GB408949A - Improvements in or relating to the treatment of iron-silicon alloys and the improved metal resulting therefrom - Google Patents

Improvements in or relating to the treatment of iron-silicon alloys and the improved metal resulting therefrom

Info

Publication number
GB408949A
GB408949A GB1955532A GB1955532A GB408949A GB 408949 A GB408949 A GB 408949A GB 1955532 A GB1955532 A GB 1955532A GB 1955532 A GB1955532 A GB 1955532A GB 408949 A GB408949 A GB 408949A
Authority
GB
United Kingdom
Prior art keywords
per cent
silicon
iron
relating
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
Application number
GB1955532A
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.)
Individual
Original Assignee
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.)
Filing date
Publication date
Application filed by Individual filed Critical Individual
Priority to GB1955532A priority Critical patent/GB408949A/en
Publication of GB408949A publication Critical patent/GB408949A/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
    • C21D1/00—General methods or devices for heat treatment, e.g. annealing, hardening, quenching or tempering
    • C21D1/78—Combined heat-treatments not provided for above

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (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)
  • Soft Magnetic Materials (AREA)

Abstract

In a method of treating iron-silicon alloys, especially silicon steels containing 1-6 per cent of silicon, to improve their electrical properties, the alloys are hot rolled, annealed, cold rolled or worked to produce an elongation of at least 1 per cent and/or to introduce strain into the alloy and then reannealed at 1600 DEG F. or higher. The initial stage of the hot rolling is carried out at approximately 1500 DEG F. and the metal is subjected to a number of passes through hot rolls the last pass being made at a temperature just below the critical temperature. The cold working or rolling is also carried to such an extent that the magnetic permeability of the alloy is increased preferably to at least 10 per cent the watt loss being also decreased at least 15 per cent. The silicon steel sheets may be used for the manufacture of transformer and armature cores.
GB1955532A 1932-07-11 1932-07-11 Improvements in or relating to the treatment of iron-silicon alloys and the improved metal resulting therefrom Expired GB408949A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB1955532A GB408949A (en) 1932-07-11 1932-07-11 Improvements in or relating to the treatment of iron-silicon alloys and the improved metal resulting therefrom

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB1955532A GB408949A (en) 1932-07-11 1932-07-11 Improvements in or relating to the treatment of iron-silicon alloys and the improved metal resulting therefrom

Publications (1)

Publication Number Publication Date
GB408949A true GB408949A (en) 1934-04-11

Family

ID=10131322

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1955532A Expired GB408949A (en) 1932-07-11 1932-07-11 Improvements in or relating to the treatment of iron-silicon alloys and the improved metal resulting therefrom

Country Status (1)

Country Link
GB (1) GB408949A (en)

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