GB377969A - Improvements in and relating to magnetic alloys - Google Patents

Improvements in and relating to magnetic alloys

Info

Publication number
GB377969A
GB377969A GB12773/31A GB1277331A GB377969A GB 377969 A GB377969 A GB 377969A GB 12773/31 A GB12773/31 A GB 12773/31A GB 1277331 A GB1277331 A GB 1277331A GB 377969 A GB377969 A GB 377969A
Authority
GB
United Kingdom
Prior art keywords
per cent
alloy
magnetic alloys
relating
thickness
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
GB12773/31A
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.)
General Electric Co
Original Assignee
General Electric Co
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 General Electric Co filed Critical General Electric Co
Publication of GB377969A publication Critical patent/GB377969A/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
    • C21D8/1216—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
    • C21D8/1222—Hot rolling
    • 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
    • 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
    • C21D8/1272—Final recrystallisation annealing

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Thermal Sciences (AREA)
  • Manufacturing & Machinery (AREA)
  • Electromagnetism (AREA)
  • Mechanical Engineering (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Hard Magnetic Materials (AREA)
  • Soft Magnetic Materials (AREA)

Abstract

In producing magnetic alloys suitable for use in telephony, the material is given a final rolling treatment in which it is reduced in thickness by not more than 40-50 per cent, the rolling being performed within a temperature range in which recrystallization is incomplete, this range being from 600-900 DEG C. for a 50 per cent. Fe-Ni alloy. In an alternative method the alloy is brought to its ultimate formation by cold working so as to reduce its thickness by not more than 40-50 per cent and is then subjected to a heat treatment of substantially one hour's duration within the temperature range of incomplete recrystallization, this being 600-800 DEG C. for a 50 per cent Fe-Ni alloy.
GB12773/31A 1930-04-30 1931-04-30 Improvements in and relating to magnetic alloys Expired GB377969A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE377969X 1930-04-30

Publications (1)

Publication Number Publication Date
GB377969A true GB377969A (en) 1932-08-02

Family

ID=6344495

Family Applications (1)

Application Number Title Priority Date Filing Date
GB12773/31A Expired GB377969A (en) 1930-04-30 1931-04-30 Improvements in and relating to magnetic alloys

Country Status (1)

Country Link
GB (1) GB377969A (en)

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