GB1159420A - Chromating of Metal Surfaces - Google Patents

Chromating of Metal Surfaces

Info

Publication number
GB1159420A
GB1159420A GB3341068A GB3341068A GB1159420A GB 1159420 A GB1159420 A GB 1159420A GB 3341068 A GB3341068 A GB 3341068A GB 3341068 A GB3341068 A GB 3341068A GB 1159420 A GB1159420 A GB 1159420A
Authority
GB
United Kingdom
Prior art keywords
metal surfaces
chromating
july
aqueous solution
chromic acid
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
GB3341068A
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 GB1159420A publication Critical patent/GB1159420A/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
    • C23F—NON-MECHANICAL REMOVAL OF METALLIC MATERIAL FROM SURFACE; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL; MULTI-STEP PROCESSES FOR SURFACE TREATMENT OF METALLIC MATERIAL INVOLVING AT LEAST ONE PROCESS PROVIDED FOR IN CLASS C23 AND AT LEAST ONE PROCESS COVERED BY SUBCLASS C21D OR C22F OR CLASS C25
    • C23F1/00—Etching metallic material by chemical means
    • C23F1/10—Etching compositions
    • C23F1/14—Aqueous compositions
    • C23F1/16—Acidic compositions
    • C23F1/28—Acidic compositions for etching iron group 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
    • C23C22/78—Pretreatment of the material to be coated

Abstract

1,159,420. Coated metal surfaces. PYRENE CO. Ltd. 12 July, 1968 [18 July, 1967], No. 33410/68. Heading B2K. [Also in Division C7] A grease-free surface of Fe, Zn or Al is etched in an aqueous solution of 0.2 to 3 g/l of chromic acid and 0.5 to 5.0 g/l of hydrofluoric acid and then chromated in an aqueous solution containing hexavalent chromium which may be in the form of chromic acid or Zn, Ca, Al or Cr chromates. The sheets may be subsequently coated with acrylate storing lacquers.
GB3341068A 1967-07-18 1968-07-12 Chromating of Metal Surfaces Expired GB1159420A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19671621487 DE1621487B2 (en) 1967-07-18 1967-07-18 Process for chemical surface treatment of steel, zinc and aluminum by pickling and drying a chromium-containing solution

Publications (1)

Publication Number Publication Date
GB1159420A true GB1159420A (en) 1969-07-23

Family

ID=5682540

Family Applications (1)

Application Number Title Priority Date Filing Date
GB3341068A Expired GB1159420A (en) 1967-07-18 1968-07-12 Chromating of Metal Surfaces

Country Status (2)

Country Link
DE (1) DE1621487B2 (en)
GB (1) GB1159420A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2145430A (en) * 1983-08-11 1985-03-27 Zincroksid Spa Improving the corrosion resistance of galvanised steel
EP0156853A1 (en) * 1983-09-16 1985-10-09 H.H. Robertson Company Method for providing environmentally stable aluminum surfaces for painting and adhesive bonding, and product produced

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2145430A (en) * 1983-08-11 1985-03-27 Zincroksid Spa Improving the corrosion resistance of galvanised steel
EP0156853A1 (en) * 1983-09-16 1985-10-09 H.H. Robertson Company Method for providing environmentally stable aluminum surfaces for painting and adhesive bonding, and product produced
EP0156853A4 (en) * 1983-09-16 1986-02-10 Robertson Co H H Method for providing environmentally stable aluminum surfaces for painting and adhesive bonding, and product produced.

Also Published As

Publication number Publication date
DE1621487B2 (en) 1970-04-23
DE1621487A1 (en) 1970-04-23

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Legal Events

Date Code Title Description
PS Patent sealed
PLE Entries relating assignments, transmissions, licences in the register of patents
PLNP Patent lapsed through nonpayment of renewal fees