CN110355340B - Intelligent system for controlling crystallizer thermal width adjustment soft clamping force and application method thereof - Google Patents
Intelligent system for controlling crystallizer thermal width adjustment soft clamping force and application method thereof Download PDFInfo
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- CN110355340B CN110355340B CN201910747720.7A CN201910747720A CN110355340B CN 110355340 B CN110355340 B CN 110355340B CN 201910747720 A CN201910747720 A CN 201910747720A CN 110355340 B CN110355340 B CN 110355340B
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- 238000000034 method Methods 0.000 title claims abstract description 40
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 109
- 229910052802 copper Inorganic materials 0.000 claims description 109
- 239000010949 copper Substances 0.000 claims description 109
- 229910000831 Steel Inorganic materials 0.000 claims description 33
- 239000010959 steel Substances 0.000 claims description 33
- 238000004519 manufacturing process Methods 0.000 claims description 25
- 238000001514 detection method Methods 0.000 claims description 22
- 238000005266 casting Methods 0.000 claims description 20
- 238000004364 calculation method Methods 0.000 claims description 18
- 238000005299 abrasion Methods 0.000 claims description 10
- 230000002706 hydrostatic effect Effects 0.000 claims description 9
- 230000006835 compression Effects 0.000 claims description 3
- 238000007906 compression Methods 0.000 claims description 3
- 238000009749 continuous casting Methods 0.000 abstract description 9
- 230000001276 controlling effect Effects 0.000 description 10
- 230000008901 benefit Effects 0.000 description 5
- 238000012423 maintenance Methods 0.000 description 5
- 238000010586 diagram Methods 0.000 description 4
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 230000001105 regulatory effect Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D11/00—Continuous casting of metals, i.e. casting in indefinite lengths
- B22D11/04—Continuous casting of metals, i.e. casting in indefinite lengths into open-ended moulds
- B22D11/05—Continuous casting of metals, i.e. casting in indefinite lengths into open-ended moulds into moulds having adjustable walls
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D11/00—Continuous casting of metals, i.e. casting in indefinite lengths
- B22D11/16—Controlling or regulating processes or operations
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Abstract
The invention relates to the field of metallurgical continuous casting equipment, in particular to an intelligent system for controlling the hot width adjustment soft clamping force of a crystallizer and a use method thereof.
Description
Technical Field
The invention relates to the field of metallurgical continuous casting equipment, in particular to an intelligent system for controlling a crystallizer to thermally widen and soft clamping force and a using method thereof.
Background
In the heat width adjusting production process of the slab caster crystallizer, the thickness of the wide copper plate is reduced along with the abrasion of the wide copper plate in the steel casting process, and the pre-soft clamping force of the disc spring of the crystallizer clamping device is reduced along with the abrasion. Aiming at a slab crystallizer with heat width adjustment, in order to facilitate the stability and reliability of pressure control of a hydraulic release oil cylinder, the design base number of the pre-soft clamping force is relatively large, and the pre-soft clamping force is reduced due to copper plate abrasion and does not influence normal steel casting of the crystallizer with non-heat width adjustment; however, in the hot adjustment process, the soft clamping force is only about 1.2-1.3 times of the hydrostatic pressure of the molten steel, if the crystallizer is subjected to hot adjustment according to the soft clamping force parameters originally set and the constant pressure control model of the oil cylinder is released after the copper plate is worn, the soft clamping force in the hot adjustment process can be reduced, even the soft clamping force in the hot adjustment process is smaller than the hydrostatic pressure of the molten steel, and the like, and the large accident risks such as steel leakage and the like can occur in the hot adjustment steel casting process.
At home and abroad, after the wide copper plate of the heat width-adjusting crystallizer is worn, iron and steel enterprises all require the crystallizer to be disassembled from the offline to the maintenance area, the pre-soft clamping force of the disc spring is calibrated again according to the drawing design requirement of the crystallizer clamping device, so that the time and labor are consumed, the continuity and the production efficiency of the whole continuous casting production are influenced, and the economic benefit of the enterprises is seriously reduced.
Disclosure of Invention
The intelligent system for controlling the crystallizer heat adjustment width soft clamping force and the application method thereof provided by the invention overcome the defects of the prior art, and have the advantages of ensuring the online real-time updating of the thickness change of the wide copper plate relative to the release oil cylinder pressure of the novel crystallizer clamping device, ensuring the soft clamping force stability in the crystallizer heat adjustment process, and finally ensuring the safety and reliability in the crystallizer heat adjustment production process.
The technical problems solved by the invention can be realized by adopting the following technical scheme:
an intelligent system for controlling the hot width adjustment and soft clamping force of a crystallizer comprises
A crystallizer side frame;
a side frame fixing plate connected to the side frame of the mold;
an inner arc frame of the crystallizer;
The crystallizer inner arc frame and the crystallizer outer arc frame are oppositely arranged, and both sides of the crystallizer inner arc frame and the crystallizer outer arc frame are connected with crystallizer side frames;
the crystallizer clamping and loosening device is connected to the side frame fixing plate;
the inner arc copper plate of the crystallizer is arranged on the inner arc frame of the crystallizer;
The crystallizer outer arc copper plate is arranged on the crystallizer outer arc frame;
The infrared detection device is arranged at the opposite position below the inner arc frame and the outer arc frame of the crystallizer, and the inner arc frame and the outer arc frame of the crystallizer are both provided with the infrared detection device;
The crystallizer release oil cylinder valve table is connected with the crystallizer clamping and loosening device through a pipeline;
The crystallizer soft clamping force operation module is connected with the infrared detection device through a signal cable;
The crystallizer soft clamping force PLC control module is connected with the crystallizer soft clamping force operation module through an electric signal, and the crystallizer soft clamping force PLC control module is connected with the crystallizer release oil cylinder valve table through a cable.
The crystallizer clamping and loosening device comprises
Releasing the oil cylinder;
the disc spring sleeve is detachably connected with one end of the cylinder body of the release cylinder, and one side of the disc spring sleeve is fixedly connected to the inner arc frame of the crystallizer;
the disc spring is arranged in the disc spring sleeve;
One end of the guide rod is detachably connected with the disc spring, and the other end of the guide rod is connected with the side frame fixing plate;
The other end of the release oil cylinder is connected with a crystallizer release oil cylinder valve table through a pipeline.
The crystallizer clamping and loosening devices are four, the four crystallizer clamping and loosening devices are connected to the inner arc frame of the crystallizer, two crystallizer clamping and loosening devices are arranged on the upper side of the inner arc frame of the crystallizer, and two crystallizer clamping and loosening devices are arranged on the lower side of the inner arc frame of the crystallizer.
The crystallizer soft clamping force operation module is a computer internal operation calculation module.
The infrared detection device is an infrared detector.
The crystallizer soft clamping force PLC control module is a crystallizer soft clamping force PLC controller.
The application method of the intelligent system for controlling the crystallizer heat-width-adjustable soft clamping force comprises the steps of
Step one: in the online steel casting production process of the crystallizer, the inner arc copper plate of the wide-face crystallizer and the outer arc copper plate of the crystallizer are worn, the thickness of the copper plate is thinned, at the moment, the infrared detection devices connected with the inner arc frame of the crystallizer and the outer arc frame of the crystallizer automatically detect, and the detected signals transmit the real-time thickness sizes of the inner arc copper plate of the crystallizer and the outer arc copper plate of the crystallizer to the soft clamping force operation module of the crystallizer through signal cables to calculate the release pressure of the release oil cylinder;
Step two: on the basis of the first step, transmitting the release pressure value signal calculated in the first step to a crystallizer soft clamping force PLC control module, wherein the crystallizer soft clamping force PLC control module controls the valve opening degree on a crystallizer release oil cylinder valve table, and the crystallizer release oil cylinder valve table controls and adjusts the hydraulic pressure of a release oil cylinder in a crystallizer clamping and loosening device through the change of the valve opening degree, so that the pre-soft clamping force of the crystallizer clamping and loosening device is adjusted;
Step three: on the basis of the second step, when the hydraulic pressure of the release cylinder changes, the release cylinder releases the pressure, and the guide rod is directly connected to the side frame of the crystallizer through the side frame fixing plate, and the side frame of the crystallizer is fixed, so that the reaction force of the release cylinder acts on the disc spring sleeve, the force is transmitted to the disc spring, and the inner arc copper plate of the crystallizer is fixed on the inner arc frame of the crystallizer because the disc spring sleeve is fixed on the inner arc frame of the crystallizer, so that the inner arc frame of the crystallizer drives the inner arc copper plate of the crystallizer to have a trend of being far away from the outer arc copper plate of the crystallizer, and the fine adjustment of the heat adjustment process is achieved.
The calculation method of the crystallizer soft clamping force operation module in the first step is as follows:
step one: the initial pre-soft clamping force of the crystallizer clamping and loosening device is set to be F, the thicknesses of the inner arc copper plate and the outer arc copper plate of the new crystallizer are D, in the working process of the crystallizer, the infrared detection device detects the actual thickness dimensions of the inner arc copper plate and the outer arc copper plate of the wide crystallizer after being used, and the detected actual thicknesses of the inner arc copper plate and the outer arc copper plate of the wide crystallizer are D 1 and D 2 respectively;
Step two: on the basis of the first step, the detected actual thicknesses of the inner arc copper plate and the detected actual thicknesses of the outer arc copper plate of the wide crystallizer are respectively D 1 and D 2, and the detected actual thicknesses are transmitted to a soft clamping force operation module of the crystallizer to calculate the real-time pre-soft clamping force F 1 of a crystallizer clamping and loosening device after the inner arc copper plate and the outer arc copper plate of the crystallizer are worn;
Step three: on the basis of the second step, as the hydrostatic pressures of the upper crystallizer clamping and loosening devices and the lower crystallizer clamping and loosening devices are different, the structural parameters of the release oil cylinders in the upper crystallizer clamping and loosening devices and the lower crystallizer clamping and loosening devices are known, the pressure of the release oil cylinders in the upper crystallizer clamping and loosening devices is calculated to be P Upper part , the pressure of the release oil cylinders in the lower crystallizer clamping and loosening devices is calculated to be P Lower part(s) , the soft clamping force of the upper crystallizer clamping and loosening devices after adjustment is F Upper part 0, and the soft clamping force of the upper crystallizer clamping and loosening devices is F Lower part(s) 0;
Step four: according to the values in the steps one to three, the calculation equation formulas are respectively the following formulas (1) (2) (3) (4) (5) (6) and (7):
F Upper part 0＝K×F Upper part (2)
F Lower part(s) 0＝K×F Lower part(s) (3)
f Upper part ＝F1-F Upper part 0 (4)
f Lower part(s) ＝F1-F Lower part(s) 0 (5)
the parameters in the equation formula are expressed as follows:
D, the thickness of the new wide-face copper plate is mm;
f, the initial pre-soft clamping force of the four crystallizer clamping and loosening devices is the same as that of the four crystallizer clamping and loosening devices during design, and N is the same as that of the four crystallizer clamping and loosening devices;
D 1, after the outer arc copper plate is used for a period of time, detecting the thickness in mm on line;
D 2, after the inner arc copper plate is used for a period of time, detecting the thickness in mm on line;
F 1, real-time pre-soft clamping force and N of each crystallizer clamping and loosening device after abrasion of wide copper plate
Clamping and releasing the cylinder diameter of the plunger cylinder, m;
delta, original compression amount of the crystallizer clamping and loosening device under the initial pre-soft clamping force F, mm;
F Upper part 0, soft clamping force of each upper crystallizer clamping and loosening device and N in the normal steel casting process;
f Lower part(s) 0, soft clamping force of each lower crystallizer clamping and loosening device and N in the normal steel casting process;
F Upper part , ferrostatic pressure N applied to each upper crystallizer clamping and loosening device in the normal steel casting process;
F Lower part(s) , ferrostatic pressure N applied to each lower crystallizer clamping and loosening device in the normal steel casting process;
f Upper part , after the wide copper plate is worn, releasing force of the cylinder is released by each upper crystallizer clamping and releasing device, and N;
f Lower part(s) , after the wide copper plate is worn, releasing force of a release cylinder of each lower crystallizer clamping and releasing device, N;
K, the effective coefficient of the hydrostatic pressure of the molten steel is generally 1.2-13;
P Upper part , the release pressure of each upper release cylinder, pa;
p Lower part(s) , the release pressure of each lower release cylinder, pa.
The beneficial effects of the invention are as follows:
Compared with the prior art, the invention has the advantages that in the online steel casting production process of the crystallizer, the inner arc copper plate of the wide-face crystallizer and the outer arc copper plate of the crystallizer are worn to reduce the thickness, at the moment, the infrared detection devices connected with the inner arc frame of the crystallizer and the outer arc frame of the crystallizer automatically detect, the detected signals are transmitted to the soft clamping force operation module of the crystallizer for calculating the release pressure of the release oil cylinder through the real-time thickness dimension of the inner arc copper plate of the crystallizer and the outer arc copper plate of the crystallizer by the signal cable, the calculated release pressure value signals are transmitted to the soft clamping force PLC control module of the crystallizer, the soft clamping force PLC control module of the crystallizer controls the valve opening degree on the valve table of the release oil cylinder of the crystallizer, the valve table of the release oil cylinder is controlled and regulated through the change of the valve opening degree, therefore, the pre-soft clamping force of the crystallizer clamping and loosening device is regulated, when the hydraulic pressure of the release oil cylinder changes, the release cylinder can release the pressure, as the guide rod is directly connected to the side frame of the crystallizer through the side frame fixing plate and the side frame of the crystallizer is fixed, the reaction force of the release oil cylinder acts on the disc spring sleeve, so that the force can be transferred to the disc spring, and as the disc spring sleeve is fixed on the inner arc frame of the crystallizer, the inner arc copper plate of the crystallizer is fixed on the inner arc frame of the crystallizer, the inner arc frame of the crystallizer drives the inner arc copper plate of the crystallizer to have a trend of being far away from the outer arc copper plate of the crystallizer, thereby achieving the fine adjustment of the hot adjustment process, meeting the consistency and stability of the soft clamping force of the hot adjustment process, avoiding the soft clamping force caused by the abrasion of the copper plate in the hot adjustment process, and the accidents of steel leakage and the like in the production process, meanwhile, the labor capacity of maintenance area workers for repeatedly calibrating the crystallizer clamping device is reduced, time and labor are saved, and the continuity and the production efficiency of continuous casting production are improved.
Drawings
The invention will be further described with reference to the drawings and examples.
FIG. 1 is a schematic diagram of the rotating surface structure of an intelligent device A-A for thermally widening soft clamping force of a crystallizer.
FIG. 2 is a schematic diagram of the B-B surface structure of the intelligent device for thermally widening the soft clamping force of the crystallizer.
FIG. 3 is a schematic diagram of the whole structure of the intelligent device for controlling the heat width adjustment soft clamping force of the crystallizer.
FIG. 4 is a schematic diagram of the intelligent device system for controlling the crystallizer thermal broadening soft clamping force according to the present invention.
In the figure: 1-crystallizer inner arc frame, 2-crystallizer outer arc frame, 3-crystallizer side frame, 4-crystallizer inner arc copper plate, 5-crystallizer outer arc copper plate, 6-side frame fixing plate, 7-disc spring, 8-disc spring sleeve, 9-release oil cylinder, 10-infrared detection device and 11-guide rod.
Detailed Description
Example 1:
referring to FIGS. 1,2, 3 and 4, an intelligent system for controlling a mold hot-width soft clamping force comprises
A mold side frame 3;
a side frame fixing plate 6, the side frame fixing plate 6 being connected to the side frame 3 of the mold;
A crystallizer inner arc frame 1;
The crystallizer comprises a crystallizer outer arc frame 2, wherein a crystallizer inner arc frame 1 and the crystallizer outer arc frame 2 are oppositely arranged, and both sides of the crystallizer inner arc frame 1 and the crystallizer outer arc frame 2 are connected with a crystallizer side frame 3;
the crystallizer clamping and loosening device is connected to the side frame fixing plate 6;
the inner arc copper plate 4 of the crystallizer is arranged on the inner arc frame 1 of the crystallizer;
the crystallizer outer arc copper plate 5 is arranged on the crystallizer outer arc frame 2;
the infrared detection device 10 is arranged at the opposite position below the inner arc frame 1 and the outer arc frame 2 of the crystallizer, and the inner arc frame 1 and the outer arc frame 2 of the crystallizer are both provided with the infrared detection device 10;
The crystallizer release oil cylinder valve table is connected with the crystallizer clamping and loosening device through a pipeline;
The crystallizer soft clamping force operation module is connected with the infrared detection device 10 through a signal cable;
The crystallizer soft clamping force PLC control module is connected with the crystallizer soft clamping force operation module through an electric signal, and the crystallizer soft clamping force PLC control module is connected with the crystallizer release oil cylinder valve table through a cable.
When in actual use, the method comprises the following steps: in the online steel casting production process of the crystallizer, the inner arc copper plate 4 and the outer arc copper plate 5 of the wide-face crystallizer are worn, so that the thickness of the inner arc copper plate is thinned, at the moment, the infrared detection devices 10 connected with the inner arc frame 1 and the outer arc frame 2 of the crystallizer automatically detect, and the detected signals are transmitted to a soft clamping force operation module of the crystallizer through a signal cable to calculate the release pressure of the release oil cylinder 9; the calculated release pressure value signal is transmitted to a crystallizer soft clamping force PLC control module, the crystallizer soft clamping force PLC control module controls the valve opening degree on a crystallizer release oil cylinder valve table, and the crystallizer release oil cylinder valve table controls and adjusts the hydraulic pressure of a release oil cylinder 9 in a crystallizer clamping and loosening device through the change of the valve opening degree, so that the pre-soft clamping force of the crystallizer clamping and loosening device is adjusted; the system meets the consistency and stability of the soft clamping force of the heat width adjustment, avoids the occurrence of accidents such as small soft clamping force caused by copper plate abrasion in the heat width adjustment process, steel leakage in the production process and the like, reduces the labor amount of repeated calibration of a crystallizer clamping device by workers in a maintenance area, saves time and labor, and improves the continuity and production efficiency of continuous casting production.
Example 2:
Referring to fig. 1 and 2, the present embodiment is different from embodiment 1 in that: the crystallizer clamping and loosening device comprises
Releasing the oil cylinder 9;
The disc spring sleeve 8 is detachably connected with one end of a cylinder body of the release cylinder 9, and one side of the disc spring sleeve 8 is fixedly connected to the inner arc frame 1 of the crystallizer;
A disc spring 7, the disc spring 7 being arranged in the disc spring sleeve 8;
The guide rod 11, one end of the guide rod 11 is detachably connected with the disc spring 7, and the other end of the guide rod 11 is connected with the side frame fixing plate 6;
the other end of the release oil cylinder 9 is connected with a crystallizer release oil cylinder valve table through a pipeline.
When in actual use, the method comprises the following steps: when the hydraulic pressure of the release cylinder 9 changes, the release cylinder 9 releases the pressure, and the guide rod 11 is directly connected to the side frame 3 of the crystallizer through the side frame fixing plate 6, and the side frame 3 of the crystallizer is fixed, so that the reaction force of the release cylinder 9 acts on the disc spring sleeve 8, and the force is transferred to the disc spring 7, and further, because the disc spring sleeve 8 is fixed on the inner arc frame 1 of the crystallizer, the inner arc copper plate 4 of the crystallizer is fixed on the inner arc frame 1 of the crystallizer, so that the inner arc frame 1 of the crystallizer drives the inner arc copper plate 4 of the crystallizer to have a trend of being far away from the outer arc copper plate 5 of the crystallizer, thereby achieving the fine adjustment of the hot adjustment process, meeting the consistency and stability of the soft clamping force of the hot adjustment process, avoiding the soft clamping force caused by abrasion of the copper plate in the hot adjustment process, and avoiding the accidents such as steel leakage and the like in the production process.
Example 3:
compared with embodiment 2, this embodiment is different in that: the crystallizer clamping and loosening devices are four, the four crystallizer clamping and loosening devices are connected to the inner arc frame 1 of the crystallizer, two crystallizer clamping and loosening devices are arranged on the upper side of the inner arc frame 1 of the crystallizer, and two crystallizer clamping and loosening devices are arranged on the lower side of the inner arc frame 1 of the crystallizer.
When in actual use, the method comprises the following steps: two crystallizer inner arc frames 1 are arranged on the upper side, two crystallizer clamping and loosening devices are arranged on the lower side, meanwhile, the crystallizer inner arc frames 1 are driven to drive the crystallizer inner arc copper plates 4 to have a trend of being far away from the crystallizer outer arc copper plates 5, and fine adjustment in a heat adjustment process is achieved, and the fine adjustment effect is optimal.
Example 4:
compared with embodiment 1, this embodiment is different in that: the crystallizer soft clamping force operation module is a computer internal operation calculation module.
Preferably, the infrared detection device 10 is an infrared detector.
Preferably, the crystallizer soft clamping force PLC control module is a crystallizer soft clamping force PLC controller.
When in actual use, the method comprises the following steps: the calculation module of the soft clamping force of the crystallizer is a calculation module running in a computer, is an existing calculation module which is developed by oneself and is installed in the computer for use, the calculation module program belongs to the prior art, a specific calculation method is specifically described in the following embodiments, wherein as long as the calculation module program can realize the calculation method in the invention, the program of the calculation method can be applied to the invention, the infrared detection device 10 is an infrared detector, the infrared detector is the prior art, as long as the infrared detector which can realize the invention for detecting the thickness of the copper plate is applied to the invention, the soft clamping force PLC control module of the crystallizer is a soft clamping force PLC controller of the crystallizer, the soft clamping force PLC controller of the crystallizer belongs to the prior art, and as long as the existing PLC controller can realize the function of the soft clamping force PLC controller of the crystallizer in the invention is applied to the invention.
Example 5:
the method for using the intelligent system for controlling the crystallizer heat-regulating wide soft clamping force comprises the intelligent system for controlling the crystallizer heat-regulating wide soft clamping force, disclosed in the embodiments 1-4, comprising the following steps of
Step one: in the online steel casting production process of the crystallizer, the inner arc copper plate 4 and the outer arc copper plate 5 of the wide-face crystallizer are worn, the thickness of the copper plates is thinned, at the moment, the infrared detection devices 10 connected with the inner arc frame 1 and the outer arc frame 2 of the crystallizer automatically detect, and the detected signals are transmitted to a soft clamping force operation module of the crystallizer through a signal cable to calculate the release pressure of the release oil cylinder 9;
step two: on the basis of the first step, transmitting the release pressure value signal calculated in the first step to a crystallizer soft clamping force PLC control module, wherein the crystallizer soft clamping force PLC control module controls the valve opening degree on a crystallizer release oil cylinder valve table, and the crystallizer release oil cylinder valve table controls and adjusts the hydraulic pressure of a release oil cylinder 9 in a crystallizer clamping and loosening device through the change of the valve opening degree, so as to adjust the pre-soft clamping force of the crystallizer clamping and loosening device;
Step three: on the basis of the second step, when the hydraulic pressure of the release cylinder 9 changes, the release cylinder 9 releases the pressure, and the guide rod 11 is directly connected to the side frame 3 of the crystallizer through the side frame fixing plate 6, and the side frame 3 of the crystallizer is fixed, so that the reaction force of the release cylinder 9 acts on the disc spring sleeve 8, and the force is transferred to the disc spring 7, and further, because the disc spring sleeve 8 is fixed on the inner arc frame 1 of the crystallizer, the inner arc copper plate 4 of the crystallizer is fixed on the inner arc frame 1 of the crystallizer, and therefore, the inner arc frame 1 of the crystallizer drives the inner arc copper plate 4 of the crystallizer to have a trend of being far away from the outer arc copper plate 5 of the crystallizer, so that the fine adjustment of the heat adjustment process is achieved.
The crystallizer clamping and loosening device can automatically adjust and release the pressure of the oil cylinder by the method, so that the pre-soft clamping force of the crystallizer clamping and loosening device is adjusted, the consistency and stability of the hot width adjusting soft clamping force are met, and accidents such as small soft clamping force, steel leakage and the like caused by copper plate abrasion in the hot width adjusting process are avoided; meanwhile, the labor capacity of maintenance area workers for repeatedly calibrating the crystallizer clamping device is reduced, time and labor are saved, the continuity and production efficiency of continuous casting production are improved, and the continuity and production efficiency of the whole continuous casting production and the economic benefit of enterprises are improved.
Example 6:
Compared with embodiment 5, this embodiment is different in that: the calculation method of the crystallizer soft clamping force operation module in the first step is as follows:
Step one: the initial pre-soft clamping force of the pre-set crystallizer clamping and loosening device is F, the thicknesses of the new inner arc copper plate 4 and the new outer arc copper plate 5 of the crystallizer are D, in the working process of the crystallizer, the infrared detection device 10 detects the actual thickness dimensions of the inner arc copper plate 4 and the outer arc copper plate 5 of the wide crystallizer after being used, and the detected actual thicknesses of the inner arc copper plate 4 and the outer arc copper plate 5 of the wide crystallizer are D 1 and D 2 respectively;
Step two: on the basis of the first step, the detected actual thicknesses of the inner arc copper plate 4 and the outer arc copper plate 5 of the wide crystallizer are respectively D 1 and D 2, and the signal data are transmitted to a soft clamping force operation module of the crystallizer to calculate the real-time pre-soft clamping force F 1 of a crystallizer clamping and loosening device after the inner arc copper plate 4 and the outer arc copper plate 5 of the crystallizer are worn;
Wherein,
D, the thickness of the new wide-face copper plate is mm;
f, the initial pre-soft clamping force of the four crystallizer clamping and loosening devices is the same as that of the four crystallizer clamping and loosening devices in design, and N;
d 1, which is the thickness of the outer arc copper plate detected on line after being used for a period of time, and is mm;
D 2, which is the thickness of the inner arc copper plate detected on line after being used for a period of time, and is mm;
F 1, pre-softening the clamping force, N, of each crystallizer clamping and loosening device in real time after the wide copper plate is worn;
Delta, is the original compression amount of the crystallizer under the initial pre-soft clamping force F of the crystallizer clamping and loosening device, and mm;
Step three: on the basis of the second step, as the hydrostatic pressures of the upper crystallizer clamping and loosening devices and the lower crystallizer clamping and loosening devices are different, the structural parameters of the release oil cylinders (9) in the upper crystallizer clamping and loosening devices and the lower crystallizer clamping and loosening devices are known, the pressure of the release oil cylinders (9) in the upper crystallizer clamping and loosening devices is calculated to be P Upper part , the pressure of the release oil cylinders (9) in the lower crystallizer clamping and loosening devices is calculated to be P Lower part(s) , the soft clamping force of the upper crystallizer clamping and loosening devices after adjustment is F Upper part 0, and the soft clamping force of the upper crystallizer clamping and loosening devices is F Lower part(s) 0;
Step four: according to the values in the steps one to three, the calculation equation formulas are respectively the following formulas (2) (3) (4) (5) (6) and formula (7):
F Upper part 0＝K×F Upper part (2)
F Lower part(s) 0＝K×F Lower part(s) (3)
f Upper part ＝F1-F Upper part 0 (4)
f Lower part(s) ＝F1-F Lower part(s) 0 (5)
the parameters in the equation formula are expressed as follows:
Clamping and releasing the cylinder diameter of the plunger cylinder, m;
F Upper part 0, soft clamping force of each upper crystallizer clamping and loosening device and N in the normal steel casting process;
f Lower part(s) 0, soft clamping force of each lower crystallizer clamping and loosening device and N in the normal steel casting process;
F Upper part , ferrostatic pressure N applied to each upper crystallizer clamping and loosening device in the normal steel casting process;
F Lower part(s) , ferrostatic pressure N applied to each lower crystallizer clamping and loosening device in the normal steel casting process;
f Upper part , after the wide copper plate is worn, releasing force of the cylinder is released by each upper crystallizer clamping and releasing device, and N;
f Lower part(s) , after the wide copper plate is worn, releasing force of a release cylinder of each lower crystallizer clamping and releasing device, N;
K, the effective coefficient of the hydrostatic pressure of the molten steel is generally 1.2-13;
P Upper part , the release pressure of each upper release cylinder, pa;
p Lower part(s) , the release pressure of each lower release cylinder, pa.
The soft clamping force of the upper crystallizer clamping and loosening device after adjustment is F Upper part 0 and F Lower part(s) 0 is obtained through the calculation method, the valve opening degree of the crystallizer on a valve table of a crystallizer release oil cylinder is controlled through a PLC control module of the soft clamping force of the upper crystallizer clamping and loosening device, the hydraulic pressure of a release oil cylinder 9 in the crystallizer clamping and loosening device is adjusted through the change of the valve opening degree of the valve table of the crystallizer release oil cylinder, when the hydraulic pressure of the release oil cylinder 9 changes, the release oil cylinder 9 releases the pressure, and as a guide rod 11 is directly connected to a side frame 3 of the crystallizer through a side frame fixing plate 6, the side frame 3 of the crystallizer is fixed, the reaction force of the release oil cylinder 9 acts on a disc spring sleeve 8, therefore, the force is transmitted to the disc spring 7, and because the disc spring sleeve 8 is fixed on the inner arc frame 1 of the crystallizer, the inner arc copper plate 4 of the crystallizer is fixed on the inner arc frame 1 of the crystallizer, so that the inner arc frame 1 of the crystallizer drives the inner arc copper plate 4 of the crystallizer to have a trend of being far away from the outer arc copper plate 5 of the crystallizer, the fine adjustment of the heat adjustment process is achieved, the consistency and stability of the heat adjustment width soft clamping force are met, the soft clamping force is reduced due to the abrasion of the copper plate in the heat adjustment width process, the accidents such as steel leakage in the production process are avoided, the labor capacity of workers in a maintenance area for repeatedly calibrating the clamping device of the crystallizer is reduced, the time and labor are saved, the continuity and the production efficiency of continuous casting production are improved, and the continuity and the production efficiency of the whole continuous casting production are improved, and the economic benefits of enterprises are improved.
The embodiments of the present invention have been described in detail with reference to the drawings, but the present invention is not limited to the above embodiments, and various changes can be made within the scope of the knowledge of those skilled in the art without departing from the spirit of the present invention, which is within the scope of the present invention.
It should be noted that all directional indicators (such as up, down, left, right, front, and rear … …) in the embodiments of the present invention are merely used to explain the relative positional relationship, movement, etc. between the components in a particular posture (as shown in the drawings), and if the particular posture is changed, the directional indicator is changed accordingly.
The technical solutions between the embodiments may be combined with each other, but it is necessary to base the implementation on the basis of those skilled in the art that when the combination of technical solutions contradicts or cannot be implemented, it should be considered that the combination of technical solutions does not exist and is not within the scope of protection claimed by the present invention.
Claims (7)
1. An intelligent system using method for controlling the heat width adjustment soft clamping force of a crystallizer is characterized by comprising the following steps: comprises the following steps
Step one: in the online steel casting production process of the crystallizer, the inner arc copper plate (4) and the outer arc copper plate (5) of the wide-face crystallizer are worn, the thickness of the copper plate is thinned, at the moment, an infrared detection device (10) connected with the inner arc frame (1) and the outer arc frame (2) of the crystallizer automatically detects, and detected signals are transmitted to a soft clamping force operation module of the crystallizer for calculating the release pressure of a release oil cylinder (9) through a signal cable;
Step two: on the basis of the first step, transmitting the release pressure value signal calculated in the first step to a crystallizer soft clamping force PLC control module, wherein the crystallizer soft clamping force PLC control module controls the valve opening degree on a crystallizer release oil cylinder valve table, and the crystallizer release oil cylinder valve table controls and adjusts the hydraulic pressure of a release oil cylinder (9) in a crystallizer clamping and loosening device through the change of the valve opening degree, so as to adjust the pre-soft clamping force of the crystallizer clamping and loosening device;
Step three: on the basis of the second step, when the hydraulic pressure of the release oil cylinder (9) changes, the release oil cylinder (9) releases the pressure, and as the guide rod (11) is directly connected to the side frame (3) of the crystallizer through the side frame fixing plate (6), the side frame (3) of the crystallizer is fixed, the reaction force of the release oil cylinder (9) acts on the disc spring sleeve (8), so that the force is transmitted to the disc spring (7), and as the disc spring sleeve (8) is fixed on the inner arc frame (1) of the crystallizer, the inner arc copper plate (4) of the crystallizer is fixed on the inner arc frame (1) of the crystallizer, and the inner arc copper plate (4) of the crystallizer is driven by the inner arc frame (1) of the crystallizer to have a trend of being far away from the outer arc copper plate (5) of the crystallizer, so as to achieve fine adjustment in the heat adjustment process;
the intelligent system for controlling the crystallizer to thermally widen the soft clamping force is further included, and the system comprises:
a side frame (3) of the crystallizer;
a side frame fixing plate (6), wherein the side frame fixing plate (6) is connected to the side frame (3) of the crystallizer;
A crystallizer inner arc frame (1);
The crystallizer comprises a crystallizer outer arc frame (2), wherein the crystallizer inner arc frame (1) and the crystallizer outer arc frame (2) are oppositely arranged, and two sides of the crystallizer inner arc frame (1) and the crystallizer outer arc frame (2) are connected with crystallizer side frames (3);
the crystallizer clamping and loosening device is connected to the side frame fixing plate (6);
the inner arc copper plate (4) of the crystallizer is arranged on the inner arc frame (1) of the crystallizer;
The crystallizer outer arc copper plate (5), the crystallizer outer arc copper plate (5) is arranged on the crystallizer outer arc frame (2);
the infrared detection device (10) is arranged at the opposite position below the inner arc frame (1) and the outer arc frame (2) of the crystallizer, and the inner arc frame (1) and the outer arc frame (2) of the crystallizer are both provided with the infrared detection device (10);
The crystallizer release oil cylinder valve table is connected with the crystallizer clamping and loosening device through a pipeline;
the crystallizer soft clamping force operation module is connected with the infrared detection device (10) through a signal cable;
The crystallizer soft clamping force PLC control module is connected with the crystallizer soft clamping force operation module through an electric signal, and the crystallizer soft clamping force PLC control module is connected with the crystallizer release oil cylinder valve table through a cable.
2. The method for using the intelligent system for controlling the heat-width-adjusting soft clamping force of the crystallizer according to claim 1, wherein the intelligent system comprises the following steps: the crystallizer clamping and loosening device comprises
A release cylinder (9);
The disc spring sleeve (8), the disc spring sleeve (8) is detachably connected with one end of a cylinder body of the release cylinder (9), and one side of the disc spring sleeve (8) is fixedly connected to the inner arc frame (1) of the crystallizer;
The disc spring (7), the disc spring (7) is set up in the disc spring sleeve (8);
The guide rod (11), one end of the guide rod (11) is detachably connected with the disc spring (7), and the other end of the guide rod (11) is connected with the side frame fixing plate (6);
the other end of the release oil cylinder (9) is connected with a crystallizer release oil cylinder valve table through a pipeline.
3. The method for using the intelligent system for controlling the heat-width-adjusting soft clamping force of the crystallizer according to claim 2, wherein the intelligent system comprises the following steps: the crystallizer clamping and loosening devices are four, the four crystallizer clamping and loosening devices are connected to the inner arc frame (1) of the crystallizer, two crystallizer clamping and loosening devices are arranged on the upper side of the inner arc frame (1) of the crystallizer, and two crystallizer clamping and loosening devices are arranged on the lower side of the inner arc frame (1).
4. The method for using the intelligent system for controlling the heat-width-adjusting soft clamping force of the crystallizer according to claim 1, wherein the intelligent system comprises the following steps: the crystallizer soft clamping force operation module is a computer internal operation calculation module.
5. The method for using the intelligent system for controlling the heat-width-adjusting soft clamping force of the crystallizer according to claim 1, wherein the intelligent system comprises the following steps: the infrared detection device (10) is an infrared detector.
6. The method for using the intelligent system for controlling the heat-width-adjusting soft clamping force of the crystallizer according to claim 1, wherein the intelligent system comprises the following steps: the crystallizer soft clamping force PLC control module is a crystallizer soft clamping force PLC controller.
7. The method for using the intelligent system for controlling the heat-width-adjusting soft clamping force of the crystallizer according to claim 1, wherein the intelligent system comprises the following steps: the calculation method of the crystallizer soft clamping force operation module in the first step is as follows:
step one: the initial pre-soft clamping force of the pre-set crystallizer clamping and loosening device is that The thicknesses of the novel crystallizer inner arc copper plate (4) and the novel crystallizer outer arc copper plate (5) are respectively/>In the working process of the crystallizer, the infrared detection device (10) detects the practical thickness dimensions of the wide-face inner arc copper plate (4) and the outer arc copper plate (5) of the crystallizer after being used, and the practical thicknesses of the wide-face inner arc copper plate (4) and the outer arc copper plate (5) of the crystallizer after being detected are respectively/>And/>；
Step two: based on the first step, the detected actual thickness of the inner arc copper plate (4) of the wide-face crystallizer and the detected actual thickness of the outer arc copper plate (5) of the crystallizer are respectively as followsAnd/>The signal data are transmitted to a crystallizer soft clamping force operation module to calculate the real-time pre-soft clamping force/>, of a crystallizer clamping and loosening device after the inner arc copper plate (4) and the outer arc copper plate (5) of the crystallizer are worn out；
Step three: on the basis of the second step, as the hydrostatic pressures of the upper crystallizer clamping and loosening devices and the lower crystallizer clamping and loosening devices are different, the structural parameters of the release oil cylinders (9) in the upper crystallizer clamping and loosening devices and the lower crystallizer clamping and loosening devices are known, and the pressure of the release oil cylinders (9) in the upper crystallizer clamping and loosening devices is calculated to beAnd the pressure of the release oil cylinder (9) in the lower crystallizer clamping and releasing device is/>Adjusting the soft clamping force of the clamping and loosening device of the upper crystallizer to be/>The soft clamping force of the upper crystallizer clamping and loosening device is/>；
Step four: according to the values in the steps one to three, the calculation equation formulas are respectively the following formulas (1) (2) (3) (4) (5) (6) and (7):
(1)
(2)
(3)
(4)
(5)
(6)
(7)
the parameters in the equation formula are expressed as follows:
The thickness of the new wide-surface copper plate is mm;
The initial pre-soft clamping force of the four crystallizer clamping and loosening devices is the same as N in design;
after the outer arc copper plate is used for a period of time, the thickness of the outer arc copper plate is detected on line, and the thickness is mm;
After the inner arc copper plate is used for a period of time, the thickness of the inner arc copper plate is detected on line, and the thickness is mm;
Each crystallizer clamping and loosening device after abrasion of wide copper plate pre-softens clamping force in real time, N
Clamping and releasing the cylinder diameter of the plunger cylinder, m;
The original compression amount of the crystallizer clamping and loosening device under the initial pre-soft clamping force F is mm;
the soft clamping force of each upper crystallizer clamping and loosening device in the normal steel casting process is N;
The soft clamping force of each lower crystallizer clamping and loosening device in the normal steel casting process is N;
The hydrostatic pressure N of molten steel applied to each upper crystallizer clamping and loosening device in the normal steel casting process;
The hydrostatic pressure N of molten steel applied to each lower crystallizer clamping and loosening device in the normal steel casting process;
after the wide copper plate is worn, each upper crystallizer clamping and loosening device releases the release force of the cylinder, N;
after the wide copper plate is worn, each lower crystallizer clamping and loosening device releases the release force of the cylinder, N;
The effective coefficient of the ferrostatic pressure is generally 1.2-13;
The release pressure, pa, of each upper release cylinder;
the release pressure, pa, of each lower release cylinder.
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| DE3309885A1 (en) * | 1983-03-16 | 1984-09-20 | Licentia Patent-Verwaltungs-Gmbh, 6000 Frankfurt | DEVICE FOR DETECTING THE CHILLER WALL WEAR DURING THE MOLDING PROCESS AND USING THE SAME FOR DETERMINING THE LIFTING OF THE STRAND SHELL FROM THE CHILLER INNER WALL |
| KR200269516Y1 (en) * | 2001-12-20 | 2002-03-22 | 포항종합제철 주식회사 | Apparatus for testing the wide-operation the continuous casting mold |
| JP3864810B2 (en) * | 2002-03-01 | 2007-01-10 | Ｊｆｅスチール株式会社 | Continuous casting mold, short side mold replacement method, and slab width changing method using the same |
| CN201940565U (en) * | 2010-12-10 | 2011-08-24 | 中冶赛迪工程技术股份有限公司 | Broadside clamping device of crystallizer |
| KR101315352B1 (en) * | 2011-08-01 | 2013-10-08 | 주식회사 포스코 | Apparatus for controlling mold width |
| CN103084549B (en) * | 2013-01-16 | 2015-10-07 | 中国重型机械研究院股份公司 | A kind of Crystallizer liquid steel static pressure simulation test device |
| CN104128584A (en) * | 2014-08-14 | 2014-11-05 | 中冶南方工程技术有限公司 | Method and device for setting soft clamping force in online width adjusting process of slab continuous casting crystallizer |
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