CN204997026U - Continuous casting crystallizer leptoprosopy fly leaf - Google Patents
Continuous casting crystallizer leptoprosopy fly leaf Download PDFInfo
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- CN204997026U CN204997026U CN201520711774.5U CN201520711774U CN204997026U CN 204997026 U CN204997026 U CN 204997026U CN 201520711774 U CN201520711774 U CN 201520711774U CN 204997026 U CN204997026 U CN 204997026U
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- leptoprosopy
- gripper shoe
- portable plate
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- cast mold
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Abstract
The utility model discloses a continuous casting crystallizer leptoprosopy fly leaf, the leptoprosopy fly leaf includes the cooling plate and the outer backup pad of inlayer, the cooling plate with the backup pad shape suits, and connects through the fixed pin, and two inter -plates form the cavity cavity, the backup pad lower part sets up vibration mechanism. The utility model discloses the adoption of vibrotechnique can effectively realize the steel billet and hug closely the crystallizer inner wall all the time, and this kind of high -frequency oscillation can also effectively reduce and draws the frictional force of casting the in -process moreover, increases casting blank surface smoothness to make the wearing and tearing of the narrow limit of crystallizer reduce, increase the copper life -span, reduced the removing surface rate of the sensitive steel grade casting blank of surface crack by a wide margin.
Description
Technical field
The utility model relates to metal freezing and continuous casting technical field, particularly a kind of continuous cast mold leptoprosopy portable plate.
Background technology
Crystallizer is the casting blank formation equipment in continuous casting steel machine, it is one of nucleus equipment of conticaster, its basic function utilizes cooling water indirectly to be taken away heat in molten steel by water-cooled copper plate, makes molten steel in crystallizer, form the base shell with certain thickness and some strength continuously.
Along with the constantly progress of modern continuous casting technology, steel grade of can casting constantly expands, and some high alloys, high-quality, high crack sensitivity steel grade are continuous produces in the production procedure of large iron and steel enterprise continuous casting.One of this wherein main technological progress is the development of big cross section strand continuous casting technology---the compression ratio of steel increases, and the product quality of steel improves.But the adverse effect that the increase of casting blank section brings is that strand needs to bend, align in casting machine on the one hand, the increase of strand corner crack can be brought thus, on the other hand, in casting process, under crystallizer is in the comprehensive function of mechanical stress and thermal stress always, especially at molten steel in the process of solidifying, solid-state steel billet is formed when flowing through continuous cast mold middle and lower part, change procedure meeting the reducing with overall volume of this liquid-solid conversion, thus cause steel billet can not be close to all the time with crystallizer inwall.
Chinese patent ZL02214026.3(notification number CN2547438Y, title " slab continuous-casting crystallizer narrow-strop copper plate ") provide a kind of crystallizer leptoprosopy portable plate with side chamfering, its chamfer dimesion is 6 ~ 10mm, and angle is 45 degree.This patent does not have the type of cooling pointing out side chamfering, is unfavorable for the uniformity of product cooling on a horizontal plane.The patent of CN201744629Y, discloses a kind of leptoprosopy portable plate of continuous casting combination mould, can ensure the cooling effect of the side chamfered area of leptoprosopy portable plate, avoid the crackle in strand bight.But enough do not consider molten steel in crystallization process volume reduce the problem brought, the volume of contraction the inwall of the steel billet of the bottom of crystallizer and crystallizer narrow boards can be made to occur the bad phenomenon of heat conduction occurs.
Utility model content
The purpose of this utility model is to overcome above-mentioned deficiency, and disclose a kind of molten steel that is conducive in the process of solidifying, the continuous cast mold leptoprosopy portable plate of crystallizer inwall is close to all the time by steel billet.
For solving the problems of the technologies described above, the technical scheme that the utility model adopts is as described below: a kind of continuous cast mold leptoprosopy portable plate, and described leptoprosopy portable plate comprises the coldplate of internal layer and outer field gripper shoe, and described gripper shoe bottom arranges vibrating mechanism.
The power transmission shaft that described vibrating mechanism comprises variable frequency power source, high-frequency rotating motor and is connected with gripper shoe lateral wall, described power transmission shaft is connected by the rotating shaft of eccentric wheel with described high-frequency rotating motor.
The power transmission shaft that described vibrating mechanism comprises parallel vibrators and is connected with described parallel vibrators oscillator, described power transmission shaft is connected with the lateral wall of described gripper shoe.
Described vibrating mechanism arranges piezoelectric acceleration sensor, charge amplifier and data collecting card, described data collecting card connection signal processing mechanism.
Described coldplate and described gripper shoe shape adapt, and are connected by steady pin, form hollow cavity between two plates.
Described coldplate is copper or copper alloy product, and described gripper shoe is steel plate product, and described hollow cavity arranges bosh.
Core of the present utility model is the vibrating mechanism arranged by gripper shoe bottom, the narrow face copper plate of crystallizer of conventional dead is become portable plate, this is because molten steel is change procedure meeting the reducing with overall volume of liquid-solid conversion, thus cause steel billet can not be close to all the time with crystallizer inwall, and by dither by a small margin, thus the narrow limit steel billet of copper coin to pre-profiling is made to form repeated stock power in a kind of horizontal direction rapidly, continuously.
The results showed, when the frequency of dither is higher than 60Hz, just a kind of persistent stable extrusion power can be formed to vibratory impulse body, and by the detection in production process and adjustment, this extruding force can prevent cementability bleedout on the one hand effectively, traction process can be made to a great extent not produce larger acceleration by vibration, be convenient to the stable of drawing process, on the other hand, shear action can also be played by friction effect, obtain good, smooth casting billet surface.
Meanwhile, the vibration of vibrating wheels can act on a reciprocal impulsive force to strand face.Often impact once, the surface of passive vibration just produces a shock wave, and this shock wave along the diffusion of depth direction and can be propagated.Along with vibrating wheels is constantly vibrated, shock wave also will constantly produce and continue diffusion.The particle of material is under the effect of shock wave, motion state is become from static original state, frictional force between material granule, also dynamic friction state is progressed into by initial static friction state, particle creates motion under the effect of shock wave, cause the change of intergranular initial position, and thereby produce the phenomenon of mutually filling gap.The gap formed between larger particles filled by less particle, this creates the terminal a kind of firm effect, in the process that molten steel crystal solidifies, by vibrating the internal friction can effectively eliminated between crystalline solid, and the cohesive force overcome between crystalline particle and cohesive force, granule effectively can be filled in large particle, thus form comparatively firm blank surface.
Vibrating mechanism arranges piezoelectric acceleration sensor, charge amplifier and data collecting card, data collecting card connection signal processing mechanism, vibration signal can detect via piezoelectric acceleration sensor, deliver to charge amplifier, then by high-speed data acquisition card, the analog signal detected is converted to data signal and sends computer to, the handling procedure of signal processing mechanism can process and display the signal collected, thus realizes the detection of high-frequency vibration signal.By detecting vibration signal, the corresponding relation of vibration signal and casting billet surface solidness can be found out on the one hand by contrast test, on the other hand, should consider to vibrate the acceleration action stretched to strand continuous casting, signal processing mechanism needs to be connected with the carry-over pinch rolls motor stretched to strand, find out the corresponding relation of vibration signal and Casting speed, by the collaborative impact of each factor, find best amplitude and optimal frequency.
What the continuous cast mold narrow panels that the utility model designs adopted is composite plate structure, be made up of the coldplate of internal layer and outer field gripper shoe, described coldplate and described gripper shoe shape adapt, and are connected by steady pin, form hollow cavity between two plates, this is mainly owing to processing cooled copper with steel plate, can improve the force-bearing situation of copper coin, make copper coin not yielding, the integrated gripper shoe of steel plate ratio of rigidity wants large, and weight comparatively warp, there is superiority; Adopt hollow cavate to be designed to cooling water cavity, comprise bosh, the contact surface of cooling water and copper coin can be increased, make cooling effect better.
The employing of the utility model narrow boards activity technology, effectively can realize steel billet and be close to crystallizer inwall all the time, and this higher-order of oscillation effectively can also reduce the frictional force in cast process, increase casting billet surface smoothness, thus mould at narrow wearing and tearing are reduced, increase the copper coin life-span, significantly decrease the removing surface rate of the responsive steel grade strand of face crack.
Accompanying drawing explanation
Fig. 1 is the side-looking structural representation in the utility model composite plate face.
Fig. 2 is the plan structure schematic diagram in the utility model composite plate face.
Fig. 3 is the utility model vibration signal sampling analysis electrical block diagram.
Detailed description of the invention
Embodiment one
As shown in Figure 1 to Figure 3, a kind of continuous cast mold leptoprosopy portable plate, leptoprosopy portable plate comprises coldplate 1 and the outer field gripper shoe 2 of internal layer, and coldplate 1 and gripper shoe 2 shape adapt, and are connected by steady pin 3, form hollow cavity 4 between two plates; Gripper shoe bottom arranges vibrating mechanism 5; The power transmission shaft 6 that vibrating mechanism comprises variable frequency power source, high-frequency rotating motor and is connected with gripper shoe lateral wall, power transmission shaft is connected by the rotating shaft of eccentric wheel with high-frequency rotating motor; Vibrating mechanism arranges piezoelectric acceleration sensor, charge amplifier and data collecting card, data collecting card connection signal processing mechanism; Coldplate is copper or copper alloy product, and gripper shoe is steel plate product, and hollow cavity arranges bosh.
What the vibrating mechanism in this programme adopted is dither, this relies on variable frequency power source electric machine frequency is modulated into High Rotation Speed and is with movable eccentric wheel to move in a circle, thus produce vibration, and by power transmission shaft, gripper shoe is passed in vibration, and then pass to whole composite plate, the highest excited frequency of dither is 180Hz/s, exciting force is 12KN to the maximum, amplitude is 2.5mm to the maximum, greatest irradiation scope is 1.5m, frequently high owing to shaking, amplitude is little, the little energy that vibration deformation face consumes, exciting force is strong, without losing phenomenon of shaking, compact conformation, easy to use, few easy workout part.
In the specific implementation, ZKF type dither can be adopted, volume is little, lightweight, and rapid-mounted structure can be adopted, it is fixed only needs a fastening screw to use, than using generic outer formula vibrator to save, being installed non-cutting time 75%, saving manpower 75%, also be convenient to change and maintenance, thus decrease maintenance cost, reduce construction cost.
Core of the present utility model is the vibrating mechanism arranged by gripper shoe bottom, the narrow face copper plate of crystallizer of conventional dead is become portable plate, this is because molten steel is change procedure meeting the reducing with overall volume of liquid-solid conversion, thus cause steel billet can not be close to all the time with crystallizer inwall, and by dither by a small margin, thus the narrow limit steel billet of copper coin to pre-profiling is made to form repeated stock power in a kind of horizontal direction rapidly, continuously.
The results showed, when the frequency of dither is higher than 60Hz, just a kind of persistent stable extrusion power can be formed to vibratory impulse body, and by the detection in production process and adjustment, this extruding force can prevent cementability bleedout on the one hand effectively, traction process can be made to a great extent not produce larger acceleration by vibration, be convenient to the stable of drawing process, on the other hand, shear action can also be played by friction effect, obtain good, smooth casting billet surface.
Meanwhile, the vibration of vibrating wheels can act on a reciprocal impulsive force to strand face.Often impact once, the surface of passive vibration just produces a shock wave, and this shock wave along the diffusion of depth direction and can be propagated.Along with vibrating wheels is constantly vibrated, shock wave also will constantly produce and continue diffusion.The particle of material is under the effect of shock wave, motion state is become from static original state, frictional force between material granule, also dynamic friction state is progressed into by initial static friction state, particle creates motion under the effect of shock wave, cause the change of intergranular initial position, and thereby produce the phenomenon of mutually filling gap.The gap formed between larger particles filled by less particle, this creates the terminal a kind of firm effect, in the process that molten steel crystal solidifies, by vibrating the internal friction can effectively eliminated between crystalline solid, and the cohesive force overcome between crystalline particle and cohesive force, granule effectively can be filled in large particle, thus form comparatively firm blank surface.
Vibrating mechanism arranges piezoelectric acceleration sensor, charge amplifier and data collecting card, its concrete sampling analysis electrical block diagram as shown in Figure 3, data collecting card connection signal processing mechanism, vibration signal can detect via piezoelectric acceleration sensor, deliver to charge amplifier, then by high-speed data acquisition card, the analog signal detected is converted to data signal and sends computer to, the handling procedure of signal processing mechanism can process and display the signal collected, thus realizes the detection of high-frequency vibration signal.By detecting vibration signal, the corresponding relation of vibration signal and casting billet surface solidness can be found out on the one hand by contrast test, on the other hand, should consider to vibrate the acceleration action stretched to strand continuous casting, signal processing mechanism needs to be connected with the carry-over pinch rolls motor stretched to strand, find out the corresponding relation of vibration signal and Casting speed, by the collaborative impact of each factor, find best amplitude and optimal frequency.
Piezoelectric acceleration sensor can adopt LC0158T type, and its sensitivity is 30.0mV/g, and range is 166g, and resolution ratio is 0.0007g, and frequency range is 1 ~ 15000Hz(± 10%), resonant frequency is 46KHz, and driving voltage is 18 ~ 30Vdc; Charge voltage filter integration amplifier is a high-gain charge amplifying circuit with profound and negative feedbck, input charge signal is become the voltage signal be directly proportional with it by it, BZ2105-4 type can be selected, important technological parameters is as follows: electric charge input range: 0.1pC ~ 50000pC, input voltage range: 0.1Vp ~ 5Vp, voltage output range :-5V ~ 5V.Charge gain: 0.001,0.01,0.1,1,10 5 grade, voltage gain: 1,10,102,103,104 5 grades.Selected high-speed collection card important technological parameters is as follows, resolution ratio: 12,4 passages, continuous real-time Transmission 32Mbytes/s, triggers sample rate 20MS/s/CH, hardware FIFO:256M, input range :-5V ~ 5V, coffret USB2.0 high speed shielding line, can select FCFR-USB9825B-20 type.
The sampling process of vibration signal, comprises the suitable A/D that is in harmonious proportion of signal and changes two processes.The factor affecting vibration signals collecting precision comprises acquisition mode, sample frequency, quantified precision three factors.Sample mode is different, and the precision of collection signal is different, and sample frequency is then limited by signal highest frequency, and quantified precision then depends on the figure place that A/D changes, and general employing 12, part system adopts 16 even 24.Sampling thheorem helps to determine rational sampling interval △ t and rational sampling length T, and ensure that the data signal of sampling gained can represent original continuous signal x (t) truly, therefore the selection of sample frequency must meet sampling thheorem requirement.FCFR-USB9825 capture card resolution ratio is 12, provides 4 acquisition channels, and provide 2 kinds of trigger sources to comprise external trigger and software triggering, 4 kinds of drainage patterns comprise continuous acquisition, rear triggering collection, Time-delayed trigger collection, continuous trigger collection.The user class function interface driving file to provide bsp driver storehouse encapsulates dynamic base used, the input magazine of driver function interface and function call header file.Dynamic library file provides a series of simple function, helps user to complete setting and reading operation, realizes Real-time Collection and process in real time.
What the continuous cast mold narrow panels that the utility model designs adopted is composite plate structure, be made up of the coldplate of internal layer and outer field gripper shoe, described coldplate and described gripper shoe shape adapt, and are connected by steady pin, form hollow cavity between two plates, this is mainly owing to processing cooled copper with steel plate, can improve the force-bearing situation of copper coin, make copper coin not yielding, the integrated gripper shoe of steel plate ratio of rigidity wants large, and weight comparatively warp, there is superiority; Adopt hollow cavate to be designed to cooling water cavity, comprise bosh, the contact surface of cooling water and copper coin can be increased, make cooling effect better.
Embodiment two
A kind of continuous cast mold leptoprosopy portable plate, leptoprosopy portable plate comprises double-decker, and be made up of the coldplate of internal layer and outer field gripper shoe, coldplate and gripper shoe shape adapt, and are connected by steady pin, form hollow cavity between two plates; Gripper shoe bottom arranges vibrating mechanism; The power transmission shaft that vibrating mechanism comprises parallel vibrators and is connected with parallel vibrators oscillator, power transmission shaft is connected with the lateral wall of gripper shoe; Vibrating mechanism arranges piezoelectric acceleration sensor, charge amplifier and data collecting card, data collecting card connection signal processing mechanism; Coldplate is copper or copper alloy product, and gripper shoe is steel plate product, and hollow cavity arranges bosh.
Core of the present utility model is the vibrating mechanism arranged by gripper shoe bottom, the narrow face copper plate of crystallizer of conventional dead is become portable plate, this is because molten steel is change procedure meeting the reducing with overall volume of liquid-solid conversion, thus cause steel billet can not be close to all the time with crystallizer inwall, and by dither by a small margin, thus the narrow limit steel billet of copper coin to pre-profiling is made to form repeated stock power in a kind of horizontal direction rapidly, continuously.
The results showed, when the frequency of dither is higher than 60Hz, just a kind of persistent stable extrusion power can be formed to vibratory impulse body, and by the detection in production process and adjustment, this extruding force can prevent cementability bleedout on the one hand effectively, traction process can be made to a great extent not produce larger acceleration by vibration, be convenient to the stable of drawing process, on the other hand, shear action can also be played by friction effect, obtain good, smooth casting billet surface.
Meanwhile, the vibration of vibrating wheels can act on a reciprocal impulsive force to strand face.Often impact once, the surface of passive vibration just produces a shock wave, and this shock wave along the diffusion of depth direction and can be propagated.Along with vibrating wheels is constantly vibrated, shock wave also will constantly produce and continue diffusion.The particle of material is under the effect of shock wave, motion state is become from static original state, frictional force between material granule, also dynamic friction state is progressed into by initial static friction state, particle creates motion under the effect of shock wave, cause the change of intergranular initial position, and thereby produce the phenomenon of mutually filling gap.The gap formed between larger particles filled by less particle, this creates the terminal a kind of firm effect, in the process that molten steel crystal solidifies, by vibrating the internal friction can effectively eliminated between crystalline solid, and the cohesive force overcome between crystalline particle and cohesive force, granule effectively can be filled in large particle, thus form comparatively firm blank surface.
Be with the difference of embodiment one: what the vibrating mechanism of this programme adopted is parallel vibrators, the power transmission shaft that vibrating mechanism comprises parallel vibrators and is connected with parallel vibrators oscillator, power transmission shaft is connected with the lateral wall of gripper shoe, the major advantage of plate vibrator is to consider that bearing bears axial force, during use, motor should be the level of state, the horizontal component automatic moving of the inertia force utilizing motor oscillator to produce, only controls the direction of movement during operation; Meanwhile, vibrating mechanism, when fixing use, need check whether crack and loosening phenomenon in time, and repairs in time it or again fastening, and vibrating mechanism can on the snubber base with buffer spring, and spring body just has good damping property.
What finally illustrate is, above embodiment is only in order to illustrate the technical solution of the utility model and unrestricted, other amendments that those skilled in the art make the technical solution of the utility model or equivalently to replace, only otherwise depart from the spirit and scope of technical solutions of the utility model, all should be encompassed in the middle of right of the present utility model.
Claims (6)
1. a continuous cast mold leptoprosopy portable plate, is characterized in that: described leptoprosopy portable plate comprises the coldplate of internal layer and outer field gripper shoe, and described gripper shoe bottom arranges vibrating mechanism.
2. continuous cast mold leptoprosopy portable plate as claimed in claim 1, it is characterized in that: the power transmission shaft that described vibrating mechanism comprises variable frequency power source, high-frequency rotating motor and is connected with gripper shoe lateral wall, described power transmission shaft is connected by the rotating shaft of eccentric wheel with described high-frequency rotating motor.
3. continuous cast mold leptoprosopy portable plate as claimed in claim 1, it is characterized in that: the power transmission shaft that described vibrating mechanism comprises parallel vibrators and is connected with described parallel vibrators oscillator, described power transmission shaft is connected with the lateral wall of described gripper shoe.
4. continuous cast mold leptoprosopy portable plate as claimed in claim 2 or claim 3, is characterized in that: described vibrating mechanism arranges piezoelectric acceleration sensor, charge amplifier and data collecting card, described data collecting card connection signal processing mechanism.
5. continuous cast mold leptoprosopy portable plate as claimed in claim 4, is characterized in that: described coldplate and described gripper shoe shape adapt, and are connected by steady pin, form hollow cavity between two plates.
6. continuous cast mold leptoprosopy portable plate as claimed in claim 5, is characterized in that: described coldplate is copper or copper alloy product, and described gripper shoe is steel plate product, and described hollow cavity arranges bosh.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520711774.5U CN204997026U (en) | 2015-09-15 | 2015-09-15 | Continuous casting crystallizer leptoprosopy fly leaf |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520711774.5U CN204997026U (en) | 2015-09-15 | 2015-09-15 | Continuous casting crystallizer leptoprosopy fly leaf |
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| Publication Number | Publication Date |
|---|---|
| CN204997026U true CN204997026U (en) | 2016-01-27 |
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|---|---|---|---|
| CN201520711774.5U Active CN204997026U (en) | 2015-09-15 | 2015-09-15 | Continuous casting crystallizer leptoprosopy fly leaf |
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