CN102601325A - Method for preparing copper-aluminum composite bar by means of horizontally continuous casting - Google Patents
Method for preparing copper-aluminum composite bar by means of horizontally continuous casting Download PDFInfo
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- CN102601325A CN102601325A CN2012101096619A CN201210109661A CN102601325A CN 102601325 A CN102601325 A CN 102601325A CN 2012101096619 A CN2012101096619 A CN 2012101096619A CN 201210109661 A CN201210109661 A CN 201210109661A CN 102601325 A CN102601325 A CN 102601325A
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Abstract
The invention discloses a method for preparing a copper-aluminum composite bar by means of horizontally continuous casting. The method is characterized by including: (1) preparing an aluminum or aluminum alloy bar by a horizontally continuous casting method; and (2) coating a copper or copper alloy layer on the surface of the aluminum or aluminum alloy bar by means of directional solidification technology. By the aid of the method for preparing the copper-aluminum composite bar by means of horizontally continuous casting, the process flow of the metal composite pipe bar can be greatly shortened, and cast ingot heating, cast ingot extrusion and pipe billet rolling procedures of a traditional production process are decreased. As a coating cast ingot is in a directional solidification structure, a copper-aluminum bonding interface layer is a metallurgical composite layer, and the quality of the produced composite pipe bar is greatly improved.
Description
Technical field
The invention belongs to the metallurgical casting technical field, relate in particular to a kind of preparation method of horizontal casting copper aluminium composite bar.
Background technology
Copper has favorable conductive, heat conductivility, is power industry, supplies the distribution field to use extremely wide non-ferrous metal conductor material.The density of copper is big, and shortage of resources, particularly copper valency promotion are in recent years given production and used the enterprise of copper conductor to increase very big cost pressure.The conductive capability of aluminium is 60% of a copper, and density is merely 30% of copper, and price also is merely about 35% of copper.Owing to have kelvin effect during the metallic conductor current-carrying, people usually utilize the low-density of the high conductivity of copper and aluminium, characteristics cheaply, produce have high conductivity, copper aluminum composite pipes bar cheaply, the metallic conductor of replacement fine copper.Existing copper aluminum composite pipes bar is to adopt the preparation of mechanical stretching composite algorithm; The general pressure processing means of using earlier of this method; Copper is closed aluminium be prepared into tubing or bar respectively, it is compound then copper pipe and aluminum pipe or copper pipe and aluminium bar to be stretched, and processes composite pipe or bar.The subject matter that exists is: the one, and the interface of composite combines insecure, and result of use is not good.The 2nd, production procedure is long, productivity ratio is low, production process is numerous and diverse.The 3rd, need carry out system head, stretching, crop, annealing, the pickling processes of multi-pass, system head, crop reduce lumber recovery, and annealing, pickling have increased energy consumption and metal loss, and production cost is high.
Summary of the invention
The present invention is exactly the deficiency that exists to prior art, proposes a kind of preparation method of horizontal casting copper aluminium composite bar.
Above-mentioned purpose realizes through following proposal:
A kind of preparation method of horizontal casting copper aluminium composite bar is characterized in that said preparation method comprises: (1) adopts horizontal continuous casting method to prepare aluminum or aluminum alloy gold bar; (2) adopt directional solidification technique, coat layer of copper or copper alloy on said aluminum or aluminum alloy bar surface.
Preparation method according to above-mentioned is characterized in that, in above-mentioned steps (2), when copper or molten alloyed copper coat aluminium bar, adopt complex copper layer crystallizer to carry out moulding, and this complex copper layer crystallizer does not use cooling water that copper or molten alloyed copper are cooled off; Use cooling water to carry out the secondary cooling then.
Preparation method according to above-mentioned is characterized in that, in above-mentioned steps (1), uses the aluminium bar crystallizer once to cool off in the preparation process of aluminum or aluminum alloy bar, uses cooling water to carry out the secondary cooling then.
Beneficial effect of the present invention: use the preparation method of horizontal casting copper aluminium composite bar of the present invention, can shorten the technological process of composite metal pipe bar greatly; Reduce metal loss, improve lumber recovery, reduce production costs; Can reduce ingot casting heating, ingot casting extruding, the pipe rolling process of traditional processing technology; Cut in the middle of reducing, intermediate annealing, middle pickling, middle transhipment 22 passages; Improve lumber recovery 30%; Reduce production costs 40%.Because the clad ingot structure is oriented freezing organization, and copper-aluminium combination interface layer be metallurgical compound, and the excellent quality of the multiple tube of being produced improves greatly.
Description of drawings
Fig. 1 is horizontal casting copper of the present invention-aluminium composite bar sketch map.
The specific embodiment
The preparation method of horizontal casting copper aluminium composite bar of the present invention comprises: (1) adopts horizontal continuous casting method to prepare aluminum or aluminum alloy gold bar; (2) adopt directional solidification technique, coat layer of copper or copper alloy on said aluminum or aluminum alloy bar surface.Use the aluminium bar crystallizer once to cool off in the step (1) in the preparation process of aluminum or aluminum alloy bar, use cooling water to carry out the secondary cooling then.It is characterized in that, adopt twice continuous horizontal continuous casting method to prepare copper aluminium composite bar.In the step (2); When copper or molten alloyed copper coat aluminium bar, adopt complex copper layer crystallizer to carry out moulding, and this complex copper layer crystallizer does not use cooling water that copper or molten alloyed copper are cooled off; Clad heats aluminum or aluminum alloy bar surface through copper or molten alloyed copper; Impel aluminum or aluminum alloy bar top layer metal melting, aluminum or aluminum alloy bar top layer metal heats up, fusing needs to absorb great amount of heat, thereby realized the once cooling to copper or molten alloyed copper; The secondary cooling forming of clad is the cooling effect that relies on the high strength cooling water that secondary cooling water provides, and realizes directional solidification.
Aluminium liquid can be electrolytic aluminium liquid, can use shaft furnace melting remelted aluminum ingot or the aluminium and the aluminium alloy foundry returns of induction furnace, reverberatory furnace, high-speed melting-aluminium.Aluminium liquid insulation foundry furnace can be induction furnace, reverberatory furnace or electric furnace.The melting of copper and copper alloy is best with the induction furnace.The present invention is that example describes with induction melting, induction insulation.
Referring to Fig. 1, the present invention uses equipment to comprise aluminium and aluminium alloy smelting stove and horizontal caster, copper and smelting copper alloy stove and the tundish of being with heating, device for directionally solidifying, draw-gear, checkout gear, scale saw cutting device etc.Production system is formed and is comprised fine aluminium and aluminium alloy and copper and smelting copper alloy stove (not shown); Horizontal casting induction holding furnace 1; Induction melting furnace upper furnace body 2; Inductor 3; Fine aluminium and aluminium alloy 4; Channel 5; Front panel 6; Aluminium bar crystallizer 7; Horizontal casting aluminium bar secondary cooling water 8; Horizontal casting aluminium bar 9; Temperature control component 10; Copper and smelting copper alloy stove (not shown); The copper liquid tundish 11 of band heating; Copper liquid 12; Depositing 13; Stopper 13a; Complex copper layer crystallizer 14; Crystallizer baffle plate 15; Complex copper layer secondary cooling water 16; Horizontal casting copper aluminium compound bar 17; Draw-gear 18; Scale sawing machine 19.
Horizontal casting induction holding furnace 1 is made up of power-supply system, holding furnace upper furnace body 2, channel 5, holding furnace inductor 3, front panel 6, crystallizer 7, temperature of aluminum liquid display instrument and water-cooled cable etc.Horizontal casting induction holding furnace 1 adopts " O " type unicoil jet inductor, and inductor is made up of water cooled housing, iron core, water collar, water cooled coil and molten channel mould etc.Horizontal casting induction holding furnace 1 can be installed on the walking cart, moves horizontally with the walking cart.The walking cart adopts shaped steel and steel plate welding, and the car body top is provided with the base plate that weighing device is installed.
The casting device of aluminum or aluminum alloy is to be fixed on the horizontal casting holding furnace 1 through front panel 6, and aluminium bar crystallizer 7 is fastened on the front panel 6 through bolt.During casting, utilize dummy bar and draw-gear 18 that horizontal casting aluminium bar 9 is drawn from aluminium bar crystallizer 7.The secondary cooling is carried out to horizontal casting aluminium bar 9 in certain-length position after horizontal casting aluminium bar 9 is drawn.The purpose of setting up secondary cooling water 8 is will the temperature of horizontal casting aluminium bar 9 be reduced to about 110-130 ℃ as early as possible, prevents that the casting rod from surperficial severe oxidation taking place in the high-temperature region.The temperature of horizontal casting aluminium bar 9 is controlled at the purpose about 110-130 ℃, is to utilize horizontal casting aluminium bar 9 self temperature will cast the secondary cooling water evaporation on rod surface, creates conditions for follow-up horizontal casting aluminium bar 9 surfaces coat the copper layers.The effect of temperature control component 10 is the surface temperatures that are used for detection level continuous casting aluminium bar 9, and regulates, controls the intensity of cooling of secondary cooling water 8.
The resulting pure metallic copper liquid of main frequency furnace melting in the copper liquid tundish 11 of band heating, in the copper liquid exit position of tundish 11, is provided with the stopper 13a of depositing 13 and control copper flow quantity through the siphon pipe metaideophone.Horizontal casting aluminium bar 9 passes through from the middle part of crystallizer 14, and the copper liquid that flows out through depositing 13 cools off in crystallizer 14, moulding, forms the clad of copper on the surface of horizontal casting aluminium bar 9.Complex copper layer crystallizer 14 itself is not with any cooling medium, flows out from the gap of horizontal casting aluminium bar 9 and complex copper layer crystallizer 14 for preventing high-temperature copper liquid, in the aluminium bar entry position of crystallizer crystallizer baffle plate 15 is set.Copper liquid 12 heats the aluminium bar surface after getting into complex copper layer crystallizer 14, impels aluminium bar top layer metal melting, and aluminium bar top layer metal heats up, fusing needs to absorb great amount of heat, thereby realized the once cooling to copper liquid.The secondary cooling forming of clad is the cooling effect that relies on the high strength cooling water that secondary cooling water 16 provides, and realizes directional solidification.Copper aluminium composite bar is drawn through draw-gear 18.Become cut lengths through 19 sawings of scale sawing machine.
Claims (3)
1. the preparation method of a horizontal casting copper aluminium composite bar is characterized in that said preparation method comprises: (1) adopts horizontal continuous casting method to prepare the aluminum or aluminum alloy bar; (2) adopt directional solidification technique, coat layer of copper or copper alloy on said aluminum or aluminum alloy bar surface.
2. preparation method according to claim 1; It is characterized in that, in above-mentioned steps (2), when copper or molten alloyed copper coat aluminium bar; Adopt complex copper layer crystallizer to carry out moulding, and this complex copper layer crystallizer does not use cooling water that copper or molten alloyed copper are cooled off; Use cooling water to carry out the secondary cooling then.
3. preparation method according to claim 1 and 2 is characterized in that, in above-mentioned steps (1), uses the aluminium bar crystallizer once to cool off in the preparation process of aluminium and rods and bars of aluminium alloy, uses cooling water to carry out the secondary cooling then.
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| Application Number | Priority Date | Filing Date | Title |
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| CN2012101096619A CN102601325A (en) | 2012-04-16 | 2012-04-16 | Method for preparing copper-aluminum composite bar by means of horizontally continuous casting |
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| CN2012101096619A CN102601325A (en) | 2012-04-16 | 2012-04-16 | Method for preparing copper-aluminum composite bar by means of horizontally continuous casting |
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Cited By (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104148598A (en) * | 2014-09-01 | 2014-11-19 | 北京科技大学 | Clad material solid/liquid composite dual-solidification continuous casting and forming equipment and method |
| CN104588618A (en) * | 2014-11-28 | 2015-05-06 | 太原科技大学 | Continuous casting device and continuous casting method of magnesium alloy composite board |
| CN106077536A (en) * | 2016-08-22 | 2016-11-09 | 福达合金材料股份有限公司 | A kind of apparatus and method of dual-stream continuous casting plied timber sheet material |
| CN106111922A (en) * | 2016-06-28 | 2016-11-16 | 北京科技大学 | A kind of copper-coated aluminium composite material high efficiency continuous casting former and technique |
| CN106636792A (en) * | 2016-12-29 | 2017-05-10 | 宁波市胜源技术转移有限公司 | High-electric-conductivity composite metal |
| CN108465789A (en) * | 2018-03-27 | 2018-08-31 | 北京科技大学 | A kind of bi-metal composite panel continuous casting direct forming equipment and technique |
| CN110076324A (en) * | 2019-06-10 | 2019-08-02 | 常州齐丰连续挤压设备有限公司 | A kind of moulding process and equipment of zinc-aluminium composite material |
| CN110369683A (en) * | 2019-08-09 | 2019-10-25 | 大连理工大学 | A kind of bearing bush antifriction layer copper alloy fills type device and a kind of preparation method of bearing shell double metallic composite material |
| CN110653358A (en) * | 2019-10-09 | 2020-01-07 | 中铁建电气化局集团康远新材料有限公司 | Continuous extrusion equipment for large-length melt-infiltration type copper-steel composite wire |
| CN110883321A (en) * | 2019-10-18 | 2020-03-17 | 安徽枫慧金属股份有限公司 | High-performance extrusion casting aluminum alloy for lightweight new energy automobile parts |
| EP3553793A4 (en) * | 2016-12-07 | 2020-05-06 | Yan Tai Fisend Bimetal Co.,Ltd. | High-bonding strength copper-aluminum composite conductive material and preparation method therefor |
| CN112705581A (en) * | 2020-12-15 | 2021-04-27 | 广州科技职业技术大学 | Intelligent cooling device for aluminum profile forming |
| CN113770319A (en) * | 2021-07-26 | 2021-12-10 | 北京科技大学 | Composite dummy bar and method for stainless steel coated carbon steel liquid-solid composite continuous casting |
| CN114247859A (en) * | 2021-12-28 | 2022-03-29 | 中科金龙金属材料开发有限公司 | Composite wire water-free cooling process |
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Cited By (21)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104148598B (en) * | 2014-09-01 | 2016-01-20 | 北京科技大学 | A kind of clad material dual solidifying continuously casting former of solid-liquid compound and method |
| CN104148598A (en) * | 2014-09-01 | 2014-11-19 | 北京科技大学 | Clad material solid/liquid composite dual-solidification continuous casting and forming equipment and method |
| CN104588618A (en) * | 2014-11-28 | 2015-05-06 | 太原科技大学 | Continuous casting device and continuous casting method of magnesium alloy composite board |
| CN106111922A (en) * | 2016-06-28 | 2016-11-16 | 北京科技大学 | A kind of copper-coated aluminium composite material high efficiency continuous casting former and technique |
| CN106111922B (en) * | 2016-06-28 | 2018-07-31 | 北京科技大学 | A kind of copper-coated aluminium composite material high efficiency continuous casting former and technique |
| CN106077536A (en) * | 2016-08-22 | 2016-11-09 | 福达合金材料股份有限公司 | A kind of apparatus and method of dual-stream continuous casting plied timber sheet material |
| CN106077536B (en) * | 2016-08-22 | 2018-11-27 | 福达合金材料股份有限公司 | A kind of apparatus and method of dual-stream continuous casting plied timber plate |
| EP3553793A4 (en) * | 2016-12-07 | 2020-05-06 | Yan Tai Fisend Bimetal Co.,Ltd. | High-bonding strength copper-aluminum composite conductive material and preparation method therefor |
| CN106636792A (en) * | 2016-12-29 | 2017-05-10 | 宁波市胜源技术转移有限公司 | High-electric-conductivity composite metal |
| CN108465789A (en) * | 2018-03-27 | 2018-08-31 | 北京科技大学 | A kind of bi-metal composite panel continuous casting direct forming equipment and technique |
| CN110076324A (en) * | 2019-06-10 | 2019-08-02 | 常州齐丰连续挤压设备有限公司 | A kind of moulding process and equipment of zinc-aluminium composite material |
| CN110369683A (en) * | 2019-08-09 | 2019-10-25 | 大连理工大学 | A kind of bearing bush antifriction layer copper alloy fills type device and a kind of preparation method of bearing shell double metallic composite material |
| CN110369683B (en) * | 2019-08-09 | 2020-06-02 | 大连理工大学 | Bearing bush antifriction layer copper alloy mold filling device and preparation method of bearing bush bimetal composite material |
| CN110653358A (en) * | 2019-10-09 | 2020-01-07 | 中铁建电气化局集团康远新材料有限公司 | Continuous extrusion equipment for large-length melt-infiltration type copper-steel composite wire |
| CN110653358B (en) * | 2019-10-09 | 2024-04-12 | 中铁建电气化局集团康远新材料有限公司 | Continuous extrusion equipment for large-length melt infiltration type copper-steel composite wire |
| CN110883321A (en) * | 2019-10-18 | 2020-03-17 | 安徽枫慧金属股份有限公司 | High-performance extrusion casting aluminum alloy for lightweight new energy automobile parts |
| CN112705581A (en) * | 2020-12-15 | 2021-04-27 | 广州科技职业技术大学 | Intelligent cooling device for aluminum profile forming |
| CN113770319A (en) * | 2021-07-26 | 2021-12-10 | 北京科技大学 | Composite dummy bar and method for stainless steel coated carbon steel liquid-solid composite continuous casting |
| CN113770319B (en) * | 2021-07-26 | 2023-03-10 | 北京科技大学 | Composite dummy bar and method for stainless steel coated carbon steel liquid-solid composite continuous casting |
| CN114247859A (en) * | 2021-12-28 | 2022-03-29 | 中科金龙金属材料开发有限公司 | Composite wire water-free cooling process |
| CN114247859B (en) * | 2021-12-28 | 2023-08-08 | 中科金龙金属材料开发有限公司 | Composite wire anhydrous cooling process for through ground wire |
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Application publication date: 20120725 |