CN114473130B - Four-corner thermal state cutting device and method for one-key continuous casting slab - Google Patents
Four-corner thermal state cutting device and method for one-key continuous casting slab Download PDFInfo
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- CN114473130B CN114473130B CN202210104987.6A CN202210104987A CN114473130B CN 114473130 B CN114473130 B CN 114473130B CN 202210104987 A CN202210104987 A CN 202210104987A CN 114473130 B CN114473130 B CN 114473130B
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- 238000005520 cutting process Methods 0.000 title claims abstract description 190
- 238000009749 continuous casting Methods 0.000 title claims abstract description 13
- 238000000034 method Methods 0.000 title claims abstract description 13
- 240000004282 Grewia occidentalis Species 0.000 title claims abstract description 10
- 238000005266 casting Methods 0.000 claims abstract description 84
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims description 85
- 239000001301 oxygen Substances 0.000 claims description 85
- 229910052760 oxygen Inorganic materials 0.000 claims description 85
- 239000007789 gas Substances 0.000 claims description 64
- 239000002737 fuel gas Substances 0.000 claims description 10
- 239000002184 metal Substances 0.000 claims description 4
- 229910000831 Steel Inorganic materials 0.000 abstract description 7
- 239000010959 steel Substances 0.000 abstract description 7
- 238000005096 rolling process Methods 0.000 abstract description 6
- 238000005097 cold rolling Methods 0.000 abstract description 5
- 230000009286 beneficial effect Effects 0.000 abstract description 2
- 238000009966 trimming Methods 0.000 abstract description 2
- 238000009826 distribution Methods 0.000 description 5
- 230000007547 defect Effects 0.000 description 2
- 238000005098 hot rolling Methods 0.000 description 2
- 239000002436 steel type Substances 0.000 description 2
- MYMOFIZGZYHOMD-UHFFFAOYSA-N Dioxygen Chemical compound O=O MYMOFIZGZYHOMD-UHFFFAOYSA-N 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 229910001882 dioxygen Inorganic materials 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K7/00—Cutting, scarfing, or desurfacing by applying flames
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K7/00—Cutting, scarfing, or desurfacing by applying flames
- B23K7/10—Auxiliary devices, e.g. for guiding or supporting the torch
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K7/00—Cutting, scarfing, or desurfacing by applying flames
- B23K7/10—Auxiliary devices, e.g. for guiding or supporting the torch
- B23K7/102—Auxiliary devices, e.g. for guiding or supporting the torch for controlling the spacial relationship between the workpieces and the gas torch
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Continuous Casting (AREA)
Abstract
The invention relates to a four-corner thermal state cutting device and method for a one-key continuous casting slab, and belongs to the technical field of continuous casting slab trimming equipment and methods in the metallurgical industry. The technical scheme of the invention is as follows: the gas cutting part is arranged on the casting blank supporting, positioning and moving part, the electric appliance automatic control part is connected with the gas cutting part, steel billets are centered and placed, the guide wheel is positioned and the opening degree is adjusted, the cutting gun is positioned and adjusted, the cutting gun flame is adjusted, and finally, a one-key cutting process is started, so that the angle cutting treatment is carried out on the steel billets of the variety steel with edge cracks generated by cold rolling before rolling. The beneficial effects of the invention are as follows: the root of edge cracks is eliminated before rolling, and the function of a chamfer crystallizer is replaced.
Description
Technical Field
The invention relates to a four-corner thermal state cutting device and method for a one-key continuous casting slab, and belongs to the technical field of continuous casting slab trimming equipment and methods in the metallurgical industry.
Background
Edge crack defects of individual steel types (such as MR and other series of steel types) of hot rolled coils after entering a cold rolling unit are always the focus subject of quality attack in the hot rolling industry, and two technical routes are basically formed through efforts of the industry for many years. One technical route is to select a chamfer crystallizer, the cross section of a finished casting blank is 8-sided, and the problem that the blank enters hot rolls rolled by hot rolling and then enters cold rolling defects can be basically solved. The disadvantage is that the chamfer crystallizer is expensive and running cost is high.
Disclosure of Invention
The invention aims to provide a four-corner thermal state cutting device and method for a one-key continuous casting slab, which can realize the chamfering treatment of a steel billet of a variety steel with edge cracks generated by cold rolling before rolling, eliminate the root of the edge cracks generated before rolling, replace the function of a chamfering crystallizer and effectively solve the problems in the prior art.
The technical scheme of the invention is as follows: the four-corner thermal state cutting device for the one-key continuous casting slab comprises a casting blank supporting, positioning and moving part, a gas cutting part and an electric appliance automatic control part, wherein the gas cutting part is arranged on the casting blank supporting, positioning and moving part, and the electric appliance automatic control part is connected with the gas cutting part;
The casting blank supporting, positioning and moving part comprises a chassis, a vertical slideway, a slide bar, a slide rail, rollers, a driving device and centering positioning guide wheels, wherein the rollers are fixed on the chassis, the driving device is suspended at the end parts of the rollers, the four centering positioning guide wheels are welded on one side of the chassis, and the central connecting lines of the four centering positioning guide wheels are parallel to the longitudinal central line of the casting blank; the two vertical slide ways are arranged on the two sides of the chassis, and the slide bar and the slide rail are arranged between the two vertical slide ways;
The gas cutting part comprises a side guide wheel, a combined adjustable side cutting gun, an adjusting device, a combined adjustable top cutting gun and an upper guide wheel, wherein the side guide wheel and the combined adjustable side cutting gun are hung on the adjusting device, the adjusting device and the combined adjustable top cutting gun are connected in series through a sliding rail, the upper guide wheel is arranged on the sliding rail, and the upper guide wheel and the side guide wheel form a gantry structure; the gas dividing bag and the oxygen dividing bag are used for connecting the first oxygen pressure reducing valve, the first gas pressure reducing valve, the second oxygen pressure reducing valve, the third oxygen pressure reducing valve, the fourth gas pressure reducing valve, the second oxygen cutting valve, the third oxygen cutting valve, the first gas cutting valve, the fourth oxygen cutting valve and the gas cutting valve in series respectively through metal hoses, and are supplied to the combined adjustable side cutting gun and the combined adjustable top cutting gun through six gas dividing pipes.
The automatic control part of the electric appliance comprises a laser range finder, an igniter, a selection switch, a one-key cutting start key, a power switch, a frequency converter, a direct current power supply, a PLC, a relay, a manual button and a potentiometer.
A one-key continuous casting slab four-corner thermal state cutting method comprises the following steps:
(1) Centering the casting blank, hanging the casting blank above the roller, and abutting a straight edge of one required to be positioned with two A, B points;
(2) The method comprises the steps of positioning guide wheels and adjusting opening degree, wherein a driving roller is operated to rotate through a remote controller, the left end head of a casting blank slowly moves into a 'gantry' formed by a side guide wheel and an upper guide wheel and is aligned with a combined adjustable side cutting gun, and the opening degree of the two side guide wheels is larger than the width of the casting blank by 1mm through an adjusting device;
(3) Positioning and adjusting the cutting gun, adjusting the combined adjustable side cutting gun and the combined adjustable top cutting gun through an adjusting device, and controlling the cutting angle and the cutting size;
(4) The flame adjustment of the cutting gun is carried out, a selection switch is arranged manually, an ignition key is started, a first fuel gas cut-off valve and a second fuel gas cut-off valve are automatically opened, two igniters respectively ignite two combined type adjustable top cutting guns and simultaneously ignite two combined type adjustable side cutting guns, the amount of fuel gas and oxygen required by each cutting gun is respectively adjusted by adjusting a manual adjusting valve of a terminal of the cutting gun, and simultaneously the pressure of the fuel gas and the oxygen is respectively set in a specified range and a range through a fuel gas pressure reducing valve and an oxygen pressure reducing valve according to the required cutting thickness;
(5) Starting a one-key cutting process, wherein a PLC (programmable logic controller) firstly sends an automatic ignition instruction, a first gas cut-off valve and a second gas cut-off valve are simultaneously powered on, two igniters are simultaneously powered on, and a PLC sends an instruction to drive a device to electrically rotate so as to drive a casting blank to move downwards; when the combined adjustable side cutting gun and the cross section of the casting blank are in the same straight line, the laser range finder transmits position data to the PLC, the PLC automatically sends a power-off instruction of the driving device, the casting blank stops moving, meanwhile, the PLC instructs the oxygen cut-off valve to be opened once power is obtained, the preheating function of the two combined adjustable side cutting guns is formally started, and the casting blank is preheated; after the preheating reaches the set time, the PLC commands the cutting oxygen cut-off valve II to be powered on, the cutting function is formally started, meanwhile, the PLC commands the driving device to be powered on, the casting blank uniformly advances at a set speed, the casting blank enters a cutting state, when the casting blank walks to the state that the gun head of the combined adjustable top cutting gun is in the same straight line with the cross section of the head of the casting blank, the laser range finder transmits position data to the PLC, the PLC commands the cutting oxygen cut-off valve II to be powered off, the cutting function is stopped, the PLC commands the cutting oxygen cut-off valve II to be powered off, the PLC commands the oxygen cut-off valve II and the oxygen cut-off valve IV to be powered on at the same time after the preheating of the combined adjustable top cutting gun reaches the set time, meanwhile, the PLC commands the driving device to be powered on, and the casting blank uniformly advances at the set speed to enter the formally cutting state; when the cutting length of the casting blank is finished to be the specified length, the laser distance measuring instrument transmits position data to the PLC, and the PLC instructs the oxygen cut-off valve I, the oxygen cut-off valve II, the oxygen cut-off valve III and the oxygen cut-off valve IV to lose power, the gas cut-off valve I and the gas cut-off valve II to lose power and close, and the combined adjustable side cutting gun and the combined adjustable top cutting gun are simultaneously flameout; when the running length of the casting blank is finished by the self-set length, the PLC commands the driving device to lose power, and the single casting blank is cut and is finished to wait for the overhead travelling crane to hoist.
The beneficial effects of the invention are as follows: the method can realize the functions of performing chamfering treatment on the billet of the variety steel with edge cracks generated by cold rolling before rolling, eliminating the root of the edge cracks generated before rolling and replacing a chamfer crystallizer.
Drawings
FIG. 1 is a front view of the present invention;
FIG. 2 is a top view of the present invention;
FIG. 3 is a side view of the present invention;
In the figure: the device comprises a chassis 1, a side guide wheel 2, a combined adjustable side cutting gun 3, an adjusting device 4, a combined adjustable top cutting gun 5, a casting blank 6, an upper guide wheel 7, a vertical slideway 8, a slide bar 9, a slide rail 10, a roller 11, a driving device 12, an oxygen gas distribution bag 13, an oxygen pressure reducing valve I14, a gas distribution bag 15, a gas pressure reducing valve I16, an oxygen pressure reducing valve II 17, an oxygen pressure reducing valve III 18, an oxygen pressure reducing valve IV 19, a gas pressure reducing valve II 20, an oxygen cutting valve I21, an oxygen cutting valve II 22, an oxygen cutting valve III 23, a gas cutting valve I24, an oxygen cutting valve IV 25, a gas cutting valve II 26, a metal hose 27, a gas distributing pipe 28, an igniter 29, a cutting gun terminal manual adjusting valve 30, a laser range finder 31, a centering guide wheel 32, a selection switch 33, a one-key cutting start key 34, a power switch 35, a frequency converter 36, a direct current power supply 37, a PLC38, a relay 39, a manual button 40, a potentiometer 41, a gas receiving 42, an oxygen receiving 43 and an oxygen receiving solenoid 44.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention more clear, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments, and it is apparent that the described embodiments are a small part of the embodiments of the present invention, but not all embodiments, and all other embodiments obtained by those skilled in the art without making creative efforts based on the embodiments of the present invention are included in the protection scope of the present invention.
The four-corner thermal state cutting device for the one-key continuous casting slab comprises a casting blank supporting, positioning and moving part, a gas cutting part and an electric appliance automatic control part, wherein the gas cutting part is arranged on the casting blank supporting, positioning and moving part, and the electric appliance automatic control part is connected with the gas cutting part;
the casting blank supporting, positioning and moving part comprises a chassis 1, a vertical slideway 8, a slide bar 9, a slide rail 10, rollers 11, a driving device 12 and centering and positioning guide wheels 32, wherein the rollers 11 are fixed on the chassis 1, the driving device 12 is suspended at the end parts of the rollers 11, four centering and positioning guide wheels 32 are welded on one side of the chassis 1, and the central connecting lines of the four centering and positioning guide wheels 32 are parallel to the longitudinal central line of the casting blank; the two vertical slide ways 8 are arranged on the two sides of the chassis 1, and the slide bar 9 and the slide rail 10 are arranged between the two vertical slide ways 8;
The gas cutting part comprises a side guide wheel 2, a combined adjustable side cutting gun 3, an adjusting device 4, a combined adjustable top cutting gun 5 and an upper guide wheel 7, wherein the side guide wheel 2 and the combined adjustable side cutting gun 3 are suspended on the adjusting device 4, the adjusting device 4 and the combined adjustable top cutting gun 5 are connected in series through a sliding rail 10, the upper guide wheel 7 is arranged on the sliding rail 10, and the upper guide wheel 7 and the side guide wheel 2 form a 'gantry' -shaped structure; the gas distribution bag 15 and the oxygen distribution bag 13 are respectively connected in series by a metal hose 27 with an oxygen pressure reducing valve I14, a gas pressure reducing valve I16, an oxygen pressure reducing valve II 17, an oxygen pressure reducing valve III 18, an oxygen pressure reducing valve IV 19, a gas pressure reducing valve II 20, an oxygen cut-off valve I21, an oxygen cut-off valve II 22, an oxygen cut-off valve III 23, a gas cut-off valve I24, an oxygen cut-off valve IV 25 and a gas cut-off valve II 26, and are supplied to the combined adjustable side cutting gun 3 and the combined adjustable top cutting gun 5 by six gas distribution pipes 28.
The electric appliance automation control part comprises a laser range finder 31, an igniter 29, a selection switch 33, a one-key cutting start key 34, a power switch 35, a frequency converter 36, a direct current power supply 37, a PLC38, a relay 39, a manual button 40 and a potentiometer 41.
A one-key continuous casting slab four-corner thermal state cutting method comprises the following steps:
(1) The casting blank is centered and placed, the casting blank 6 is hung on the roller 11, and the straight edge of one casting blank is abutted against two A, B points during placement;
(2) The positioning and opening degree adjustment of the guide wheels are realized, the driving roller 11 is operated to rotate through a remote controller, the left end head of the casting blank 6 slowly moves into a 'gantry' formed by the side guide wheels 2 and the upper guide wheels 7 and is aligned with the combined adjustable side cutting gun 3, and the opening degree of the two side guide wheels 2 is larger than the width of the casting blank by the adjusting device 4;
(3) The cutting gun is positioned and adjusted, and the combined adjustable side cutting gun 3 and the combined adjustable top cutting gun 5 are adjusted through an adjusting device to control the cutting angle and the cutting size;
(4) The flame adjustment of the cutting gun, the selection switch 33 is manually arranged, the ignition key is started, the first gas cut-off valve and the second gas cut-off valve are automatically opened, the two igniters 29 respectively ignite the two combined type adjustable top cutting guns 5 and simultaneously ignite the two combined type adjustable side cutting guns 3, the manual adjustment valve 30 respectively adjusts the gas and oxygen amount required by each cutting gun through adjusting the terminal of the cutting gun, and simultaneously the pressure of the gas and the oxygen is respectively set in a specified range and a range through the gas pressure reducing valve and the oxygen pressure reducing valve according to the required cutting thickness;
(5) Starting a one-key cutting process, wherein a PLC (programmable logic controller) firstly sends an automatic ignition instruction, a first gas cut-off valve and a second gas cut-off valve are simultaneously powered on, two igniters are simultaneously powered on, and a PLC sends an instruction to drive a device to electrically rotate so as to drive a casting blank to move downwards; when the combined adjustable side cutting gun and the cross section of the casting blank are in the same straight line, the laser range finder transmits position data to the PLC, the PLC automatically sends a power-off instruction of the driving device, the casting blank stops moving, meanwhile, the PLC instructs the oxygen cut-off valve to be opened once power is obtained, the preheating function of the two combined adjustable side cutting guns is formally started, and the casting blank is preheated; after the preheating reaches the set time, the PLC commands the cutting oxygen cut-off valve II to be powered on, the cutting function is formally started, meanwhile, the PLC commands the driving device to be powered on, the casting blank uniformly advances at a set speed, the casting blank enters a cutting state, when the casting blank walks to the state that the gun head of the combined adjustable top cutting gun is in the same straight line with the cross section of the head of the casting blank, the laser range finder transmits position data to the PLC, the PLC commands the cutting oxygen cut-off valve II to be powered off, the cutting function is stopped, the PLC commands the cutting oxygen cut-off valve II to be powered off, the PLC commands the oxygen cut-off valve II and the oxygen cut-off valve IV to be powered on at the same time after the preheating of the combined adjustable top cutting gun reaches the set time, meanwhile, the PLC commands the driving device to be powered on, and the casting blank uniformly advances at the set speed to enter the formally cutting state; when the cutting length of the casting blank is finished to be the specified length, the laser distance measuring instrument transmits position data to the PLC, and the PLC instructs the oxygen cut-off valve I, the oxygen cut-off valve II, the oxygen cut-off valve III and the oxygen cut-off valve IV to lose power, the gas cut-off valve I and the gas cut-off valve II to lose power and close, and the combined adjustable side cutting gun and the combined adjustable top cutting gun are simultaneously flameout; when the running length of the casting blank is finished by the self-set length, the PLC commands the driving device to lose power, and the single casting blank is cut and is finished to wait for the overhead travelling crane to hoist.
In practical application, the specific flow is as follows:
1. Centering and placing steel billet
The finished billet of the continuous casting machine, namely the casting blank 6, is hung above the off-line roller 11 by using double 25-day pliers, and one straight edge is required to be abutted against two points A, B during placement.
2. Positioning and opening degree adjustment of guide wheel
The driving roller 11 is operated to rotate through a remote controller, the left end head of the casting blank 6 slowly moves into a 'gantry' formed by the side guide wheels 2 and the upper guide wheels 7 and is aligned with the combined adjustable side cutting gun 3, the opening degree of the two side guide wheels 2 is larger than the width 1mm of the casting blank 6 through the adjusting device 4,
3. Cutting gun positioning adjustment
The cutting angle and the cutting size of the combined adjustable side cutting gun 3 and the combined adjustable top cutting gun 5 are adjusted by the adjusting means 4.
4. Cutting gun flame adjustment
The selection switch 33 is manually arranged, the ignition key is started, the first gas cut-off valve 24 and the second gas cut-off valve 26 are automatically opened, the two igniters 29 respectively ignite the two combined type adjustable top cutting guns 5, simultaneously ignite the two combined type adjustable side cutting guns 3, respectively adjust the gas and oxygen amount required by each gun through the manual adjustment valve 30 of the terminal of the cutting gun (according to the flame size experience judgment), and simultaneously set the pressure of the gas and the oxygen in a specified range and a range through the gas pressure reducing valve and the oxygen pressure reducing valve according to the required cutting thickness.
5. Start one-key cutting process
Starting a one-key cutting, a PLC38 firstly sends an automatic ignition instruction, a first gas cutting valve 24 and a second gas cutting valve 26 are simultaneously powered on, two igniters 29 are simultaneously powered on, the PLC38 sends an instruction, a driving device 12 is powered on to rotate so as to drive a casting blank 6 to move downwards to the cutting device, when the casting blank 6 reaches a position where a combined adjustable side cutting gun 3 and the cross section of the casting blank are in the same straight line, a laser range finder 31 transmits position data to the PLC38, the PLC38 automatically sends a power-off instruction of the driving device, the casting blank stops moving, meanwhile, the PLC38 instructs the first oxygen cutting valve 21 to be powered on, the preheating functions of the two combined adjustable side cutting guns 3 are formally started, the casting blank 6 is preheated, the PLC38 instructs the second oxygen cutting valve 22 to be powered on after 3 minutes (autonomously set according to cutting thickness), the cutting functions are formally started, and meanwhile the PLC38 instructs the driving device 12 to be powered on, the casting blank advances at a uniform speed under a set speed to enter a cutting state, when the casting blank 6 walks to a position that is identical to the cross section of the head of the casting blank, the laser distance meter 31 transmits position data to the PLC38, the PLC instructs the driving device 12 to lose power, meanwhile, the PLC instructs the cutting oxygen cut-off valve II 22 to lose power to stop the cutting function, after the combined adjustable top cutting gun 5 is preheated for 3 minutes (autonomously set according to the cutting thickness), the PLC instructs the oxygen cut-off valve II 22 and the oxygen cut-off valve IV 25 to be powered on at the same time, the PLC instructs the driving device 12 to be powered on, the casting blank 6 advances at a uniform speed under the set speed to enter a formal cutting state, when the cutting length of the casting blank 6 is 12000mm (the casting blank is 12000mm fixed), the laser distance meter transmits the position data to the PLC, the PLC instructs the oxygen cut-off valve II 22 to be powered on, the oxygen cut-off valve III 23, the gas cut-off valve I24 and the oxygen cut-off valve IV 25 are powered off, the gas cut-off valve I24 and the gas cut-off valve II 26 are powered off and closed, and the combined adjustable side cutting gun 3 and the combined adjustable top cutting gun 5 are simultaneously flameout. When the running length of the casting blank 6 is 13000mm (self-set value), the PLC instructs the driving device 12 to lose power, the cutting of a single casting blank is completed, and the crane is waited for lifting.
The arrangement of the side guide wheels 2 ensures that the vertical center line of the cutting device and the longitudinal center line of the casting blank always keep in an intersecting state;
The combined use of the upper guide wheel 7 and the side guide wheel 2 realizes that the combined adjustable side cutting gun 3 and the combined adjustable top cutting gun 6 carry out cutting operation along with the flatness of the casting blank 6 in the cutting process, namely the combined cutting device carries out adjustment operation along with the bending degree of the casting blank all the time in the cutting process on a microcosmic scale, and effectively ensures that the geometric dimension tolerance size of four corners of the cut casting blank is +/-2 mm.
Claims (1)
1. A one-key continuous casting slab four-corner thermal state cutting method is characterized in that: the device comprises a casting blank supporting, positioning and moving part, a gas cutting part and an electric appliance automatic control part, wherein the gas cutting part is arranged on the casting blank supporting, positioning and moving part, and the electric appliance automatic control part is connected with the gas cutting part;
The casting blank supporting, positioning and moving part comprises a chassis (1), a vertical slideway (8), a slide bar (9), a slide rail (10), rollers (11), a driving device (12) and centering and positioning guide wheels (32), wherein the rollers (11) are fixed on the chassis (1), the driving device (12) is suspended at the end parts of the rollers (11), the four centering and positioning guide wheels (32) are welded on one side of the chassis (1), and the central connecting lines of the four centering and positioning guide wheels (32) are parallel to the longitudinal central line of the casting blank; the two vertical slide ways (8) are arranged on two sides of the chassis (1), and the slide bar (9) and the slide rail (10) are arranged between the two vertical slide ways (8);
the gas cutting part comprises a side guide wheel (2), a combined type adjustable side cutting gun (3), an adjusting device (4), a combined type adjustable top cutting gun (5) and an upper guide wheel (7), wherein the side guide wheel (2) and the combined type adjustable side cutting gun (3) are suspended on the adjusting device (4), the adjusting device (4) and the combined type adjustable top cutting gun (5) are connected in series through a sliding rail (10), the upper guide wheel (7) is arranged on the sliding rail (10), and the upper guide wheel (7) and the side guide wheel (2) form a gantry structure; the gas dividing bag (15) and the oxygen dividing bag (13) are respectively connected in series with the first oxygen reducing valve (14), the first gas reducing valve (16), the second oxygen reducing valve (17), the third oxygen reducing valve (18), the fourth oxygen reducing valve (19), the second gas reducing valve (20), the first oxygen cutting valve (21), the second oxygen cutting valve (22), the third oxygen cutting valve (23), the first gas cutting valve (24), the fourth oxygen cutting valve (25) and the second gas cutting valve (26) through metal hoses (27), and are supplied to the combined adjustable side cutting gun (3) and the combined adjustable top cutting gun (5) through six gas dividing pipes (28); the electrical appliance automation control part comprises a laser range finder (31), an igniter (29), a selection switch (33), a one-key cutting start key (34), a power switch (35), a frequency converter (36), a direct-current power supply (37), a PLC (38), a relay (39), a manual button (40) and a potentiometer (41); comprises the following steps:
(1) Centering the casting blank, hanging the casting blank above the roller, and abutting a straight edge of one required to be positioned with two A, B points;
(2) The method comprises the steps of positioning guide wheels and adjusting opening degree, wherein a driving roller is operated to rotate through a remote controller, the left end head of a casting blank slowly moves into a 'gantry' formed by a side guide wheel and an upper guide wheel and is aligned with a combined adjustable side cutting gun, and the opening degree of the two side guide wheels is larger than the width of the casting blank by 1mm through an adjusting device;
(3) Positioning and adjusting the cutting gun, adjusting the combined adjustable side cutting gun and the combined adjustable top cutting gun through an adjusting device, and controlling the cutting angle and the cutting size;
(4) The flame adjustment of the cutting gun is carried out, a selection switch is arranged manually, an ignition key is started, a first fuel gas cut-off valve and a second fuel gas cut-off valve are automatically opened, two igniters respectively ignite two combined type adjustable top cutting guns and simultaneously ignite two combined type adjustable side cutting guns, the amount of fuel gas and oxygen required by each cutting gun is respectively adjusted by adjusting a manual adjusting valve of a terminal of the cutting gun, and simultaneously the pressure of the fuel gas and the oxygen is respectively set in a specified range and a range through a fuel gas pressure reducing valve and an oxygen pressure reducing valve according to the required cutting thickness;
(5) Starting a one-key cutting process, wherein a PLC (programmable logic controller) firstly sends an automatic ignition instruction, a first gas cut-off valve and a second gas cut-off valve are simultaneously powered on, two igniters are simultaneously powered on, and a PLC sends an instruction to drive a device to electrically rotate so as to drive a casting blank to move downwards; when the combined adjustable side cutting gun and the cross section of the casting blank are in the same straight line, the laser range finder transmits position data to the PLC, the PLC automatically sends a power-off instruction of the driving device, the casting blank stops moving, meanwhile, the PLC instructs the oxygen cut-off valve to be opened once power is obtained, the preheating function of the two combined adjustable side cutting guns is formally started, and the casting blank is preheated; after the preheating reaches the set time, the PLC commands the cutting oxygen cut-off valve II to be powered on, the cutting function is formally started, meanwhile, the PLC commands the driving device to be powered on, the casting blank uniformly advances at a set speed, the casting blank enters a cutting state, when the casting blank walks to the state that the gun head of the combined adjustable top cutting gun is in the same straight line with the cross section of the head of the casting blank, the laser range finder transmits position data to the PLC, the PLC commands the cutting oxygen cut-off valve II to be powered off, the cutting function is stopped, the PLC commands the cutting oxygen cut-off valve II to be powered off, the PLC commands the oxygen cut-off valve II and the oxygen cut-off valve IV to be powered on at the same time after the preheating of the combined adjustable top cutting gun reaches the set time, meanwhile, the PLC commands the driving device to be powered on, and the casting blank uniformly advances at the set speed to enter the formally cutting state; when the cutting length of the casting blank is finished to be the specified length, the laser distance measuring instrument transmits position data to the PLC, and the PLC instructs the oxygen cut-off valve I, the oxygen cut-off valve II, the oxygen cut-off valve III and the oxygen cut-off valve IV to lose power, the gas cut-off valve I and the gas cut-off valve II to lose power and close, and the combined adjustable side cutting gun and the combined adjustable top cutting gun are simultaneously flameout; when the running length of the casting blank is finished by the self-set length, the PLC commands the driving device to lose power, and the single casting blank is cut and is finished to wait for the overhead travelling crane to hoist.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210104987.6A CN114473130B (en) | 2022-01-28 | 2022-01-28 | Four-corner thermal state cutting device and method for one-key continuous casting slab |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210104987.6A CN114473130B (en) | 2022-01-28 | 2022-01-28 | Four-corner thermal state cutting device and method for one-key continuous casting slab |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN114473130A CN114473130A (en) | 2022-05-13 |
| CN114473130B true CN114473130B (en) | 2024-06-21 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202210104987.6A Active CN114473130B (en) | 2022-01-28 | 2022-01-28 | Four-corner thermal state cutting device and method for one-key continuous casting slab |
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Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN204711142U (en) * | 2015-06-30 | 2015-10-21 | 日照钢铁控股集团有限公司 | The synchronous cutter for cutting corners of a kind of slab |
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| CN217142649U (en) * | 2022-01-28 | 2022-08-09 | 唐山不锈钢有限责任公司 | Continuous casting slab four corners thermal state cutting device |
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| CN204711142U (en) * | 2015-06-30 | 2015-10-21 | 日照钢铁控股集团有限公司 | The synchronous cutter for cutting corners of a kind of slab |
| CN108015245A (en) * | 2017-12-27 | 2018-05-11 | 鞍钢股份有限公司 | Hot blank corner crack online cleaning device and method |
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