JPS55154525A - Manufacture of directional electrical steel sheet - Google Patents

Manufacture of directional electrical steel sheet

Info

Publication number
JPS55154525A
JPS55154525A JP6349679A JP6349679A JPS55154525A JP S55154525 A JPS55154525 A JP S55154525A JP 6349679 A JP6349679 A JP 6349679A JP 6349679 A JP6349679 A JP 6349679A JP S55154525 A JPS55154525 A JP S55154525A
Authority
JP
Japan
Prior art keywords
steel sheet
sheet
directional electrical
manufacture
electrical steel
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
JP6349679A
Other languages
Japanese (ja)
Other versions
JPS5814852B2 (en
Inventor
Yakichirou Kawaomo
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.)
Nippon Steel Corp
Original Assignee
Nippon Steel Corp
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 Nippon Steel Corp filed Critical Nippon Steel Corp
Priority to JP6349679A priority Critical patent/JPS5814852B2/en
Publication of JPS55154525A publication Critical patent/JPS55154525A/en
Publication of JPS5814852B2 publication Critical patent/JPS5814852B2/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

Abstract

PURPOSE:To make constant normalizing possible in manufacture of directional electrical steel sheet, by working a slab, carbon content of which is lowered extremely at the melting step and which has been hot rolled, to a final sheet thickness by one or two passes of cold rolling, by heating the steel sheet in order to oxidize its surface, then by annealing it with separating agent applied to it. CONSTITUTION:In manufacture of directional electrical steel sheet, the steel is decarburized to 0.0010-0.010% C during melting step with the decarburization annealing process of the cold rolled sheet omitted. The slab of very low carbon content is hot rolled to a steel sheet about 2.4mm. in thickness, and the hot rolled sheet is annealed at 900 deg.C in nitrogen atmosphere. Then the sheet is made into a steel sheet of final thickness by one or two passes of cold rolling, and its surface is oxidized by heating at a temp. not lower than 200 deg.C so as to improve the wettability with annealing separating agent. The steel sheet is cooled and is applied with annealing separating agent contg. MgO as a principal component, then it is subjected to the secondary recrystallization and normalizing, hereby directional electrical steel sheet is manufactured constantly.
JP6349679A 1979-05-23 1979-05-23 Manufacturing method of grain-oriented electrical steel sheet Expired JPS5814852B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP6349679A JPS5814852B2 (en) 1979-05-23 1979-05-23 Manufacturing method of grain-oriented electrical steel sheet

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP6349679A JPS5814852B2 (en) 1979-05-23 1979-05-23 Manufacturing method of grain-oriented electrical steel sheet

Publications (2)

Publication Number Publication Date
JPS55154525A true JPS55154525A (en) 1980-12-02
JPS5814852B2 JPS5814852B2 (en) 1983-03-22

Family

ID=13230903

Family Applications (1)

Application Number Title Priority Date Filing Date
JP6349679A Expired JPS5814852B2 (en) 1979-05-23 1979-05-23 Manufacturing method of grain-oriented electrical steel sheet

Country Status (1)

Country Link
JP (1) JPS5814852B2 (en)

Also Published As

Publication number Publication date
JPS5814852B2 (en) 1983-03-22

Similar Documents

Publication Publication Date Title
JPS55145122A (en) Manufacture of high-tension cold rolled steel sheet excellent in chemical treatment property
KR940018471A (en) Unidirectional electrical steel sheet having extremely low iron loss and manufacturing method thereof
GB2060696A (en) Method for making shadow masks
JPS644429A (en) Manufacture of high-strength cold-rolled steel sheet with high (r) value
JPS5594446A (en) Manufacture of cold rolled steel sheet for ultra deep drawing by continuous annealing
JPS54107415A (en) Cold rolled steel plate with baking hardenability for deep drawing
JPS55154525A (en) Manufacture of directional electrical steel sheet
JPS5629620A (en) Continuous annealing of cold-rolled steel strip in short time
JPS55152129A (en) Preparation of hard tinned steel stock sheet by continuous annealing
KR910018561A (en) Manufacturing method of bidirectional electrical steel sheet with high magnetic flux density
GB1464232A (en) Method of making cold-reduced al-killed steel strip for press- forming by continuous casting and continuous annealing process
GB1057124A (en) Method for producing a cold rolled rimmed steel sheet or strip
JPS5582729A (en) Heat treating method for steel material
JPS6439348A (en) Non-oriented magnetic steel sheet having low iron loss and excellent magnetic flux density and its production
JPS5681627A (en) Production of directional silicon steel plate of superior repetitive bending characteristic
JPS5585630A (en) Annealing method for nondirectional silicon steel hoop
JPS56166334A (en) Manufacture of cold rolled steel plate with heat hardenability for deep drawing
JPS5655520A (en) Production of surface decarbonized high carbon steel strip
KR920012479A (en) Manufacturing method of oriented electrical steel sheet with excellent magnetic properties and glass coating properties
JPS5483620A (en) Manufacture of oriented electrical steel sheet
JPS6473022A (en) Production of semi-processed non-oriented electrical steel sheet having excellent magnetic characteristic
JPS5665931A (en) Manufacture of cold-rolled steel sheet for press formation
BE805243A (en) Cold rolled steel sheet - for coachwork with slow ageing and improved extensibility and shapability by pressing
JPS566708A (en) Gold rolled steel sheet possessing excellent press formability and baking hardenability and its manufacture
SU1435630A1 (en) Method of heat treatment of cold-rolled strip of low-carbon steel