CN105274385B - Continuously cast high-strength high-conductivity copper alloy - Google Patents
Continuously cast high-strength high-conductivity copper alloy Download PDFInfo
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- CN105274385B CN105274385B CN201510759406.2A CN201510759406A CN105274385B CN 105274385 B CN105274385 B CN 105274385B CN 201510759406 A CN201510759406 A CN 201510759406A CN 105274385 B CN105274385 B CN 105274385B
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Abstract
The invention discloses continuously cast high-strength high-conductivity copper alloy and a preparation method thereof, and belongs to the field of copper-based electrical engineering alloy. The high-strength high-conductivity copper alloy is prepared from, by weight, 0.05-3.0 parts of Zr, 0.05-3.0 parts of Mo, 0.05-3.0 parts of Yb, 0.05-3.0 parts of Gd, 0.05-3.0 parts of Er and the balance Cu. The high-strength high-conductivity copper alloy prepared through the continuous casting method is uniform in chemical component, continuous feeding, melting and continuous casting can be achieved, large-scale production is achieved, the oxygen content of bar billets is smaller than or equal to 20 ppm, and the defects of oxidization, impurities, loosening, shrinkage and the like are avoided. The alloy machining technology is simple, the yield is high, performance consistency is good, and the alloy has the characteristics of being good in conductivity and heat conductivity, high in room temperature intensity, resistant to abrasion, high in softening temperature and conductivity rate and the like and can be used as conductive rods, resistance welding electrodes, lead frameworks, overhead conductors, commutator segments and other materials in the power industry, the energy industry, the electrical engineering industry, the electronics industry, the electromechanicss industry, the traffic industry and other industries.
Description
Technical field
The present invention relates to a kind of novel high-strength high-conductivity copper alloy and preparation method thereof, belongs to cuprio electrical alloy material neck
Domain.
Background technology
High strength and high conductivity copper alloy is referred to takes into account high intensity and excellent again while with excellent conduction, heat conductivility
The alloy of different high-temperature behavior, its major requirement is that the intensity that alloy is made on the premise of conductivity and thermal conductivity is not lost is carried
It is high.Resistance welding electrode that Cu alloy material is mainly used as in the industries such as electric power, electrician, electronics, the energy, traffic, lead frame, lead
The materials such as electric bridge, it may also be used for substitute poisonous beryllium-bronze, Allen's metal etc. and make relay bearing and high-low pressure interconnecting devices etc..
At present, both at home and abroad this kind of alloy is mainly had by its chemical composition, intensity and conductivity etc.：Cu-Cr-Zr、Cu-Ag、Cu-Mg、Cu-
Sn, Cu-Cr or Zr alloy, Cu/Al2O3, Cu/RE2O3Deng, tensile strength 500MPa～600MPa, conductivity 80%～90%
IACS, this kind of alloy has higher mechanical property and conductive, heat conductivility.
In recent years, with the development of high-strength highly-conductive electric material related application industry, such as high ferro, large scale integrated circuit, super
High voltage power transmission and transforming circuit etc., puts forward higher requirement, for example to traditional copper alloy as electric material：Keep high in room temperature and high temperature
Conduction, heat conductivity, hardness is high, wear-resistant, with good non-deformability and processing characteristics etc..For many years, the field
The research of new material focuses primarily upon copper-transition element, such as：Cu-Zr, Cu-Cr, Cu-Ni-Ti, Cu-Be-Co etc..Prepare
Technology is the methods such as alloy casting, processing and heat treatment.Reinforcing means are working hardening, solution strengthening or ageing strengthening etc..Though
So these methods make moderate progress to the performance and use range of Cu alloy material, but hard to materials conductive rate, elevated temperature strength, high temperature
Degree and the thermostrength such as softening temperature are almost without significantly improving.
Kunming Institute of Precious Metals on the basis of long campaigns electrical alloy and rare earth element applied research and exploitation,
Select rare metal (Zr, Mo) with mixed heavy rare earth element (Yb, Gd, Er) as additive, find rare metal and rare earth unit
Element effectively promotes the structure refinement process of Cu alloys, forms compound and rare earth oxide between heterogeneous metal, and uniformly
Be distributed on the transgranular and crystal boundary of alloy, hence it is evident that improve materials microstructure structure, improve the mechanical property and height of material
Warm intensity, softening temperature etc., however, less to the plasticity and resistivity effects of alloy material.
Therefore, using addition rare metal and mixed rare-earth elements, with reference to vacuum melting alloying, rapid solidification is continuously cast
Make, the optimization of the advanced machining technology such as cold drawn processing and heat treatment it is integrated, be novel copper-based electrical alloy material and product plus
Work provides new way.
The content of the invention
The invention discloses a kind of continuously casting high strength and high conductivity copper alloy and preparation method thereof.The present invention adopts continuous metal cast process
The chemical composition of the CuZrMoYbGdEr alloys of production is uniform, can continuous charging, melting and casting, accomplish scale production, bar stock
Oxygen content≤20PPM, oxide-free, be mingled with, shrinkage cavity, the defect such as loose；Preparation high yield rate, low cost, large-scale production
Copper alloy composition even tissue, performance are unanimously good, good with conductive, heat conductivity, and room temperature strength is high, wear-resistant, softening temperature and
The features such as conductivity is high, Jing following process and heat treatment, alloy has excellent combination property.
1st, the chemical analysis (weight %) of copper alloy of the invention are：0.05～3.0Zr, 0.05～3.0Mo, 0.05～
3.0Yb, 0.05～3.0Gd, 0.05～3.0Er, balance of Cu.
2nd, the preparation method of Cu alloy material is prepared according to following process steps：
(1) (vacuum in frequency smelting furnace in a vacuum：<1×10- 2Pa), by the Zr for according to chemical composition preparing, Mo, Yb,
Gd, Er, Cu element, melting is alloy pig.
(2) after continuous casting furnace being warming up to into 1000 DEG C～1200 DEG C, the alloy pig in step (1) is added, is melted；
The argon that purity >=99.99% is passed through in stove is stirred and protects, and makes alloying component uniform, and oxidative slagging is few.
(3) after alloy is completely melt, refine 30min～40min starts continuously casting, a diameter of Φ of continuous casting bar
10mm- Φ 20mm bars, the speed of continuously casting is 30mm/min～60mm/min.
(4) the complete stove of continuous casting need to such as continue founding, and stove domestic demand stays alloy part material, then carries out by step (1), (2), (3)
Continuously casting, so repeatedly, until having cast all alloys.
(5) cold drawn cogging, using wire drawing machine alloy cogging and processing are carried out, and pass deformation is controlled 20%～30%,
Heat treatment temperature is 600 DEG C～700 DEG C, and the time is 3h～5h.
(6) it is surface-treated, removing surface is carried out using mechanical polishing and hand inspection.
(7) further according to use requirement, then the polish of silk material is carried out, finally prepares CuZrMoYbGdEr high-strength highly-conductives
Copper alloy product.
Specific embodiment
The continuous casting copper zirconium molybdenum ytterbium gadolinium erbium alloy material of the present invention is embodied as being classified as：Physical and mechanical properties of material and soft
Change temperature as shown in table 1.
The technical performance index of the continuous casting CuZrMoYbGdEr alloys of table 1.
Claims (1)
1. a kind of preparation method of Cu alloy material, it is characterised in that be prepared according to following process steps：
(1) in vacuum<1×10- 2In the mid-frequency melting furnace of Pa, by press chemical analysis weight % be 0.05～3.0Zr, 0.05
～3.0Mo, 0.05～3.0Yb, 0.05～3.0Gd, 0.05～3.0Er, balance of Cu, Zr, Mo, Yb, Gd, Er, the Cu for preparing
Element, melting is alloy pig；
(2) after continuous casting furnace being warming up to into 1000 DEG C～1200 DEG C, the alloy pig in step (1) is added, is melted；In stove
The argon for being passed through purity >=99.99% is stirred and protects, and makes alloying component uniform, and oxidative slagging is few；
(3) after alloy is completely melt, refine 30min～40min starts continuously casting, a diameter of Φ of continuous casting bar
10mm- Φ 20mm bars, the speed of continuously casting is 30mm/min～60mm/min；
(4) the complete stove of continuous casting need to such as continue founding, and stove domestic demand stays alloy part material, then carries out continuously by step (1), (2), (3)
Casting, so repeatedly, until having cast all alloys；
(5) cold drawn cogging, using wire drawing machine alloy cogging and processing are carried out, and pass deformation is controlled 20%～30%, at heat
Reason temperature is 600 DEG C～700 DEG C, and the time is 3h～5h；
(6) it is surface-treated, removing surface is carried out using mechanical polishing and hand inspection；
(7) further according to use requirement, then the polish of silk material is carried out, finally prepares CuZrMoYbGdEr high strength high conducting coppers
Alloy product.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510759406.2A CN105274385B (en) | 2015-11-09 | 2015-11-09 | Continuously cast high-strength high-conductivity copper alloy |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510759406.2A CN105274385B (en) | 2015-11-09 | 2015-11-09 | Continuously cast high-strength high-conductivity copper alloy |
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| Publication Number | Publication Date |
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| CN105274385A CN105274385A (en) | 2016-01-27 |
| CN105274385B true CN105274385B (en) | 2017-04-26 |
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| CN201510759406.2A Expired - Fee Related CN105274385B (en) | 2015-11-09 | 2015-11-09 | Continuously cast high-strength high-conductivity copper alloy |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110241326B (en) * | 2019-06-05 | 2021-01-19 | 中南大学 | Alloyed oxygen-free copper and preparation method thereof |
| CN111705236A (en) * | 2020-06-17 | 2020-09-25 | 浙江浙铜五星金属材料有限公司 | High-precision high-shaping brass strip and processing technology thereof |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2001207229A (en) * | 2000-01-27 | 2001-07-31 | Nippon Mining & Metals Co Ltd | Copper alloy for electronic material |
| CN101054654A (en) * | 2006-04-11 | 2007-10-17 | 中国科学院金属研究所 | High-strength high-conductivity oxidation-resisting low-silver copper-base alloy and preparation thereof |
| CN101629254A (en) * | 2009-06-25 | 2010-01-20 | 中南大学 | Multi-element composite micro-alloying copper alloy with high strength and high conductivity and preparation method thereof |
| CN101984106A (en) * | 2010-11-10 | 2011-03-09 | 河南通宇冶材集团有限公司 | Low silver-copper alloy board for thin slab continuous casting crystallizer and manufacturing method thereof |
| CN102676868A (en) * | 2012-01-10 | 2012-09-19 | 河南科技大学 | Ultrahigh strength copper alloy and preparation method thereof |
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2015
- 2015-11-09 CN CN201510759406.2A patent/CN105274385B/en not_active Expired - Fee Related
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2001207229A (en) * | 2000-01-27 | 2001-07-31 | Nippon Mining & Metals Co Ltd | Copper alloy for electronic material |
| CN101054654A (en) * | 2006-04-11 | 2007-10-17 | 中国科学院金属研究所 | High-strength high-conductivity oxidation-resisting low-silver copper-base alloy and preparation thereof |
| CN101629254A (en) * | 2009-06-25 | 2010-01-20 | 中南大学 | Multi-element composite micro-alloying copper alloy with high strength and high conductivity and preparation method thereof |
| CN101984106A (en) * | 2010-11-10 | 2011-03-09 | 河南通宇冶材集团有限公司 | Low silver-copper alloy board for thin slab continuous casting crystallizer and manufacturing method thereof |
| CN102676868A (en) * | 2012-01-10 | 2012-09-19 | 河南科技大学 | Ultrahigh strength copper alloy and preparation method thereof |
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Application publication date: 20160127 Assignee: Kunming Guiyan New Material Technology Co., Ltd. Assignor: Kunming Institute of Precious Metals Contract record no.: X2019530000002 Denomination of invention: Continuously cast high-strength high-conductivity copper alloy Granted publication date: 20170426 License type: Common License Record date: 20190929 |
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