GB494503A - Surface treatment of iron and steel - Google Patents
Surface treatment of iron and steelInfo
- Publication number
- GB494503A GB494503A GB215237A GB215237A GB494503A GB 494503 A GB494503 A GB 494503A GB 215237 A GB215237 A GB 215237A GB 215237 A GB215237 A GB 215237A GB 494503 A GB494503 A GB 494503A
- Authority
- GB
- United Kingdom
- Prior art keywords
- iron
- coating
- lead
- electrolytically
- rinsed
- 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.)
- Expired
Links
Classifications
-
- C—CHEMISTRY; METALLURGY
- C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
- C25D—PROCESSES FOR THE ELECTROLYTIC OR ELECTROPHORETIC PRODUCTION OF COATINGS; ELECTROFORMING; APPARATUS THEREFOR
- C25D5/00—Electroplating characterised by the process; Pretreatment or after-treatment of workpieces
- C25D5/34—Pretreatment of metallic surfaces to be electroplated
- C25D5/36—Pretreatment of metallic surfaces to be electroplated of iron or steel
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Chemical Treatment Of Metals (AREA)
Abstract
To protect iron and steel surfaces against corrosion a phosphate coating is first formed and then a protective coating comprising lead, tin, tellurium, or antimony alone, a succession of two or more of these elements, or an alloy of two or more of them. Lead and lead alloys are especially suitable. The phosphatizing may be effected chemically or electrolytically, e.g. with a hot 3 per cent solution of mixed acid phosphates of iron and manganese. The surface is then rinsed and may be dried prior to the deposition of the outer coating, which may be effected in any suitable manner, e.g. electrolytically. The coating is rinsed and dried and may be covered with a coat of paint, bituminous varnish, &c.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB215237A GB494503A (en) | 1937-01-25 | 1937-01-25 | Surface treatment of iron and steel |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB215237A GB494503A (en) | 1937-01-25 | 1937-01-25 | Surface treatment of iron and steel |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB494503A true GB494503A (en) | 1938-10-25 |
Family
ID=9734515
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB215237A Expired GB494503A (en) | 1937-01-25 | 1937-01-25 | Surface treatment of iron and steel |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB494503A (en) |
-
1937
- 1937-01-25 GB GB215237A patent/GB494503A/en not_active Expired
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