CN104308124A - High-strength gold clad copper composite wire and preparation method thereof - Google Patents
High-strength gold clad copper composite wire and preparation method thereof Download PDFInfo
- Publication number
- CN104308124A CN104308124A CN201410541578.8A CN201410541578A CN104308124A CN 104308124 A CN104308124 A CN 104308124A CN 201410541578 A CN201410541578 A CN 201410541578A CN 104308124 A CN104308124 A CN 104308124A
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- copper
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- composite wire
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- high strength
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D19/00—Casting in, on, or around objects which form part of the product
- B22D19/16—Casting in, on, or around objects which form part of the product for making compound objects cast of two or more different metals, e.g. for making rolls for rolling mills
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21C—MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES OR PROFILES, OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
- B21C37/00—Manufacture of metal sheets, bars, wire, tubes or like semi-manufactured products, not otherwise provided for; Manufacture of tubes of special shape
- B21C37/04—Manufacture of metal sheets, bars, wire, tubes or like semi-manufactured products, not otherwise provided for; Manufacture of tubes of special shape of bars or wire
-
- 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
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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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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Metal Extraction Processes (AREA)
Abstract
The invention discloses a high-strength gold clad copper composite wire and a preparation method thereof. According to the gold clad copper composite wire, high-strength copper alloy is a core wire and pure gold is a cladding layer. A preparation process of the high-strength gold clad copper composite wire comprises the following steps: performing ingot casting, extrusion and drawing on the outer layer metal gold with purity of being greater than or equal to 99.999 percent to form a round pipe, and annealing for 30-60 minutes at 500-600 DEG C; smelting copper in a medium-frequency induction furnace, adding 0.3-3 percent of Ag, 0.2-1 percent of Ni and 0.1-0.3 percent of RE after the copper is completely smelted, heating and refining; pouring the smelted copper alloy into a gold tube, and performing rapid solidification to prepare a composite rod; then performing rotary swaging, drawing and on-line continuous annealing to prepare the superfine high-strength gold clad copper composite wire. The mechanical property of the composite wire is obviously improved. The composite wire is mainly used as an internal lead in various semiconductor devices, such as a transistor integrated circuit large scale integrated circuit, for packaging various electronic components such as a diode, a triode and an integrated circuit large-scale integrated circuit IC card, and has great application prospect.
Description
Technical field
The invention belongs to expensive/base metal composite and preparation technology field thereof, in particular, provide a kind of high strength gold copper-clad composite wire material and preparation technology thereof.In electronic information, field of aerospace, there is good application prospect.
Technical background
Along with developing rapidly of electronic information technology, metal wire material is widely used in various precision instrument, Mini electric instrument, radio electronics etc.The golden metal the highest as conductance, has a wide range of applications in microelectric technique.But, due to the shortage of golden resource, directly high as conductive material cost with spun gold material, be unfavorable for that it is applied.Gold copper-clad composite wire material is high with its conductance, intensity high is widely used in the aspects such as aviation wire and waveguide.
Up to the present, by integral for two or more Material cladding, the method being applicable to large-scale production mainly contains Mechanical Method, plastic deformation method, metallurgy method.Mechanical Method is divided into the methods such as bushing, hydraulic extend pipe, drawing, and its feature to be each composite bed interface be mechanical bond, interface bond strength are low.Though plastic deformation method can realize metallurgical binding, non-scale be obtained, nothing is mingled with, completely clean compound interface is very difficult.Metallurgy method has reverse solidification method, clad continuous metal cast process, core-filled and continuously casted method, multilayer materials one-step casting forming process.These class methods are conducive to solidifying feeding and rolling processing, generally that outer sphere molten metal is attached to and core solidifies or core molten metal solidifies in outer layer metal tube, but all have some limitations, as all prepared the clad composite material of heavy wall, the core-filled and continuously casted outer layer metal fusing point that is suitable only for is higher than core fusing point composite etc.
The gold-plated legal system of existing golden coppered wire many employings copper cash is standby, but coating process exists the shortcomings such as thickness of coating is limited, in uneven thickness, between coating and core bond strength is low, cannot carry out following process.Generally adopt the method for sleeve pipe to prepare for high performance golden copper-clad composite filament, its interface, mainly through follow-up processing, realizes mechanical bond, expect without the compound interface be mingled with, clean completely very difficult.Adopt cold hydrostatic extrusion legal system for golden copper-clad, prepare golden copper-clad composite wire material by follow-up multi pass drawing, its equipment is complicated, technology controlling and process difficulty, easily produces along its length that coating thickness is uneven.
Due to the shortcoming that the method preparing metal compound wire above exists, the present invention proposes to adopt the method for casting to prepare high strength gold copper-clad composite bar, and by swaging, drawing prepares the new technology of golden copper-clad composite wire material.This method have simple to operate, highly versatile, coating thickness are controlled, metallurgical interface joint thickness is controlled, interface cleanness, interface cohesion are good, silk material intensity is high, is suitable for preparing ultra-fine golden copper-clad composite wire material preparation method.According to demand, in drawing process, implement suitable online continuously annealing in process.
Summary of the invention
The object of the present invention is to provide a kind of high strength gold copper-clad composite wire material and preparation technology thereof, have simple to operate, highly versatile, coating thickness are controlled, metallurgical interface joint thickness is controlled, interface cleanness, interface cohesion are good, silk material intensity is high, is suitable for preparation method prepared by ultra-fine golden copper-clad composite wire material.
High strength gold copper-clad composite wire material outer layer metal of the present invention is the gold that purity is greater than 99.999%, and internal layer is copper alloy, and the composition of copper alloy is Ag:0.3%-3%, Ni:0.2%-1%, RE:0.1-0.3%., surplus is copper.
High strength of the present invention gold copper-clad composite wire material preparation process is: by the outer layer metal of purity >=99.999% gold through ingot casting, extrude, be drawn into pipe, the gold length of pipe, external diameter and wall thickness are by product design requirement, one end gold plaque of golden pipe is carried out welding back cover, and in 500 DEG C-600 DEG C annealing 30min-60min, its hardness HV0.2≤40, then the inwall of golden pipe is polished, surface alkali cleaning, ultrasonic cleaning, be placed in pouring device, pouring device is made up of electric furnace, tank, thermo detector, medium (water), baffle plate and sprue cup.By copper melting in intermediate frequency furnace, after copper melts completely, add Addition ofelements 0.3%-3%, Ni:0.2%-1%, RE:0.1-0.3%, and the refining that heats up.The copper alloy of fusing is poured into Jin Guanzhong, carries out rapid solidification, obtained composite bar.By processing of swaging, drawing, on-line continuous annealing preparation ultra-fine high strength gold copper-clad composite wire material.
In order to solve coating thickness uniformity, interface cleanness and control the difficult problems such as thickness of diffusion layer; the present invention adopts the method for casting to prepare composite bar; its protective layer thickness is even; interface cleanness; and by controlled cooling model medium---the temperature of water; control the heat transfer rate of gold in copper alloy process of setting, thus control the thickness of diffusion layer, be beneficial to follow-up processing.
Advantage of the present invention:
(1) by adding micro-Ag, Ni, RE, the mechanical property of composite wire material is improved significantly.Gold coating thickness is even, and fluctuate along its length little, the concentricity of layer gold and copper alloy core is relatively good, and layer gold surface quality is good.
(2) combine proof gold and be not oxidized feature that is high with the intensity of copper, that conducted electricity.
(3) to golden pipe thickness no requirement (NR), the composite of different coating thickness can be prepared as required.
(4) interface cleanness.Because core from bottom to top solidifies, interface impurity can float smoothly.
(5) in the roughing stage, adopt processing of swaging, clad and core homogeneous deformation can be ensured, coating thickness uniformity.
Accompanying drawing explanation
Fig. 1 is pouring device schematic diagram of the present invention.
Detailed description of the invention
Embodiment 1
(1) select purity be greater than the gold of 99.999% through ingot casting, extrude, be drawn into pipe, the external diameter of pipe is 20mm, wall thickness 1.5mm, and length is 80mm.
(2) one end gold plaque of golden pipe is carried out welding back cover.
(3) the golden pipe of back cover will be welded at 550 DEG C of annealing 45min.
(4) inwall of golden pipe is polished, surperficial alkali cleaning, ultrasonic cleaning.
(5) cleaned golden pipe is placed in pouring device.The temperature of cooling medium---water is 90 DEG C.
(6) by copper melting in intermediate frequency furnace, after copper melts completely, Addition ofelements is added, Ag:1%, Ni:1%, RE:0.1%, and the refining that heats up.
(7) cast, the copper alloy of fusing is poured into Jin Guanzhong, carries out rapid solidification, obtained golden copper-clad composite bar.(8) swage processing, from Φ 20mm-Φ 6mm, every time deformation amount controlling is at 3%-5%.
(9) drawing: the silk material golden copper-clad composite bar being pulled into Φ 0.3mm, every time deformation amount controlling is at 10%-15%.
(10) multimode drawing, on-line continuous is annealed.Tube furnace temperature is 300 DEG C, and uniform temperature zone length is 1000mm, and drawing speed is 2m/s.
(11) mechanical performance detects and analyzes.
(12) coiling: silk thread is divided the little axle being coiled into different length.
Embodiment 2
(1) select purity be greater than the gold of 99.999% through ingot casting, extrude, be drawn into pipe, the external diameter of pipe is 26mm, wall thickness 2mm, and length is 150mm.
(2) one end gold plaque of golden pipe is carried out welding back cover.
(3) the golden pipe of back cover will be welded at 600 DEG C of annealing 30min.
(4) inwall of golden pipe is polished, surperficial alkali cleaning, ultrasonic cleaning.
(5) cleaned golden pipe is placed in pouring device.The temperature of cooling medium---water is 70 DEG C.
(6) by copper melting in intermediate frequency furnace, after copper melts completely, Addition ofelements is added, Ag:3%, Ni:0.5%, RE:0.2%, and the refining that heats up.
(7) cast, the copper alloy of fusing is poured into Jin Guanzhong, carries out rapid solidification, obtained golden copper-clad composite bar.(8) forging and stamping processing, from Φ 26mm-Φ 5mm, every time deformation amount controlling is at 3%-5%.
(9) drawing: the silk material golden copper-clad composite bar being pulled into Φ 0.3mm, every time deformation amount controlling is at 10%-15%.
(10) multimode drawing, on-line continuous is annealed.Tube furnace temperature is 350 DEG C, and uniform temperature zone length is 1000mm, and drawing speed is 2.5m/s.
(11) mechanical performance detects and analyzes.
(12) coiling: silk thread is divided the little axle being coiled into different length.
Claims (9)
1. a high strength gold copper-clad composite wire material, it is characterized in that: outer layer metal is the gold that purity is greater than 99.999%, internal layer is copper alloy, and the composition of copper alloy is Ag:0.3%-3%, Ni:0.2%-1%, RE:0.1-0.3%., surplus is copper.
2. a preparation method for high strength gold copper-clad composite wire material, is characterized in that comprising the following steps:
(1) by high-purity outer layer metal gold through ingot casting, extrude, be drawn into pipe, the length of golden pipe, external diameter and wall thickness are by product design requirement;
(2) one end gold plaque of golden pipe is carried out welding back cover;
(3) the golden pipe of back cover will be welded at 500 DEG C-600 DEG C annealing 30min-60min;
(4) inwall of golden pipe is polished, surperficial alkali cleaning, ultrasonic cleaning;
(5) cleaned golden pipe is placed in pouring device;
(6) by copper melting in intermediate frequency furnace, after copper melts completely, Addition ofelements is added, and the refining that heats up;
(7) cast, the copper alloy of fusing is poured into Jin Guanzhong, carries out rapid solidification, obtained composite bar.
(8) forging and stamping processing;
(9) intermediate heat-treatment
(10) drawing: pole is pulled into silk thread by wire drawing machine;
(11) anneal;
(12) mechanical performance detects and analyzes;
(13) coiling: silk thread is divided the little axle being coiled into different length.
3. the preparation method of high strength gold copper-clad composite wire material as claimed in claim 2, is characterized in that described outer layer metal gold purity >=99.999%.
4. the material, preparation method of high strength gold copper-clad composite filament as claimed in claim 2, is characterized in that described pouring device is made up of electric furnace, tank, thermo detector, medium (water), baffle plate and sprue cup.
5. the preparation method of high strength gold copper-clad composite wire material as claimed in claim 2, is characterized in that described pouring device medium (water) temperature controls at 70 DEG C-90 DEG C.
6. the material, preparation method of high strength gold copper-clad composite filament as claimed in claim 2, is characterized in that the Addition ofelements of described copper alloy is Ag:0.3%-3%, Ni:0.2%-1%, RE:0.1-0.3%.
7. the preparation method of high strength gold copper-clad composite wire material as claimed in claim 2, it is characterized in that by regulating medium and the temperature of water, golden pipe diameter, golden thickness of pipe wall, layer gold can being realized and core (copper alloy) binder course (transition zone) thickness is controlled, the properties for follow of raising material.
8. high strength gold copper-clad composite wire material preparation method as claimed in claim 1, it is characterized in that described forging and stamping are processed as processing of swaging, every time deformation amount controlling is at 5%-10%.
9. the preparation method of high strength gold copper-clad composite wire material as claimed in claim 2, after it is characterized in that described golden pipe annealing, its hardness HV0.2≤40.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201410541578.8A CN104308124A (en) | 2014-10-14 | 2014-10-14 | High-strength gold clad copper composite wire and preparation method thereof |
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| CN201410541578.8A CN104308124A (en) | 2014-10-14 | 2014-10-14 | High-strength gold clad copper composite wire and preparation method thereof |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105478725A (en) * | 2015-12-23 | 2016-04-13 | 上海交通大学 | Method for preparing bi-metal composite through solid copper solid-liquid composite and extrusion combination |
| CN105499543A (en) * | 2015-12-23 | 2016-04-20 | 上海交通大学 | Method for preparing double-metal composite material by solid-liquid combination of solid-state copper material and drawing composition |
| CN107579010A (en) * | 2017-07-31 | 2018-01-12 | 昆明贵金属研究所 | It is a kind of to improve the compound bonding wire coating of gold and silver and the method for core adhesion |
| CN107634045A (en) * | 2017-07-31 | 2018-01-26 | 贵研铂业股份有限公司 | A kind of compound bonding wire of golden contracted payment and preparation method thereof |
| CN111136240A (en) * | 2019-12-31 | 2020-05-12 | 丹阳市华龙特钢有限公司 | Precise alloy composite material |
| CN113732303A (en) * | 2021-09-15 | 2021-12-03 | 浙江智熔增材制造技术有限公司 | Wire for additive manufacturing of object and preparation method thereof |
| CN113843381A (en) * | 2021-08-21 | 2021-12-28 | 南京理工大学 | Isomeric aluminum magnesium alloy bar and preparation method thereof |
| US11319613B2 (en) | 2020-08-18 | 2022-05-03 | Enviro Metals, LLC | Metal refinement |
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| CN103074554A (en) * | 2012-12-27 | 2013-05-01 | 昆明贵金属研究所 | Novel gold-silver-copper alloy composite wire material and preparation method thereof |
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| CN104046836A (en) * | 2005-12-22 | 2014-09-17 | 株式会社神户制钢所 | Copper alloy having excellent stress relaxation property |
| CN101979689A (en) * | 2010-11-16 | 2011-02-23 | 蔡元华 | Bonding copper wire and preparation method thereof |
| CN103056191A (en) * | 2012-12-23 | 2013-04-24 | 昆明贵金属研究所 | Novel preparation method for noble composite metallic bond composite wire materials |
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Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105478725A (en) * | 2015-12-23 | 2016-04-13 | 上海交通大学 | Method for preparing bi-metal composite through solid copper solid-liquid composite and extrusion combination |
| CN105499543A (en) * | 2015-12-23 | 2016-04-20 | 上海交通大学 | Method for preparing double-metal composite material by solid-liquid combination of solid-state copper material and drawing composition |
| CN107579010A (en) * | 2017-07-31 | 2018-01-12 | 昆明贵金属研究所 | It is a kind of to improve the compound bonding wire coating of gold and silver and the method for core adhesion |
| CN107634045A (en) * | 2017-07-31 | 2018-01-26 | 贵研铂业股份有限公司 | A kind of compound bonding wire of golden contracted payment and preparation method thereof |
| CN107579010B (en) * | 2017-07-31 | 2020-06-30 | 昆明贵金属研究所 | Method for improving binding force of gold-silver composite bonding wire coating and core material |
| CN111136240A (en) * | 2019-12-31 | 2020-05-12 | 丹阳市华龙特钢有限公司 | Precise alloy composite material |
| US11319613B2 (en) | 2020-08-18 | 2022-05-03 | Enviro Metals, LLC | Metal refinement |
| US11578386B2 (en) | 2020-08-18 | 2023-02-14 | Enviro Metals, LLC | Metal refinement |
| CN113843381A (en) * | 2021-08-21 | 2021-12-28 | 南京理工大学 | Isomeric aluminum magnesium alloy bar and preparation method thereof |
| CN113843381B (en) * | 2021-08-21 | 2024-04-23 | 南京理工大学 | Heterogeneous aluminum magnesium alloy bar and preparation method thereof |
| CN113732303A (en) * | 2021-09-15 | 2021-12-03 | 浙江智熔增材制造技术有限公司 | Wire for additive manufacturing of object and preparation method thereof |
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Application publication date: 20150128 |