US1635443A - Manufacture of cables loaded with alloys of high-magnetic permeability - Google Patents

Manufacture of cables loaded with alloys of high-magnetic permeability Download PDF

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Publication number
US1635443A
US1635443A US80100A US8010026A US1635443A US 1635443 A US1635443 A US 1635443A US 80100 A US80100 A US 80100A US 8010026 A US8010026 A US 8010026A US 1635443 A US1635443 A US 1635443A
Authority
US
United States
Prior art keywords
loaded
alloys
conductor
manufacture
heat treatment
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 - Lifetime
Application number
US80100A
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English (en)
Inventor
Smith Willoughby Statham
Garnett Henry Joseph
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Individual
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Individual
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.)
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Publication date
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Application granted granted Critical
Publication of US1635443A publication Critical patent/US1635443A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
    • H01B13/00—Apparatus or processes specially adapted for manufacturing conductors or cables
    • H01B13/28—Applying continuous inductive loading, e.g. Krarup loading
    • H01B13/282—Applying continuous inductive loading, e.g. Krarup loading by winding

Definitions

  • This invention relates to a process by which it is possible to develop high inductances in loaded conductors covered with very tightly wound ribbon. tape or wire.
  • the process of annealing alightly wound loaded conductor comprises a comparatively low temperature heat treatment, followed. after cooling, by a comparatively high temperature heat treatment.
  • the purpose of the preliminary heat treatment is to relieve the tension and remove substantially all strain in the winding, so that the loading material is brought to a condition adapted for its magnetic proper ties to be more fully developed by the subse uent heat treatment proper.
  • a temperature in the region 500 to 650 C. is sufiicient for the preliminary heat treatment in the case of loading alloys commonly employed, whilst the temperature of the second heat treatment lies substantially between 880 and 920 according to the particular alloy employed and the inductance required. After each treatment the conductor is cooled at a moderate spee'dto room temperature.
  • the heat treatments are preferably eflectedvin a current of an inert gas, such as nitrogen, and the conductor is not allowed to come into contact with air until cold.
  • the annealing is preferably carried out in a tube within an electric furnace of the metallic resistor type.
  • the duration of annealing is governed by the size of the conductor, and controlled by the speed of its forward travel.
  • each cooling preferably approximates to the duration of heating.
  • a'cooling tube is formed as a continuation of the annealing. tube.
  • the cooling tube is provided with a water-circulating jacket so that the conductor is cooled to room temperature in a tube of approximately the same length as the furnace tube.
  • a copper conductor Weighing'350 lbs..

Landscapes

  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Soft Magnetic Materials (AREA)
  • Superconductors And Manufacturing Methods Therefor (AREA)
US80100A 1925-06-17 1926-01-08 Manufacture of cables loaded with alloys of high-magnetic permeability Expired - Lifetime US1635443A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB1635443X 1925-06-17

Publications (1)

Publication Number Publication Date
US1635443A true US1635443A (en) 1927-07-12

Family

ID=10887351

Family Applications (1)

Application Number Title Priority Date Filing Date
US80100A Expired - Lifetime US1635443A (en) 1925-06-17 1926-01-08 Manufacture of cables loaded with alloys of high-magnetic permeability

Country Status (3)

Country Link
US (1) US1635443A (pl)
DE (1) DE503482C (pl)
NL (1) NL18165C (pl)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2497667A (en) * 1946-02-08 1950-02-14 Rolls Royce Heat-treatment of nickel-chromium alloys
US3717745A (en) * 1970-02-25 1973-02-20 Outokumpu Oy Continuous resistance annealing method for wires

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2497667A (en) * 1946-02-08 1950-02-14 Rolls Royce Heat-treatment of nickel-chromium alloys
US3717745A (en) * 1970-02-25 1973-02-20 Outokumpu Oy Continuous resistance annealing method for wires

Also Published As

Publication number Publication date
NL18165C (pl)
DE503482C (de) 1930-07-23

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