GB1077226A - Improvements to the coating of metals - Google Patents

Improvements to the coating of metals

Info

Publication number
GB1077226A
GB1077226A GB34590/65A GB3459065A GB1077226A GB 1077226 A GB1077226 A GB 1077226A GB 34590/65 A GB34590/65 A GB 34590/65A GB 3459065 A GB3459065 A GB 3459065A GB 1077226 A GB1077226 A GB 1077226A
Authority
GB
United Kingdom
Prior art keywords
compounds
strip
hydroxides
oxides
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.)
Expired
Application number
GB34590/65A
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.)
Pyrene Co Ltd
Original Assignee
Pyrene Co 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 Pyrene Co Ltd filed Critical Pyrene Co Ltd
Publication of GB1077226A publication Critical patent/GB1077226A/en
Expired legal-status Critical Current

Links

Classifications

    • 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
    • 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
    • C23C22/05—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 using aqueous solutions
    • C23C22/06—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 using aqueous solutions using aqueous acidic solutions with pH less than 6
    • C23C22/24—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 using aqueous solutions using aqueous acidic solutions with pH less than 6 containing hexavalent chromium compounds
    • C23C22/30—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 using aqueous solutions using aqueous acidic solutions with pH less than 6 containing hexavalent chromium compounds containing also trivalent chromium
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
    • H01B3/00—Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties
    • H01B3/002—Inhomogeneous material in general
    • 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

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Dispersion Chemistry (AREA)
  • Electromagnetism (AREA)
  • Power Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Chemical Treatment Of Metals (AREA)

Abstract

An electrically insulating coating is formed on a metal e.g steel strip by applying and curing an aqueous composition comprising Si and Cr compounds, an organic reducing agent and metals of groups 2, 3b, 4A, 5A, 6A, 7A or 8 but no phosphate ion. The coating is cured at 90-595 DEG C. and the strip may be subsequently annealed twice in a neutral atmosphere. Si compounds are colloidal silica, silicic acid, kaolins, micos and feldspars. Cr compounds are chromium trioxide, alkali metal, alkaline earth metal and ammonium chromates and dichromates. Organic compounds are those containing carboxyl, hydroxyl, amino, amido, oxy, nitrile, aldehyde and carbon to carbon double bond groups e.g. aldehydephenolico, polyvinyl alkyl ether resins, polymethacrylates, NH4 polyacylates polyacrylic acids and their derivatives; sucrose, glycols, manitol and sorbitol. Ti, Zr, Va, Nb, Al hydroxides and oxides and Cr, Mn, Ni, Co, Cd, Zn, Ca, Ba, Mg, Sr, Fe acetates, formates, oxalates, citrates, carbonates, oxides and hydroxides are referred to. Coated stell strip may be used for transformer and electric motor stator and rotor cores.
GB34590/65A 1964-08-12 1965-08-12 Improvements to the coating of metals Expired GB1077226A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US38917864A 1964-08-12 1964-08-12

Publications (1)

Publication Number Publication Date
GB1077226A true GB1077226A (en) 1967-07-26

Family

ID=23537173

Family Applications (1)

Application Number Title Priority Date Filing Date
GB34590/65A Expired GB1077226A (en) 1964-08-12 1965-08-12 Improvements to the coating of metals

Country Status (5)

Country Link
US (1) US3421949A (en)
BE (1) BE667113A (en)
DE (1) DE1249965B (en)
FR (1) FR1455229A (en)
GB (1) GB1077226A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6447620B1 (en) 1998-06-01 2002-09-10 Henkel Corporation Water-based surface-treating agent for metallic material

Families Citing this family (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3942989A (en) * 1970-10-22 1976-03-09 Mayhew John T White rust prevention for zinc coated surfaces
US3998670A (en) * 1972-05-04 1976-12-21 Nippon Steel Corporation Process for producing steel plate substrates for lacquering
US3935035A (en) * 1973-06-05 1976-01-27 Nippon Steel Corporation Aqueous solution and method for surface treatment of metals
DE2711431C2 (en) * 1977-03-16 1986-12-11 Metallgesellschaft Ag, 6000 Frankfurt Process for the surface treatment of metals
US4367101A (en) * 1981-04-06 1983-01-04 Armco Inc. Method of providing an anti-stick coating on non-oriented, semi-processed electrical steels to be subjected to a quality anneal
US4384902A (en) * 1981-06-15 1983-05-24 Occidental Chemical Corporation Trivalent chromium passivate composition and process
CA1256003A (en) * 1984-03-23 1989-06-20 Parker Chemical Company Metal base coating composition comprising chromium, silica and phosphate and process for coating metal therewith
DE3539774A1 (en) * 1985-07-17 1987-05-14 Metallgesellschaft Ag METHOD FOR APPLYING AN INSULATING LAYER
JPH0733583B2 (en) * 1990-12-26 1995-04-12 川崎製鉄株式会社 Method for producing chromate-treated plated steel
DE19735748A1 (en) * 1997-08-18 1998-07-30 Siemens Ag Powder mould coating insulated electric/magnetic sheet-steel segment e.g. for electric machine stator
JP2013249528A (en) * 2012-06-04 2013-12-12 Dipsol Chemicals Co Ltd Trivalent chromium-conversion processing solution containing aluminum-modified colloidal silica
JP5811285B2 (en) * 2013-05-23 2015-11-11 Ｊｆｅスチール株式会社 Electrical steel sheet with insulation coating

Family Cites Families (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2472592A (en) * 1945-01-09 1949-06-07 Allegheny Ludlum Steel Inorganic insulating coating for electrical steel sheet and strip
NL66964C (en) * 1946-04-03
US2835618A (en) * 1954-03-09 1958-05-20 Parker Rust Proof Co Solution and method for producing heat resistant electrical insulation coatings on ferrous surfaces
US2902390A (en) * 1955-07-01 1959-09-01 Parker Rust Proof Co Method of coating metal surface with hexavalent chromium compound and polyacrylic acid
US2846342A (en) * 1955-09-30 1958-08-05 Leo P Curtin Bonding coats for metal
NL102487C (en) * 1957-06-06
US3097118A (en) * 1959-11-09 1963-07-09 Clarence E Leonard Process and product for removing rust and coating materials
NL270080A (en) * 1960-10-10 1900-01-01
US3140204A (en) * 1960-12-27 1964-07-07 Nihon Parkerising Kabushiki Ka Method of inactivating metal surfaces
US3214302A (en) * 1961-02-22 1965-10-26 Hooker Chemical Corp Method for forming insulating coatings on metal surfaces
US3150015A (en) * 1961-08-29 1964-09-22 Allegheny Ludlum Steel Insulation for silicon steel

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6447620B1 (en) 1998-06-01 2002-09-10 Henkel Corporation Water-based surface-treating agent for metallic material

Also Published As

Publication number Publication date
BE667113A (en) 1965-11-16
FR1455229A (en) 1966-04-01
DE1249965B (en)
US3421949A (en) 1969-01-14

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