GB2021649A - A method of phosphate coating - Google Patents

A method of phosphate coating

Info

Publication number
GB2021649A
GB2021649A GB7916468A GB7916468A GB2021649A GB 2021649 A GB2021649 A GB 2021649A GB 7916468 A GB7916468 A GB 7916468A GB 7916468 A GB7916468 A GB 7916468A GB 2021649 A GB2021649 A GB 2021649A
Authority
GB
United Kingdom
Prior art keywords
solution
cavitation
phosphate
fluid
chamber
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.)
Withdrawn
Application number
GB7916468A
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.)
Automotive Products PLC
Original Assignee
Automotive Products PLC
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 Automotive Products PLC filed Critical Automotive Products PLC
Priority to GB7916468A priority Critical patent/GB2021649A/en
Publication of GB2021649A publication Critical patent/GB2021649A/en
Withdrawn legal-status Critical Current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
    • 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

Abstract

A process of phosphate coating ferrous metal articles by immersing the article in a phosphate solution and intensely agitating the solution to the extent that cavitation takes place in the vicinity of the article. In the preferred process the cavitation of the solution is produced by passing the fluid through fluid discharging jets (10) each of which comprises an inlet chamber (11) for receiving the fluid under pressure, a middle cylindrical chamber (14) having tangentially directed inlets (16) from the inlet chamber, and a co-axial outlet bore (15) of smaller diameter than the middle chamber and through which the pressurised solution leaves the jet, the phosphate solution being forced through the jet to produce vortex flow in the outlet bore, the rate of flow being such as to produce cavitation in the emerging phosphate solution. <IMAGE>
GB7916468A 1978-05-20 1979-05-11 A method of phosphate coating Withdrawn GB2021649A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB7916468A GB2021649A (en) 1978-05-20 1979-05-11 A method of phosphate coating

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB2096778 1978-05-20
GB7916468A GB2021649A (en) 1978-05-20 1979-05-11 A method of phosphate coating

Publications (1)

Publication Number Publication Date
GB2021649A true GB2021649A (en) 1979-12-05

Family

ID=26255011

Family Applications (1)

Application Number Title Priority Date Filing Date
GB7916468A Withdrawn GB2021649A (en) 1978-05-20 1979-05-11 A method of phosphate coating

Country Status (1)

Country Link
GB (1) GB2021649A (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1984002722A1 (en) * 1983-01-03 1984-07-19 Detrex Chem Ind Zinc phosphate coated metal and process of producing same
US4529451A (en) * 1983-01-03 1985-07-16 Detrex Chemical Industries, Inc. Zinc phosphate coated metal and process of producing same
FR2659356A1 (en) * 1990-03-07 1991-09-13 Liesse Maurice Process for protecting the surface of metal objects by a chemical route
EP0779377A1 (en) * 1995-12-12 1997-06-18 Nippon Paint Co., Ltd. Pretreatment method for coating on metal molded article
EP0801149A1 (en) * 1996-04-10 1997-10-15 Nippon Paint Co., Ltd. Method for Zinc phosphating molded metal articles

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1984002722A1 (en) * 1983-01-03 1984-07-19 Detrex Chem Ind Zinc phosphate coated metal and process of producing same
US4529451A (en) * 1983-01-03 1985-07-16 Detrex Chemical Industries, Inc. Zinc phosphate coated metal and process of producing same
FR2659356A1 (en) * 1990-03-07 1991-09-13 Liesse Maurice Process for protecting the surface of metal objects by a chemical route
EP0779377A1 (en) * 1995-12-12 1997-06-18 Nippon Paint Co., Ltd. Pretreatment method for coating on metal molded article
US5780122A (en) * 1995-12-12 1998-07-14 Nippon Paint Co., Ltd. Pretreatment method for coating on molded metal article
EP0801149A1 (en) * 1996-04-10 1997-10-15 Nippon Paint Co., Ltd. Method for Zinc phosphating molded metal articles
US5863357A (en) * 1996-04-10 1999-01-26 Nippon Paint Co., Ltd. Method for zinc phosphating molded metal articles

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Legal Events

Date Code Title Description
WAP Application withdrawn, taken to be withdrawn or refused ** after publication under section 16(1)