GB1214643A - Improvements in and relating to the treatment of steel strip - Google Patents

Improvements in and relating to the treatment of steel strip

Info

Publication number
GB1214643A
GB1214643A GB4029767A GB4029767A GB1214643A GB 1214643 A GB1214643 A GB 1214643A GB 4029767 A GB4029767 A GB 4029767A GB 4029767 A GB4029767 A GB 4029767A GB 1214643 A GB1214643 A GB 1214643A
Authority
GB
United Kingdom
Prior art keywords
steel
hno
coating
relating
treatment
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
GB4029767A
Inventor
Anthony O'connor
David Price Hunter
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.)
Steel Company of Wales Ltd
Original Assignee
Steel Company of Wales 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 Steel Company of Wales Ltd filed Critical Steel Company of Wales Ltd
Priority to GB4029767A priority Critical patent/GB1214643A/en
Publication of GB1214643A publication Critical patent/GB1214643A/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
    • 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)
  • Metallurgy (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Materials Engineering (AREA)
  • Mechanical Engineering (AREA)
  • General Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Dispersion Chemistry (AREA)
  • Power Engineering (AREA)
  • Paints Or Removers (AREA)

Abstract

1,214,643. Pickling and surface-treating steel. STEEL CO. OF WALES Ltd. Sept.20, 1968 [Sept.4, 1967], No. 40297/67. Headings C7E and C7U. A steel surface is treated with a composition consisting of a partially reduced CrO 3 solution in water and 5-50 wt% of silica, and the coating is thereafter cured at elevated temperature to provide an electrically insulating coating. Partial reduction of the CrO 3 is effected using an organic reducing agent, e.g. starch or sugar, and the curing takes place at 200-650‹C. Prior to coating, the steel may be pickled in a solution of 2% HF+2% HNO 3 , or 4% HNO 3 , or first in 20% H 2 SO 4 + 2% HF, then in 4% HNO 3
GB4029767A 1967-09-04 1967-09-04 Improvements in and relating to the treatment of steel strip Expired GB1214643A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB4029767A GB1214643A (en) 1967-09-04 1967-09-04 Improvements in and relating to the treatment of steel strip

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB4029767A GB1214643A (en) 1967-09-04 1967-09-04 Improvements in and relating to the treatment of steel strip

Publications (1)

Publication Number Publication Date
GB1214643A true GB1214643A (en) 1970-12-02

Family

ID=10414193

Family Applications (1)

Application Number Title Priority Date Filing Date
GB4029767A Expired GB1214643A (en) 1967-09-04 1967-09-04 Improvements in and relating to the treatment of steel strip

Country Status (1)

Country Link
GB (1) GB1214643A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2162865A (en) * 1984-08-06 1986-02-12 Raytheon Co Surface preparation for aluminum parts

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2162865A (en) * 1984-08-06 1986-02-12 Raytheon Co Surface preparation for aluminum parts

Similar Documents

Publication Publication Date Title
ES485437A1 (en) Continuous treatment of steel sheet
GB1214643A (en) Improvements in and relating to the treatment of steel strip
ES443350A1 (en) Corrosion inhibiting coatings for steel
ES377462A1 (en) Metal-treating process
JPS5681696A (en) Surface treatment of tinned steel sheet
GB1180951A (en) An Improved Method of Providing the Surface of Steel with a Corrosion-Resistant Film.
JPS522838A (en) Method of preventing corrosion of steel surface in absorption type refrigerator
GB1109389A (en) Process for cleaning and/or pickling ferrous metallic surfaces
ES359604A1 (en) Paint stripping composition and method
JPS545835A (en) Method of treating metal surface
JPS5266811A (en) Bright cooling of steel sheet
ES243444A1 (en) Improvements in the methods for the protection of metallic surfaces (Machine-translation by Google Translate, not legally binding)
AU235348B2 (en) Improvements in or relating to cathodic protection of metal structures against corrosion
Rozenfeld et al. The Protection of Aluminum From Pitting Corrosion
AU5520859A (en) Improvements in or relating to cathodic protection of metal structures against corrosion
GB1292503A (en) Formulation for treatment of psoriasis
IT948047B (en) PROCEDURE TO PREVENT FOAM FORMATION IN ACI D AND PICKLING SOLUTIONS
JPS5353538A (en) Method of treating surface of metal to be coated with ethylene tetrafluororesin
GB1536523A (en) Production of galvanized steel strip
AU5500669A (en) Improvements in or relating to method of heat treating stainless steel to maintain bright surface appearance
GB1048543A (en) Treating cadmium surfaces
STAEHLE et al. Fundamental studies of dissolution and passivity of alloys and compounds(film growth on iron in sodium phosphate solutions)[Annual Report, 1 Mar. 1973- 28 Feb. 1974]
GB764723A (en) Porcelain enamelling of aluminum metal
GB1405267A (en) Pickling aluminium
JPS5242655A (en) Dehydration system

Legal Events

Date Code Title Description
414F Notice of opposition given (sect. 14/1949)
414E Application relinquished (sect. 14/1949)
CSNS Application of which complete specification have been accepted and published, but patent is not sealed