CN105869771A - Preparation method for silver-coated aluminum composite thin wires - Google Patents
Preparation method for silver-coated aluminum composite thin wires Download PDFInfo
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- CN105869771A CN105869771A CN201610198399.8A CN201610198399A CN105869771A CN 105869771 A CN105869771 A CN 105869771A CN 201610198399 A CN201610198399 A CN 201610198399A CN 105869771 A CN105869771 A CN 105869771A
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B13/00—Apparatus or processes specially adapted for manufacturing conductors or cables
- H01B13/0036—Details
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Abstract
The invention discloses a preparation method for silver-coated aluminum composite thin wires. The preparation method comprises the steps of choosing a silver pipe with proper dimensions, and then carrying out deoiling and oxide film processing on the silver pipe; under gas protection, taking the silver pipe with one closed end as the cast, casting metal aluminum liquid at the other end of the silver pipe by adopting a pressure casting way, and then cooling and solidifying to prepare the composite blank; then preparing <phi> 1-3mm silver coated composite aluminum wires from the composite blank by adopting methods of groove rolling, or roller die drawing or stretching, wherein the pass reduction of area is 15-35%; enabling the silver coated aluminum wires to be subjected to single-die stretching or multi-die water tank stretching to obtain <phi> 0.05-0.5mm micro wires, wherein the pass reduction of area is 5-25%; and when the reduction of area of cold deformation reaches 95-99%, carrying out annealing processing on the composite wires at a temperature of 200-400 DEG C for 0.2-1h.
Description
Technical field
The present invention relates to the preparation method of a kind of bimetallic composite wire material, particularly relate to the preparation method of a kind of silver alclad composite filaments material.
Background technology
The silver-colored metal the highest as conductivity, has a wide range of applications in microelectric technique.But, due to the shortage of silver resource, directly high as conductive material cost with filamentary silver material, it is unfavorable for its popularization and application.Composite wire has homogenous material to be beyond one's reach superior function, applies more and more wider in industry-by-industry.The features such as silver coated aluminum compound silk material is high with its conductivity, contact performance is good, density is little are widely used in aviation wire and waveguide aspect.The preparation of existing silver coated aluminum compound silk mainly has two kinds of methods, 1) aluminum steel silver impregnation method, there is the shortcomings such as thickness of coating is limited, in uneven thickness, between coating and core bond strength is relatively low in this method；2) hydrostatic extrusion+annealing+the most secondary hubbing [thank build new etc., a kind of high-performance silver coated aluminum compound silk material and preparation technology [P], Chinese invention patent, the patent No.: CN200710063265], it is big that the method has equipment investment, and technological process is long, and production efficiency is the highest；And owing to the ratio of the yield strength of silver/aluminum is relatively big, causing the silver layer flow of metal difficulty when hydrostatic extrusion, silver layer metal flow is relatively slow compared with sandwich layer aluminum, thus is coated with silver layer and Bamboo-shaped fracture defect easily occur.
Summary of the invention
The present invention provides a kind of flow process relatively short, the preparation method of high efficiency silver alclad composite filaments material, and its preparation method is as follows:
1) the silver pipe of suitable dimension specification is selected; through deoiling and oxide-film; under gas shield; mechanically close silver pipe one end; use the mode of compression casting (pressure is 0.2 ~ 1MPa); being cast into metal aluminium liquid (molten metal temperature is 680 ~ 720 DEG C) by the silver pipe other end, cooled and solidified prepares composite blank；
2) composite blank surface is after pickling, then uses groove rolling or roller die drawing or pulling method to makeφAluminium wire material is closed in the cladding of 1-3 mm silver, and the passage contraction percentage of area is 15 ~ 35%；
3) silver alclad silk material is stretched to through single mode stretching or multimode water tankφ0.05-0.5 mm microfilament, the passage contraction percentage of area is 5 ~ 25%；
4) being 95-99% when the contraction percentage of area of cold deformation, composite wire material makes annealing treatment, and annealing temperature is 200-400 DEG C, annealing time 0.2-1h.
Compared with prior art, the present invention has a techniques below advantage:
1), after silver Guan Jing deoils, oxide-film processes, under gas shield, eliminate oxidation, make compound interface maintain high-cleanness and non-oxidation, improve interface bond strength；
2) compared with hydrostatic extrusion method, the method production cost is relatively low, operation and operation are the simplest, though hydrostatic extrusion deflection is bigger, but extrude for room temperature, silver, aluminum atom are difficult to spread and form real metallurgical binding, subsequent anneal cooperation is also needed to process to improve bond strength, and the present invention uses solid-liquid to be combined, by controlling casting temperature and the rate of cooling of blank of aluminum liquid, make to produce between silver and aluminium lamination metallurgical binding, improve the bond strength of transition zone, be conducive to obtaining high-performance silver coated aluminum composite filaments；
3) use the mode of compression casting, the finest and close and tiny tissue can be obtained, promote the performance of composite blank.
Detailed description of the invention:
Below in conjunction with embodiment, the invention will be further described:
Embodiment 1: cross dimensions isφ0.8 mm silver coated aluminum compound silk material forming technology
1) selection silver pipe external diameter isφ30 mm; wall thickness 2.5mm; silver length of tube is 200 mm; silver inside pipe wall is after deoiling and removing oxide film dissolving with pickling; under gas shield, with silver pipe as casting mold, use the mode of compression casting (pressure is 0.3MPa); injecting metal aluminium liquid (molten metal temperature is 700 DEG C) in silver pipe, cooled and solidified prepares composite blank；
2) composite blank surface is after dilute hydrochloric acid cleans, and uses roller die drawing to prepareφAluminium wire material is closed in 3 mm silver claddings, and the passage contraction percentage of area is 15 ~ 30%, and pass deformation is gradually lowered；
3)φ3 mm composite wire materials make annealing treatment, and annealing temperature is 400 DEG C, annealing time 0.5 h；
4) silver alclad silk material is stretched to through single modeφ0.8 mm microfilament, lubricant is vegetable oil, and the passage contraction percentage of area is 12 ~ 25%, and pass deformation is gradually lowered.
Embodiment 2: cross dimensions isφ0.1 mm silver alclad composite microwires forming technology
1) selection silver pipe external diameter isφ30 mm; wall thickness 2.5mm; silver length of tube is 200 mm; silver inside pipe wall is after deoiling and removing oxide film dissolving with pickling; under gas shield, with silver pipe as casting mold, use the mode of compression casting (pressure is 0.5MPa); injecting metal aluminium liquid (molten metal temperature is 680 DEG C) in silver pipe, cooled and solidified prepares composite blank；
2) composite blank surface is after dilute hydrochloric acid cleans, and uses ellipse-circular hole system rolling to be prepared asφAluminium wire material is closed in 3 mm silver claddings, and the passage contraction percentage of area is 10 ~ 25%, and pass deformation is gradually lowered；
3)φ3 mm composite wire materials make annealing treatment, and annealing temperature is 400 DEG C, annealing time 0.5 h；
4) silver alclad silk material is stretched to through single mode stretching and multimode water tankφ0.1 mm, lubricant is aerial kerosene, and the passage contraction percentage of area is 8 ~ 20%, and pass deformation is gradually lowered.
Claims (1)
1. the preparation method of a silver coated aluminum compound silk material, it is characterised in that preparation process is as follows:
(1) selecting the silver pipe of suitable dimension specification, through deoiling and oxide-film, under gas shield, with silver pipe as casting mold, use the mode of low pressure casting, inject metal aluminium liquid in silver pipe, cooled and solidified prepares composite blank；
(2) groove rolling or roller die drawing or pulling method is used to prepareφAluminium wire material is closed in the cladding of 1-3 mm silver, and the passage contraction percentage of area is 15 ~ 35%；
(3) silver alclad silk material is stretched to through single mode stretching or multimode water tankφ0.05-0.5
Mm microfilament, the passage contraction percentage of area is 5 ~ 25%；
(4) being 95-99% when the contraction percentage of area of cold deformation, composite wire material makes annealing treatment, and annealing temperature is 200-400 DEG C, annealing time 0.2-1h.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610198399.8A CN105869771A (en) | 2016-04-01 | 2016-04-01 | Preparation method for silver-coated aluminum composite thin wires |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610198399.8A CN105869771A (en) | 2016-04-01 | 2016-04-01 | Preparation method for silver-coated aluminum composite thin wires |
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| Publication Number | Publication Date |
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| CN105869771A true CN105869771A (en) | 2016-08-17 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201610198399.8A Pending CN105869771A (en) | 2016-04-01 | 2016-04-01 | Preparation method for silver-coated aluminum composite thin wires |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107958746A (en) * | 2017-11-02 | 2018-04-24 | 中天科技装备电缆有限公司 | A kind of more core flame-retardant flexible electric cables of silver alclad and its manufacture method |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH04230905A (en) * | 1990-08-31 | 1992-08-19 | Sumitomo Electric Ind Ltd | Copper-clad aluminum composite wire and manufacture thereof |
| JP2001271198A (en) * | 2000-03-24 | 2001-10-02 | Totoku Electric Co Ltd | Copper-coated aluminum wire |
| CN1996503A (en) * | 2007-01-05 | 2007-07-11 | 北京科技大学 | A high-performance silver coated aluminum compound silk material and its preparing technology |
| CN101236798A (en) * | 2008-02-04 | 2008-08-06 | 北京科技大学 | A copper adulterated aluminum complex flat line and its making method |
| CN105033225A (en) * | 2015-06-26 | 2015-11-11 | 东南大学 | Low-pressure core filling preparation technology of copper-clad aluminum composite material |
-
2016
- 2016-04-01 CN CN201610198399.8A patent/CN105869771A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH04230905A (en) * | 1990-08-31 | 1992-08-19 | Sumitomo Electric Ind Ltd | Copper-clad aluminum composite wire and manufacture thereof |
| JP2001271198A (en) * | 2000-03-24 | 2001-10-02 | Totoku Electric Co Ltd | Copper-coated aluminum wire |
| CN1996503A (en) * | 2007-01-05 | 2007-07-11 | 北京科技大学 | A high-performance silver coated aluminum compound silk material and its preparing technology |
| CN101236798A (en) * | 2008-02-04 | 2008-08-06 | 北京科技大学 | A copper adulterated aluminum complex flat line and its making method |
| CN105033225A (en) * | 2015-06-26 | 2015-11-11 | 东南大学 | Low-pressure core filling preparation technology of copper-clad aluminum composite material |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107958746A (en) * | 2017-11-02 | 2018-04-24 | 中天科技装备电缆有限公司 | A kind of more core flame-retardant flexible electric cables of silver alclad and its manufacture method |
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Application publication date: 20160817 |
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