CN106555075A - A kind of rose golden coinage Cu alloy material and preparation method thereof - Google Patents
A kind of rose golden coinage Cu alloy material and preparation method thereof Download PDFInfo
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- CN106555075A CN106555075A CN201510618256.3A CN201510618256A CN106555075A CN 106555075 A CN106555075 A CN 106555075A CN 201510618256 A CN201510618256 A CN 201510618256A CN 106555075 A CN106555075 A CN 106555075A
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C9/00—Alloys based on copper
- C22C9/06—Alloys based on copper with nickel or cobalt as the next major constituent
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C1/00—Making non-ferrous alloys
- C22C1/02—Making non-ferrous alloys by melting
- C22C1/03—Making non-ferrous alloys by melting using master alloys
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Abstract
The present invention relates to a kind of rose golden coinage Cu alloy material, it is characterised in that：The formula of described Cu alloy material is as follows：The Y of Ce, 0.0005-0.15% of B, 0.0005-0.15% of Fe, 0.001-0.05% of Al, 0.5-3.5% of Ni, 0.5-3% of percentage by weight 1-8%, balance of Cu, the percentage by weight sum of above-mentioned each composition is 100%.In smelting process, copper is added in the form of cathode copper, and Ni is added with CuNi15 intermediate alloy forms, and Fe is added with CuFe16.5 intermediate alloy forms, B is added with CuB3 intermediate alloy forms, and Al and rare earth element are then added with simple substance element form.Using special smelting mode, by adding specific alloying element, make copper alloy color in special rose golden and special electromagnetic parameter, be provided simultaneously with the corrosion resisting property of suitable coinage.
Description
Technical field
The present invention relates to the technical field of Cu alloy material, specifically a kind of rose golden
Coinage Cu alloy material and preparation method thereof.
Background technology
Application accounting of the copper alloy in world's coin up to more than 60%, is making for main flow
Coin material, particularly developed country or economy, in coin system, almost all is used
Copper alloy.Distinguished according to material, coinage copper alloy mainly has CuNi series, CuAlNi
Series, CuNiAl series, CuNiZn series, CuZnNi series, CuZnSn are serial
With CuAl series etc..Classify according to alloy series, be broadly divided into pyrite, copper-nickel alloy and green grass or young crops
Copper, in terms of color and luster then based on golden yellow and silvery white.
The current coinage materials of China mainly include that nicke-clad steel, copper covered steel, rustless steel, aluminum are closed
Gold and copper alloy, color is silvery white and golden yellow, and the wherein distinctive coinage copper of China is closed
Gold mainly includes flavous HSn72-1-1 and HAl76-2 copper alloys, and silvery white
BZn15-17 copper alloys, there is not yet the coinage copper alloy of other colors.
For coinage materials, in addition to color and luster is important index, machine-readable performance and corrosion resistance
The anti-counterfeiting performance and trafficability performance of coinage materials can be determined, thus is also important index.
The content of the invention
It is an object of the invention to provide a kind of rose golden coinage Cu alloy material and its
Preparation method, it can overcome some shortcomings of coinage Cu alloy material in prior art.
To achieve these goals, the technical scheme is that：A kind of rose golden coinage
With Cu alloy material, it is characterised in that：The formula of described Cu alloy material is as follows：Weight
Fe, 0.001-0.05% of Al, 0.5-3.5% of Ni, 0.5-3% of percentage ratio 1-8%
B, 0.0005-0.15% Ce, 0.0005-0.15% Y, balance of Cu, it is above-mentioned
The percentage by weight sum of each composition is 100%.
A kind of preparation method of rose golden coinage Cu alloy material, it is characterised in that：
Described preparation method includes the steps：A, copper alloy are smelted raw material and are prepared, according to
Concrete condition and scaling loss ratio are smelted, each raw-material weight is that cathode copper is than respectively
15.7-89.3%, CuNi15 are 7-56.1%, and CuFe16.5 is 3-21.2%, and CuB3 is
0.06-2.8%, Al are that 0.6-3.5%, Ce and Y are 0.001-0.3%, and melting prepares,
Burner hearth preheating (500-600 DEG C, the time is 20-60 minutes)；B, be firstly added cathode copper and
CuNi15, burner hearth be sufficiently stirred for after being warming up to 1250 DEG C fusing, after 1 hour add aluminum and
CuFe16.5,1250 DEG C of keeping temperature continue stirring；C, it is eventually adding CuB3 intermediate alloys
With Rare-Earth Ce and Y, after stirring, 1-2 minutes are stood；D, come out of the stove after cast, after casting
Product meet coinage copper alloy color and luster scope.
During use the main alloy element that contains of copper alloy of the present invention be copper, nickel, aluminum,
Ferrum, boron, rare-earth element cerium and yttrium, in smelting process, copper is carried out in the form of cathode copper
Add, Ni is added with CuNi15 intermediate alloy forms, and Fe is with CuFe16.5
Between alloy form added, B is added with CuB3 intermediate alloy forms, Al
Then added with simple substance element form with rare earth element.Using special smelting mode, lead to
Cross and add specific alloying element, make copper alloy color in special rose golden and difference
In other coinage materials such as 1 yuan of RMB (MI is 160), 5 jiaos (MI is 157) and 1
The special electromagnetic parameter at angle (MI is 157), is provided simultaneously with suitable coinage performance, such as resistance to
Corrosion energy.
Specific embodiment
With reference to embodiment, the invention will be further described.
A kind of rose golden coinage Cu alloy material of the present invention, itself and prior art
Difference be：The formula of described Cu alloy material is as follows：Percentage by weight 1-8%'s
B, 0.0005-0.15% of Fe, 0.001-0.05% of Al, 0.5-3.5% of Ni, 0.5-3%
Ce, 0.0005-0.15% Y, balance of Cu, the weight percent of above-mentioned each composition
It is 100% than sum.
The formula of described Cu alloy material is as follows：Ni, 1-1.5% of percentage by weight 3-6%
Al, 1.5-3% Fe, 0.001-0.03% B, 0.001-0.05% Ce,
The Y of 0.001-0.05%, balance of Cu, the percentage by weight sum of above-mentioned each composition is
100%.
A kind of preparation method of rose golden coinage Cu alloy material, it is characterised in that：
Described preparation method includes the steps：A, copper alloy are smelted raw material and are prepared,
According to concrete condition and scaling loss ratio is smelted, each raw-material weight is that cathode copper is than respectively
15.7-89.3%, CuNi15 are 7-56.1%, and CuFe16.5 is 3-21.2%, and CuB3 is
0.06-2.8%, Al are that 0.6-3.5%, Ce and Y are 0.001-0.3%, and melting prepares,
Burner hearth preheats 500-600 DEG C, and the time is 20-60 minutes；B, it is firstly added cathode copper
And CuNi15, burner hearth be sufficiently stirred for after being warming up to 1250 DEG C fusing, after 1 hour add
Aluminum and CuFe16.5,1250 DEG C of keeping temperature continue stirring；C, it is eventually adding CuB3
Intermediate alloy and Rare-Earth Ce and Y, stand 1-2 minutes after stirring；D, come out of the stove after carry out
Casting, the product after casting meet coinage copper alloy color and luster scope.
In b step, CuNi adopts CuNi15, CuFe to adopt CuFe16.5；In whipping process,
Al is generated after aluminum oxidation2O3Oxide-film, conversion ratio is up to 15%.Aluminum and copper exist larger when merging
Heat effect, raise can melt temperatures at localized regions, a large amount of air-breathings of melt and tight can be caused
Reheating is damaged, thus is adding aluminum to add CuNi15 to avoid melt overheat simultaneously.
In step c, CuB adopts CuB3, rare earth to adopt Ce and Y.In Step d, after casting
Product reach red green angle value a and reach 0.5-20, blue yellow chrominance value b reaches 5-28.Copper
The addition of main alloy element in alloy, has important impact to color and luster.Nickel, ferrum element add
Plus the chromatic value a and b of reduction copper alloy, make alloy tend to silvery white, the effect of nickel is obvious
It is better than ferrum.The addition of aluminium element, will improve the chromatic value a and b of copper alloy, and the shadow to b
Sound becomes apparent from, so that alloy tends to golden yellow.Copper alloy electromagnetic parameter depends primarily on alloy
Constituent content, wherein, nickel and ferrum are main impact elements, and alloy content is higher, electromagnetism ginseng
Number change is bigger.The corrosion resistance of copper alloy depends on alloying element content, wherein, nickel and aluminum are
Main impact element.Alloying element content is higher, and corrosion resistance is higher.
Embodiment 1
Rose golden coinage copper alloy component requirements
1 rose golden coinage copper alloy composition range of table
Product after being implemented according to table 1 can reach the following requirement that should be able to be gone up：
Rose golden coinage copper alloy color and luster is required
2 rose golden coinage copper alloy of table requires color and luster scope
Note：According to CIE-lab standards, a is red value of green, and b is blue yellow value.
The electromagnetic parameter of rose golden coinage copper alloy and corrosion resistance are required
3 rose golden coinage copper alloy of table requires electromagnetic parameter and corrosion resistance scope
Note：Corrosive environment 3.5%NaCl aqueous solutions, room temperature.Electromagnetic parameter is the machine-readable index of coin identification apparatus.
Embodiment 2
The coinage copper alloy composition of 4 embodiment 2 of table
According to the copper alloy that 4 composition of table is smelted, color is deeper rose golden, and corresponding copper alloy chromatic value a is
20, b is 5.The electromagnetic parameter MI of the composition copper alloy is 1, and corrosion rate is 0.03mm/a.
The preparation method of above-mentioned rose golden coinage Cu alloy material, itself and prior art
Difference be：Described preparation method includes the steps：A, copper alloy are smelted
Raw material is prepared, and according to concrete condition and scaling loss ratio is smelted, each raw-material weight is than difference
Be, cathode copper be 89.3%, CuNi15 be 7%, CuFe16.5 be that 3%, CuB3 is
0.06%, Al are 0.6%, Ce and Y is 0.001%, and melting prepares, burner hearth preheating
500-600 DEG C, the time is 20-60 minutes；B, cathode copper and CuNi15 are firstly added,
Burner hearth is sufficiently stirred for fusing after being warming up to 1250 DEG C, aluminum and CuFe16.5 are added after 1 hour,
1250 DEG C of keeping temperature continues stirring；C, it is eventually adding CuB3 intermediate alloys and rare earth
Ce and Y, stands 1-2 minutes after stirring；D, come out of the stove after cast, after casting
Product meets coinage copper alloy color and luster scope.
In b step, CuNi adopts CuNi15, CuFe to adopt CuFe16.5；In whipping process,
Al is generated after aluminum oxidation2O3Oxide-film, conversion ratio is up to 15%.Aluminum and copper exist larger when merging
Heat effect, raise can melt temperatures at localized regions, a large amount of air-breathings of melt and tight can be caused
Reheating is damaged, thus is adding aluminum to add CuNi15 to avoid melt overheat simultaneously.
In step c, CuB adopts CuB3, rare earth to adopt Ce and Y.In Step d, after casting
Product reach red green angle value a and reach 20, blue yellow chrominance value b reaches 5.It is main in copper alloy
The addition of alloying element is wanted, has important impact to color and luster.Nickel, the addition of ferrum element are reduced
The chromatic value a and b of copper alloy, makes alloy tend to silvery white, and the effect of nickel is significantly stronger than ferrum.
The addition of aluminium element, will improve the chromatic value a and b of copper alloy, and the impact to b becomes apparent from,
So that alloy tends to golden yellow.Copper alloy electromagnetic parameter depends primarily on alloying element content,
Wherein, nickel and ferrum are main impact elements, and alloy content is higher, and electromagnetic parameter change is bigger.
The corrosion resistance of copper alloy depends on alloying element content, wherein, nickel and aluminum are main impact units
Element.Alloying element content is higher, and corrosion resistance is higher.
Embodiment 3
The coinage copper alloy composition of 5 embodiment 3 of table
According to the copper alloy that 5 composition of table is smelted, color is shallower rose golden, and corresponding copper alloy chromatic value a is
0.5, b is 28.Corresponding electromagnetic parameter MI is 100, and corrosion rate is 0.005mm/a.
The preparation method of above-mentioned rose golden coinage Cu alloy material, itself and prior art
Difference be：Described preparation method includes the steps：A, copper alloy are smelted
Raw material is prepared, and according to concrete condition and scaling loss ratio is smelted, each raw-material weight is than difference
Be, cathode copper be 15.7%, CuNi15 be 56.1%, CuFe16.5 be 21.2%, CuB3
For 2.8%, Al be 3.5%, Ce and Y is 0.3%, and melting prepares, burner hearth preheating
500-600 DEG C, the time is 20-60 minutes；B, cathode copper and CuNi15 are firstly added,
Burner hearth is sufficiently stirred for fusing after being warming up to 1250 DEG C, aluminum and CuFe16.5 are added after 1 hour,
1250 DEG C of keeping temperature continues stirring；C, it is eventually adding CuB3 intermediate alloys and rare earth
Ce and Y, stands 1-2 minutes after stirring；D, come out of the stove after cast, after casting
Product meets coinage copper alloy color and luster scope.
In b step, CuNi adopts CuNi15, CuFe to adopt CuFe16.5；In whipping process,
Al is generated after aluminum oxidation2O3Oxide-film, conversion ratio is up to 15%.Aluminum and copper exist larger when merging
Heat effect, raise can melt temperatures at localized regions, a large amount of air-breathings of melt and tight can be caused
Reheating is damaged, thus is adding aluminum to add CuNi15 to avoid melt overheat simultaneously.
In step c, CuB adopts CuB3, rare earth to adopt Ce and Y.In Step d, after casting
Product reach red green angle value a and reach 0.5, blue yellow chrominance value b reaches 28.In copper alloy
The addition of main alloy element, has important impact to color and luster.Nickel, the addition of ferrum element are dropped
The chromatic value a and b of dilute copper alloy, makes alloy tend to silvery white, and the effect of nickel is significantly stronger than ferrum.
The addition of aluminium element, will improve the chromatic value a and b of copper alloy, and the impact to b becomes apparent from,
So that alloy tends to golden yellow.Copper alloy electromagnetic parameter depends primarily on alloying element content,
Wherein, nickel and ferrum are main impact elements, and alloy content is higher, and electromagnetic parameter change is bigger.
The corrosion resistance of copper alloy depends on alloying element content, wherein, nickel and aluminum are main impact units
Element.Alloying element content is higher, and corrosion resistance is higher.
Embodiment 4
The coinage copper alloy composition of 6 embodiment 4 of table
According to the copper alloy that 6 composition of table is smelted, color is suitable rose golden, corresponding copper alloy
Chromatic value a is 15.5 for 8, b.Corresponding electromagnetic parameter MI is 40, and corrosion rate is 0.019
mm/a。
The preparation method of above-mentioned rose golden coinage Cu alloy material, itself and prior art
Difference be：Described preparation method includes the steps：A, copper alloy are smelted
Raw material is prepared, and according to concrete condition and scaling loss ratio is smelted, each raw-material weight is than difference
Be, cathode copper be 56.1%, CuNi15 be 30.5%, CuFe16.5 be 12.1%, CuB3
For 0.11%, Al be 1.2%, Ce and Y is 0.005%, and melting prepares, and burner hearth is pre-
Hot 500-600 DEG C, the time is 20-60 minutes；B, cathode copper and CuNi15 are firstly added,
Burner hearth is sufficiently stirred for fusing after being warming up to 1250 DEG C, aluminum and CuFe16.5 are added after 1 hour,
1250 DEG C of keeping temperature continues stirring；C, it is eventually adding CuB3 intermediate alloys and rare earth
Ce and Y, stands 1-2 minutes after stirring；D, come out of the stove after cast, after casting
Product meets coinage copper alloy color and luster scope.
In b step, CuNi adopts CuNi15, CuFe to adopt CuFe16.5；In whipping process,
Al is generated after aluminum oxidation2O3Oxide-film, conversion ratio is up to 15%.Aluminum and copper exist larger when merging
Heat effect, raise can melt temperatures at localized regions, a large amount of air-breathings of melt and tight can be caused
Reheating is damaged, thus is adding aluminum to add CuNi15 to avoid melt overheat simultaneously.
In step c, CuB adopts CuB3, rare earth to adopt Ce and Y.In Step d, pour
Product after casting reaches red green angle value a and reaches 8, and blue yellow chrominance value b reaches 15.5.
The addition of main alloy element in copper alloy, has important impact to color and luster.Nickel, ferrum unit
The addition of element reduces the chromatic value a and b of copper alloy, makes alloy tend to silvery white, nickel
Effect be significantly stronger than ferrum.The addition of aluminium element, by improve copper alloy chromatic value a and
B, and the impact to b becomes apparent from, so that alloy tends to golden yellow.Copper alloy electromagnetism
Parameter depends primarily on alloying element content, wherein, nickel and ferrum are main impact elements,
Alloy content is higher, and electromagnetic parameter change is bigger.The corrosion resistance of copper alloy depends on alloy
Constituent content, wherein, nickel and aluminum are main impact elements.Alloying element content is higher,
Corrosion resistance is higher.
Above content is made for the present invention further specifically with reference to specific preferred implementation
It is bright, it is impossible to assert that the present invention is embodied as being confined to above-mentioned these explanations.For institute of the present invention
For the those of ordinary skill of category technical field, without departing from the inventive concept of the premise, also
Some simple deduction or replace can be made, protection scope of the present invention should be all considered as belonging to.
Claims (6)
1. a kind of rose golden coinage Cu alloy material, it is characterised in that：The formula of described Cu alloy material is as follows：The Y of Ce, 0.0005-0.15% of B, 0.0005-0.15% of Fe, 0.001-0.05% of Al, 0.5-3.5% of Ni, 0.5-3% of percentage by weight 1-8%, balance of Cu, the percentage by weight sum of above-mentioned each composition is 100%.
2. a kind of rose golden coinage Cu alloy material, it is characterised in that：The formula of described Cu alloy material is as follows：The Y of Ce, 0.001-0.05% of B, 0.001-0.05% of Fe, 0.001-0.03% of Al, 1.5-3% of Ni, 1-1.5% of percentage by weight 3-6%, balance of Cu, the percentage by weight sum of above-mentioned each composition is 100%.
3. a kind of preparation method of rose golden coinage Cu alloy material, it is characterised in that：Described preparation method includes the steps：A, copper alloy are smelted raw material and are prepared, according to smelting concrete condition and scaling loss ratio, each raw-material weight is that cathode copper is 15.7-89.3%, and CuNi15 is 7-56.1% than respectively, CuFe16.5 is 3-21.2%, CuB3 is 0.06-2.8%, and Al is that 0.6-3.5%, Ce and Y are 0.001-0.3%, melting prepares, burner hearth preheating 500-600oC, time are 20-60 minutes；B, cathode copper and CuNi15 are firstly added, burner hearth is warming up to 1250
oFusing is sufficiently stirred for after C, aluminum and CuFe16.5, keeping temperature 1250 after 1 hour, is added oC continues stirring；C, CuB3 intermediate alloys and Rare-Earth Ce and Y are eventually adding, after stirring, stand 1-2 minutes；D, come out of the stove after cast, the product after casting meets coinage copper alloy color and luster scope.
4. the preparation method of a kind of rose golden coinage Cu alloy material according to claim 3, it is characterised in that：In b step, CuNi adopts CuNi15, CuFe to adopt CuFe16.5；In whipping process, Al after aluminum oxidation, is generated2O3Oxide-film, conversion ratio reach 15%.
5. the preparation method of a kind of rose golden coinage Cu alloy material according to claim 3, it is characterised in that：In step c, CuB adopts CuB3, rare earth to adopt Ce and Y.
6. the preparation method of a kind of rose golden coinage Cu alloy material according to claim 3, it is characterised in that：In Step d, the product after casting reaches red green angle value a and reaches 0.5-20, and blue yellow chrominance value b reaches 5-28.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114717435A (en) * | 2022-04-29 | 2022-07-08 | 中国铝业股份有限公司 | High-strength electromagnetic shielding copper alloy and preparation method thereof |
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| JPH11279671A (en) * | 1998-03-26 | 1999-10-12 | Japan Mikaroi:Kk | Special copper alloy with corrosion resistance and high hardness |
| JP2004307905A (en) * | 2003-04-03 | 2004-11-04 | Sumitomo Metal Ind Ltd | Cu ALLOY, AND ITS PRODUCTION METHOD |
| CN102676877A (en) * | 2012-05-07 | 2012-09-19 | 金川集团有限公司 | Iron white copper alloy and preparation method thereof |
| CN102899526A (en) * | 2011-07-26 | 2013-01-30 | 中国印钞造币总公司 | Coinage-used golden yellow copper alloy material and preparation method thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| US4589938A (en) * | 1984-07-16 | 1986-05-20 | Revere Copper And Brass Incorporated | Single phase copper-nickel-aluminum-alloys |
| JPH11279671A (en) * | 1998-03-26 | 1999-10-12 | Japan Mikaroi:Kk | Special copper alloy with corrosion resistance and high hardness |
| JP2004307905A (en) * | 2003-04-03 | 2004-11-04 | Sumitomo Metal Ind Ltd | Cu ALLOY, AND ITS PRODUCTION METHOD |
| CN102899526A (en) * | 2011-07-26 | 2013-01-30 | 中国印钞造币总公司 | Coinage-used golden yellow copper alloy material and preparation method thereof |
| CN102676877A (en) * | 2012-05-07 | 2012-09-19 | 金川集团有限公司 | Iron white copper alloy and preparation method thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN114717435A (en) * | 2022-04-29 | 2022-07-08 | 中国铝业股份有限公司 | High-strength electromagnetic shielding copper alloy and preparation method thereof |
| CN114717435B (en) * | 2022-04-29 | 2023-01-20 | 中国铝业股份有限公司 | High-strength electromagnetic shielding copper alloy and preparation method thereof |
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