JPS57169092A - Chromating method for plated steel plate - Google Patents

Chromating method for plated steel plate

Info

Publication number
JPS57169092A
JPS57169092A JP5316981A JP5316981A JPS57169092A JP S57169092 A JPS57169092 A JP S57169092A JP 5316981 A JP5316981 A JP 5316981A JP 5316981 A JP5316981 A JP 5316981A JP S57169092 A JPS57169092 A JP S57169092A
Authority
JP
Japan
Prior art keywords
steel plate
treating liquid
cr2o3
silica sol
plated steel
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
JP5316981A
Other languages
Japanese (ja)
Inventor
Takenori Deguchi
Kenji Koshiishi
Takao Tomosue
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 Nisshin Co Ltd
Original Assignee
Nisshin Steel 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 Nisshin Steel Co Ltd filed Critical Nisshin Steel Co Ltd
Priority to JP5316981A priority Critical patent/JPS57169092A/en
Publication of JPS57169092A publication Critical patent/JPS57169092A/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
    • C23C22/05—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 using aqueous solutions
    • C23C22/06—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 using aqueous solutions using aqueous acidic solutions with pH less than 6
    • C23C22/24—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 using aqueous solutions using aqueous acidic solutions with pH less than 6 containing hexavalent chromium compounds

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)
  • Chemical Treatment Of Metals (AREA)

Abstract

PURPOSE:To improve the corrosion resistance of a plated steel plate considerably by treating the surface of the plated steel plate with treating liquid contg. a prescribed ratio of Cr2O3 and a prescribed ratio of cation type silica sol corresponding to SiO2. CONSTITUTION:Treating liquid is prepd. by adding cation type silica sol and water to a Cr2O3 soln. in such a way that Cr2O3 is contained at 10-50g in one liter of the treating liquid to be obtained in the final and cation type silica sol at 10-100g as SiO2. On the other hand, a steel plate applied with hot dipping or electroplating of Zn, Al, etc. is degreased, if necessary, and is then rinsed to clean the surface. The steel plate after the cleaning treatment is dipped in said treating liquid fo about 5-10 seconds at 50-70 deg.C. Next, the excess treating liquid stuck on the dipped steel plate is removed with rubber rollers or the like and the steel plate is dried without rinsing, whereby the intended steeel plate having the chromated surface is obtained.
JP5316981A 1981-04-10 1981-04-10 Chromating method for plated steel plate Pending JPS57169092A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP5316981A JPS57169092A (en) 1981-04-10 1981-04-10 Chromating method for plated steel plate

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP5316981A JPS57169092A (en) 1981-04-10 1981-04-10 Chromating method for plated steel plate

Publications (1)

Publication Number Publication Date
JPS57169092A true JPS57169092A (en) 1982-10-18

Family

ID=12935350

Family Applications (1)

Application Number Title Priority Date Filing Date
JP5316981A Pending JPS57169092A (en) 1981-04-10 1981-04-10 Chromating method for plated steel plate

Country Status (1)

Country Link
JP (1) JPS57169092A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6013079A (en) * 1983-07-04 1985-01-23 Kawasaki Steel Corp Method for chromating galvanized steel sheet
JPS6086282A (en) * 1983-10-15 1985-05-15 Kawasaki Steel Corp Chromate treated zinc plated steel plate excellent in corrosion resistance and paintability
US4650527A (en) * 1983-08-12 1987-03-17 Nippon Light Metal Company Limited Hydrophilic surface-treating process for an aluminum article
JP2008142259A (en) * 2006-12-08 2008-06-26 Aichi Dennetsu Kk Tunnel steamer

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6013079A (en) * 1983-07-04 1985-01-23 Kawasaki Steel Corp Method for chromating galvanized steel sheet
US4650527A (en) * 1983-08-12 1987-03-17 Nippon Light Metal Company Limited Hydrophilic surface-treating process for an aluminum article
JPS6086282A (en) * 1983-10-15 1985-05-15 Kawasaki Steel Corp Chromate treated zinc plated steel plate excellent in corrosion resistance and paintability
JP2008142259A (en) * 2006-12-08 2008-06-26 Aichi Dennetsu Kk Tunnel steamer

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