JPS6456879A - Method for chromating galvanized steel sheet - Google Patents
Method for chromating galvanized steel sheetInfo
- Publication number
- JPS6456879A JPS6456879A JP21422687A JP21422687A JPS6456879A JP S6456879 A JPS6456879 A JP S6456879A JP 21422687 A JP21422687 A JP 21422687A JP 21422687 A JP21422687 A JP 21422687A JP S6456879 A JPS6456879 A JP S6456879A
- Authority
- JP
- Japan
- Prior art keywords
- steel sheet
- ions
- tervalent
- soln
- contg
- 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
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
- C23C22/34—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 fluorides or complex fluorides
- C23C22/37—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 fluorides or complex fluorides containing also 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 produce the titled steel sheet having superior corrosion resistance by applying an aq. soln. contg. specified amts. of sodium silicofluoride and sodium fluoride basing on the total amt. of hexavalent and tervalent Cr ions including a specified amt. of tervalent Cr ions to a galvanized steel sheet and by drying this steel sheet. CONSTITUTION:An aq. soln. contg. Cr ions composed of hexavalent and tervalent Cr ions and including tervalent Cr ions in 0.3-about 0.5 ratio to the total amt. of the Cr ions and further contg. one or more of silicofluorides of Na, K, NH3, Mg and Ca by 1X10<-3>-1X10<-1>mol. per 1mol. Cr ins and one or more of fluorides or acidic fluorides of NH3, Na and K by 3X10<-3>-5X10<-1>mol. per 1mol. Cr ions is prepd. The aq. soln. is applied to a galvanized steel sheet and this steel sheet is dried without washing. A chromated steel sheet having superior corrosion resistance is obtd. without requiring troublesome control of the treating soln. even in case of long-time continuous treatment.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP21422687A JPS6456879A (en) | 1987-08-28 | 1987-08-28 | Method for chromating galvanized steel sheet |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP21422687A JPS6456879A (en) | 1987-08-28 | 1987-08-28 | Method for chromating galvanized steel sheet |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS6456879A true JPS6456879A (en) | 1989-03-03 |
Family
ID=16652285
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP21422687A Pending JPS6456879A (en) | 1987-08-28 | 1987-08-28 | Method for chromating galvanized steel sheet |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS6456879A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US7122947B2 (en) | 1999-02-25 | 2006-10-17 | Ngk Spark Plug Co., Ltd. | Glow plug and spark plug, and manufacturing method therefor |
-
1987
- 1987-08-28 JP JP21422687A patent/JPS6456879A/en active Pending
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US7122947B2 (en) | 1999-02-25 | 2006-10-17 | Ngk Spark Plug Co., Ltd. | Glow plug and spark plug, and manufacturing method therefor |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
HK1007576A1 (en) | Zinc phosphate conversion coating composition and process | |
CA2066026A1 (en) | Composition and process for chromating galvanized steel and like materials | |
JPS55107784A (en) | Phosphate-treating method for forming metal surface suited for electrodeposition painting | |
NZ233347A (en) | Non-chromium aqueous coating composition for an aluminium substrate | |
JPS55152183A (en) | Composition for forming zinc phosphate layer on metal surface | |
ES2055518T3 (en) | PROCEDURE FOR THE APPLICATION OF PHOSPHATE COATINGS ON METALLIC SURFACES. | |
DE69801929D1 (en) | Anti-corrosion coating composition containing triazinthiol, anti-corrosion treatment method and metal materials thus treated | |
GB2223239B (en) | Phosphating process | |
SE9201330D0 (en) | PROCESS FOR SEALING CHROMATE CONVERSION COATINGS ON ELECTRODEPOSITED ZINC | |
FR2783256B1 (en) | ANODIC TREATMENT OF ZINC PLATED STEEL SHEET IN AQUEOUS SOLUTIONS CONTAINING SULPHATES | |
KR927002438A (en) | Chromate treatment method of galvanized steel sheet | |
JPS6456879A (en) | Method for chromating galvanized steel sheet | |
MY119942A (en) | Surface-treated article of magnesium or magnesium alloys, method of surface preparation and method of coating | |
JPS6456878A (en) | Production of chromated steel sheet having superior coatability | |
NZ241758A (en) | Rinsing phosphate-treated metal with aluminium chlorohydrate solution | |
ES2112593T3 (en) | PROCEDURE FOR THE APPLICATION OF PHOSPHATE COATINGS. | |
JPS5576078A (en) | Pretreatment of iron or steel surface having iron oxide coating prior to painting | |
Prescott | No-Rinse Treatment for Metal Surfaces | |
US5039563A (en) | Surface treating agent before coating | |
JPS5576077A (en) | Pretreatment of brazed iron or steel prior to painting | |
CA2004715A1 (en) | Composition and process for coating metallic surfaces | |
JPS6456877A (en) | Production of chromated galvanized steel sheet | |
Marshall et al. | A new total organic approach for the control of corrosion and deposition in cooling water systems | |
Mori et al. | Metal Surface Treatment | |
JPS55125280A (en) | Surface-treating method of zinc or zinc-plated steel sheet |