JPS55107730A - Manufacture of shadow mask - Google Patents

Manufacture of shadow mask

Info

Publication number
JPS55107730A
JPS55107730A JP688880A JP688880A JPS55107730A JP S55107730 A JPS55107730 A JP S55107730A JP 688880 A JP688880 A JP 688880A JP 688880 A JP688880 A JP 688880A JP S55107730 A JPS55107730 A JP S55107730A
Authority
JP
Japan
Prior art keywords
shadow mask
mask
steel sheet
annealing step
rolled
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
JP688880A
Other languages
Japanese (ja)
Other versions
JPS56903B2 (en
Inventor
Junichi Yamada
Etsuzo Terajima
Akira Takai
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.)
Hitachi Ltd
Original Assignee
Hitachi Ltd
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 Hitachi Ltd filed Critical Hitachi Ltd
Priority to JP688880A priority Critical patent/JPS55107730A/en
Publication of JPS55107730A publication Critical patent/JPS55107730A/en
Publication of JPS56903B2 publication Critical patent/JPS56903B2/ja
Granted 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
    • C21D8/02—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips
    • 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
    • C21D9/00—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor
    • C21D9/46—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor for sheet metals

Abstract

PURPOSE:To improve the quality of a shadow mask, by, in manufacture of the shadow mask of a color TV picture tube, adding an annealing step and a skin pass step between the rolling and the cutting steps of the steel sheet for the shadow mask, and by omitting the annealing step for form-arranging process for the shadow mask. CONSTITUTION:A steel sheet 0.30mm in thickness for a shadow mask is rolled to a thickiness of 0.18mm, annealed at a temp. 550-750 deg.C, skin-pass-rolled at a reduction ratio 0.5-5%, cut to a breadth of about 550mm, then it is wound into a roll shape. The steel steet is then photo-etched ordinarily to make holes of a prescribed size, thereby manufacturing an original sheet for the shadow mask. In form-arranging process for the mask, annealing step is emitted, and the following roller leveler step is put into practice at need, manufacturing finally a shadow mask. The ferritic grain size of the shadow mask steel sheet 7-8 according to JIS G0662. This method causes no disorder to the pitch of mask hole arrangement or no scattering of the hole dimension, thereby yielding a shadow mask having excellent performance.
JP688880A 1980-01-25 1980-01-25 Manufacture of shadow mask Granted JPS55107730A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP688880A JPS55107730A (en) 1980-01-25 1980-01-25 Manufacture of shadow mask

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP688880A JPS55107730A (en) 1980-01-25 1980-01-25 Manufacture of shadow mask

Related Parent Applications (1)

Application Number Title Priority Date Filing Date
JP8842573A Division JPS5524227B2 (en) 1973-08-08 1973-08-08

Publications (2)

Publication Number Publication Date
JPS55107730A true JPS55107730A (en) 1980-08-19
JPS56903B2 JPS56903B2 (en) 1981-01-10

Family

ID=11650765

Family Applications (1)

Application Number Title Priority Date Filing Date
JP688880A Granted JPS55107730A (en) 1980-01-25 1980-01-25 Manufacture of shadow mask

Country Status (1)

Country Link
JP (1) JPS55107730A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5927435A (en) * 1982-08-05 1984-02-13 Toshiba Corp Color picture tube

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0222156U (en) * 1988-07-29 1990-02-14
JPH0398661U (en) * 1990-01-27 1991-10-14

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5927435A (en) * 1982-08-05 1984-02-13 Toshiba Corp Color picture tube

Also Published As

Publication number Publication date
JPS56903B2 (en) 1981-01-10

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