GB463901A - Improvements in and relating to the manufacture of magnetic materials - Google Patents

Improvements in and relating to the manufacture of magnetic materials

Info

Publication number
GB463901A
GB463901A GB10096/36A GB1009636A GB463901A GB 463901 A GB463901 A GB 463901A GB 10096/36 A GB10096/36 A GB 10096/36A GB 1009636 A GB1009636 A GB 1009636A GB 463901 A GB463901 A GB 463901A
Authority
GB
United Kingdom
Prior art keywords
per cent
elongation
manufacture
magnetic materials
annealing
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
GB10096/36A
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.)
Vacuumschmelze GmbH and Co KG
Original Assignee
Heraeus Vacuumschmelze AG
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 Heraeus Vacuumschmelze AG filed Critical Heraeus Vacuumschmelze AG
Publication of GB463901A publication Critical patent/GB463901A/en
Expired legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
    • C21D8/00—Modifying the physical properties by deformation combined with, or followed by, heat treatment
    • C21D8/12—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of articles with special electromagnetic properties
    • C21D8/1244—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of articles with special electromagnetic properties the heat treatment(s) being of interest
    • C21D8/1266—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of articles with special electromagnetic properties the heat treatment(s) being of interest between cold rolling steps
    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
    • C21D8/00—Modifying the physical properties by deformation combined with, or followed by, heat treatment
    • C21D8/12—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of articles with special electromagnetic properties
    • C21D8/1216—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of articles with special electromagnetic properties the working step(s) being of interest
    • C21D8/1233—Cold rolling

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Manufacturing & Machinery (AREA)
  • Thermal Sciences (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Mechanical Engineering (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Manufacturing Of Steel Electrode Plates (AREA)

Abstract

In the manufacture of magnetic materials having a high initial permeability and composed of alloys having as the main constituents 35-50 per cent of nickel, 65-40 per cent of iron and with or without up to 16 per cent of other metals such as manganese, titanium, copper, or aluminium, the material is cold worked to produce an elongation considerably exceeding 100 per cent, is then annealed at 900-1200 DEG C., and is finally cold worked to produce an elongation less than the first elongation. The cold working may be effected by rolling, and the annealing time may be less than 1 minute or not more than 30 minutes, the temperature and time given in an example being 1100 DEG C. and 10 minutes. The annealing may be effected in an annealing furnace whereby the material is cooled rapidly. Specifications 363,697, [Group XXXVI], 366,523, 448,046, and 455,268, [all in Group XXII], are referred to.
GB10096/36A 1935-04-08 1936-04-06 Improvements in and relating to the manufacture of magnetic materials Expired GB463901A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE463901X 1935-04-08

Publications (1)

Publication Number Publication Date
GB463901A true GB463901A (en) 1937-04-08

Family

ID=6540182

Family Applications (1)

Application Number Title Priority Date Filing Date
GB10096/36A Expired GB463901A (en) 1935-04-08 1936-04-06 Improvements in and relating to the manufacture of magnetic materials

Country Status (1)

Country Link
GB (1) GB463901A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2489520A (en) * 1947-08-07 1949-11-29 Armour Res Found Method of making magnetic impulse record members
GB2117399A (en) * 1982-01-25 1983-10-12 Nisshin Steel Co Ltd Low thermal expansion alloys

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2489520A (en) * 1947-08-07 1949-11-29 Armour Res Found Method of making magnetic impulse record members
GB2117399A (en) * 1982-01-25 1983-10-12 Nisshin Steel Co Ltd Low thermal expansion alloys

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