IT1042508B - Silicon electrical steels contg. boron and nitrogen - giving high permeability and low power loss - Google Patents

Silicon electrical steels contg. boron and nitrogen - giving high permeability and low power loss

Info

Publication number
IT1042508B
IT1042508B IT2718175A IT2718175A IT1042508B IT 1042508 B IT1042508 B IT 1042508B IT 2718175 A IT2718175 A IT 2718175A IT 2718175 A IT2718175 A IT 2718175A IT 1042508 B IT1042508 B IT 1042508B
Authority
IT
Italy
Prior art keywords
ppm
boron
nitrogen
low power
power loss
Prior art date
Application number
IT2718175A
Other languages
Italian (it)
Original Assignee
Gen Electric
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
Priority claimed from US05/585,093 external-priority patent/US3957546A/en
Application filed by Gen Electric filed Critical Gen Electric
Application granted granted Critical
Publication of IT1042508B publication Critical patent/IT1042508B/en

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C38/00—Ferrous alloys, e.g. steel alloys
    • C22C38/02—Ferrous alloys, e.g. steel alloys containing silicon
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F1/00—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties
    • H01F1/01—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials
    • H01F1/03—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials characterised by their coercivity
    • H01F1/12—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials characterised by their coercivity of soft-magnetic materials
    • H01F1/14—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials characterised by their coercivity of soft-magnetic materials metals or alloys
    • H01F1/16—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials characterised by their coercivity of soft-magnetic materials metals or alloys in the form of sheets
    • H01F1/18—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials characterised by their coercivity of soft-magnetic materials metals or alloys in the form of sheets with insulating coating

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Dispersion Chemistry (AREA)
  • Power Engineering (AREA)
  • Soft Magnetic Materials (AREA)

Abstract

Grain-oriented iron-silicon foil is mfd. as hot-rolled strip contg. 2.2-4.5% Si, 3-35 ppm. boron, 30-70 ppm. N2 in the ratio of 1-15 pts. per pt. of boron, and Mn and S with ratio Mn:S below 1.8; the strip is heated to obtain at least partial recrystallisation and then cold rolled to final size without reheating and finally given a heat-treatment to develop a sec. recrystallisation texture (110) 001 . The steel pref. contains 0.01% max. S, 0.01% max. Mn, 5-25 ppm. B; or 0.03% S, 0.03% Mn, 5-15 ppm. B; or 0.04% S, 0.04% Mn, 5-15 ppm. B; or 0.05% S, 0.05% Mn, and 5-10 ppm. B. Highly oriented silicon electrical steel is obtd. with high magnetic permeability in the rolling direction, using a process which has fewer stages and is less expensive than conventional processes.
IT2718175A 1975-06-09 1975-09-12 Silicon electrical steels contg. boron and nitrogen - giving high permeability and low power loss IT1042508B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US05/585,093 US3957546A (en) 1974-09-16 1975-06-09 Method of producing oriented silicon-iron sheet material with boron and nitrogen additions

Publications (1)

Publication Number Publication Date
IT1042508B true IT1042508B (en) 1980-01-30

Family

ID=24340020

Family Applications (1)

Application Number Title Priority Date Filing Date
IT2718175A IT1042508B (en) 1975-06-09 1975-09-12 Silicon electrical steels contg. boron and nitrogen - giving high permeability and low power loss

Country Status (2)

Country Link
BE (1) BE832353A (en)
IT (1) IT1042508B (en)

Also Published As

Publication number Publication date
BE832353A (en) 1975-12-01

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