CN104138922A - Production equipment and process of copper-clad aluminum bimetal composite wire rod - Google Patents
Production equipment and process of copper-clad aluminum bimetal composite wire rod Download PDFInfo
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- CN104138922A CN104138922A CN201410289005.0A CN201410289005A CN104138922A CN 104138922 A CN104138922 A CN 104138922A CN 201410289005 A CN201410289005 A CN 201410289005A CN 104138922 A CN104138922 A CN 104138922A
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Abstract
The invention relates to production equipment and process of a copper-clad aluminum bimetal composite wire rod, belonging to the technical field of metal material processing. The production equipment is composed of a heating element, a molten aluminum temperature control crucible, a core metal pouring stopper rod, a temperature measurement instrument, a pressure mechanism, an extrusion stem, a hollow hole forming pin, an extruding barrel, an extruding mold, a cooling device, a water tank, a tensioning mechanism and a winding machine. The production process comprises the following steps: a copper billet is placed in the extruding barrel and an aluminum ingot is placed in the temperature control crucible, heat is preserved after the heating element outside the extruding barrel is heated to be at the required temperature, the extrusion stem moves downwards under the action of the pressure mechanism to punch and extrude the copper billet in the extruding barrel to form a clad copper pipe; when the copper pipe is extruded out of a mold, the core metal molten aluminum pouring stopper rod is pulled, molten aluminum is sucked in the copper pipe under the action of the negative pressure in the pipe and solidified, is further cooled by the cooling device and the water tank, then passes through the tensioning mechanism, and finally is reeled and collected on the winding machine. The equipment is simple, the technological process is short, and both the equipment and the process are suitable for large-scale production; the prepared copper-clad aluminum wire rod has accurate boundary dimension, core metal has no casting defect, and the interface of outer layer metal copper and core metal aluminum is clean and free of pollution, and therefore, a good metallurgical bonding effect is achieved.
Description
Technical field:
The production equipment and process of a kind of copper cover aluminum bimetallic composite wire rod provided by the invention, belongs to metal material processing technical field.
Background technology:
Copper cover aluminum bimetallic composite wire rod (Copper clad aluminum, CCA) be at the concentric coated copper layer of aluminum core line outer surface, make two kinds of metals form a bulk metal wire rod in the interatomic metallurgical binding of interface formation, ensure, under the prerequisite of serviceability, to possess the advantage of two kinds of metals simultaneously.Copper cover aluminum bimetallic composite wire rod has good conductivity, density is little, and quality is soft, good, the easy soldering of corrosion resistance, lower-price characteristic, is the novel substitute products of pure copper core cable.In the time of high-frequency transmission, due to the effect of " kelvin effect ", electric current concentrates on the superficial layer transmission of conductor especially, and application copper-clad aluminum conductor not only can reduce use cost, and can ensure good signal transmission quality.If be applied to using copper cover aluminum bimetallic composite wire rod less diameter as light-duty electromagnetic wire in Aero-Space, instrument coil, computer, electronic equipment and sound equipment coil, there is higher added value.At present the processing method of copper cover aluminum bimetallic composite wire rod is a lot, substantially can be divided into solid-solid phase composite algorithm and the large class of liquid-solid phase composite algorithm two (see: Xu Gaolei etc., non-ferrous metals processing, Vol.37, No.4 (2008), p.6).Gu-solid phase composite algorithm comprises that rolling is compound, lateral compression is compound, continuously extruded compound, and drawing is compound etc.; Liquid-solid phase composite algorithm comprises core-filled and continuously casted, horizontal casting direct combination be shaped (see: thank build new etc., a kind of coating material horizontal continuous casting direct recombination forming apparatus and technique, Chinese patent: ZL200610112817.3) etc.Gu-although solid phase composite algorithm can ensure good appearance and size requirement, it is firmly metallurgical to closing that interface bond strength is difficult to reach; Core-filled and continuously casted method in liquid-solid phase composite algorithm is to adopt upper and lower two firing equipments, core metal and outer layer metal are melted respectively in upper and lower two heaters, when temperature in two heaters reaches the temperature of regulation, under the effect of the dummy bar drawing at motor power, traction outer sphere molten metal enters crystallizer, in crystallizer and mozzle, form outer layer metal tube, core metal liquid enters in outer layer metal tube thereupon, then under certain pulling rate, realizes the compound of core metal and outer layer metal.The general principle that horizontal casting direct combination is shaped is similar to core-filled and continuously casted method, different is dummy bar draw direction from vertically becoming level, therefore increased the length of goods.Because the outer copper pipe in liquid-solid phase composite algorithm is casting copper pipe, there are intrinsic some tissue defects of casting in it, as loose, and shrinkage cavity or shrink unequal, affect the quality of copper cover aluminum bimetallic composite wire rod, the bimetallic composite wire rod of pair cross-section complex contour is difficult to processing.The present invention proposes a kind of production equipment and process of novel copper cover aluminum bimetallic composite wire rod, the method that perforation extruding is filled core in conjunction with continuous casting has overcome above-mentioned deficiency, not only make outer field copper pipe there is extrusion tissue's structure, simultaneously, extruding of outer copper pipe, make to manage the negative pressure of interior formation, in the time forming aluminium core, effectively avoided the situation of feeding deficiency to occur.By the design of extrusion die, outer copper pipe cross sectional shape is no longer subject to any restriction.Interface between outer copper and aluminium core is metallurgical binding, thereby has ensured the intensity of combination.
Summary of the invention:
The object of the present invention is to provide a kind of production equipment and process of copper cover aluminum bimetallic composite wire rod, can realize the short flow process preparation of copper cover aluminum bimetallic wire, equipment is simple, energy-conservation, and production efficiency is high, is applicable to large specification suitability for industrialized production.The method that perforation extruding is filled core in conjunction with continuous casting not only makes outer field copper pipe have extrusion tissue's structure, and meanwhile, extruding of outer copper pipe, makes to manage the negative pressure of interior formation, has effectively avoided the situation of feeding deficiency to occur in the time forming aluminium core.By the design of extrusion die, outer copper pipe cross sectional shape is no longer subject to any restriction.Interface between outer copper and aluminium core is metallurgical binding firmly, thereby has ensured the intensity of combination.
Equipment of the present invention is watered stopping bar 3, temperature measurer 4, pressure mechanism 5, pressure ram 7, perforated hollow pin 8, recipient 10, extrusion die 11, cooling device 13, tank 14, tension mechanism 15 and winder 16 and is formed by heating element heater 1, aluminium hydraulic control temperature crucible 2, core metal.In the pressure ram 7 that aluminium hydraulic control temperature crucible 2 is embedded in recipient 10, the centre bore of aluminium hydraulic control temperature crucible 2 flow exports and pecker 8 joins.Pecker 8 is connected with pressure ram 7, and extrusion die 11 is arranged on the bottom of recipient 10, and center, the center of perforated hollow pin 8 and the center of extrusion die 11 nibs of aluminium hydraulic control temperature crucible 2 tap holes are on same axis; Heating element heater 1 is equipped with in the outside of recipient 10, and tank 14 is arranged on the bottom of cooling device 13, and tension mechanism 15 is arranged between tank 14 and winder 16.
Technical process of the present invention is for to put into recipient 10 by copper base, aluminium ingot is put into temperature control crucible 2, the heating element heater 1 of recipient 10 outsides is warmed up to 700-950 DEG C, and insulation 10-200min, under the effect of pressure mechanism 5, pressure ram 7 moves down, to the extruding of boring a hole of the copper base in recipient 10, form clad copper pipe, extrusion speed is 1～600mm/min, extrusion ratio is 5～30, and the cross section of tubing is circular, square, star, flat or complicated odd-shaped cross section; In the time of copper pipe extrusion die, that pulls open core metal aluminium liquid waters stopping bar 3, due to the effect of negative pressure in pipe, aluminium liquid is inhaled in copper pipe and solidifies, further cooling rear by tension mechanism 15, last at cooling device 13 and tank 14, on winder 16, carry out curling collection.The extruded velocity of curling gathering speed and extrude tubes product is consistent, and the type of cooling can adopt water-cooled (water-jet velocity is 1-2000mm/s) or air-cooled (wind speed is 1-5000mm/s).
The invention has the advantages that:
1. the temperature control crucible 2 that core metal aluminium liquid is housed is inlaid in pressure ram 7 upper surfaces, and the centre bore of the flow export of temperature control crucible 2 and pecker 8 is connected to form the cast passage of aluminium liquid; When perforation extruding forms copper pipe, aluminium liquid injects the inside of copper pipe by cast passage, fuse and solidify, and realizes the direct forming of copper cover aluminum bimetallic composite wire rod.Device structure of the present invention is simple, and technological process is short, convenient operation, energy-conserving and environment-protective.
2. the temperature control crucible 2 of aluminium liquid is inlaid in pressure ram 7 upper surfaces, can realize core metal aluminium liquid and outer layer metal copper in copper cover aluminum bimetallic composite wire rod and heat simultaneously, effectively reduces the quantity of heating element heater and reduces the consumption of the energy.
3. the outer layer metal copper pipe that extruding forms is with respect to casting copper pipe, and interior tissue and dimensional accuracy are more intact and accurate, except being shaped pipe, square tube, and the odd-shaped cross section tubing of also can be shaped star pipe, flat tube and complicated shape.
4. core metal aluminium liquid enters after cast passage, can not contact with outside air again, does not have oxide to generate; The copper pipe inner surface that perforation is extruded is unsalted surface, does not also contact with outside air, can not form oxide.Therefore, the copper cover aluminum interface of acquisition is the compound interface cleaning completely.
5. the copper pipe that perforation extruding forms is the inner negative pressure that forms in the time of extrusion die, along with the length of pipe increases, internal negative pressure power increases, aluminium liquid can be inhaled into the inside of copper pipe under the effect of negative pressure, form negative pressure casting, improved the performance of the solidified structure of core metal aluminium, the internal flaw while having removed conventional cast, as shrinkage cavity, loose etc.
Brief description of the drawings:
Below in conjunction with accompanying drawing, the present invention is further illustrated:
Fig. 1 is a kind of equipment schematic diagram of the present invention.Wherein, heating element heater 1, core metal temperature control crucible 2, core metal is watered stopping bar 3, temperature measurer 4, pressure mechanism 5, core metal liquid 6, pressure ram 7, perforated hollow pin 8, clad metal 9, recipient 10, extrusion die 11, core metal solid liquid interface 12, cooling device 13, tank 14, tension mechanism 15, winder 16.
Detailed description of the invention:
Fig. 1 is a kind of detailed description of the invention of present device.Its equipment is by pressure mechanism 5, recipient 10, and pressure ram 7, extrusion die 11, clad metal 9, perforated hollow pin 8, heating element heater 1 and temperature measurer 4 form outer layer metal copper pipe extrusion system; Temperature control crucible 2, core metal is watered stopping bar 3, perforated hollow pin 8, heating element heater 1, temperature measurer 4, cooling device 13 and tank 14 form the casting solidification system of core metal aluminium liquid; Formed the gathering system of product by tension mechanism 15 and winder 16.Heating element heater 1 adopts resistance heated or induction heating mode.Temperature control crucible 2 and water stopping bar 3 and adopt refractory material or cermet.Recipient 10, pressure ram 7, extrusion die 11 and perforated hollow pin 8 adopt hot die steel.Cooling device 13 adopts water-cooled or air cooling way.Pressure mechanism 5 adopts common forcing press or special extruder.
Forming technology embodiment 1: the diameter 10mm of copper cover aluminum bimetallic composite wire rod, clad copper metal thickness 2mm.Temperature measurer 4 adopts thermocouple direct temperature measurement; Heating element heater 1 adopts resistance wire directly to heat.Temperature control crucible 2 and water stopping bar 3 and adopt corundum to make.Cooling device 13 adopts water-cooled, water-jet velocity 1000mm/s; Pressure mechanism 5 adopts common forcing press.The temperature of core metal temperature control crucible 2 is controlled at 900 DEG C, insulation 60min.Extrusion ratio is 20, and perforation extrusion speed is 300mm/min, in the time of copper pipe extrusion die, opens and waters stopping bar 3, opens cooling device 13; Open tension mechanism 15, the speed that regulates the speed of rolling to extrude with product is consistent, and acquisition appearance and size is accurate, and interface is in conjunction with good, and inside is without the copper cover aluminum bimetallic composite wire rod of obvious cast sturcture defect.
Forming technology embodiment 2: the diameter 5mm of copper cover aluminum bimetallic composite wire rod, clad copper metal thickness 1mm.Temperature measurer 4 adopts thermocouple direct temperature measurement; Heating element heater 1 adopts eddy-current heating.Temperature control crucible 2 and water stopping bar 3 and adopt refractory material to make.Cooling device 13 adopts air-cooled, wind speed 3000mm/s; Pressure mechanism 5 adopts common forcing press.The temperature of core metal temperature control crucible 2 is controlled at 950 DEG C, insulation 120min.Extrusion ratio is 30, and perforation extrusion speed is 100mm/min, in the time of copper pipe extrusion die, opens and waters stopping bar 3, opens cooling device 13; Open tension mechanism 15, the speed that regulates the speed of rolling to extrude with product is consistent, and acquisition appearance and size is accurate, and interface is in conjunction with good, and inside is without the copper cover aluminum bimetallic composite wire rod of obvious cast sturcture defect.
Claims (6)
1. a copper cover aluminum bimetallic composite wire rod former, is watered stopping bar 3, temperature measurer 4, pressure mechanism 5, pressure ram 7, perforated hollow pin 8, recipient 10, extrusion die 11, cooling device 13, tank 14, tension mechanism 15 and winder 16 and is formed by heating element heater 1, aluminium hydraulic control temperature crucible 2, core metal; It is characterized in that: in the pressure ram 7 that aluminium hydraulic control temperature crucible 2 is embedded in recipient 10, the centre bore of aluminium hydraulic control temperature crucible 2 flow exports and pecker 8 joins.Pecker 8 is connected with pressure ram 7, and extrusion die 11 is arranged on the bottom of recipient 10, and center, the center of perforated hollow pin 8 and the center of extrusion die 11 nibs of aluminium hydraulic control temperature crucible 2 tap holes are on same axis; Heating element heater 1 is equipped with in the outside of recipient 10, and tank 14 is arranged on the bottom of cooling device 13, and tension mechanism 15 is arranged between tank 14 and winder 16.
2. one kind by equipment forming copper cladding aluminum bimetallic composite wire rod technique described in claim 1, it is characterized in that: copper base is put into recipient 10, aluminium ingot is put into temperature control crucible 2, the heating element heater 1 of recipient 10 outsides is warmed up to after assigned temperature, insulation, under the effect of pressure mechanism 5, pressure ram 7 moves down, to the extruding of boring a hole of the copper base in recipient 10, form clad copper pipe; In the time of copper pipe extrusion die, that pulls open core metal aluminium liquid waters stopping bar 3, due to the effect of negative pressure in pipe, aluminium liquid is inhaled in copper pipe and solidifies, further cooling rear by tension mechanism 15, last at cooling device 13 and tank 14, on winder 16, carry out curling collection.
3. copper cover aluminum bimetallic composite wire rod forming technology according to claim 2, is characterized in that heating element heater 1 is warmed up to 700-950 DEG C, insulation 10-200min.
4. copper cover aluminum bimetallic composite wire rod forming technology according to claim 2, the extrusion speed that it is characterized in that copper pipe is 1～600mm/min, and extrusion ratio is 5～30, and the cross section of tubing is circular, square, star, flat or complicated odd-shaped cross section.
5. copper cover aluminum bimetallic composite wire rod forming technology according to claim 2, is characterized in that the type of cooling can adopt water-cooled or air-cooled, and when water-cooled, water-jet velocity is 1-2000mm/s, and when air-cooled, wind speed is 1-5000mm/s.
6. copper cover aluminum bimetallic composite wire rod forming technology according to claim 2, is characterized in that the extruded velocity of curling gathering speed and extrude tubes product is consistent.
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| CN201410289005.0A CN104138922B (en) | 2014-06-25 | 2014-06-25 | A kind of production equipment and process of copper cover aluminum bimetallic composite wire rod |
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| CN104138922B CN104138922B (en) | 2016-01-06 |
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Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104493113A (en) * | 2014-11-27 | 2015-04-08 | 北京科技大学 | Long carbon fiber and metal composite continuous casting machine and process |
| CN105689425A (en) * | 2016-01-28 | 2016-06-22 | 广东省材料与加工研究所 | Forming device and method for metal-cladding wire |
| CN106785771A (en) * | 2016-12-28 | 2017-05-31 | 菏泽海诺知识产权服务有限公司 | A kind of seamless V-type trolley producing device and its copper strips unwinding device |
| CN107931346A (en) * | 2017-12-26 | 2018-04-20 | 徐州安诚矿山设备有限公司 | A kind of new and effective extruder |
| CN109482833A (en) * | 2019-01-08 | 2019-03-19 | 重庆市润金新材料研究院有限公司 | A kind of bonding gold wire continuous casting furnace |
| CN109909479A (en) * | 2018-12-27 | 2019-06-21 | 北京科技大学 | A kind of bimetallic composite wire material short flow process |
| CN110252994A (en) * | 2019-07-23 | 2019-09-20 | 福建省三星电气股份有限公司 | A kind of mold casting aluminium copper-clad contact and the technique with mold production contact |
| CN112404378A (en) * | 2020-12-03 | 2021-02-26 | 周敏 | Processing method of anti-bending aluminum bar composite high-strength steel wire |
| CN115194127A (en) * | 2021-04-12 | 2022-10-18 | 张靖 | Direct composite forming equipment and process for extrusion casting of metal clad bar |
| CN117920779A (en) * | 2024-03-21 | 2024-04-26 | 常州艾邦机械科技有限公司 | Double-rod cladding structure |
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Cited By (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104493113A (en) * | 2014-11-27 | 2015-04-08 | 北京科技大学 | Long carbon fiber and metal composite continuous casting machine and process |
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| CN106785771B (en) * | 2016-12-28 | 2019-05-10 | 菏泽海诺知识产权服务有限公司 | A kind of seamless V-type trolley producing device and its copper strips unwinding device |
| CN106785771A (en) * | 2016-12-28 | 2017-05-31 | 菏泽海诺知识产权服务有限公司 | A kind of seamless V-type trolley producing device and its copper strips unwinding device |
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| CN109909479A (en) * | 2018-12-27 | 2019-06-21 | 北京科技大学 | A kind of bimetallic composite wire material short flow process |
| CN109482833A (en) * | 2019-01-08 | 2019-03-19 | 重庆市润金新材料研究院有限公司 | A kind of bonding gold wire continuous casting furnace |
| CN110252994A (en) * | 2019-07-23 | 2019-09-20 | 福建省三星电气股份有限公司 | A kind of mold casting aluminium copper-clad contact and the technique with mold production contact |
| CN110252994B (en) * | 2019-07-23 | 2023-12-19 | 福建省三星电气股份有限公司 | Die for casting aluminum-clad copper contact and process for producing contact by using die |
| CN112404378A (en) * | 2020-12-03 | 2021-02-26 | 周敏 | Processing method of anti-bending aluminum bar composite high-strength steel wire |
| CN115194127A (en) * | 2021-04-12 | 2022-10-18 | 张靖 | Direct composite forming equipment and process for extrusion casting of metal clad bar |
| CN115194127B (en) * | 2021-04-12 | 2024-01-05 | 张靖 | Extrusion casting direct composite forming equipment and process for metal clad bar |
| CN117920779A (en) * | 2024-03-21 | 2024-04-26 | 常州艾邦机械科技有限公司 | Double-rod cladding structure |
| CN117920779B (en) * | 2024-03-21 | 2024-05-17 | 常州艾邦机械科技有限公司 | Double-rod cladding structure |
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