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GB1401545A - Manufacture of thin metal bodies - Google Patents

Manufacture of thin metal bodies

Info

Publication number
GB1401545A
GB1401545A GB2025573A GB4614672A GB1401545A GB 1401545 A GB1401545 A GB 1401545A GB 2025573 A GB2025573 A GB 2025573A GB 4614672 A GB4614672 A GB 4614672A GB 1401545 A GB1401545 A GB 1401545A
Authority
GB
United Kingdom
Prior art keywords
heating
bar
manufacture
dry
temperature
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
GB2025573A
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.)
LAMP METALS Ltd
Original Assignee
LAMP METALS 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 LAMP METALS Ltd filed Critical LAMP METALS Ltd
Priority to GB2025573A priority Critical patent/GB1401545A/en
Publication of GB1401545A publication Critical patent/GB1401545A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01K—ELECTRIC INCANDESCENT LAMPS
    • H01K3/00—Apparatus or processes adapted to the manufacture, installing, removal, or maintenance of incandescent lamps or parts thereof
    • H01K3/02—Manufacture of incandescent bodies
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C1/00—Making non-ferrous alloys
    • C22C1/04—Making non-ferrous alloys by powder metallurgy
    • C22C1/045—Alloys based on refractory metals

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Manufacturing & Machinery (AREA)
  • Powder Metallurgy (AREA)

Abstract

1401545 Powder metallurgy LAMP METALS Ltd 3 Jan 1974 [6 Oct 1972 27 April 1973] 46146/72 and 20255/73 Heading C7D In the manufacture of wire, rod, strip sheet or foil, Mo, W or Mo-W, particles not greater than 10Á in dia are compressed to form a compacted bar which is heated to 1500‹-2700‹C to effect partial sintering, followed by a final sintering operation at a higher temperature e.g. 2100‹-3200‹C in a dry inert atmosphere, e.g. of Ar or He, the sintered bar being finally worked below the recrystallization temperature to the desired form. The first heating may be carried out in dry H 2 , in a vacuum, or in a dry inert gas; in the latter case, the heating is continuous until the final sintering temperature is reached. The Mo and/or W may also contain up to 5% Re, Ru, Ir, Os or Cr and up to 2% of K 2 O, SiO 2 or Al 2 O 3 . The heating is effected by passing a current through the bar.
GB2025573A 1972-10-06 1972-10-06 Manufacture of thin metal bodies Expired GB1401545A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB2025573A GB1401545A (en) 1972-10-06 1972-10-06 Manufacture of thin metal bodies

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB2025573A GB1401545A (en) 1972-10-06 1972-10-06 Manufacture of thin metal bodies
GB2025573 1973-04-27

Publications (1)

Publication Number Publication Date
GB1401545A true GB1401545A (en) 1975-07-16

Family

ID=26254559

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2025573A Expired GB1401545A (en) 1972-10-06 1972-10-06 Manufacture of thin metal bodies

Country Status (1)

Country Link
GB (1) GB1401545A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2378541A3 (en) * 2010-04-15 2013-11-06 Koito Manufacturing Co., Ltd. Arc tube with improved pinch seals
CN107152869A (en) * 2017-06-06 2017-09-12 宝鸡新高真空炉业有限公司 Hydrogen environment, vacuum environment automatically continuously change sintering process and equipment at 2600 DEG C

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2378541A3 (en) * 2010-04-15 2013-11-06 Koito Manufacturing Co., Ltd. Arc tube with improved pinch seals
CN107152869A (en) * 2017-06-06 2017-09-12 宝鸡新高真空炉业有限公司 Hydrogen environment, vacuum environment automatically continuously change sintering process and equipment at 2600 DEG C

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Legal Events

Date Code Title Description
PS Patent sealed [section 19, patents act 1949]
PCNP Patent ceased through non-payment of renewal fee