CN202015829U - Device for guiding pulse current into metal melt - Google Patents
Device for guiding pulse current into metal melt Download PDFInfo
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- CN202015829U CN202015829U CN2011200011243U CN201120001124U CN202015829U CN 202015829 U CN202015829 U CN 202015829U CN 2011200011243 U CN2011200011243 U CN 2011200011243U CN 201120001124 U CN201120001124 U CN 201120001124U CN 202015829 U CN202015829 U CN 202015829U
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Abstract
The utility model relates to a device for guiding pulse current into metal melt, and belongs to the fields of metallurgy and metal working. The device comprises four parts, namely consists of a conducting bar, an electrode and a support frame thereof, water cooling systems and a pulse power supply. The conducting bar is connected with the pulse power supply and the electrode respectively, and the electrode is inserted into the metal melt; and the conducting bar is formed by pressing two parallel metal plates together and sandwiching an insulating material between the two metal plates, both the conducting bar and the electrode are provided with the water cooling systems, and the temperatures of the conducting bar and the electrode are adjusted by adjusting water pressure or flow rate in the water cooling systems. The device solves the problem of guiding the pulse current into the metal melt, and has the advantages of compact structure, convenience for installation, low power loss on lines and capability of working for long time; the distance and the insertion depth of the electrode and the like can be adjusted according to the actual casting conditions; and the length and the trend of the conducting bar can also be properly adjusted according to the actual demand. The device can be applied to die casting, and can also be applied to continuous casting, for example, applied to a crystallizer or a tundish.
Description
Technical field
The utility model relates to and utilizes pulse current to improve metal solidification texture, belongs to metallurgy and metal manufacture field, is specially the device that a kind of pulse current imports metal bath.
Background technology
Because the solidified structure of metal to the performance of material and the follow-up very significant effects that is processed with, is controlled and the solidified structure that improves metal is one of major issue of being concerned about of material supplier author always.Especially for large-sized casting ingot/part, because setting time is long, also cause component segregation serious easily, particularly gross segregation is serious, and because ingot casting/part bulky, many methods of improving solidified structure commonly used can't be suitable for.
With respect to the traditional technology of improving solidified structure and method, utilize physical field improvement and thinning solidification structure to highlight its huge advantage, have advantages such as pollution-free to molten metal, that effect is remarkable, adaptability is strong usually, received people's very big concern.For example, the whole bag of tricks such as electromagnetic agitation, mechanical agitation or vibration, ultrasonic wave processing, pulsed magnetic field, pulse current progressively propose and grow up, and some method has also obtained successful application industrial.Wherein, since pulse current fine crystal solidification technology occurred from the nineties in last century, obtained significant progress through lot of domestic and foreign researcher joint efforts.External scholar, people such as Flemings, Conrad, Barnak for example, domestic scholar, people such as Li Jianmin, Cang Daqiang, Zhai Qijie, Wang Jianzhong, Zhao Zhilin for example, on different metal materials, adopt multiple processing mode, investigated the influence of paired pulses solidifying fine crystal technology such as pulse parameter and processing opportunity respectively, inquired into the thin brilliant mechanism of pulse current from multiple angles.
The applicant is through going deep into systematic research for a long time, accumulated abundant research experience, on the understanding of the thin brilliant mechanism of pulse current, obtained breakthrough progress, and applied for multinomial relevant patent of invention before this, simultaneously repeatedly carry out industrial test, obtained preliminary industrial applications.
In apply pulse electric current solidifying fine crystal technology, how to import the pulse electric current in the metal bath is an important difficult problem always.The scheme that adopts has two kinds at present, and a kind of is insoluble electrode, mainly is to adopt resistant to elevated temperatures conductive materials such as graphite or cermet to do electrode, and another kind is a soluble electrode, for example adopts the high-melting point metal material or does electrode with the metal to be treated same material.These two kinds of schemes all do not adopt water-cooling system.Before in a kind of scheme because graphite or ceramic-metallic fragility height, caused the difficulty installed, electrode long-term work simultaneously causes pollution to melt thereby also have a spot of dissolving in high-temperature fusant and not cooling; In a kind of scheme in back, because the dissolving of electrode has caused operational trouble, must constantly regulate electrode, but also may cause problems such as outage because of electrode fusing.
The applicant proposes to adopt the importing problem that solves electric current with material electrode or simple metal electrode and Water Cooling Technology at the shortcoming of these two kinds of schemes, has both solved the conduction problem, has prevented the pollution problem that the electrode dissolving brings again, has obtained good actual effect.
Summary of the invention
The purpose of this utility model be for the thin crystal technique of pulse current provide a kind of compact conformation, easy for installation, line loss is low, the practical pulse electric current gatherer that can work long hours.
The technical solution of the utility model is as follows:
A kind of pulse current imports the device of metal bath, has comprised busbar, electrode and bracing frame thereof, water-cooling system and the pulse power, and busbar connects the pulse power and electrode respectively.
The effect of described busbar is to connect the pulse power and electrode, and the pulse electric current is conducted to electrode; Busbar is pressed on by two parallel metallic plates to be formed together, and the centre accompanies the insulating materials of thickness less than 10mm, and this structure has not only guaranteed insulation but also reduced line loss; Adopt cross to be connected firmly between busbar and the power supply or between the busbar, the adjustment of each component locations had made things convenient for on-the-spot installation in this structure can realize among a small circle, can farthest reduce line loss again.On busbar and the electrode water-cooling system is housed all simultaneously, by regulating hydraulic pressure or flow in the water route, the temperature of regulating electric installations such as busbar and electrode.
Described electrode contacts and inserts certain depth with metal bath, its effect is that the pulse electric current is finally introduced in the metal bath.
Electrode adopts and metal bath same material or similar simple metal material, the implication of same material: can adopt when for example handling the bearing steel molten metal with the same material of this steel grade as electrode; The implication of similar simple metal material: can adopt pure iron when and for example handling the mould steel molten metal as electrode material, that is to say, electrode material was a pure iron when metal bath was steel, electrode material was a fine copper when metal bath was copper alloy, electrode material was a fine aluminium when metal bath was aluminium alloy, or the like.The dissolving of graphite causes the pollution to the metal to be treated material in the time of so just can avoiding adopting graphite or cermet as electrode, metal material is made electrode because its high toughness can guarantee the security of electrode in installation process and contact well with intensity simultaneously, avoids the fragility of electrodes such as graphite or cermet to bring the risk of installing.
The effect of described electrode holder is to be electrode location and support electrode, electrode is connected on the cross bar of electrode holder by the mode of activity, can regulate the relevant parameter that electrode inserts electrodes such as the degree of depth of melt and electrode spacing by regulating movable bindiny mechanism.Electrode holder is fixed on the pending metal bath in addition, promptly above crystallizer or rising head, realizes from the top electrode being introduced the metal bath.
Described busbar and electrode adopt the mode of the strong cooling of water here because the effect of the joule heating effect of pulse current and the heat of metal bath transmission etc. needs cooling, by regulating hydraulic pressure or flow, realize the control to busbar and electrode temperature.
The utlity model has following characteristics:
(1) the utility model can import to the pulse electric current in the metal bath effectively, and the loss on the circuit is low;
(2) the utility model compact conformation is easy for installation, and is safe and reliable to operation;
(3) the utility model can realize regulating neatly parameters such as battery lead plate spacing and insertion depth.
Description of drawings
Fig. 1 is the structural representation of pulse current gatherer of the present utility model; Wherein, 1 pulse power, 2 busbars, 3 water-cooling systems, 4 electrodes and bracing frame thereof, 5 crystallizers or rising head, 6 metal baths.
The specific embodiment
Illustrate that in conjunction with Fig. 1 pulse current imports the device of metal bath.
At first with pending metal bath (being specially crystallizer or mold) be benchmark roughly determine the pulse power lay place and position, simultaneously electrode and bracing frame integral hoisting thereof above pending metal bath; Secondly according to the height and the actual needs of melt liquid level, parameters such as the degree of depth of adjusting electrode insertion melt and electrode spacing will consider also that simultaneously the position of the electrode and the pulse power concerns; According to the position relation of on-site actual situations regulating impulse power supply and electrode, busbar is installed once more, the electrode and the pulse power is coupled together by busbar; According to the practical operation instruction startup power supply that is in due course, the start energising imports metal bath to the pulse electric current at last.
Pulse current flows out from the pulse power, is transmitted to electrode through busbar, imports in the metal bath through electrode, thereby realizes utilizing pulse current to handle the purpose of metal bath.Busbar and electrode need water cooling, by regulating hydraulic pressure or flow, realize the electric installation temperature controlling.Introduce two kinds of pulse current gatherers below in conjunction with example.
What present embodiment adopted is the water-cooling system of circumscribed, and pulse current imports in the Fe-Cr alloy, reaches the purpose of improving metal solidification texture.Electrode adopts and processed steel same material; Busbar adopts the red copper material, and two sides are welded with copper pipe, and electrode one side is circumscribed with the copper cooling jacket, and copper pipe and Copper Water Jacket have constituted water-cooling system jointly.The delivery port water temperature is not higher than 60 degrees centigrade, regulates discharge or hydraulic pressure with this index.
The feature of this structure is that the water cooling system manufacturing is simple, and whole installation weight is lighter.Package unit was installed required time less than one hour, actual motion 3 hours; Power attenuation on the circuit is than other connected mode, and the mode that for example is flexible coupling has reduced by 15%; After pulse current is handled, metal material improves significantly, for example, find that General Loosen has dropped to 1 from 1.5 after the ingot casting process low power analysis after the processing, center porosity does not occur, the carbon segregation index is compared more near 1 in addition, illustrates that handling the inner carbon of back steel ingot through pulse current is more evenly distributed, and the ultrasonic inspection testing result shows also that pulse current is handled and improved dense structure's degree of ingot casting or the like.
Present embodiment and last example are different, and water-cooling system is not a circumscribed and adopt embeddedly, and pulse current is directed in the Fe-Cr-Mo alloy, to reach the purpose of improving metal solidification texture.Busbar adopts thicker metallic plate, gets out many group through holes on busbar, and utilizes copper pipe that through hole is coupled together to have constituted a water circuit system.The delivery port water temperature is not higher than 60 degrees centigrade, regulates discharge or hydraulic pressure with this index.
The feature of this structure is that water cooling system is simple in structure, and whole device is modularization, and is easy for installation.Package unit was installed required time less than one hour, actual motion 6 hours; Power attenuation on the circuit is than other connected mode, and the mode that for example is flexible coupling has reduced by 14%; After pulse current was handled, metal material improved significantly, and for example, the rank of handling the banded carbide of ingot casting through pulse current has improved, and grain size also increases, and especially center porosity has obtained tangible improvement.
Above experimental result shows, the utility model can import to the pulse electric current in the metal bath safely and reliably, practical operation is convenient, energy loss is little on the circuit, can work long hours, the complexity that package unit is made is not high, and required expense is little, the requirement of pulse current solidifying fine crystal technology can be satisfied fully, the refining effect of pulse current can be realized metal solidification texture.
Claims (2)
1. a pulse current imports the device of metal bath, and it is characterized in that: this device comprises busbar, electrode and bracing frame thereof, water-cooling system and four parts of the pulse power, and busbar connects the pulse power and electrode respectively, and electrode inserts in the metal bath; Busbar is pressed on together by two parallel metallic plates and the centre accompanies insulating materials and constitutes, and water-cooling system all is housed on busbar and the electrode, by regulating hydraulic pressure or flow in the water-cooling system, the temperature of regulating busbar and electrode.
2. import the device of metal bath by the described pulse current of claim 1, it is characterized in that: electrode holder is fixed on the pending metal bath, and electrode is installed on the cross bar of electrode holder by the connected mode of activity; Electrode adopts and metal bath metal material of the same race, perhaps adopts the simple metal material similar with metal bath.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011200011243U CN202015829U (en) | 2011-01-05 | 2011-01-05 | Device for guiding pulse current into metal melt |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011200011243U CN202015829U (en) | 2011-01-05 | 2011-01-05 | Device for guiding pulse current into metal melt |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202015829U true CN202015829U (en) | 2011-10-26 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011200011243U Expired - Lifetime CN202015829U (en) | 2011-01-05 | 2011-01-05 | Device for guiding pulse current into metal melt |
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| Country | Link |
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| CN (1) | CN202015829U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102672146A (en) * | 2012-05-07 | 2012-09-19 | 上海交通大学 | Method for compositely refining solidification structure of magnesium alloy by combination of current and Zr |
| CN106424668A (en) * | 2016-09-13 | 2017-02-22 | 昆明理工大学 | Method for improving corrosion resistance of cast iron casting |
| CN117548636A (en) * | 2024-01-11 | 2024-02-13 | 中北大学 | Method for treating metal liquid by electric pulse in continuous solidification process |
-
2011
- 2011-01-05 CN CN2011200011243U patent/CN202015829U/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102672146A (en) * | 2012-05-07 | 2012-09-19 | 上海交通大学 | Method for compositely refining solidification structure of magnesium alloy by combination of current and Zr |
| CN106424668A (en) * | 2016-09-13 | 2017-02-22 | 昆明理工大学 | Method for improving corrosion resistance of cast iron casting |
| CN117548636A (en) * | 2024-01-11 | 2024-02-13 | 中北大学 | Method for treating metal liquid by electric pulse in continuous solidification process |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20111026 |