CN109055771B - ESR system and its electrode replace control device - Google Patents
ESR system and its electrode replace control device Download PDFInfo
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- CN109055771B CN109055771B CN201810945795.1A CN201810945795A CN109055771B CN 109055771 B CN109055771 B CN 109055771B CN 201810945795 A CN201810945795 A CN 201810945795A CN 109055771 B CN109055771 B CN 109055771B
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22B—PRODUCTION AND REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
- C22B9/00—General processes of refining or remelting of metals; Apparatus for electroslag or arc remelting of metals
- C22B9/16—Remelting metals
- C22B9/18—Electroslag remelting
Abstract
The present invention provides a kind of ESR systems and its electrode to replace control device.Described device includes electrode position detection unit, molten bath electrical signal detection unit, crystallizer mouth detection unit, control unit.Control unit receives the first electric signal, first electrode is promoted with First Speed until first position, first electrode is persistently promoted from first position with second speed, receive second location information, first electrode is persistently promoted to the third place, with third speed decline second electrode until the 4th position and continuing declines the distance of the difference of first and second position, make second electrode decline with fourth speed until detection obtains the electric signal for being essentially close to the first electric signal again, wherein, first position is obtained by electrode position detection and molten bath electrical signal detection unit matching, second, four positions obtain with electrode position detection and crystallizer mouth detection unit.The present invention can be improved the replacement speed of consutrode, be conducive to improve production efficiency and ingot blank quality and performance.
Description
Technical field
The invention belongs to metallurgy equipment and control technology fields, it relates in particular to which one kind can be improved consutrode more
The electrode replacement control device of the ESR system of throw-over degree and a kind of electroslag weight including electrode replacement control device
Molten system.
Background technique
In general, electroslag remelting process can get the ingot blank of crystalline structure even compact, it is widely used in specialty metal and height
The production of quality steel alloy.It can be to adopt extensively at present by one big steel ingot of more electrode productions using exchange consutrode
Form.For single-phase electric slag furnace, exchanging Electrode Operation must have a power failure, and interrupting melting declines bath temperature, overlong time
Slag runner can be generated or cause to crack in ingot blank forging process.Current exchange electrode is soundd out liquid level position, is needed using manual operation
Skilled operating technology and time is indefinite, directly affects the quality and production efficiency of ESR ingot, and influence process reproducibility.
Further, since the solid-liquid interface that electroslag furnace consutrode bottom is formed in fusion process can not be surveyed directly
Amount, causes consutrode position to be difficult accurately to judge.Traditional consutrode position control, generally by operator in furnace
Preceding viewing and practical manual operation are to complete.
Summary of the invention
It is an object of the invention to solve at least one in deficiencies of the prior art.For example, of the invention
The first purpose is to provide a kind of electrode replacement control device and its electroslag remelting that can be improved or improve electrode replacement speed
System.Can be improved or improve another object of the present invention is to provide one kind electrode replacement speed and be conducive to it is automatic or half from
The electrode replacement control device and its ESR system of dynamic control.
An aspect of of the present present invention provides a kind of electrode replacement control device of ESR system, the electrode replacement control
Device processed includes electrode position detection unit, molten bath electrical signal detection unit, crystallizer mouth detection unit, control unit.Wherein,
The molten bath electrical signal detection unit is configurable for the electric signal that detection disconnects the molten bath of melting high voltage；The crystallizer
Mouth detection unit is configured to the first electrode that detection is mounted on the horn of ESR system and leaves crystallizer mouth
At the time of or the second electrode that is mounted on horn of detection at the time of enter crystallizer mouth；The electrode position detection unit quilt
It is configured to the location information of first electrode or second electrode that detection is mounted on horn；Described control unit is configured
Are as follows: the first electric signal for receiving molten bath electrical signal detection unit controls the electrode drive mechanism of electroslag remelting device with the first speed
Degree persistently promotes first electrode until first position, and coordination electrode driving mechanism is with second speed by first electrode from first position
It is lasting to be promoted, second location information is received, persistently promotes first electrode to the third place, coordination electrode driving mechanism is with third speed
Degree decline second electrode is up to the 4th position and continues at a distance from the difference for declining first position and the second position, and coordination electrode is driven
Motivation structure makes second electrode decline obtain being essentially close to the until electrical signal detection unit in molten bath detects again with fourth speed
The electric signal of one electric signal.Wherein, the first position is the telecommunications that detects in the molten bath electrical signal detection unit
The electrode position that number change dramatically moment corresponding electrode position detection unit detects, the second position are the knot
It is single that the first electrode that brilliant device mouth detection unit detects leaves corresponding electrode position detection at the time of crystallizer mouth
The electrode position that member detects, the third place are the position of replaceable electrode, and the 4th position is the crystallizer mouth
The second electrode that detection unit detects enters corresponding electrode position detection unit detection at the time of crystallizer mouth
The electrode position arrived, First Speed are less than second speed, and fourth speed is less than third speed.
Another aspect provides a kind of ESR system, the ESR system includes crystallizer, electricity
Polar arm, electrode drive mechanism, high-voltage electrical apparatus component and control assembly, and the ESR system further includes with electrode
Position detection unit, molten bath electrical signal detection unit, crystallizer mouth detection unit and control unit electrode replacement control dress
It sets.Wherein, the molten bath electrical signal detection unit is configurable for the electric signal that detection disconnects the molten bath of melting high voltage；Institute
It states crystallizer mouth detection unit and is configured to the first electrode that is mounted on the horn of ESR system of detection and leave
At the time of crystallizer mouth or at the time of the second electrode that is mounted on horn of detection enters crystallizer mouth；The electrode position inspection
Survey the location information that unit is configured to first electrode or second electrode that detection is mounted on horn；The control is single
Member is configured as: being received the first electric signal of molten bath electrical signal detection unit, is controlled the electrode drive mechanism of electroslag remelting device
First electrode is persistently promoted with First Speed until first position, coordination electrode driving mechanism with second speed by first electrode from
First position is persistently promoted, and receives second location information, persistently promotes first electrode to the third place, coordination electrode driving mechanism
Up to the 4th position and continued at a distance from the difference for declining first position and the second position with third speed decline second electrode, and controlled
Electrode drive mechanism processed obtains second electrode decline substantially up to electrical signal detection unit in molten bath detects again with fourth speed
Close to the electric signal of the first electric signal, wherein the first position is is detected in the molten bath electrical signal detection unit
To the electrode position that detects of the electric signal change dramatically moment corresponding electrode position detection unit, the second position
Corresponding electrode position at the time of leaving crystallizer mouth by the first electrode that the crystallizer mouth detection unit detects
The electrode position that detection unit detects is set, the third place is the position of replaceable electrode, and the 4th position is described
The second electrode that crystallizer mouth detection unit detects enters corresponding electrode position detection at the time of crystallizer mouth
The electrode position that unit detects, First Speed are less than second speed, and fourth speed is less than third speed.
Compared with prior art, beneficial effects of the present invention include one or more in following aspect:
1, structure is simple, and installation is easy to operate, and input cost is low.
2, rapid to electroslag furnace consutrode position tracking, control precision height.
3, it realizes the fast automatic replacement of consutrode, improves casting quality and process reproducibility.
Detailed description of the invention
Fig. 1 shows the structural schematic diagram of an exemplary embodiment of ESR system according to the present invention.
Fig. 2 shows the usage mode schematic diagrames of an exemplary embodiment of ESR system according to the present invention.
Specific embodiment
Hereinafter, the ESR system that the present invention will be described in detail and its electrode will be come (also in conjunction with exemplary embodiment
Can be described as consutrode) replacement control device.
Fig. 1 shows the structural schematic diagram of an exemplary embodiment of ESR system according to the present invention, wherein
I shows the first electrode in regular furnace run；II shows the first electrode in first position；III is shown
First electrode in the second position.As shown in Figure 1, in an exemplary embodiment of the present invention, ESR system can
Including crystallizer, horn (transverse arm as shown in figure 1), electrode drive mechanism (not shown), high-voltage electrical apparatus component (not shown), control
Component (not shown) and electrode processed replace control device.Here, crystallizer, horn, electrode drive mechanism, high-voltage electrical apparatus
Component, control assembly etc. can be with the corresponding devices of any existing electroslag remelting device (for example, electroslag refining furnace, electroslag furnace)
It is identical.
In the present example embodiment, electrode replacement control device may include electrode position detection unit A, molten bath electric signal
Detection unit B, crystallizer mouth detection unit C and control unit (not shown).
Specifically, electrical signal detection unit in molten bath is configurable for the telecommunications that detection disconnects the molten bath of melting high voltage
Number.For example, molten bath electrical signal detection unit can by be able to detect disconnect melting high voltage molten bath such as electric current, resistance and
Any one in the signals such as voltage or two or more detection circuits.For example, the voltage of detection circuit can be DC voltage.
In order to safer, detection circuit here can be lower voltage, for example, being 5V~24V.But the present exemplary embodiment is unlimited
In this, or the circuit with higher or lower voltage.
Crystallizer mouth detection unit is configured to the first electricity that detection is mounted on the horn of ESR system
At the time of crystallizer mouth is left in pole, and can be after using second electrode replacement first electrode, detection is mounted on horn
Second electrode at the time of enter crystallizer mouth.For example, crystallizer mouth detection unit may include being arranged in crystallizer port (example
Such as, the upper port for the crystallizer mouth placed vertically) at for detecting electrode enter and leave crystallizer mouth moment photoelectricity
(for example, laser-correlation infrared photoelectric switch sensor) or imaging sensor are switched (for example, camera collection image and real-time
The sensor of identification).But present exemplary embodiment is not limited to this, for example, crystallizer mouth detection unit may also be arranged on except crystallization
The other positions of device port, as long as moment of crystallizer mouth can be entered and left detecting electrode in time.
Electrode position detection unit is configured to detect the first electrode or second electrode being mounted on horn
Location information.Preferably, in order to be more accurate, electrode position detection unit is configured to detection and is just mounted on electrode at present
First electrode (for example, can be the first electrode or first electrode to be replaced that normal smelting terminates) or the second electricity on arm
The location information at the melting end (that is, closer to the one end in molten bath) of pole.Certainly, in the present exemplary embodiment, location information should
It is interpreted as including the information such as distance, displacement or height.For example, electrode position detection unit may include displacement sensor or position
Sensor.In addition, electrode position detection unit may be provided on horn or the non-melting end of consutrode (that is, further from
The one end in molten bath), for example, being arranged on the vertical principal arm of horn or being arranged on the support arm of horn.
Control unit can be configured to: can receive the first electric signal as provided by the electrical signal detection unit of molten bath, control
Electrode drive mechanism processed promotes first electrode to first position (H as shown in figure 1 with First Speed1), coordination electrode driving mechanism
First electrode is persistently promoted from first position with second speed, is during which received second as provided by electrode position detection unit
Position (H as shown in figure 12), and first electrode is persistently promoted to the third place with second speed；Then, coordination electrode driving machine
Structure declines the second electrode after replacement up to the 4th position with third speed and continues the difference of decline first position and the second position
Distance (h as shown in figure 1), and coordination electrode driving mechanism declines second electrode with fourth speed, until molten bath electricity
Detecting signal unit stops decline when detecting the electric signal for obtaining being essentially close to the first electric signal again, to complete electrode more
It changes.That is, can be controlled by the electric signal in real-time detection molten bath with the end time of fourth speed decline second electrode.
It is described that there is the electric signal for being essentially close to the first electric signal can be equal or slightly larger than or be slightly less than the first electric signal.For example,
It is described have be essentially close to the first electric signal electric signal can be the first electric signal 90%~110%, further may be used
Think 95%~105%.Specifically, described that there is the electric signal for being essentially close to the first electric signal can be set according to electroslag remelting
Standby concrete type, electrode type, electrical signal types etc. determine.First electric signal is by molten bath electrical signal detection unit
The electric signal detected to molten bath when disconnecting after melting high voltage and also not promoting first electrode is (for example, resistance, electricity
Stream, voltage), being able to reflect (in other words, will be from first electrode when stopping melting in first electrode or terminating melting
Before being promoted in molten bath) the electrical characteristics information such as resistance, electric current, the voltage in molten bath.
Wherein, the first position can be to promote the process of first electrode (in other words, in first electrode from molten bath
The process of promotion) described in electric signal (for example, resistance) change dramatically (example for detecting of molten bath electrical signal detection unit
Such as, change maximum knee value) electrode position that arrives of moment corresponding electrode position detection unit real-time detection.The second
Set corresponding electrode at the time of can leaving crystallizer mouth by the first electrode that the crystallizer mouth detection unit detects
The electrode position that position detection unit real-time detection arrives.The third place is the position of replaceable electrode, smoothly to realize
Electrode replacement.For example, the third place can be slightly above the second position, so as to safer replacement electrode.4th position
Corresponding electrode position at the time of crystallizer mouth can be entered by the second electrode that the crystallizer mouth detection unit detects
Set the electrode position that detection unit real-time detection arrives.Here, First Speed is less than second speed, and fourth speed is less than third speed
Degree.First Speed can slow speed, second speed can be quick speed.Third speed can quick speed,
Four speed can be slow speed.Be conducive to the accuracy of detection in this way and improve electrode replacement speed.
After completing electrode replacement, the connection of molten bath electrical signal detection unit and molten bath can be disconnected, and connect electroslag remelting
The high voltage of system, to realize the melting to second electrode.
In addition, the ESR system can be in above-mentioned example in another exemplary embodiment of the invention
It further comprise electrode handling unit on the basis of embodiment.Electrode handling unit can be configured to can be from horn
Disassembly first electrode simultaneously installs second electrode on horn.Certainly, loading and unloading can also be by conventional lifting utensil come real
It is existing, or also can by the movement of crystallizer, and be provided with mountable more than two consutrodes horn or can pivot
Turn horn of (for example, can rotate around the axis) etc. to realize.
In addition, the horn (can be described as both arms electrode) includes energy in another exemplary embodiment of the invention
The first support arm of first electrode is enough installed and the second support arm of second electrode, and the first support arm and second can be installed
Arm be able to carry out pivot or rotation so that second support arm replacement first support arm position, to realize the installed in second support arm
Two electrodes replace the position of the first electrode in first support arm, in order to more rapidly and easily replace electrode.Here, first
Support arm, second support arm can have common binding site or can be integrated to jointly on a main shaft (for example, vertical main shaft).Example
Such as, first support arm and second support arm can be in the shape of the letter V structure.Specifically, for example, the first electrode of both arms horn and the second electricity
Pole can be separately mounted in first support arm and second support arm with vertical direction (being equivalent to the two in parallel), in the first electricity
When pole reaches the third place, by pivot (for example, being pivoted by central axes of vertical direction), second support arm is used to realize
On second electrode replacement first support arm on first electrode.For another example, the first electrode of both arms horn is installed with vertical direction
In first support arm, second electrode is mounted in second support arm with the direction (for example, 30 °~60 °) at an acute angle with vertical direction
(for example, the two is in a manner of above extended line intersection and crystallizer) installation, when first electrode reaches the third place, passes through rotation
Turn that first electrode is made to be in the direction in vertical direction with acute angle, and second electrode is in vertical direction, to realize in second support arm
Second electrode replaces the position of the first electrode in first support arm.
Fig. 2 shows the usage mode schematic diagrames of an exemplary embodiment of ESR system according to the present invention.
ESR system and its electrode change control device can be realized by mode as shown in Figure 2 with computer software programming
Electrode change control.In Fig. 2, B indicates the molten bath electrical signal detection device for being used for real-time detection molten bath electric signal；R1Indicate first
The resistance of electric signal；N indicates "No", and Y indicates "Yes"；H1Indicate first position；H2Indicate the second position；H indicates H1With H2Between
Distance difference；H0Indicate the 4th position.
In addition, the ESR system can be in above-mentioned example in another exemplary embodiment of the invention
It is on the basis of embodiment, described control unit and the control assembly is integrally-formed.For example, having the control is single
First industrial personal computer integrated with the control assembly.In addition, controlling for convenience or operation, or small-sized for equipment
Change etc., it can be under the enlightenment of the above various exemplary embodiment and its function of each section component or component, to different components
Or component is integrated.For example, for an exemplary embodiment of electrode replacement control device, it can be existing normal
Transformation current and voltage signals are tapped from former isolating transmitter in rule ESR system, and Current Voltage can also connect from signal source
Out, that is, current transformer is smelted to isolation transmitting module to USB acquisition module, and voltage is from voltage transformer is smelted to isolation change
Send module to USB acquisition module, so as to further decrease to realize replacement electrode function and increased cost.
In conclusion ESR system of the invention and its above exemplary embodiments of electrode replacement control device have
Conducive to speed of the replacement for the consutrode of electroslag remelting is improved, to improve production efficiency, and can be because shortening electrode
Replacing construction and the quality and performance for improving ingot blank or ESR ingot.In addition, also advantageously improving the degree of automation and technique is steady
Qualitative and reproducibility.In addition, although ESR system of the invention and its electrode replacement control device are more suitable for needing
Large-scale or biggish ingot blank or ESR ingot are formed using the consutrode (may be simply referred to as electrode) more than two or three to smelt
The case where；However, it also can be used for other the case where needing replacing electrode, for example, even if the also non-melting of previous consutrode is complete,
But as long as there are requirements or emergency case of smelting process or operation etc. to need replacing electrode, electroslag weight of the invention can be used
Molten system and its electrode replacement control device carry out electrode replacement.
Although having been combined exemplary embodiment above and attached drawing describing the present invention, those of ordinary skill in the art
It will be apparent to the skilled artisan that can be carry out various modifications to above-described embodiment in the case where not departing from spirit and scope of the claims.
Claims (10)
1. a kind of electrode of ESR system replaces control device, which is characterized in that the electrode replaces control device and includes
Electrode position detection unit, molten bath electrical signal detection unit, crystallizer mouth detection unit, control unit, wherein
The molten bath electrical signal detection unit is configurable for the electric signal that detection disconnects the molten bath of melting high voltage；
The crystallizer mouth detection unit is configured to the first electricity that detection is mounted on the horn of ESR system
At the time of the second electrode being mounted on horn at the time of crystallizer mouth is left in pole with detection enters crystallizer mouth；
The electrode position detection unit is configured to detect the first electrode and second electrode being mounted on horn
Location information；
Described control unit is configured as: being received the first electric signal of molten bath electrical signal detection unit, is controlled electroslag remelting device
Electrode drive mechanism first electrode is promoted until first position with First Speed, coordination electrode driving mechanism will with second speed
First electrode is persistently promoted from first position, receives second location information, persistently promotes first electrode to the third place, control electricity
Pole driving mechanism declines second electrode up to the 4th position with third speed and continues the difference of decline first position and the second position
Distance, and coordination electrode driving mechanism with fourth speed make second electrode decline until molten bath electrical signal detection unit examine again
The electric signal for being essentially close to the first electric signal is measured,
Wherein, the first position is electric signal change dramatically moment for detecting in the molten bath electrical signal detection unit
The electrode position that the corresponding electrode position detection unit detects, the second position are the crystallizer mouth detection unit
The first electrode detected the electrode that the corresponding electrode position detection unit detects at the time of leaving crystallizer mouth
Position, the third place are the position of replaceable electrode, and the 4th position is detected by the crystallizer mouth detection unit
The obtained second electrode electrode position that the corresponding electrode position detection unit detects at the time of entering crystallizer mouth.
2. the electrode of ESR system according to claim 1 replaces control device, which is characterized in that first speed
Degree is less than second speed, and fourth speed is less than third speed.
3. the electrode of ESR system according to claim 1 replaces control device, which is characterized in that the molten bath electricity
Detecting signal unit is configurable for one or more in the resistance, electric current and voltage in the molten bath of detection disconnection melting high voltage
It is a.
4. the electrode of ESR system according to claim 1 replaces control device, which is characterized in that the crystallizer
Mouth detection unit includes optoelectronic switch or imaging sensor.
5. a kind of ESR system, the ESR system includes crystallizer, horn, electrode drive mechanism, high-voltage electricity
Pneumatic module and control assembly, which is characterized in that the ESR system further includes electrode replacement control device, the electrode
Replacement control device includes electrode position detection unit, molten bath electrical signal detection unit, crystallizer mouth detection unit, control list
Member, wherein
The molten bath electrical signal detection unit is configurable for the electric signal that detection disconnects the molten bath of melting high voltage；
The crystallizer mouth detection unit is configured to the first electricity that detection is mounted on the horn of ESR system
At the time of the second electrode being mounted on horn at the time of crystallizer mouth is left in pole with detection enters crystallizer mouth；
The electrode position detection unit is configured to detect the first electrode and second electrode being mounted on horn
Location information；
Described control unit is configured as: being received the first electric signal of molten bath electrical signal detection unit, is controlled electroslag remelting device
Electrode drive mechanism first electrode is promoted until first position with First Speed, coordination electrode driving mechanism will with second speed
First electrode is persistently promoted from first position, receives second location information, persistently promotes first electrode to the third place, control electricity
Pole driving mechanism declines second electrode up to the 4th position with third speed and continues the difference of decline first position and the second position
Distance, and coordination electrode driving mechanism with fourth speed make second electrode decline until molten bath electrical signal detection unit examine again
The electric signal for being essentially close to the first electric signal is measured,
Wherein, the first position is electric signal change dramatically moment for detecting in the molten bath electrical signal detection unit
The electrode position that the corresponding electrode position detection unit detects, the second position are the crystallizer mouth detection unit
The first electrode detected the electrode that the corresponding electrode position detection unit detects at the time of leaving crystallizer mouth
Position, the third place are the position of replaceable electrode, and the 4th position is detected by the crystallizer mouth detection unit
The obtained second electrode electrode position that the corresponding electrode position detection unit detects at the time of entering crystallizer mouth, the
One speed is less than second speed, and fourth speed is less than third speed.
6. ESR system according to claim 5, which is characterized in that the ESR system further includes electrode dress
Unit is unloaded, the electrode handling unit is configured to dismantle first electrode from horn and installs second on horn
Electrode.
7. ESR system according to claim 5, which is characterized in that the horn includes that can install the first electricity
The first support arm of pole and the second support arm that second electrode can be installed, and the first support arm and second support arm are able to carry out pivot
Turn or rotate the position so that second support arm replacement first support arm.
8. ESR system according to claim 5, which is characterized in that the molten bath electrical signal detection unit is configured
For for detecting one or more of resistance, electric current and the voltage in molten bath that disconnect melting high voltage.
9. ESR system according to claim 5, which is characterized in that the crystallizer mouth detection unit includes photoelectricity
Switch or imaging sensor.
10. ESR system according to claim 5, which is characterized in that described control unit and the control assembly
It is integrally-formed.
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| DE2121119A1 (en) * | 1971-04-29 | 1972-11-09 | Leybold-Heraeus GmbH & Co KG, 5000 Köln | Electro slag melting electrode replacement - electric sensing positioner device |
| CN102796881B (en) * | 2012-07-19 | 2013-08-14 | 浙江电渣核材有限公司 | Method of accurately controlling consumable electrode remainder in electroslag remelting |
| CN104451180A (en) * | 2013-09-14 | 2015-03-25 | 西安扩力机电科技有限公司 | Electroslag furnace consumable-electrode position detection and control system |
| CN108265179B (en) * | 2017-12-07 | 2019-12-17 | 山西太钢不锈钢股份有限公司 | Electrode blank exchange remelting method |
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