JPS55110731A - Formation of electrically insulating film excellent in punchability and adhesion after stress-relief annealing in air on electrical steel plate - Google Patents

Formation of electrically insulating film excellent in punchability and adhesion after stress-relief annealing in air on electrical steel plate

Info

Publication number
JPS55110731A
JPS55110731A JP1650779A JP1650779A JPS55110731A JP S55110731 A JPS55110731 A JP S55110731A JP 1650779 A JP1650779 A JP 1650779A JP 1650779 A JP1650779 A JP 1650779A JP S55110731 A JPS55110731 A JP S55110731A
Authority
JP
Japan
Prior art keywords
steel plate
insulating film
electrically insulating
air
adhesion
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.)
Pending
Application number
JP1650779A
Other languages
Japanese (ja)
Inventor
Toshikuni Tanda
Tomoyuki Ichi
Nobuyuki Morito
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.)
JFE Steel Corp
Original Assignee
Kawasaki 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 Kawasaki Steel Corp filed Critical Kawasaki Steel Corp
Priority to JP1650779A priority Critical patent/JPS55110731A/en
Priority to SE8001146A priority patent/SE451603B/en
Priority to DE19803005538 priority patent/DE3005538C2/en
Priority to FR8003292A priority patent/FR2449134A1/en
Publication of JPS55110731A publication Critical patent/JPS55110731A/en
Pending legal-status Critical Current

Links

Classifications

    • 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
    • H01F1/147—Alloys characterised by their composition
    • H01F1/14766—Fe-Si based alloys
    • H01F1/14775—Fe-Si based alloys in the form of sheets
    • H01F1/14783—Fe-Si based alloys in the form of sheets with insulating coating
    • 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
    • C—CHEMISTRY; METALLURGY
    • C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
    • C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
    • C23C22/00—Chemical surface treatment of metallic material by reaction of the surface with a reactive liquid, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals
    • C23C22/73—Chemical surface treatment of metallic material by reaction of the surface with a reactive liquid, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals characterised by the process
    • C23C22/74—Chemical surface treatment of metallic material by reaction of the surface with a reactive liquid, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals characterised by the process for obtaining burned-in conversion coatings

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Organic Chemistry (AREA)
  • Metallurgy (AREA)
  • Mechanical Engineering (AREA)
  • General Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Dispersion Chemistry (AREA)
  • Power Engineering (AREA)
  • Electromagnetism (AREA)
  • Thermal Sciences (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Chemical Treatment Of Metals (AREA)
  • Manufacturing Of Steel Electrode Plates (AREA)
  • Heat Treatment Of Sheet Steel (AREA)

Abstract

PURPOSE: To form electrically insulating film having excellent punchability and after stress-relief annealing adhesion or electrical steel plate by the procedure in which a treating solution containing CrO3, various metal ions, boron acid, a resin emulsion etc. is coated on the surface of electrical steel plate, and then the steel plate is annealed in the air.
CONSTITUTION: The 150pts.wt. of water is dissolved with 100pts.wt. of CrO3, 13W16pts.wt. (as Mg ion) of MgO, 1.5W4.5pts.wt. of at least one of Ca ion and Sr ion in the form of CaCl2 and Sr(NO3)2, 25W45pts.wt. of boric acid, and 5W 150pts.wt. (as solid) of an acrylic resin emulsion. Then, the solution thus obtained is coated on the surface of a steel plate and heated for baking in the air, and then the steel plate is subjected to a strain-relief annealing. Thus, electrically insulating film having excellent adhesion can be formed on steel plate after punching and annealing and excellent iron plate for the core of electric machine can be obtained.
COPYRIGHT: (C)1980,JPO&Japio
JP1650779A 1979-02-15 1979-02-15 Formation of electrically insulating film excellent in punchability and adhesion after stress-relief annealing in air on electrical steel plate Pending JPS55110731A (en)

Priority Applications (4)

Application Number Priority Date Filing Date Title
JP1650779A JPS55110731A (en) 1979-02-15 1979-02-15 Formation of electrically insulating film excellent in punchability and adhesion after stress-relief annealing in air on electrical steel plate
SE8001146A SE451603B (en) 1979-02-15 1980-02-14 SET ON THE SURFACE OF AN ELECTRIC STEEL PLATE PICTURE AN ELECTRICALLY INSULATIVE MOVIE
DE19803005538 DE3005538C2 (en) 1979-02-15 1980-02-14 Process for forming an electrically insulating coating on electrical steel sheets
FR8003292A FR2449134A1 (en) 1979-02-15 1980-02-14 Insulating coatings for electro-steel sheet - with good adhesion and stamping properties after stress relaxation by heating in air

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP1650779A JPS55110731A (en) 1979-02-15 1979-02-15 Formation of electrically insulating film excellent in punchability and adhesion after stress-relief annealing in air on electrical steel plate

Publications (1)

Publication Number Publication Date
JPS55110731A true JPS55110731A (en) 1980-08-26

Family

ID=11918179

Family Applications (1)

Application Number Title Priority Date Filing Date
JP1650779A Pending JPS55110731A (en) 1979-02-15 1979-02-15 Formation of electrically insulating film excellent in punchability and adhesion after stress-relief annealing in air on electrical steel plate

Country Status (4)

Country Link
JP (1) JPS55110731A (en)
DE (1) DE3005538C2 (en)
FR (1) FR2449134A1 (en)
SE (1) SE451603B (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2728836B2 (en) * 1993-02-08 1998-03-18 川崎製鉄株式会社 Electrical steel sheet with electrical insulation coating with excellent weldability

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5219534B2 (en) * 1972-09-29 1977-05-28
JPS561805B2 (en) * 1974-10-15 1981-01-16

Also Published As

Publication number Publication date
FR2449134B1 (en) 1984-01-13
DE3005538C2 (en) 1986-09-25
SE8001146L (en) 1980-08-16
DE3005538A1 (en) 1980-08-21
FR2449134A1 (en) 1980-09-12
SE451603B (en) 1987-10-19

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