1958-07-24
GB1020914A (en) * 1961-11-10 1966-02-23 Gen Electric Improvements in vacuum circuit interrupter
US3122828A (en) * 1963-01-14 1964-03-03 Special Metals Inc Conversion of heat-sensitive alloys with aid of a thermal barrier

Also Published As

Publication number Publication date
BE683302A (en) 1966-12-01
CH471898A (en) 1969-04-30
US3450573A (en) 1969-06-17
DE1533499A1 (en) 1970-04-09
NL6609015A (en) 1967-01-02

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