CA2019568A1 - Coins coated with nickel, copper and nickel and process for making such coins - Google Patents
Coins coated with nickel, copper and nickel and process for making such coinsInfo
- Publication number
- CA2019568A1 CA2019568A1 CA2019568A CA2019568A CA2019568A1 CA 2019568 A1 CA2019568 A1 CA 2019568A1 CA 2019568 A CA2019568 A CA 2019568A CA 2019568 A CA2019568 A CA 2019568A CA 2019568 A1 CA2019568 A1 CA 2019568A1
- Authority
- CA
- Canada
- Prior art keywords
- nickel
- coins
- current density
- copper
- making
- 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.)
- Granted
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
- C25D5/60—Electroplating characterised by the structure or texture of the layers
- C25D5/615—Microstructure of the layers, e.g. mixed structure
- C25D5/617—Crystalline layers
-
- 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
- C25D5/10—Electroplating with more than one layer of the same or of different metals
- C25D5/12—Electroplating with more than one layer of the same or of different metals at least one layer being of nickel or chromium
-
- 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
-
- 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
- C25D5/60—Electroplating characterised by the structure or texture of the layers
- C25D5/605—Surface topography of the layers, e.g. rough, dendritic or nodular layers
-
- 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
- C25D5/60—Electroplating characterised by the structure or texture of the layers
- C25D5/605—Surface topography of the layers, e.g. rough, dendritic or nodular layers
- C25D5/611—Smooth layers
-
- 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
- C25D5/60—Electroplating characterised by the structure or texture of the layers
- C25D5/623—Porosity of the layers
-
- 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
- C25D5/627—Electroplating characterised by the visual appearance of the layers, e.g. colour, brightness or mat appearance
-
- C—CHEMISTRY; METALLURGY
- C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
- C25D—PROCESSES FOR THE ELECTROLYTIC OR ELECTROPHORETIC PRODUCTION OF COATINGS; ELECTROFORMING; APPARATUS THEREFOR
- C25D7/00—Electroplating characterised by the article coated
- C25D7/005—Jewels; Clockworks; Coins
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Crystallography & Structural Chemistry (AREA)
- Electroplating Methods And Accessories (AREA)
- Electroplating And Plating Baths Therefor (AREA)
Abstract
This invention overcomes problems such as pinholes and blisters in making plated coin blanks and similar articles. A ferrous metal blank is electroplated with a strike of nickel, following which a coating of copper is applied at an initial low current density followed by full current density to minimize bridging.
Preferably an outer layer of nickel is applied, also at an initial low current density , followed by full current density. Annealing before or after application of the final layer of nickel is advisable. This invention also relates to the resulting coin blank and coins.
Preferably an outer layer of nickel is applied, also at an initial low current density , followed by full current density. Annealing before or after application of the final layer of nickel is advisable. This invention also relates to the resulting coin blank and coins.
Priority Applications (7)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CA002019568A CA2019568C (en) | 1990-06-21 | 1990-06-21 | Coins coated with nickel, copper and nickel and process for making such coins |
ZA913677A ZA913677B (en) | 1990-06-21 | 1991-05-15 | Coins coated with nickel,copper and nickel and process for making such coins |
GB9111184A GB2245283B (en) | 1990-06-21 | 1991-05-23 | Coins coated with nickel, copper and nickel and process for making such coins |
DE4120291A DE4120291C2 (en) | 1990-06-21 | 1991-06-19 | Blank for a coin and the like and method for its production |
CN91104008A CN1022699C (en) | 1990-06-21 | 1991-06-21 | Coins and the like, prodn. method therefor |
US07/723,325 US5139886A (en) | 1990-06-21 | 1991-06-28 | Coins coated with nickel, copper and nickel |
US07/801,636 US5151167A (en) | 1990-06-21 | 1991-12-04 | Coins coated with nickel, copper and nickel and process for making such coins |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CA002019568A CA2019568C (en) | 1990-06-21 | 1990-06-21 | Coins coated with nickel, copper and nickel and process for making such coins |
Publications (2)
Publication Number | Publication Date |
---|---|
CA2019568A1 true CA2019568A1 (en) | 1991-12-21 |
CA2019568C CA2019568C (en) | 1998-11-24 |
Family
ID=4145302
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CA002019568A Expired - Lifetime CA2019568C (en) | 1990-06-21 | 1990-06-21 | Coins coated with nickel, copper and nickel and process for making such coins |
Country Status (5)
Country | Link |
---|---|
CN (1) | CN1022699C (en) |
CA (1) | CA2019568C (en) |
DE (1) | DE4120291C2 (en) |
GB (1) | GB2245283B (en) |
ZA (1) | ZA913677B (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP2143829A2 (en) | 2008-06-13 | 2010-01-13 | Monnaie Royale Canadienne/Royal | Control of electromagnetic signals of coins through multi-ply plating technology |
US9540735B2 (en) | 2011-09-13 | 2017-01-10 | Royal Canadian Mint | Zincating aluminum |
Families Citing this family (17)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE19646657C1 (en) * | 1996-11-12 | 1998-01-08 | Krupp Vdm Gmbh | Copper-containing stainless steel clad laminate |
JP3253945B2 (en) * | 1999-01-25 | 2002-02-04 | 三桜工業株式会社 | Coated steel |
DE10303835A1 (en) * | 2003-01-30 | 2004-08-12 | Saxonia Eurocoin Gmbh Galvanik Und Ronden | Nordic gold alloy for mirror-finish coinage striking, used to produce collectors series, has surface coated with stamping enhancement agent |
FI121815B (en) * | 2007-06-20 | 2011-04-29 | Outotec Oyj | Process for coating a structural material with functional metal and product made by the process |
CN101999783B (en) * | 2009-09-03 | 2012-11-14 | 上海造币有限公司 | Electroplating mosaic tricolor coin (badge) and suit cutting/manufacturing process thereof |
DE102009041250B4 (en) * | 2009-09-11 | 2011-09-01 | Umicore Galvanotechnik Gmbh | Process for the electrolytic copper plating of zinc die casting with reduced tendency to blister |
DE102010044741A1 (en) | 2010-09-08 | 2012-03-08 | Saxonia Eurocoin Gmbh | Coin blank for manufacturing coin, comprises core made of ferrous material, which has cover layer made of nickel provided close to surface of finely dispersed copper doping |
CN103957742B (en) * | 2011-03-28 | 2017-07-28 | 加拿大皇家铸币厂 | System and method for reducing the present material on cast article |
KR101395679B1 (en) * | 2011-05-27 | 2014-05-15 | 롬 앤드 하스 일렉트로닉 머트어리얼즈, 엘.엘.씨. | Polymer composition and photoresist comprising the polymer |
DE102011121952A1 (en) | 2011-12-22 | 2013-06-27 | Saxonia Eurocoin Gmbh | Galvanically coated coin blank |
CA2866193A1 (en) | 2012-02-27 | 2013-09-06 | Saxonia Eurocoin Gmbh | Coin blank and method for the production thereof |
CN103290447A (en) * | 2013-05-30 | 2013-09-11 | 延康汽车零部件如皋有限公司 | Pre-copper plating second-order up-flowing process |
CN107299369B (en) * | 2016-04-15 | 2019-08-20 | 南京造币有限公司 | A kind of surface cladding cupro-nickel coin class product and its manufacturing method |
CN105750842B (en) * | 2016-04-29 | 2018-03-13 | 成都九十度工业产品设计有限公司 | A kind of processing method of noble metal commemorative coin |
CN106191976B (en) * | 2016-08-30 | 2018-07-06 | 南京中钞长城金融设备有限公司 | A kind of noble metal plating line system |
CN106191972B (en) * | 2016-08-30 | 2018-07-06 | 南京中钞长城金融设备有限公司 | A kind of noble metal plated film wire holder |
CN107117690B (en) * | 2017-06-22 | 2021-01-22 | 天津碧水源膜材料有限公司 | Device and method for treating refractory pollutants through electrocatalytic oxidation |
Family Cites Families (12)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB523322A (en) * | 1937-12-30 | 1940-07-11 | Revere Copper & Brass Inc | Improvements in and relating to methods of and apparatus for coating stainless steelsurfaces |
GB897279A (en) * | 1960-02-29 | 1962-05-23 | Harshaw Chem Corp | Corrosion resistant metal coatings |
US3616286A (en) * | 1969-09-15 | 1971-10-26 | United Aircraft Corp | Automatic process and apparatus for uniform electroplating within porous structures |
CA1015905A (en) * | 1974-09-16 | 1977-08-23 | Arthur G. Mcmullen | Nickel clad steel coinage blank |
US4279968A (en) * | 1979-04-20 | 1981-07-21 | Sherritt Gordon Mines Limited | Coins and similarly disc-shaped articles |
EP0032960B1 (en) * | 1980-01-23 | 1983-10-19 | The Dow Chemical Company | Method of electroplating a porous body |
GB2102708B (en) * | 1981-07-28 | 1984-11-21 | Sherritt Gordon Mines Ltd | Process for producing coin blanks |
CA1198073A (en) * | 1981-07-28 | 1985-12-17 | Michael J.H. Ruscoe | Process for producing coin blanks |
US4418125A (en) * | 1982-12-06 | 1983-11-29 | Henricks John A | Multi-layer multi-metal electroplated protective coating |
US4551184A (en) * | 1983-06-13 | 1985-11-05 | Inco Limited | Process for obtaining a composite material and composite material obtained by said process |
CA1219708A (en) * | 1984-05-01 | 1987-03-31 | Michael J.H. Ruscoe | Aureate coins, medallions and tokens |
CA2013639C (en) * | 1990-04-02 | 1998-06-23 | Mitsuhiro Yasuda | Electroplated blank for coins, medallions and tokens |
-
1990
- 1990-06-21 CA CA002019568A patent/CA2019568C/en not_active Expired - Lifetime
-
1991
- 1991-05-15 ZA ZA913677A patent/ZA913677B/en unknown
- 1991-05-23 GB GB9111184A patent/GB2245283B/en not_active Expired - Lifetime
- 1991-06-19 DE DE4120291A patent/DE4120291C2/en not_active Expired - Lifetime
- 1991-06-21 CN CN91104008A patent/CN1022699C/en not_active Expired - Lifetime
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP2143829A2 (en) | 2008-06-13 | 2010-01-13 | Monnaie Royale Canadienne/Royal | Control of electromagnetic signals of coins through multi-ply plating technology |
US9447515B2 (en) | 2008-06-13 | 2016-09-20 | Royal Canadian Mint | Control of electromagnetic signals of coins through multi-ply plating technology |
US9540735B2 (en) | 2011-09-13 | 2017-01-10 | Royal Canadian Mint | Zincating aluminum |
Also Published As
Publication number | Publication date |
---|---|
DE4120291C2 (en) | 1996-08-01 |
CN1057496A (en) | 1992-01-01 |
GB2245283A (en) | 1992-01-02 |
DE4120291A1 (en) | 1992-01-09 |
GB9111184D0 (en) | 1991-07-17 |
CA2019568C (en) | 1998-11-24 |
GB2245283B (en) | 1994-12-14 |
CN1022699C (en) | 1993-11-10 |
ZA913677B (en) | 1992-02-26 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
EEER | Examination request | ||
MKEX | Expiry |