CA2228846A1 - Raw material for magnetic shield, production method thereof, and color television receiver - Google Patents

Raw material for magnetic shield, production method thereof, and color television receiver

Info

Publication number
CA2228846A1
CA2228846A1 CA002228846A CA2228846A CA2228846A1 CA 2228846 A1 CA2228846 A1 CA 2228846A1 CA 002228846 A CA002228846 A CA 002228846A CA 2228846 A CA2228846 A CA 2228846A CA 2228846 A1 CA2228846 A1 CA 2228846A1
Authority
CA
Canada
Prior art keywords
magnetic shield
weight
equal
less
raw material
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.)
Granted
Application number
CA002228846A
Other languages
French (fr)
Other versions
CA2228846C (en
Inventor
Hironao Okayama
Akira Ikeda
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.)
Toyo Kohan Co Ltd
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 claimed from PCT/JP1996/002217 external-priority patent/WO1997006285A1/en
Publication of CA2228846A1 publication Critical patent/CA2228846A1/en
Application granted granted Critical
Publication of CA2228846C publication Critical patent/CA2228846C/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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
    • C22C38/16—Ferrous alloys, e.g. steel alloys containing copper
    • 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
    • C22C38/001—Ferrous alloys, e.g. steel alloys containing N
    • 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
    • C22C38/004—Very low carbon steels, i.e. having a carbon content of less than 0,01%
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J29/00—Details of cathode-ray tubes or of electron-beam tubes of the types covered by group H01J31/00
    • H01J29/02—Electrodes; Screens; Mounting, supporting, spacing or insulating thereof
    • H01J29/06—Screens for shielding; Masks interposed in the electron stream
    • 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
    • C21D6/00—Heat treatment of ferrous alloys
    • 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
    • C21D8/02—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips
    • C21D8/0247—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips characterised by the heat treatment
    • C21D8/0273—Final recrystallisation annealing
    • 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)
  • Materials Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Shielding Devices Or Components To Electric Or Magnetic Fields (AREA)
  • Manufacturing Of Steel Electrode Plates (AREA)
  • Electrodes For Cathode-Ray Tubes (AREA)
  • Soft Magnetic Materials (AREA)

Abstract

Magnetic shield materials having excellent inner magnetic shield characteristics and an excellent handling strength, method for producing thereof and color picture tubes produced by incorporating the materials are provided. The magnetic shield materials are produced by subjecting hot rolled low carbon steel strips essentially consisting of equal to or less than 0.006 weight % of C, equal to or less than 0.002 weight % of N, equal to or less than 0.5 weight % of Mn, 0.1 -1.5 weight % of Cu, Fe as a balance and unavoidable impurities to a cold rolling and subsequently annealing the cold rolled steel strips at a temperature of 550 - 850°C.
CA002228846A 1995-08-07 1996-08-06 Raw material for magnetic shield, production method thereof, and color television receiver Expired - Fee Related CA2228846C (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
JP7/219478 1995-08-07
JP21947895 1995-08-07
PCT/JP1996/002217 WO1997006285A1 (en) 1995-08-07 1996-08-06 Raw material for magnetic shield, production method thereof, and color television receiver

Publications (2)

Publication Number Publication Date
CA2228846A1 true CA2228846A1 (en) 1997-02-20
CA2228846C CA2228846C (en) 2006-12-12

Family

ID=37561091

Family Applications (1)

Application Number Title Priority Date Filing Date
CA002228846A Expired - Fee Related CA2228846C (en) 1995-08-07 1996-08-06 Raw material for magnetic shield, production method thereof, and color television receiver

Country Status (1)

Country Link
CA (1) CA2228846C (en)

Also Published As

Publication number Publication date
CA2228846C (en) 2006-12-12

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Legal Events

Date Code Title Description
EEER Examination request
MKLA Lapsed