CN102031413A - High-elasticity copper alloy and preparation method thereof - Google Patents
High-elasticity copper alloy and preparation method thereof Download PDFInfo
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- CN102031413A CN102031413A CN2010106015040A CN201010601504A CN102031413A CN 102031413 A CN102031413 A CN 102031413A CN 2010106015040 A CN2010106015040 A CN 2010106015040A CN 201010601504 A CN201010601504 A CN 201010601504A CN 102031413 A CN102031413 A CN 102031413A
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Abstract
The invention discloses a high-elasticity copper alloy comprising the following materials in percentage by weight: 65%-80% of copper, 1.5%-3.0% of aluminum, 0.5%-2.0% of nickel, 0%-0.01% of cerium and the balance of zinc. A preparation method of the high-elasticity copper alloy comprises the following steps of: smelting the raw materials at 1100-1200 DEG C; drawing and casting into cast ingots at 1000-1050 DEG C; carrying out hot rolling on the cast ingots at 860-1000 DEG C; carrying out face milling, and then carrying out cold rolling to obtain the high-elasticity copper alloy, wherein the cold rolling includes rough rolling with annealing at 600-750 DEG C for 3-6 hours, medium rolling with the annealing at 650-700 DEG C for 3-6 hours and fine rolling with the annealing at 550-600 DEG C for 3-6 hours. The high-elasticity copper alloy not only has excellent property, but also has lower cost, good market prospect and economic benefit.
Description
Technical field
The present invention relates to a kind of snappiness copper alloy and be used to prepare the method for this snappiness copper alloy.
Background technology
Electric connector connector in the electronic product, because of its job specification, its manufactured materials need have conduction and elasticity dual-use function simultaneously concurrently, needs to adopt a kind of special conductive elastomer-elastic copper alloy usually.Along with the requirement of electronic product, the performance of the elastic copper alloy of making the electric connector connector is also had higher requirement to the development of multi-functional, miniaturization, high integration, highly reliable, long lifetime direction.Have good processing properties, reliably Elastic Contact performance, high-yield strength, high elastic limit, and the snappiness copper alloy of performance such as high proof stress relaxation property, be applied in the manufacturing of electric connector connector.At present, the snappiness copper alloy of large-scale production mainly is a tinbronze, and it is added metallic elements such as tin and makes in 90% above copper by content.And because the fast development of global economy, critical shortage appears in raw material resourceses such as copper, tin, and cost of material is rapidly soaring, is subjected to the influence of the prices of raw and semifnished materials, and the cost of tinbronze is very high.In order to reduce the cost of high-elastic copper alloy, studying the low cost of alternative tinbronze, copper alloy kind with industrialization prospect of production has become the focus and the important development direction of world's snappiness copper base alloy novel material research field, is that the research and development of the low-cost high elastic modulus alloy of purpose become the task of top priority that resource supply and demand contradiction is alleviated in present countries in the world to reduce copper content.
Summary of the invention
The object of the present invention is to provide the low snappiness copper alloy of a kind of cost, and the method for preparing this snappiness copper alloy.
A kind of snappiness copper alloy is characterized in that: this alloy comprises copper 65～80% by weight percentage, aluminium 1.5～3.0%, nickel 0.5～2.0%, the zinc of cerium 0～0.01% and surplus.
A kind of method for preparing above-mentioned snappiness copper alloy is characterized in that: the step that comprises following order:
A, melting; With copper, zinc, aluminium, nickel, cerium raw material 1100 ℃～1200 ℃ following meltings;
B, cast: leave standstill and be cooled to temperature and reach, carry out cast at 1000 ℃～1150 ℃, ingot casting;
C, hot rolling: 860 ℃～1000 ℃ of hot-rolled temperatures, divide 8～11 passages rolling;
D, mill face: to the ingot mill surface after the hot rolling;
E, cold rolling: carry out successively roughing, in roll and finish rolling, the annealing temperature of roughing is 600～750 ℃, annealing time 3～6 hours; In the annealing temperature of rolling be 550～700 ℃, annealing time 3～6 hours; The annealing temperature of finish rolling is 500～650 ℃, annealing time 3～6 hours.
Snappiness copper alloy of the present invention, after tested, the key technical indexes is as follows:
| Tensile strength/MPa | Hardness HV | Unit elongation d/% | Young's modulus/GPa | Specific conductivity/IACS |
| ≥650 | ≥200 | ≥6% | ≥100 | ≥10% |
As seen from the above table, snappiness metal alloy of the present invention, conducts electricity very well at intensity height, elasticity height, and has good processing characteristics.Simultaneously, its copper content only 65～80%, far below tinbronze, and the price of aluminum and zinc is lower, though nickel, cerium cost are higher, its content is low.Therefore, snappiness copper alloy of the present invention has not only had good performance, and its cost is lower simultaneously, has good market outlook and economic benefit.Simultaneously, copper content is low in the alloy, and to alleviating the state in short supply of copper resource, the utilization ratio that improves resource also has great importance.
Embodiment
Embodiment 1,A kind of snappiness copper alloy, each compositions in weight percentage is: copper 65%, aluminium 3.0%, nickel 2.0%, cerium 0.01%, zinc are 29.99%.
Leave standstill after 1100 ℃ of following meltings by the raw material of above-mentioned weight ratio with each component, after temperature dropped to 1000 ℃, cast became ingot casting; Then at 860 ℃ of following minute 8 passage hot rolling ingots; To the ingot mill surface after the hot rolling; Carry out again cold rolling, first roughing, after the roughing 600 ℃ annealing 3 hours; Roll again, in roll the back 550 ℃ annealing 3 hours; Last finish rolling 500 ℃ of annealing 3 hours, makes product after the finish rolling.
Products obtained therefrom, after tested, the key technical indexes is as follows:
| Tensile strength/MPa | Hardness HV | Unit elongation d/% | Young's modulus/GPa | Specific conductivity/IACS |
| 671 | 220 | 7.1 | 112 | 13 |
Embodiment 2,A kind of snappiness copper alloy, each compositions in weight percentage is: copper 80%, aluminium 1.5%, nickel 0.5%, cerium 0.005%, zinc are 17.995%.
Leave standstill after 1200 ℃ of following meltings by the raw material of above-mentioned weight ratio with each component, after temperature dropped to 1050 ℃, cast became ingot casting; At 1000 ℃ of following minute 11 passage hot rolling ingots; To the ingot mill surface after the hot rolling; Carry out again cold rolling, first roughing, after the roughing 750 ℃ annealing 6 hours; Roll again, in roll the back 700 ℃ annealing 6 hours; Last finish rolling 650 ℃ of annealing 6 hours, makes product after the finish rolling.
Products obtained therefrom, after tested, the key technical indexes is as follows:
| Tensile strength/MPa | Hardness HV | Unit elongation d/% | Young's modulus/GPa | Specific conductivity/IACS |
| 667 | 210 | 8.2 | 121 | 17 |
Embodiment 3,A kind of snappiness copper alloy, each compositions in weight percentage is: copper 75%, aluminium 2%, nickel 1.2%, cerium 0.01%, zinc are 21.79%.
Leave standstill after 1150 ℃ of following meltings by the raw material of above-mentioned weight ratio with each component, after temperature dropped to 1025 ℃, cast became ingot casting; Then at 930 ℃ of following minute 10 passage hot rolling ingots; To the ingot mill surface after the hot rolling; Carry out again cold rolling, first roughing, after the roughing 650 ℃ annealing 4 hours; Roll again, in roll the back 600 ℃ annealing 4 hours; Last finish rolling 550 ℃ of annealing 4 hours, makes product after the finish rolling.
Products obtained therefrom, after tested, the key technical indexes is as follows:
| Tensile strength/MPa | Hardness HV | Unit elongation d/% | Young's modulus/GPa | Specific conductivity/IACS |
| 680 | 219 | 6.9 | 104 | 13 |
Claims (2)
1. snappiness copper alloy, it is characterized in that: this alloy comprises copper 65～80% by weight percentage, aluminium 1.5～3.0%, nickel 0.5～2.0%, the zinc of cerium 0～0.01% and surplus.
2. method for preparing above-mentioned snappiness copper alloy is characterized in that: the step that comprises following order:
A, melting; With copper, zinc, aluminium, nickel, cerium raw material 1100 ℃～1200 ℃ following meltings;
B, cast: leave standstill and be cooled to temperature and reach 1000 ℃～1150 ℃, carry out cast, ingot casting;
C, hot rolling: 860 ℃～1000 ℃ of hot-rolled temperatures, divide 8～11 passages rolling;
D, mill face: to the ingot mill surface after the hot rolling;
E, cold rolling: carry out successively roughing, in roll and finish rolling, the annealing temperature of roughing is 600～750 ℃, annealing time 3～6 hours; In the annealing temperature of rolling be 550～700 ℃, annealing time 3～6 hours; The annealing temperature of finish rolling is 500～650 ℃, annealing time 3～6 hours.
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| CN201010601504A CN102031413B (en) | 2010-12-23 | 2010-12-23 | High-elasticity copper alloy and preparation method thereof |
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| CN201010601504A CN102031413B (en) | 2010-12-23 | 2010-12-23 | High-elasticity copper alloy and preparation method thereof |
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| CN102031413A true CN102031413A (en) | 2011-04-27 |
| CN102031413B CN102031413B (en) | 2012-10-24 |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102676872A (en) * | 2012-05-22 | 2012-09-19 | 公牛集团有限公司 | Special high-performance copper alloy for receptacles |
| CN105355259A (en) * | 2015-12-02 | 2016-02-24 | 芜湖楚江合金铜材有限公司 | High zinc copper alloy cutting wire rod and production technology |
| CN109825739A (en) * | 2019-03-29 | 2019-05-31 | 安徽众源新材料股份有限公司 | A kind of fuse cap copper alloy and production technology |
| CN113061777A (en) * | 2021-03-25 | 2021-07-02 | 上海五星铜业股份有限公司 | Brass alloy and preparation method thereof |
| CN113260726A (en) * | 2018-12-19 | 2021-08-13 | 株式会社豊山 | Copper alloy for terminal and connector having excellent bending workability and method for producing the same |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102676872A (en) * | 2012-05-22 | 2012-09-19 | 公牛集团有限公司 | Special high-performance copper alloy for receptacles |
| CN105355259A (en) * | 2015-12-02 | 2016-02-24 | 芜湖楚江合金铜材有限公司 | High zinc copper alloy cutting wire rod and production technology |
| CN105355259B (en) * | 2015-12-02 | 2017-11-10 | 芜湖楚江合金铜材有限公司 | One Albatra metal line of cut material and its production technology |
| CN113260726A (en) * | 2018-12-19 | 2021-08-13 | 株式会社豊山 | Copper alloy for terminal and connector having excellent bending workability and method for producing the same |
| CN113260726B (en) * | 2018-12-19 | 2022-07-08 | 株式会社豊山 | Copper alloy for terminal and connector having excellent bending workability and method for producing the same |
| CN109825739A (en) * | 2019-03-29 | 2019-05-31 | 安徽众源新材料股份有限公司 | A kind of fuse cap copper alloy and production technology |
| CN113061777A (en) * | 2021-03-25 | 2021-07-02 | 上海五星铜业股份有限公司 | Brass alloy and preparation method thereof |
| CN113061777B (en) * | 2021-03-25 | 2022-01-28 | 上海五星铜业股份有限公司 | Brass alloy and preparation method thereof |
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| CN102031413B (en) | 2012-10-24 |
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