JPS5550433A - Protective coating material for annealing silicon steel sheet - Google Patents

Protective coating material for annealing silicon steel sheet

Info

Publication number
JPS5550433A
JPS5550433A JP12448478A JP12448478A JPS5550433A JP S5550433 A JPS5550433 A JP S5550433A JP 12448478 A JP12448478 A JP 12448478A JP 12448478 A JP12448478 A JP 12448478A JP S5550433 A JPS5550433 A JP S5550433A
Authority
JP
Japan
Prior art keywords
specific surface
bet specific
surface area
steel sheet
protective coating
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
JP12448478A
Other languages
Japanese (ja)
Other versions
JPS578188B2 (en
Inventor
Shigeo Miyata
Keizo Matsushima
Kazumasa Kanemoto
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.)
Kyowa Chemical Industry Co Ltd
KH Neochem Co Ltd
Original Assignee
Kyowa Chemical Industry Co Ltd
Kyowa Kagaku Kogyo KK
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 Kyowa Chemical Industry Co Ltd, Kyowa Kagaku Kogyo KK filed Critical Kyowa Chemical Industry Co Ltd
Priority to JP12448478A priority Critical patent/JPS5550433A/en
Publication of JPS5550433A publication Critical patent/JPS5550433A/en
Publication of JPS578188B2 publication Critical patent/JPS578188B2/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
    • C21D1/00—General methods or devices for heat treatment, e.g. annealing, hardening, quenching or tempering
    • C21D1/68—Temporary coatings or embedding materials applied before or during heat treatment
    • C21D1/70—Temporary coatings or embedding materials applied before or during heat treatment while heating or quenching

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Thermal Sciences (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Chemical Treatment Of Metals (AREA)
  • Manufacturing Of Steel Electrode Plates (AREA)
  • Heat Treatment Of Sheet Steel (AREA)
  • Soft Magnetic Materials (AREA)

Abstract

PURPOSE:To provide the title material capable of giving a product having superior glass film adherence and magnetic characteristics without producing an uneven strain, an internal strain, etc. by blending magnesium oxides with different BET specific surface areas in a specified ratio. CONSTITUTION:70-90wt% of mangesium oxide with a BET specific surface area of 15-30m<2>/g and 10-30% of magnesium oxide with a BET specific surface area of 1-10m<2>/g are pulverized and blended. These magnesium oxides are obtd. by calcining magnesium hydroxide with a BET specific surface area of 30m<2>/g or less and allowing 15-30 OH groups per 100Angstrom <2> to exist on the surface. By coating the resulting protective coating material on a steel sheet or the like prior to annealing, a high quality product is given having superior glass film adherence and magnetic characteristics without superoxidation, spangling and production of an uneven strain, an internal strain, etc.
JP12448478A 1978-10-09 1978-10-09 Protective coating material for annealing silicon steel sheet Granted JPS5550433A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP12448478A JPS5550433A (en) 1978-10-09 1978-10-09 Protective coating material for annealing silicon steel sheet

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP12448478A JPS5550433A (en) 1978-10-09 1978-10-09 Protective coating material for annealing silicon steel sheet

Publications (2)

Publication Number Publication Date
JPS5550433A true JPS5550433A (en) 1980-04-12
JPS578188B2 JPS578188B2 (en) 1982-02-15

Family

ID=14886650

Family Applications (1)

Application Number Title Priority Date Filing Date
JP12448478A Granted JPS5550433A (en) 1978-10-09 1978-10-09 Protective coating material for annealing silicon steel sheet

Country Status (1)

Country Link
JP (1) JPS5550433A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH07316831A (en) * 1994-05-23 1995-12-05 Kaisui Kagaku Kenkyusho:Kk Ceramic coating film forming agent and its production
CN115989333A (en) * 2020-09-01 2023-04-18 杰富意钢铁株式会社 Method for producing grain-oriented electromagnetic steel sheet

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5929383U (en) * 1982-08-19 1984-02-23 さくら工業株式会社 Loading platform for motorcycles, etc.
JPS6181872A (en) * 1984-09-28 1986-04-25 本田技研工業株式会社 Rear carrier device for motorcycle

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH07316831A (en) * 1994-05-23 1995-12-05 Kaisui Kagaku Kenkyusho:Kk Ceramic coating film forming agent and its production
CN115989333A (en) * 2020-09-01 2023-04-18 杰富意钢铁株式会社 Method for producing grain-oriented electromagnetic steel sheet

Also Published As

Publication number Publication date
JPS578188B2 (en) 1982-02-15

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