CN101474663B - Preparation method of silver-bearing copper pole - Google Patents
Preparation method of silver-bearing copper pole Download PDFInfo
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- CN101474663B CN101474663B CN2009101030821A CN200910103082A CN101474663B CN 101474663 B CN101474663 B CN 101474663B CN 2009101030821 A CN2009101030821 A CN 2009101030821A CN 200910103082 A CN200910103082 A CN 200910103082A CN 101474663 B CN101474663 B CN 101474663B
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Abstract
The invention discloses a preparation method of a silver-bearing copper rod. Compared with the prior art, the method is characterized by reducing procedures such as annealing, acid washing and the like, greatly reducing energy consumption and manufacturing cost, obviously enhancing product quality and yield, producing no oxidation residue on surface of the product, greatly enhancing mechanical properties such as abrasion resistance, thermal abrasion proof, hardness and the like of the produced silver-bearing copper rod, ensuring relatively high electric conductivity, and high strength, good flatness and strong creep resistance.
Description
Technical field
The present invention relates to nonferrous metallurgy and make field, particularly a kind of preparation method of silver-bearing copper pole.
Background technology
The argentiferous copper bar is obtaining bigger reinforcement owing to added micro-silver aspect the mechanicalnesses such as wear-resisting, heat-resisting erosion, hardness, and still kept higher conductance, existing argentiferous copper bar manufacture method may further comprise the steps: 1) high-purity catholyte copper coin and feed back add the silver batching; 2) use vertical semicontinuous GYT-750 type smelting furnace founding copper ingot; 3) sawing moulding; 4) gas furnace heating; 5) 2000 tons of water seals are squeezed into blank; 6) Φ 400 type rolled by cold rolling machine; 7) car bottom type annealing furnace annealing; 8) pickling, pointing; 9) 30 tons of cold drawn one-tenth finished products of cold-drawn machine.
Therefrom as can be seen, the existing conventional method step is various, particularly it comprises links such as annealing, pickling, can produce oxidized residual thing etc. on the surface of product, can increase the contact resistance of product, blocked up oxide skin(coating) in addition can make electric current can not by or produce the excessive problem of current density in the part, splash and surperficial scaling loss thereby produce, shortened the service life of material; In addition, existing production method production efficiency is low, and serious waste of resources, yield rate are not high yet.
In a word, be necessary the production technology of traditional silver-bearing copper pole is improved, work out a kind of production efficiency height, economize on resources the preparation method of the silver-bearing copper pole that yield rate is high.
Summary of the invention
In view of this, the objective of the invention is to overcome the deficiency of above-mentioned prior art, a kind of preparation method of silver-bearing copper pole is provided, can overcome that prior art production efficiency is low, serious waste of resources, yield rate be not high, product surface has the difficult problem of oxidation residue.
Purpose of the present invention may further comprise the steps in the preparation method that a kind of silver-bearing copper pole is provided:
1) draw the water yield of main frequency furnace cooling water in the adjusting, hydraulic pressure is remained within the scope of 0.26Mpa～0.3Mpa, temperature remains within 26 ℃～32 ℃ the scope, draws main frequency furnace on described Cu crystallizer is installed;
2) set that to draw the bar pitch be 6mm～7mm, drawing bar speed is 0.4m/min～0.55m/min;
3) will put into main frequency furnace in the copper of silver content ratio proportioning and silver dissolves, Control for Kiln Temperature is within 1120 ℃～1135 ℃ scope, at the holding furnace of main frequency furnace and the copper liquid surface coverage graphite phosphorus sheet of transitional storehouse, at the copper liquid surface coverage high-quality charcoal of the melting furnace of stove;
4) draw bar, temperature is controlled within 1120 ℃～1135 ℃ the scope, draws bar speed and remains within the scope of 0.4m/min～0.55m/min, draws bar and obtains finished product.
Further, in step 4), in step 4), when drawing bar, constantly add copper and silver, constant with the liquid level that keeps silver content and copper liquid;
Further, adopt high-purity catholyte copper coin TU0, TU1 or TU2, silver ingot IC-A
g99.99 be raw material.
In addition, the copper-containing raw material of adding also comprises feed back, the tailing that described feed back produces in process of production for the copper coin of melting;
The smelting temperature of above-mentioned Kufil is between 1120 ℃～1135 ℃, and Kufil has good flowability and castability under this temperature, can obtain good crystalline structure and crystalline quality;
It is 6mm～7mm that the bar pitch is drawn in setting, and drawing bar speed is 0.4m/min～0.55m/min, can guarantee copper liquid draw bar near solidify very soon, the crystals of formation is organized fine and closely woven, even.
The invention has the beneficial effects as follows:
1. the present invention is with respect to original argentiferous copper bar production technology, owing to reduced process procedures such as annealing, pickling, its energy resource consumption and manufacturing cost reduce greatly, and product quality and yield rate improve greatly;
2. owing on silver-bearing copper solution, covered charcoal and the double-deck material of graphite phosphorus sheet, isolated contacting of silver-bearing copper solution and air well, the oxygen of trace might be penetrated in the silver-bearing copper solution, with the copper generation cupric oxide that reacts, and graphite phosphorus sheet can with cupric oxide generation chemical reaction, its product P2O5 is the volatilizable effusion of gas, therefore, the present invention compared with prior art, the oxygen content in its silver-bearing copper solution is extremely low, several ignoring, its product surface that makes does not have the oxidized residual thing;
3. the silver-bearing copper pole of producing by this method is obtaining bigger reinforcement aspect the mechanicalnesses such as wear-resisting, heat-resisting erosion, hardness, and has still kept higher conductance, and its intensity height, good straightness degree, creep resisting ability are strong.
Other advantages of the present invention, target, to set forth in the following description to a certain extent with feature, and to a certain extent,, perhaps can obtain instruction from the practice of the present invention based on being conspicuous to those skilled in the art to investigating hereinafter.Target of the present invention and other advantages can realize and obtain by following specification and claims.
The specific embodiment
Below will be described in detail the preferred embodiments of the present invention.Should be appreciated that preferred embodiment only for the present invention is described, rather than in order to limit protection scope of the present invention.
Embodiment one
In last drawing Φ 20 Cu crystallizers are installed in SL-I3-10/ Φ 12.5～Φ 20 type main frequency furnaces, raw material adopts high-purity catholyte copper coin TU0, silver ingot (IC-Ag99.99), carry out the raw material proportioning by weight percentage, wherein copper content is 99.915%, and silver content is 0.85 ‰; Regulate the water yield of cooling water, maintenance hydraulic pressure is 0.26Mpa, and temperature is 26 ℃; Configure that to draw the bar pitch be 6mm, speed is 0.4m/min; Copper that will weigh up in the silver content ratio and silver are put into main frequency furnace and are dissolved, Control for Kiln Temperature is at 1120 ℃, at the holding furnace of main frequency furnace and the certain thickness graphite phosphorus of the copper liquid surface coverage sheet in excessive storehouse, at the certain thickness high-quality charcoal of copper liquid surface coverage of the melting furnace of stove; Regulate each grade of electrical power control cabinet voltage, control copper liquid temperature well at 1120 ℃; Draw bar, temperature is controlled at 1120 ℃, draws bar speed and remains on 0.4m/min, draws bar and obtains finished product;
Embodiment two
In last drawing Φ 20 Cu crystallizers are installed in SL-I3-10/ Φ 12.5～Φ 20 type main frequency furnaces; Raw material adopts high-purity catholyte copper coin TU1 and feed back (copper coin of melting produce in process of production tailing), silver ingot (IC-Ag99.99); Carry out the raw material proportioning by weight percentage, wherein copper content is 99.9292%, and silver content is 0.708 ‰; Regulate the water yield of cooling water, maintenance hydraulic pressure is 0.3Mpa, and temperature is 30 ℃; Configure and draw bar pitch (7mm) and speed (0.55m/min); Copper that will weigh up in the silver content ratio and silver are put into main frequency furnace and are dissolved, Control for Kiln Temperature is at 1130 ℃, at the holding furnace of main frequency furnace and the certain thickness graphite phosphorus of the copper liquid surface coverage sheet in excessive storehouse, at the certain thickness high-quality charcoal of copper liquid surface coverage of the melting furnace of stove; Keep native copper liquid liquid level below 250, regulate each grade of electrical power control cabinet voltage, control copper liquid temperature well at 1130 ℃; Add silver ingot earlier at melting furnace, measure silver content by the WYX-700 atomic absorption spectrophotometer, add copper again by desired silver content,, guarantee that silver content meets product requirement when copper liquid liquid level rises to 400 by adding the operation of silver-measurement silver content-adding copper; Draw bar, temperature is controlled at 1130 ℃, draws bar speed and remains on 0.55m/min, adds high-purity catholyte copper coin, feed back and silver ingot by silver-bearing copper content proportioning simultaneously, and progressively copper liquid liquid level is risen to 500 also maintenances, draws bar and obtains finished product.
Embodiment three
In last drawing Φ 20 Cu crystallizers are installed in SL-I3-10/ Φ 12.5～Φ 20 type main frequency furnaces; Raw material adopts high-purity catholyte copper coin TU2 and feed back, silver ingot (IC-Ag99.99); Carry out the raw material proportioning by weight percentage, wherein copper content is 99.9200%, and silver content is 0.800 ‰; Regulate the water yield of cooling water, maintenance hydraulic pressure is 0.28Mpa, and temperature is 32 ℃; Configure that to draw the bar pitch be 6.5mm, speed is 0.5m/min; Copper that will weigh up in the silver content ratio and silver are put into main frequency furnace and are dissolved, Control for Kiln Temperature is at 1125 ℃, at the holding furnace of main frequency furnace and the certain thickness graphite phosphorus of the copper liquid surface coverage sheet in excessive storehouse, at the certain thickness high-quality charcoal of copper liquid surface coverage of the melting furnace of stove; Keep native copper liquid liquid level below 250, regulate each grade of electrical power control cabinet voltage, control copper liquid temperature well at 1125 ℃; Add silver ingot earlier at melting furnace, measure silver content by the WYX-700 atomic absorption spectrophotometer, add copper again by desired silver content,, guarantee that silver content meets product requirement when copper liquid liquid level rises to 400 by adding the operation of silver-measurement silver content-adding copper; Draw bar, temperature is controlled at 1125 ℃, draws bar speed and remains on 0.5m/min, simultaneously by adding of silver-bearing copper content proportioning high-purity catholyte copper coin, feed back and silver ingot, progressively copper liquid liquid level is risen to 500 and keep, and draws bar and obtains finished product.
Next, can also carry out the continuously extruded base line that obtains to the silver-bearing copper pole that obtains by extrusion equipment, then by cold-drawn machine with the cold drawn one-tenth copper bar of base line or other shapes.
With the present invention silver-bearing copper pole of producing and the silver-bearing copper parallelism of producing with the argentiferous copper ingot of original explained hereafter:
1. output is much higher than original technology, and former technology can only be produced 8 tons of argentiferous copper ingots every day, and existing technology is produced 16 tons of silver-bearing copper poles every day;
2. compare former technology with silver-bearing copper pole and reduced multinomial process procedure, than former energy saving technology 40%, manufacturing cost has reduced by 50%;
3. compare with former technology, the yield rate of product has improved 10%～15%;
4. compare with former technology, increased substantially product quality, owing to reduced links such as annealing, pickling, use graphite phosphorus sheet and charcoal to cover simultaneously, the surperficial non-oxidation residue of product, the silver-bearing copper pole of producing is obtaining bigger reinforcement aspect the mechanicalnesses such as wear-resisting, heat-resisting erosion, hardness, and has still kept higher conductance, and its intensity height, good straightness degree, creep resisting ability are strong.
Explanation is at last, above embodiment is only unrestricted in order to technical scheme of the present invention to be described, although the present invention is had been described in detail with reference to preferred embodiment, those of ordinary skill in the art is to be understood that, can make amendment or be equal to replacement technical scheme of the present invention, and not breaking away from the aim and the scope of the technical program, it all should be encompassed in the middle of the claim scope of the present invention.
Claims (2)
1. the preparation method of silver-bearing copper pole is characterized in that: may further comprise the steps:
1) draw the water yield of main frequency furnace cooling water in the adjusting, hydraulic pressure is remained within the scope of 0.26Mpa～0.3Mpa, temperature remains within 26 ℃～32 ℃ the scope, draws main frequency furnace on described Cu crystallizer is installed;
2) set that to draw the bar pitch be 6mm～7mm, drawing bar speed is 0.4m/min～0.55m/min;
3) copper and silver are put into drawn main frequency furnace and dissolve, Control for Kiln Temperature is within 1120 ℃～1135 ℃ scope, at the last holding furnace of main frequency furnace and the copper liquid surface coverage graphite phosphorus sheet of transitional storehouse of drawing, at the last copper liquid surface coverage charcoal that draws the melting furnace of main frequency furnace;
4) draw bar, temperature is controlled within 1120 ℃～1135 ℃ the scope, draws bar speed and remains within the scope of 0.4m/min～0.55m/min, draws bar and obtains finished product, when drawing bar, constantly add copper and silver, constant with the liquid level that keeps silver content and copper liquid.
2. the preparation method of silver-bearing copper pole as claimed in claim 1, it is characterized in that: adopting high-purity catholyte copper coin is TU0, TU1 or TU2, and silver ingot IC-Ag99.99 is a raw material.
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| Application Number | Priority Date | Filing Date | Title |
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| CN2009101030821A CN101474663B (en) | 2009-01-16 | 2009-01-16 | Preparation method of silver-bearing copper pole |
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| CN2009101030821A CN101474663B (en) | 2009-01-16 | 2009-01-16 | Preparation method of silver-bearing copper pole |
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| CN101474663A CN101474663A (en) | 2009-07-08 |
| CN101474663B true CN101474663B (en) | 2011-06-01 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108359837A (en) * | 2018-03-16 | 2018-08-03 | 重庆鸽牌电工材料有限公司 | A kind of preparation method of the high silver-bearing copper pole of high-purity anaerobic |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102034563B (en) * | 2010-11-10 | 2012-06-27 | 福州市广福有色金属制品有限公司 | Copper bus bar with high strength, high conductivity and high toughness and preparation method thereof |
| CN105107862A (en) * | 2015-09-24 | 2015-12-02 | 云南新铜人实业有限公司 | Copper bar continuous extrusion short process production method |
| CN108118175B (en) * | 2017-11-30 | 2019-06-07 | 重庆鸽牌电线电缆有限公司 | The preparation method of large capacity phase modifier silver-bearing copper pole |
| CN108526422B (en) * | 2018-05-23 | 2020-05-19 | 中南大学 | Production method of high-strength high-conductivity heat-resistant copper alloy |
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2009
- 2009-01-16 CN CN2009101030821A patent/CN101474663B/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108359837A (en) * | 2018-03-16 | 2018-08-03 | 重庆鸽牌电工材料有限公司 | A kind of preparation method of the high silver-bearing copper pole of high-purity anaerobic |
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| CN101474663A (en) | 2009-07-08 |
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Assignee: Chongqing Pigeon Electric Wire & Cable Co.,Ltd. Assignor: Chongqing Pigeon Electrician Material Co., Ltd. Contract record no.: 2012500000061 Denomination of invention: Preparation method of silver-bearing copper pole Granted publication date: 20110601 License type: Exclusive License Open date: 20090708 Record date: 20120704 |