CN102605189B - Method for preparing copper and copper-alloy cast ingots by electroslag refining technology - Google Patents
Method for preparing copper and copper-alloy cast ingots by electroslag refining technology Download PDFInfo
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- CN102605189B CN102605189B CN 201210076604 CN201210076604A CN102605189B CN 102605189 B CN102605189 B CN 102605189B CN 201210076604 CN201210076604 CN 201210076604 CN 201210076604 A CN201210076604 A CN 201210076604A CN 102605189 B CN102605189 B CN 102605189B
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Abstract
The invention discloses a method for preparing copper and copper-alloy cast ingots by an electroslag refining technology, which is implemented through the steps that: copper liquid is fed into a porous heating electrode after flowing through a launder; after the copper liquid is heated by the porous heating electrode, the copper liquid is subject to water-cooling ingot casting three times by using a crystallizer, and electroslag liquid is fed into the launder; and redundant electroslag liquid in the crystallizer flows into a slag ladle. The temperature of the electroslag liquid 2 is controlled in a range of 50-80 DEG C higher than the temperature of the copper liquid, the density of the electroslag liquid is required to be10-20% lower than the density of the copper liquid, and the boiling point of the electroslag fluid is required to be higher than 1900 DEG C. By using the method for preparing copper and copper-alloy cast ingots by an electroslag refining technology disclosed by the invention, a production process implemented by carrying out two-time melting and two-time solidification on metals in the traditional electroslag re-melting and ingot casting production process is canceled, therefore, the method is short in technological process, simple in production equipment, low in energy consumption, high in production efficiency, low in production cost, and higher in cast ingot quality; and by using the method disclosed by the invention, the volatilization loss of slag can be reduced, the operation environment can be improved, and the environmental pollution can be reduced.
Description
Technical field
The invention belongs to the metallurgical casting technical field, relate in particular to the method that a kind of electroslag refining technology prepares high-quality copper and copper alloy casting ingot.
Background technology
Casting is first procedure of copper and copper alloy processing, also is the key that influences copper and copper alloy fabricated product quality, and the quality of ingot quality is quality and the lumber recovery of the final fabricated product of influence directly.The esr casting is the effective way that obtains high-quality copper and copper alloy casting ingot, but the high-quality copper of two-part prepared and copper alloy casting ingot are adopted in the esr casting.The first step is to utilize direct water-cooling casting or die casting, prepares common DC ingot casting or ingot casting; Second step was that ingot casting is obtained the more excellent esr ingot casting of quality through esr.Because the preparation consumable electrode is as the raw material of remelting earlier for the casting of traditional esr, long flow path, the facility investment of production process are big.Ingot casting in process of production will be through twice fusing, solidify for twice, and energy expenditure is very high, and production efficiency is low, the production cost height.
Summary of the invention
The present invention is exactly at above-mentioned deficiency, proposes the method that a kind of electroslag refining technology prepares high-quality copper and copper alloy casting ingot.
Above-mentioned purpose realizes by following proposal:
A kind of electroslag refining technology prepares the method for copper and copper alloy casting ingot, it is characterized in that, described method changes copper liquid over to the porous heating electrode through chute, uses crystallizer ingot casting through this porous heating electrode heating back, and feeds electroslag night in described chute.
Method according to above-mentioned is characterized in that, ingot casting adopts three water-cooling patterns.
Method according to above-mentioned is characterized in that, electroslag hydrorrhea unnecessary in the described crystallizer flows in the cinder ladle.
Method according to above-mentioned is characterized in that, described electroslag liquid 2 temperature control is exceeding 50-80 ℃ than copper liquid temperature, and the liquid-tight degree of electroslag requires the low 10-20% of density than copper liquid, and the boiling point of electroslag liquid requires to be higher than 1900 ℃.
Beneficial effect of the present invention: use electroslag refining technology of the present invention to prepare the method for high-quality copper and copper alloy casting ingot, cancelled in traditional esr ingot casting production process, will be through twice fusing, the production technique of solidifying for twice to metal, technical process is short, production unit is simple, and energy expenditure is low, the production efficiency height, production cost is low, and ingot quality is higher.Can reduce the volatilization loss of slag, improve operating environment, alleviate environmental pollution.
Description of drawings
Fig. 1 is apparatus structure synoptic diagram of the present invention.
Embodiment
The method that electroslag refining technology of the present invention prepares copper and copper alloy casting ingot is to change copper liquid over to the porous heating electrode through chute, use crystallizer to carry out the water-cooled ingot casting three times through this porous heating electrode heating back, and feed electroslag night in described chute, electroslag hydrorrhea unnecessary in the crystallizer flows in the cinder ladle.The control of electroslag liquid 2 temperature is exceeding 50-80 ℃ than copper liquid temperature, the liquid-tight degree of electroslag requires the low 10-20% of density than copper liquid, and the boiling point of electroslag liquid requires to be higher than 1900 ℃.
Specifically describe the solution of the present invention referring now to Fig. 1:
Copper liquid 6 with induction furnace 5 or reverberatory furnace fusing changes porous heating electrode 10 over to by chute, and the metal after 10 heating of porous heating electrode imports metal pool 18.The size of copper flow quantity realizes by regulating flow control device 7, pulls out speeds match with ingot casting.Electrode device 8 effect be fixedly power cable, regulate the rise fall of electrodes height, and power for porous heating electrode 10; That electrode ceramic guide pin bushing 9 has is high temperature resistant, insulation and the fixedly effect of porous heating electrode 10, is embedded into the conducting block (not shown) in the ceramic guide pin bushing, is used for electric current is imported porous heating electrodes 10 from electrode device 8.Acting as of porous heating electrode 10 heated, heated up electroslag liquid 2 and copper alloy liquid 6, makes it reach technological temperature, and finishes copper liquid scavenging process.
Being melted in the electroslag melting appartus 1 of electroslag carried out, and the control of electroslag liquid 2 temperature is exceeding 50-80 ℃ than copper liquid 6 temperature, and the density requirements of slag liquid is than the low 10-20% of density of molten metal, and the boiling point of slag liquid requires to be higher than 1900 ℃.Be conducive to energy-conservation to the lower superheating temperature of slag control; Control lower density and guarantee that slag floats over the surface of molten metal all the time, the blocking-up hot metal contacts with air, prevents air-breathing, the oxidation of hot metal; To the boiling point that slag is had relatively high expectations, purpose is to reduce slag volatilization loss and contaminate environment.The size of electroslag liquid 2 flows realizes that by the gap of regulating between electroslag delivery conduit 3 and the electroslag hydraulic control stream device 4 guarantee in copper liquid 6 metaideophone processes, copper liquid 6 surfaces are covered by electroslag liquid 2 fully.
Electroslag liquid plays refining, purification, filteration to molten metal, copper liquid is before entering porous heating electrode 10 and after the outflow porous electrode, carried out twice refining, purification, filtration through electroslag liquid, the sulphur in the molten metal, hydrogen and burning are mingled with basically eliminate; Molten metal is heated to 1600-1700 ℃ by porous heating electrode 10 when flowing through porous heating electrode 10, be dissolved in the lower boiling metallic impurity in the alloy, is vaporized effusion, and the alloy that enters in the metal pool 18 is pure alloy liquid.
Copper liquid in the metal pool 18 is through crystallizer 15 coagulation formings, and the further cooling by secondary cooling water 19, three water coolants 21 forms high-quality electroslag refining ingot casting 20.Electroslag liquid unnecessary in the crystallizer flows into cinder ladle 13 by the overflow port on the crystallizer hot tap 14, electroslag chute 12.
Claims (3)
1. an electroslag refining technology prepares the method for copper and copper alloy casting ingot, it is characterized in that, described method changes the copper liquid of induction furnace or reverberatory furnace fusing over to the porous heating electrode through chute, import metal pool through this porous heating electrode heating back, copper liquid in the metal pool is through the crystallizer coagulation forming, by the further cooling formation electroslag refining ingot casting of secondary cooling water, three water coolants; Electroslag liquid unnecessary in the crystallizer flows into cinder ladle by the overflow port on the crystallizer hot tap, electroslag chute; Use the crystallizer ingot casting, and in described chute, feed electroslag liquid; Copper liquid is heated to 1600-1700 ℃ by described porous heating electrode when flowing through described porous heating electrode.
2. method according to claim 1 is characterized in that, ingot casting adopts three water-cooling patterns.
3. method according to claim 1 is characterized in that, described electroslag liquid temp control is exceeding 50-80 ℃ than copper liquid temperature, and the liquid-tight degree of electroslag requires the low 10-20% of density than copper liquid, and the boiling point of electroslag liquid requires to be higher than 1900 ℃.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN 201210076604 CN102605189B (en) | 2012-03-22 | 2012-03-22 | Method for preparing copper and copper-alloy cast ingots by electroslag refining technology |
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| CN 201210076604 CN102605189B (en) | 2012-03-22 | 2012-03-22 | Method for preparing copper and copper-alloy cast ingots by electroslag refining technology |
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| CN102605189A CN102605189A (en) | 2012-07-25 |
| CN102605189B true CN102605189B (en) | 2013-07-17 |
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| CN110586903B (en) * | 2019-10-29 | 2022-08-09 | 沈阳铸造研究所有限公司 | Electroslag remelting center feeding method |
| JP7433263B2 (en) * | 2021-03-03 | 2024-02-19 | 日本碍子株式会社 | Manufacturing method of Cu-Ni-Sn alloy |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101624657A (en) * | 2009-04-30 | 2010-01-13 | 上海大学 | Method for magnetic control electroslag remelting and high-efficiency refining high temperature alloy and device therefor |
| CN101985164A (en) * | 2010-11-30 | 2011-03-16 | 金川集团有限公司 | Copper and copper alloy casting equipment under protection of nitrogen |
| CN201906798U (en) * | 2010-12-04 | 2011-07-27 | 金川集团有限公司 | Copper and copper-alloy ingot casting device of nitrogen protection |
| CN102380588A (en) * | 2010-09-02 | 2012-03-21 | 辽宁科技大学 | Intermediate-frequency induction and directional solidification ingot casting process and equipment utilizing same |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| DE1912935A1 (en) * | 1969-03-14 | 1970-09-24 | Leybold Heraeus Gmbh & Co Kg | Device for cleaning metals by pouring the undercoat |
| US7617864B2 (en) * | 2006-02-28 | 2009-11-17 | Novelis Inc. | Cladding ingot to prevent hot-tearing |
| CN100999014A (en) * | 2006-12-15 | 2007-07-18 | 南昌大学 | Metal material surface slag fast uniform heating and compounding device |
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Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101624657A (en) * | 2009-04-30 | 2010-01-13 | 上海大学 | Method for magnetic control electroslag remelting and high-efficiency refining high temperature alloy and device therefor |
| CN102380588A (en) * | 2010-09-02 | 2012-03-21 | 辽宁科技大学 | Intermediate-frequency induction and directional solidification ingot casting process and equipment utilizing same |
| CN101985164A (en) * | 2010-11-30 | 2011-03-16 | 金川集团有限公司 | Copper and copper alloy casting equipment under protection of nitrogen |
| CN201906798U (en) * | 2010-12-04 | 2011-07-27 | 金川集团有限公司 | Copper and copper-alloy ingot casting device of nitrogen protection |
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