GB701877A - Method of treating electroplated magnesium castings - Google Patents
Method of treating electroplated magnesium castingsInfo
- Publication number
- GB701877A GB701877A GB4922/52A GB492252A GB701877A GB 701877 A GB701877 A GB 701877A GB 4922/52 A GB4922/52 A GB 4922/52A GB 492252 A GB492252 A GB 492252A GB 701877 A GB701877 A GB 701877A
- Authority
- GB
- United Kingdom
- Prior art keywords
- castings
- blistering
- magnesium
- temperature
- electroplated
- 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
- C25D5/48—After-treatment of electroplated surfaces
- C25D5/50—After-treatment of electroplated surfaces by heat-treatment
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Electroplating Methods And Accessories (AREA)
Abstract
Castings of magnesium or an alloy containing at least 80 per cent. of magnesium by weight are buffed and cleaned and coated with zinc by immersion in a solution at 180 DEG F. of composition:-tetrasodium phosphate 16, hydrated zinc sulphate 5.3, potassium fluoride 1.0, potassium carbonate 0.7 oz. per U.S.A. gallon. Copper, nickel and chromium are then successively deposited electrolytically. The plated castings, which are normally subject to blistering when heated above 450 DEG F., are then subjected to prolonged heating at a temperature between 250 DEG F. and the blistering temperature. The castings may then be raised above the latter temperature without blistering. The heat treatment may last for 4-16 hours at 350 DEG -450 DEG F.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US701877XA | 1951-04-13 | 1951-04-13 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB701877A true GB701877A (en) | 1954-01-06 |
Family
ID=22093695
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB4922/52A Expired GB701877A (en) | 1951-04-13 | 1952-02-25 | Method of treating electroplated magnesium castings |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB701877A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE1091397B (en) * | 1956-06-20 | 1960-10-20 | Dow Chemical Co | Process for the galvanic deposition of a zinc coating on magnesium and its alloys |
| CN103938240A (en) * | 2013-06-03 | 2014-07-23 | 无锡市锡山区鹅湖镇荡口青荡金属制品厂 | Combined plating solution for electroplating chromium on surface of magnesium alloy die casting |
-
1952
- 1952-02-25 GB GB4922/52A patent/GB701877A/en not_active Expired
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE1091397B (en) * | 1956-06-20 | 1960-10-20 | Dow Chemical Co | Process for the galvanic deposition of a zinc coating on magnesium and its alloys |
| CN103938240A (en) * | 2013-06-03 | 2014-07-23 | 无锡市锡山区鹅湖镇荡口青荡金属制品厂 | Combined plating solution for electroplating chromium on surface of magnesium alloy die casting |
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