FR2308696A1 - Zinc phosphating esp. ferrous metals - with automatic control of additives - Google Patents

Zinc phosphating esp. ferrous metals - with automatic control of additives

Info

Publication number
FR2308696A1
FR2308696A1 FR7611958A FR7611958A FR2308696A1 FR 2308696 A1 FR2308696 A1 FR 2308696A1 FR 7611958 A FR7611958 A FR 7611958A FR 7611958 A FR7611958 A FR 7611958A FR 2308696 A1 FR2308696 A1 FR 2308696A1
Authority
FR
France
Prior art keywords
soln
phosphating
phosphate
esp
additives
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.)
Granted
Application number
FR7611958A
Other languages
French (fr)
Other versions
FR2308696B1 (en
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.)
Imperial Chemical Industries Ltd
Original Assignee
Imperial Chemical Industries 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
Priority claimed from GB16799/75A external-priority patent/GB1557779A/en
Application filed by Imperial Chemical Industries Ltd filed Critical Imperial Chemical Industries Ltd
Publication of FR2308696A1 publication Critical patent/FR2308696A1/en
Application granted granted Critical
Publication of FR2308696B1 publication Critical patent/FR2308696B1/fr
Granted 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
    • C23C22/77—Controlling or regulating of the coating process

Abstract

Metals are given a coating of Zn phosphate by (1) treating the surface with an acidic phosphating soln. contg. Zn, phosphate and alkali metal ions, (2) recharging the soln. as the coating thickness increases by adding (a) a material contg. Zn and phosphate ions and (b) a material contg. alkali metal ions such that (b) has an alkaline reaction w.r.t. (a), and (3) making the compsn. of the phosphating soln. the optimum by adding (a) and (b) in predetermined amts. During the treatment the conductivity of the soln. is maintained constant for a specific temp. by adding (a) or (b). Automatic Zn phosphating is achieved at the same time maintaining the compsns. of the phosphating soln. content. It is possible to use the conductivity of the soln. as an indicator for the addn. of more of the constituents right from the beginning of the process. There is also less waste.
FR7611958A 1975-04-23 1976-04-22 Zinc phosphating esp. ferrous metals - with automatic control of additives Granted FR2308696A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB16799/75A GB1557779A (en) 1975-04-23 1975-04-23 Phosphating process
GB328876 1976-01-28

Publications (2)

Publication Number Publication Date
FR2308696A1 true FR2308696A1 (en) 1976-11-19
FR2308696B1 FR2308696B1 (en) 1980-05-30

Family

ID=26238198

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7611958A Granted FR2308696A1 (en) 1975-04-23 1976-04-22 Zinc phosphating esp. ferrous metals - with automatic control of additives

Country Status (12)

Country Link
JP (1) JPS51129828A (en)
AR (1) AR220509A1 (en)
AU (1) AU507110B2 (en)
BR (1) BR7602508A (en)
CA (1) CA1090236A (en)
DE (1) DE2617820A1 (en)
ES (1) ES447267A1 (en)
FR (1) FR2308696A1 (en)
HU (1) HU173469B (en)
IT (1) IT1063238B (en)
MX (1) MX3306E (en)
SE (1) SE433363B (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2410055A1 (en) * 1977-11-29 1979-06-22 Ici Ltd PROCESS FOR COATING PHOSPHATE ON A METAL SUBSTRATE
EP0162345A2 (en) * 1984-05-09 1985-11-27 Nippondenso Co., Ltd. Method of forming a chemical phosphate coating on the surface of steel

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS60184684A (en) * 1984-02-29 1985-09-20 Nippon Parkerizing Co Ltd Controlling method of chemical conversion treatment solution for zinc phosphate film

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3333988A (en) * 1965-12-16 1967-08-01 Phosphate coating process
FR2153261A1 (en) * 1971-09-20 1973-05-04 Parker Ste Continentale
GB1374568A (en) * 1973-04-27 1974-11-20 Pyrene Chemical Services Ltd Production of phosphate coatings on metals
FR2227349A2 (en) * 1973-04-27 1974-11-22 Parker Ste Continentale

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3674672A (en) * 1970-03-25 1972-07-04 Hooker Chemical Corp Multiparameter process solution analyzer-controller

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3333988A (en) * 1965-12-16 1967-08-01 Phosphate coating process
FR2153261A1 (en) * 1971-09-20 1973-05-04 Parker Ste Continentale
GB1374568A (en) * 1973-04-27 1974-11-20 Pyrene Chemical Services Ltd Production of phosphate coatings on metals
FR2227349A2 (en) * 1973-04-27 1974-11-22 Parker Ste Continentale

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2410055A1 (en) * 1977-11-29 1979-06-22 Ici Ltd PROCESS FOR COATING PHOSPHATE ON A METAL SUBSTRATE
EP0162345A2 (en) * 1984-05-09 1985-11-27 Nippondenso Co., Ltd. Method of forming a chemical phosphate coating on the surface of steel
EP0162345A3 (en) * 1984-05-09 1987-12-16 Nippondenso Co., Ltd. Method of forming a chemical phosphate coating on the surface of steel

Also Published As

Publication number Publication date
BR7602508A (en) 1976-10-19
SE7604663L (en) 1976-10-24
MX3306E (en) 1980-09-08
SE433363B (en) 1984-05-21
AU1324876A (en) 1977-10-27
FR2308696B1 (en) 1980-05-30
CA1090236A (en) 1980-11-25
IT1063238B (en) 1985-02-11
AU507110B2 (en) 1980-02-07
JPS51129828A (en) 1976-11-11
AR220509A1 (en) 1980-11-14
DE2617820A1 (en) 1976-11-04
HU173469B (en) 1979-05-28
ES447267A1 (en) 1977-10-16

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Legal Events

Date Code Title Description
ST Notification of lapse