CN1392009A - Electromagnetic continuous casting method for fine copper, aluminium and alloy rod masterbatch - Google Patents
Electromagnetic continuous casting method for fine copper, aluminium and alloy rod masterbatch Download PDFInfo
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- CN1392009A CN1392009A CN 02138056 CN02138056A CN1392009A CN 1392009 A CN1392009 A CN 1392009A CN 02138056 CN02138056 CN 02138056 CN 02138056 A CN02138056 A CN 02138056A CN 1392009 A CN1392009 A CN 1392009A
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Abstract
The present invention relates to electromagnetic field suspending technology, and under the action of electromagnetic field molten copper, aluminium and alloy is suspended in a special crystallizer to orient and solidify continuous with excellent surface. Owing to the strong electromagentic field stirring and sprayed water cooling, excellent inner structure is obtained through oriented solidification. The features include excellent material surface quality, homogeneous element distribution without segregation, compact and fine crystal grain less oxide inclusion and low solid pinhole rate and high material utilization.
Description
Affiliated technical field
The present invention relates to the preparation method of the masterbatch of a kind of thin copper and aluminium and alloy pole stock thereof.
Background technology
Thin copper, aluminium and alloy pole stock purposes thereof are extremely extensive, again these pole stock continuities are worked into very thin wire rod usually and are applied to electronic devices and components, electric wire.
Copper at present commonly used, aluminium alloy pole stock masterbatch are continuous casting and rolling, hot top continuous casting, upward-casting process etc., and all these technology all have common fatal shortcoming; Surface quality is poor, thick loose, the tensile strength of interior tissue and percentage elongation is low, oxide inclusion is serious.Serious and the poor mechanical property at high-speed wire-drawing process interrupt line.
Summary of the invention
For solving above-described deficiency, enhance productivity and mechanics, electric property, the invention provides the electromagnetic continuous casting method of a kind of thin copper and aluminium and alloy rod masterbatch thereof.
The technical solution adopted for the present invention to solve the technical problems is: the electromagnetic continuous casting method of a kind of thin copper and aluminium and alloy rod masterbatch thereof, prepare thin copper and aluminium and alloy rod masterbatch thereof with the strong cold method of electromagnetic suspension continuous casting, electromagnetic agitation and water spray, have following technological process: at first carry out inductor and make, induction coil is rolled into copper bar; Feed 2500Hz, 30-100V power supply, adjust power, making the electromagnetism intensity in the inductor is 25mT-100mT, and when being added with stirring coil, adjusting the electromagnetism intensity that stirs induction coil is 20-100mT; To carry out refining degasification impurity elimination stand-by with putting into tundish behind the aluminum alloy melting; Insert cooling water channel; The dummy ingot base is adjusted to the crystallizer lower end part; Open cooling water, inductor power, treated aluminum alloy melt is poured onto in the crystallizer through the running channel woven hose, when liquid level rises to the inductor middle part, open the pulling haulage gear, the 15-40cm/min that regulates the speed stablizes continuous casting and finishes until continuous casting.
Operation principle of the present invention is to provide the electric current of 1000Hz-100000Hz, 20-3000A and low-frequency power that frequency 5-100Hz electric current 20-3000A is provided by middle and high frequency power, import respectively in the special induction crystallizer of a Φ 6mm-Φ 120mm or square, the melting furnace liquid metal injects in the crystallizer through tundish, woven hose, make liquid metal at the effect low suspension of electromagnetic field in crystallizer, by in, under the electromagnetic agitation of low frequency magnetic field brute force, by the continuous tractive of constant speed haulage gear, add cooling medium, make strand make oriented rapid solidification and realize continuous casting.
Preparation method of the present invention, advanced design, technology is reasonable, and method is simple, and is with low cost, and the aluminium alloy wires after processes of the present invention has following characteristics; 1, have good surface quality.2, segregation-free, elementary composition is even.3, dense structure, crystal grain is tiny, the equiaxed zone ratio height.4, good permeability, pinhole rate is low.5, oxide inclusion is few.6, tensile strength improves 30%, and percentage elongation improves 25%.
The specific embodiment
Alloy designations is 1070 aluminium, and the diameter that requires alloy pig is 10mm, 100 kilograms of charging weights.Its electromagnetic continuous-casting technology is: 1, inductor is made; Induction coil is rolled into internal diameter φ 12mm with copper bar, height 40mm, and the number of turns is 1 circle.2, feed 2500Hz, 30-100V power supply, adjust power, making the electromagnetism intensity in the inductor is 25-100mT.(when being added with stirring coil, the electromagnetism intensity that adjust to stir induction coil is 20-100mT, this example approach do not add stir inductor) 3, to carry out refining degasification impurity elimination stand-by with putting into tundish behind the aluminum alloy melting.4, insert cooling water channel.5, the dummy ingot base is adjusted to the crystallizer lower end part.
Operational procedure: open cooling water, inductor power, treated aluminum alloy melt is poured onto in the crystallizer through the running channel woven hose, when liquid level rises to the inductor middle part, opens hauling machine, the 15-40cm/min that regulates the speed makes that continuous casting is stable to be finished until continuous casting.
Claims (8)
1, the electromagnetic continuous casting method of a kind of thin copper and aluminium and alloy rod masterbatch thereof, it is characterized in that preparing thin copper and aluminium and alloy rod masterbatch thereof with the strong cold method of electromagnetic suspension continuous casting, electromagnetic agitation and water spray, have following technological process: at first carry out inductor and make, induction coil is rolled into copper bar; Feed 2500Hz, 30-100V power supply, adjust power, making the electromagnetism intensity in the inductor is 25mT-100mT, and when being added with stirring coil, adjusting the electromagnetism intensity that stirs induction coil is 20-100mT; To carry out refining degasification impurity elimination stand-by with putting into tundish behind the aluminum alloy melting; Insert cooling water channel; The dummy ingot base is adjusted to the crystallizer lower end part; Open cooling water, inductor power, treated aluminum alloy melt is poured onto in the crystallizer through the running channel woven hose, when liquid level rises to the inductor middle part, open the pulling haulage gear, the 15-40cm/min that regulates the speed stablizes continuous casting and finishes until continuous casting.
2, the electromagnetic continuous casting method of thin copper according to claim 1 and aluminium and alloy rod masterbatch thereof is characterized in that: described electromagnetic induction crystallizer is made up of the induction coil of open circles, square copper pipe, row's coiling.
3, the electromagnetic continuous casting method of thin copper according to claim 1 and aluminium and alloy rod masterbatch thereof, it is characterized in that: the pulsating current frequency of described electromagnetic inductor is 1000Hz-100000Hz, current strength is 20--3000A, stir the power frequency 5-100Hz of inductor, current strength is 20-3000A.
4, the electromagnetic continuous casting method of thin copper according to claim 1 and aluminium and alloy rod masterbatch thereof is characterized in that: the diameter of described circle induction crystallizer is from 6mm-120mm, and the side responds to the 10mm * 10mm-120mm * 120mm of crystallizer.
5, the electromagnetic continuous casting method of thin copper according to claim 1 and aluminium and alloy rod masterbatch thereof is characterized in that: the inwall of described induction crystallizer has resistant to elevated temperatures composite ceramics or has pottery and low magnetic conduction, exotic material such as graphite, austenitic stainless steel etc. to be composited.
6, the electromagnetic continuous casting method of thin copper according to claim 1 and aluminium and alloy rod masterbatch thereof, it is characterized in that: described inductor can use middle and high frequency electromagnetic induction separately, also can stir simultaneously with low frequency electromagnetic and use, the electromagnetism intensity when using middle and high frequency electromagnetic inductor separately is 10-100mT.
7, the electromagnetic continuous casting method of thin copper according to claim 1 and aluminium and alloy rod masterbatch thereof is characterized in that: described molten metal supply mode comprises straight notes, tiltedly annotates, pours in down a chimney, flood is inhaled etc.
8, the electromagnetic continuous casting method of thin copper according to claim 1 and aluminium and alloy rod masterbatch thereof is characterized in that: described thin copper and aluminium and alloy rod masterbatch thereof comprise billet, square ingot, bar, band etc.; Described thin copper and aluminium and alloy rod masterbatch thereof comprise fine aluminium and alloy, copper and alloy thereof and other metal alloy compositions; Thin copper and aluminium and alloy rod masterbatch thereof comprise circle, the electromagnetic casting of square ingot and hot extrusion, hot rolling system and the semisolid moulding of stirring and billet; Thin copper and aluminium and alloy rod masterbatch thereof are equally applicable to electronic component down-lead, micro type electromagnetic wire and electric wire.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 02138056 CN1392009A (en) | 2002-08-02 | 2002-08-02 | Electromagnetic continuous casting method for fine copper, aluminium and alloy rod masterbatch |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 02138056 CN1392009A (en) | 2002-08-02 | 2002-08-02 | Electromagnetic continuous casting method for fine copper, aluminium and alloy rod masterbatch |
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| Publication Number | Publication Date |
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| CN1392009A true CN1392009A (en) | 2003-01-22 |
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| CN 02138056 Pending CN1392009A (en) | 2002-08-02 | 2002-08-02 | Electromagnetic continuous casting method for fine copper, aluminium and alloy rod masterbatch |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1320972C (en) * | 2005-09-02 | 2007-06-13 | 哈尔滨工业大学 | Rectangular cold crucible system suitable for continuous fusion casting directional freeze |
| CN100368121C (en) * | 2005-09-02 | 2008-02-13 | 哈尔滨工业大学 | Directional freeze method for TiAl-based alloy plate |
| CN1745919B (en) * | 2005-09-26 | 2013-10-16 | 刘定平 | Magnetic suspended continuous metal casting and near net shape residual heat hot rolling process |
| CN104722945A (en) * | 2013-12-18 | 2015-06-24 | 中国兵器科学研究院宁波分院 | Ultra-fine grain aluminum alloy gold welding wire and preparation method thereof |
| CN108251658A (en) * | 2018-02-05 | 2018-07-06 | 江苏金海铝业有限公司 | A kind of method of directional solidification extraction ultra-pure aluminum under electromagnetic agitation |
-
2002
- 2002-08-02 CN CN 02138056 patent/CN1392009A/en active Pending
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1320972C (en) * | 2005-09-02 | 2007-06-13 | 哈尔滨工业大学 | Rectangular cold crucible system suitable for continuous fusion casting directional freeze |
| CN100368121C (en) * | 2005-09-02 | 2008-02-13 | 哈尔滨工业大学 | Directional freeze method for TiAl-based alloy plate |
| CN1745919B (en) * | 2005-09-26 | 2013-10-16 | 刘定平 | Magnetic suspended continuous metal casting and near net shape residual heat hot rolling process |
| CN104722945A (en) * | 2013-12-18 | 2015-06-24 | 中国兵器科学研究院宁波分院 | Ultra-fine grain aluminum alloy gold welding wire and preparation method thereof |
| CN108251658A (en) * | 2018-02-05 | 2018-07-06 | 江苏金海铝业有限公司 | A kind of method of directional solidification extraction ultra-pure aluminum under electromagnetic agitation |
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