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JPS54109039A - Regulating method for amount of chromate film on steel sheet treated with chromic acid by electrolysis - Google Patents

Regulating method for amount of chromate film on steel sheet treated with chromic acid by electrolysis

Info

Publication number
JPS54109039A
JPS54109039A JP1596278A JP1596278A JPS54109039A JP S54109039 A JPS54109039 A JP S54109039A JP 1596278 A JP1596278 A JP 1596278A JP 1596278 A JP1596278 A JP 1596278A JP S54109039 A JPS54109039 A JP S54109039A
Authority
JP
Japan
Prior art keywords
film
electrolysis
steel sheet
chromate film
chromate
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.)
Pending
Application number
JP1596278A
Other languages
Japanese (ja)
Inventor
Minoru Kamata
Yukinobu Higuchi
Yukio Tsukamoto
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.)
Nippon Steel Corp
Original Assignee
Nippon Steel Corp
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 Nippon Steel Corp filed Critical Nippon Steel Corp
Priority to JP1596278A priority Critical patent/JPS54109039A/en
Publication of JPS54109039A publication Critical patent/JPS54109039A/en
Pending 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

Landscapes

  • Chemical & Material Sciences (AREA)
  • General Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Electrochemical Coating By Surface Reaction (AREA)

Abstract

PURPOSE: To enhance the corrosion resistance, coating adherence and weldability of a steel product by forming a chromate film on the product surface and subjecting the film to dissolution treatment in a soln. while applying ultrasonic vibration to regulate the amt. of the film.
CONSTITUTION: Electrolysis is carried out using a steel sheet, etc. as a cathode in an aq. soln. contg. 5W150 g/l (as CrO3) of chromic anhydride, chromate or dichromate and an auxiliary at about 30W70°C for about 0.5W3 sec to form a chromate film. The electrolytic bath is immediately applied with vibration energy of 0.1W1 W/cm2 to form cavitation. Thus, the film is subjected to dissolution treatment in a short time to stably regulate the amt. of the film to below 6 mg/m2.
COPYRIGHT: (C)1979,JPO&Japio
JP1596278A 1978-02-16 1978-02-16 Regulating method for amount of chromate film on steel sheet treated with chromic acid by electrolysis Pending JPS54109039A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP1596278A JPS54109039A (en) 1978-02-16 1978-02-16 Regulating method for amount of chromate film on steel sheet treated with chromic acid by electrolysis

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP1596278A JPS54109039A (en) 1978-02-16 1978-02-16 Regulating method for amount of chromate film on steel sheet treated with chromic acid by electrolysis

Publications (1)

Publication Number Publication Date
JPS54109039A true JPS54109039A (en) 1979-08-27

Family

ID=11903342

Family Applications (1)

Application Number Title Priority Date Filing Date
JP1596278A Pending JPS54109039A (en) 1978-02-16 1978-02-16 Regulating method for amount of chromate film on steel sheet treated with chromic acid by electrolysis

Country Status (1)

Country Link
JP (1) JPS54109039A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59190370A (en) * 1983-04-13 1984-10-29 Sumitomo Metal Ind Ltd Treatment with zinc phosphate and treatment vessel

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59190370A (en) * 1983-04-13 1984-10-29 Sumitomo Metal Ind Ltd Treatment with zinc phosphate and treatment vessel

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