CN113523492A - Online segmented cutting device and method for heat-treated steel plate - Google Patents
Online segmented cutting device and method for heat-treated steel plate Download PDFInfo
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- CN113523492A CN113523492A CN202110896247.6A CN202110896247A CN113523492A CN 113523492 A CN113523492 A CN 113523492A CN 202110896247 A CN202110896247 A CN 202110896247A CN 113523492 A CN113523492 A CN 113523492A
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- 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
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- B23K7/10—Auxiliary devices, e.g. for guiding or supporting the torch
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Abstract
The invention provides an online subsection cutting device and method for a heat-treated steel plate. The online sectional cutting of the steel plate does not influence normal conveying, solves the problem that the steel plates with different thicknesses and steel plate types are difficult to be segmented online, improves the time yield of the steel plate rolling mill, and shortens the delivery cycle of the steel plates. Meanwhile, the infrared temperature measuring device before cutting also ensures the cutting quality of the steel plate, and further improves the quality of the steel plate.
Description
Technical Field
The invention relates to a steel plate cutting device and a method, in particular to a device and a method for cutting a heat-treated steel plate in a first subsection mode.
Background
After rolling of heat-treated steel sheets, tempering or tempering heat treatment is often required to obtain good texture and properties. However, the heat treatment furnace has a certain limit to the length of the steel plate fed into the furnace. When the steel plate is long, the steel plate spans a plurality of heating subareas in the heat treatment furnace, the gas heat value and the furnace temperature of each subarea are not consistent, the longitudinal heat treatment process uniformity of the steel plate in the furnace can be influenced, and the product performance is influenced. In addition, in logistics, the span distance of most plants is generally 24 meters, and in multi-span operation, a cross vehicle is usually adopted for transferring steel plates, the steel plates need to pass through the columns between the plant spans, the length of the steel plates is not too long, and the total length of the steel plates is not more than 20 meters. Meanwhile, if the steel plate is too thin or too long, two ends of the steel plate can collapse downwards due to self weight when the crown block is used for hoisting, the steel plate is easy to be damaged in the hoisting process, the steel plate is not beneficial to transportation, and the length of the thin steel plate with the thickness of less than or equal to 20mm entering the furnace is not more than 14 meters. When the rolling mother plate of the heat treatment type steel plate is longer, the steel plate is often required to be segmented before entering a heat treatment furnace.
Generally, an on-line mechanical shearing device is arranged in the post-process of the rolling mill to implement on-line segmentation, however, the device is greatly limited by shearing toughness materials, and is generally only suitable for shearing common strength steel plates with the thickness less than 45mm, and is difficult to perform segmentation shearing work of high-strength steel plates. If the steel plate is thicker or has higher strength, manual offline fire cutting segmentation is generally adopted. The segmentation method is low in efficiency, and meanwhile, the cutting and transferring load of the cross crown block on the steel plate is increased, the time for the steel plate to reach the heat treatment furnace is delayed, and the delivery date of the steel plate is prolonged.
In order to avoid the adverse effect of hot cutting under a heat treatment type steel plate line, a steel rolling mill usually controls the total length of a rolled steel plate deliberately, reduces the material lifting weight, has short rolling length and does not need segmented mode production, and the method greatly reduces the rolling efficiency of a rolling mill, thus leading to the increase of the cost of a steel rolling process.
Chinese patent No. 201610798073.9 discloses a flame cutting method for thick steel plate, belonging to the field of flame cutting, and used for solving the problems of non-penetration of steel plate with thickness of more than 300mm, rough and uneven tangent plane, large bevel angle and wide cutting seam.
Disclosure of Invention
The invention provides an online segmented cutting device for a heat-treated steel plate, which solves the technical problems that the existing online mechanical shearing equipment is difficult to perform segmented shearing on a thick steel plate, time and labor are consumed when the steel plate is cut off from a steel plate line in a fire cutting way, and the like. The material lifting of the heat treatment type steel plate is not limited by the rolling length, the cutting and the segmentation can be synchronously completed on the conveying roller way during rolling, the working efficiency is high, the quality of the cutting end of the steel plate is relatively flat, and finally the condition that the steel plate is directly fed into a heat treatment furnace after being rolled is realized.
The invention provides an online segmented cutting device for a heat-treated steel plate, which comprises an outer frame and a slidable inner frame;
the outer frame is overhead above the roller way;
the inner frame is provided with a cross beam parallel to the cutting direction, and the end part of the cross beam is provided with a longitudinal moving trolley for moving the cross beam;
the crossbeam is equipped with electromagnet and slidable sideslip dolly, be equipped with the cutting torch on the sideslip dolly.
In detail, in order to realize that the steel plate is steadily cut in the transportation process, the electromagnetic chuck is electrified to suck the steel plate, and the magnetic force of the electromagnetic chuck cannot influence the normal forward transportation of the steel plate on the roller way. Under the action of forward movement of the steel plate, the cross beam is driven, and the cross beam and the steel plate synchronously move forward on the inner frame by utilizing the longitudinally moving trolley at the end. At the moment, the steel plate and the cross beam are relatively static, stable cutting conditions are created for the transverse trolley on the cross beam, and the transverse trolley moves, so that the cutting gun can cut the steel plate in sections. And after cutting, the electromagnetic chuck is powered off and separated from the steel plate, and one-time online cutting of the steel plate is completed. Through the synchronous motion of the steel plate and the cross beam, the online cutting of the steel plate is realized, and the condition that the roller way transportation is stopped due to the segmented cutting is avoided, so that the working efficiency is improved.
Further, the outer frame with be equipped with the gyro wheel between the internal frame, through setting up the promotion motor on the outer frame, control the internal frame slide in the outer frame.
In detail, in order to adapt to steel plates with different thicknesses and keep the steel plates and the cross beam to synchronously move, the inner frame connected with the cross beam can move up and down in the outer frame through the rollers under the action of the lifting motor. When the steel plate is conveyed to the outer frame, the lifting motor works to lower the inner frame to the bottom end of the electromagnetic chuck to be contacted with the steel plate. Because the height of the inner frame is adjustable, the steel plates with different thicknesses can be cut through the slidable inner frame.
Further, the magnetic force generated by the electromagnetic chuck is 5-10 kN.
In detail, because the steel plate is transported by the roller in the transporting process, when the magnetic field generated by the electromagnetic chuck is too high, the generated magnetic force is too large, so that the operation of the roller is influenced, meanwhile, the normal transportation of the steel plate is also influenced, and the synchronous motion of the steel plate and the cross beam cannot be realized. When the magnetic field generated by the electromagnetic chuck is too weak, the electromagnetic chuck and the steel plate cannot be adsorbed and fixed, and the steel plate and the cross beam cannot synchronously move. Therefore, the magnetic force generated by the electromagnetic chuck is 5-10kN, so that the relative rest of the cross beam and the steel plate can be met, and the normal transportation of the steel plate on a roller way can be realized.
Further, in the cutting process, in order to avoid the damage of the cutting gun to the roller way, the shaft roller at the bottom of the outer frame is detached, and the detached shaft roller cannot influence the cutting of the steel plate in the transportation process due to the fact that the length of the steel plate is long enough and the cutting area is limited.
Furthermore, the bottom of the transverse trolley is 15-20mm higher than the top end of the electromagnetic chuck.
In detail, in order to avoid the cross travelling trolley to be blocked by the electromagnetic chuck in the cutting process, the bottom of the cross travelling trolley is higher than the top of the electromagnetic chuck, and the cross travelling trolley can smoothly move on the cross beam.
Furthermore, the distance between the top end of the outer frame and the roller way plane is 1.8-2.2 m.
In detail, the inner frame can be smoothly moved up and down in the outer frame
In order to facilitate maintenance, the outer frame is used.
Furthermore, an infrared distance meter and an infrared thermometer are arranged on the outer frame.
In detail, in order to determine the cutting line of the steel plate, an infrared distance meter is arranged on the outer frame, the cutting line is determined according to the length of the steel plate to be cut, when the required length is reached, the cutting line is fed back to the control system, the inner frame is lowered, the gun head of the cutting gun is aligned with the cutting line, and the cutting action is further completed.
In more detail, the infrared thermometer is used to measure the temperature of the steel plate. When the steel plate is cut, the temperature of the steel plate is required to be 150-400 ℃, and if the temperature of the steel plate is higher, the magnetic force of a magnetic disc is influenced, so that the capability of the flame cutting machine for adsorbing and fixing the steel plate is weakened, and the gun head of the cutting machine is unstable and cuts the inclined steel plate; when the temperature of the steel sheet is too low, the cutting rate may be affected on the one hand, and the temperature condition for pre-heat cutting may not be provided on the other hand, thereby weakening the ability of the steel sheet to resist cutting cracks. Therefore, when the temperature of the steel plate is too high or too low, the infrared thermometer can give an alarm to the control system to brake the roller way.
Furthermore, the cutting gun adopts a coal oxygen cutting gun, the oxygen output pressure is 0.8MPa, and the coke oven gas output pressure is 0.3 MPa;
the cutting torch is provided with three cutting modes, mode one: the cutting speed is 0.8 m/min; and a second mode: the cutting speed is 0.65 m/min; and a third mode: the cutting speed was 0.4 m/min.
In detail, the cutting torch is a coal oxygen cutting torch because it is low in cost and easy to operate compared to a plasma or laser type cutting machine, and if an acetylene gas source is used, the cost is also increased. In order to adapt to steel plates with different thicknesses, the cutting gun is provided with three cutting modes, and the thickness range of the steel plates to be cut can be 8-80 mm. When the thickness of the steel plate is 8-30mm, cutting by adopting a first mode; when the thickness of the steel plate is 30-60mm, cutting by adopting a mode two; and when the thickness of the steel plate is 60-80mm, adopting a mode three cutting. Three different cutting modes are set according to the thickness specification of the steel plate, so that the quality of the cut-off end part of the steel plate is improved conveniently, and the energy consumption is saved. Adopt different cutting speed, can realize with the synchronous motion of steel sheet, and can effectively cut off the steel sheet, reduce the cutting latency, also guaranteed steel sheet cutting tip quality simultaneously.
Furthermore, a slag pit is arranged below the inner frame.
In detail, waste slag generated by cutting can be collected in a centralized manner through the slag pits below the inner frame and then processed in a unified manner.
Furthermore, centering devices are arranged on two sides of the roller way.
In detail, before waiting to cut the steel sheet and carrying to circumscribed frame, use centering device to make the steel sheet position align between two parties, guarantee that crossbeam and steel sheet side limit are 90 right angles, and the steel sheet cutting tip is perpendicular with the steel sheet side after the flame cut, guarantees the cutting effect.
On the other hand, the invention provides a method for the online segmentation cutting of a heat-treated steel plate, which adopts the online segmentation cutting device to perform the segmentation cutting on the steel plate and comprises the following steps:
s1, inputting the thickness and the cutting length of a steel plate to be cut before cutting the steel plate, and setting a mode of a cutting gun;
s2, centering the steel plate through the centering device, simultaneously measuring the temperature of the steel plate by the infrared thermometer, and when the temperature is 150-400 ℃, operating a roller way and conveying the steel plate forwards;
s3, acquiring a cutting line of the steel plate by using an infrared distance meter according to the input cutting length;
s4, after the cutting line of the steel plate is aligned and positioned with the cutting gun, the lifting motor works to control the inner frame to descend until the bottom of the electromagnetic chuck contacts the steel plate, and then the electromagnetic chuck is electrified to suck the steel plate;
s5, the cross beam moves synchronously with the steel plate, and meanwhile, a cutting gun cuts the steel plate;
and S6, after cutting is finished, the electromagnetic chuck loses power, the inner frame rises, and the transverse moving trolley resets.
Compared with the prior art, the invention has the following beneficial effects:
the invention provides an online subsection cutting device and method for a heat-treated steel plate. The online sectional cutting of the steel plate does not influence normal conveying, solves the problem that the steel plates with different thicknesses and steel plate types are difficult to be segmented online, improves the time yield of the steel plate rolling mill, and shortens the delivery cycle of the steel plates. Meanwhile, the infrared temperature measuring device before cutting also ensures the cutting quality of the steel plate, and further improves the quality of the steel plate.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings needed to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present invention, and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained according to the drawings without inventive efforts.
Fig. 1 is a front view of a sectioning cutting apparatus provided in embodiment 1 of the present invention;
fig. 2 is a top view of a sectioning cutting apparatus provided in embodiment 1 of the present invention;
1-a steel plate; 2-a shaft roller; 3-a slag pit; 4-a roller; 5, an inner frame; 6-an outer frame; 7-an infrared distance meter; 8-infrared thermometer; 9-lifting the motor; 10-a lifting wheel; 11-a cutting gun; 12-traversing the trolley; 13-an electromagnetic chuck; 14-a centering device; 15-longitudinally moving the trolley; 16-beam.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. The components of embodiments of the present invention generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations.
Thus, the following detailed description of the embodiments of the present invention, presented in the figures, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures. Furthermore, the terms "first," "second," and the like are used merely to distinguish one description from another, and are not to be construed as indicating or implying relative importance.
In the description of the present invention, it should be noted that the terms "horizontal", "vertical", "inside", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings or orientations or positional relationships that the products of the present invention conventionally place when used, and are only used for convenience in describing the present invention and simplifying the description, but do not indicate or imply that the devices or elements to be referred must have specific orientations, be constructed in specific orientations, and be operated, and thus, should not be construed as limiting the present invention.
Furthermore, the terms "disposed," "mounted," and "connected" are to be construed broadly and may include, for example, a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
The following describes the device and method for cutting heat-treated steel plate on-line in sections according to the embodiments of the present application.
Example 1
As shown in fig. 1-2, the present embodiment provides an on-line segmented cutting apparatus for heat-treated steel sheets, comprising an outer frame 6 and a slidable inner frame 5; the outer frame 6 is arranged above the roller way of the shaft roller 2 in an overhead manner; the outer frame 6 with be equipped with gyro wheel 4 between the inner frame 5, through setting up the hoist motor 9 on outer frame 6, hoist motor 9 is through cooperating with lifting wheel 10, control inner frame 5 is in slide in outer frame 6.
Further, the inner frame 5 is provided with a cross beam 16 parallel to the cutting direction, and the end of the cross beam 16 is provided with a longitudinal movement trolley 15 for moving the cross beam 16.
Furthermore, the crossbeam 16 is equipped with electromagnetic chuck 13 and slidable travelling car 12, be equipped with cutting gun 11 on the travelling car 12, the travelling car 12 vehicle bottom is higher than electromagnetic chuck 13 top 18mm, the outer frame top is 2m apart from the roller plane.
Furthermore, the cutting gun 11 adopts a coal oxygen cutting gun, the oxygen output pressure is 0.8MPa, and the coke oven gas output pressure is 0.3 MPa;
the cutting torch 11 is provided with three cutting modes, mode one: the cutting speed is 0.8 m/min; and a second mode: the cutting speed is 0.65 m/min; and a third mode: the cutting speed was 0.4 m/min.
Further, the generated magnetic force of the electromagnetic chuck 13 is 8 kN.
Further, an infrared distance measuring instrument 7 and an infrared temperature measuring instrument 8 are arranged on the outer frame 6.
Further, a slag pit 3 is arranged below the inner frame 5.
Further, centering devices 14 are arranged on two sides of the roller way.
A method for cutting a heat-treated steel plate in sections on line adopts an on-line section cutting device to cut the steel plate in sections, and comprises the following steps:
s1, inputting the thickness of a steel plate 1 to be cut to be 10mm and the cutting length to be 8m before cutting the steel plate 1, and setting the mode of a cutting gun 11 as a mode I;
s2, centering the steel plate 1 through the centering device 14, measuring the temperature of the steel plate 1 by the infrared thermometer 8, and when the temperature is 230 ℃, operating a roller way and conveying the steel plate 1 forwards;
s3, utilizing an infrared distance meter 7 to measure the length of the steel to be 8 m;
s4, aligning and positioning the cutting line of the steel plate 1 with the cutting gun 11, and electrifying the electromagnetic chuck 13 to suck the steel plate 1 after the lifting motor 9 works to control the inner frame 5 to descend until the bottom of the electromagnetic chuck 13 contacts the steel plate 1;
s5, the beam 16 moves synchronously with the steel plate 1, and the cutting gun 11 cuts the steel plate 1;
s6, after cutting, the electromagnetic chuck 13 is powered off, the inner frame 5 rises, and the transverse trolley 12 resets.
Example 2
The embodiment provides an online subsection cutting device for a heat-treated steel plate, which comprises an outer frame 6 and a slidable inner frame 5; the outer frame 6 is arranged above the roller way of the shaft roller 2 in an overhead manner; the outer frame 6 with be equipped with gyro wheel 4 between the inner frame 5, through setting up the hoist motor 9 on outer frame 6, hoist motor 9 is through cooperating with lifting wheel 10, control inner frame 5 is in slide in outer frame 6.
Further, the inner frame 5 is provided with a cross beam 16 parallel to the cutting direction, and the end of the cross beam 16 is provided with a longitudinal movement trolley 15 for moving the cross beam 16.
Furthermore, the crossbeam 16 is equipped with electromagnetic chuck 13 and slidable travelling car 12, be equipped with cutting gun 11 on the travelling car 12, the travelling car 12 vehicle bottom is higher than electromagnetic chuck 13 top 20mm, the outer frame top is 2m apart from the roller plane.
Furthermore, the cutting gun adopts a coal oxygen cutting gun, the oxygen output pressure is 0.8MPa, and the coke oven gas output pressure is 0.3 MPa;
the cutting torch 11 is provided with three cutting modes, mode one: the cutting speed is 0.8 m/min; and a second mode: the cutting speed is 0.65 m/min; and a third mode: the cutting speed was 0.4 m/min.
Further, the generated magnetic force of the electromagnetic chuck 13 is 10 kN.
Further, an infrared distance measuring instrument 7 and an infrared temperature measuring instrument 8 are arranged on the outer frame 6.
Further, a slag pit 3 is arranged below the inner frame 5.
Further, centering devices 14 are arranged on two sides of the roller way.
A method for cutting a heat-treated steel plate in sections on line adopts an on-line section cutting device to cut a steel plate 1 in sections, and comprises the following steps:
s1, inputting the thickness of a steel plate 1 to be cut to be 50mm and the cutting length to be 10m before cutting the steel plate 1, and setting the mode of a cutting gun 11 as a mode II;
s2, centering the steel plate 1 through the centering device 14, measuring the temperature of the steel plate 1 by the infrared thermometer 8, and when the temperature is 300 ℃, operating a roller way and conveying the steel plate 1 forwards;
s3, utilizing an infrared distance meter 7 to measure the length of the steel to be 10 m;
s4, aligning and positioning the cutting line of the steel plate 1 with the cutting gun 11, and electrifying the electromagnetic chuck 13 to suck the steel plate 1 after the lifting motor 9 works to control the inner frame 5 to descend until the bottom of the electromagnetic chuck 13 contacts the steel plate 1;
s5, the beam 16 moves synchronously with the steel plate 1, and the cutting gun 11 cuts the steel plate 1;
s6, after cutting, the electromagnetic chuck 13 is powered off, the inner frame 5 rises, and the transverse trolley 12 resets.
Example 3
The embodiment provides an online subsection cutting device for a heat-treated steel plate, which comprises an outer frame 6 and a slidable inner frame 5; the outer frame 6 is arranged above the roller way of the shaft roller 2 in an overhead manner; the outer frame 6 with be equipped with gyro wheel 4 between the inner frame 5, through setting up the hoist motor 9 on outer frame 6, hoist motor 9 is through cooperating with lifting wheel 10, control inner frame 5 is in slide in outer frame 6.
Further, the inner frame 5 is provided with a cross beam 16 parallel to the cutting direction, and the end of the cross beam 16 is provided with a longitudinal movement trolley 15 for moving the cross beam 16.
Furthermore, the crossbeam 16 is equipped with electromagnetic chuck 13 and slidable travelling car 12, be equipped with cutting gun 11 on the travelling car 12, the travelling car 12 vehicle bottom is higher than electromagnetic chuck 13 top 20mm, the outer frame top is 2m apart from the roller plane.
Furthermore, the cutting gun 11 adopts a coal oxygen cutting gun, the oxygen output pressure is 0.8MPa, and the coke oven gas output pressure is 0.3 MPa;
the cutting torch 11 is provided with three cutting modes, mode one: the cutting speed is 0.8 m/min; and a second mode: the cutting speed is 0.65 m/min; and a third mode: the cutting speed was 0.4 m/min.
Further, the generated magnetic force of the electromagnetic chuck 13 is 5 kN.
Further, an infrared distance measuring instrument 7 and an infrared temperature measuring instrument 8 are arranged on the outer frame 6.
Further, a slag pit 3 is arranged below the inner frame 5.
Further, centering devices 14 are arranged on two sides of the roller way.
A method for cutting a heat-treated steel plate in sections on line adopts an on-line section cutting device to cut a steel plate 1 in sections, and comprises the following steps:
s1, inputting the thickness of a steel plate 1 to be cut to be 76mm and the cutting length to be 5m before cutting the steel plate 1, and setting the mode of a cutting gun 11 as a mode I;
s2, centering the steel plate 1 through the centering device 14, simultaneously measuring the temperature of the steel plate 1 by the infrared thermometer 8, and when the temperature is 350 ℃, operating a roller way and conveying the steel plate 1 forwards;
s3, utilizing an infrared distance meter 7 to measure the length of the steel to be 5 m;
s4, aligning and positioning the cutting line of the steel plate 1 with the cutting gun 11, and electrifying the electromagnetic chuck 13 to suck the steel plate 1 after the lifting motor 9 works to control the inner frame 5 to descend until the bottom of the electromagnetic chuck 13 contacts the steel plate 1;
s5, the beam 16 moves synchronously with the steel plate 1, and the cutting gun 11 cuts the steel plate 1;
s6, after cutting, the electromagnetic chuck 13 is powered off, the inner frame 5 rises, and the transverse trolley 12 resets.
Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; while the invention has been described in detail and with reference to the foregoing embodiments, it will be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; and the modifications or the substitutions do not make the essence of the corresponding technical solutions depart from the scope of the technical solutions of the embodiments of the present invention.
Claims (10)
1. The on-line segmented cutting device for the heat-treated steel plate is characterized by comprising an outer frame and a slidable inner frame;
the outer frame is overhead above the roller way;
the inner frame is provided with a cross beam parallel to the cutting direction, and the end part of the cross beam is provided with a longitudinal moving trolley for moving the cross beam;
the crossbeam is equipped with electromagnet and slidable sideslip dolly, be equipped with the cutting torch on the sideslip dolly.
2. The inline segment cutting apparatus of claim 1, wherein rollers are provided between the outer frame and the inner frame, and the inner frame is controlled to slide within the outer frame by a lift motor provided on the outer frame.
3. The on-line segment cutting device according to claim 2, wherein the generated magnetic force of the electromagnetic chuck is 5-10 kN.
4. The on-line section cutting device as claimed in claim 3, wherein the bottom of the traverse trolley is 15-20mm higher than the top end of the electromagnetic chuck.
5. The on-line segmentation device according to claim 4, wherein the distance between the top end of the outer frame and the roller plane is 1.8-2.2 m.
6. The on-line segment cutting device according to claim 5, wherein the outer frame is provided with an infrared distance measuring instrument and an infrared temperature measuring instrument.
7. The online segment cutting device according to claim 6, wherein the cutting gun is a coal oxygen cutting gun, the oxygen output pressure is 0.8MPa, and the coke oven gas output pressure is 0.3 MPa;
the cutting torch is provided with three cutting modes, mode one: the cutting speed is 0.8 m/min; and a second mode: the cutting speed is 0.65 m/min; and a third mode: the cutting speed was 0.4 m/min.
8. The inline segment cutting apparatus of claim 7, wherein a slag pit is provided under the inner frame.
9. The on-line segmentation device according to claim 8, wherein centering devices are disposed on two sides of the roller bed.
10. An on-line segmentation cutting method for heat-treated steel plates, which is characterized in that the on-line segmentation cutting device of any one of claims 1 to 9 is adopted to perform segmentation cutting on the steel plates, and the method comprises the following steps:
s1, inputting the thickness and the cutting length of a steel plate to be cut before cutting the steel plate, and setting a mode of a cutting gun;
s2, centering the steel plate through the centering device, simultaneously measuring the temperature of the steel plate by the infrared thermometer, and when the temperature is 150-400 ℃, operating a roller way and conveying the steel plate forwards;
s3, acquiring a cutting line of the steel plate by using an infrared distance meter according to the input cutting length;
s4, after the cutting line of the steel plate is aligned and positioned with the cutting gun, the lifting motor works to control the inner frame to descend until the bottom of the electromagnetic chuck contacts the steel plate, and then the electromagnetic chuck is electrified to suck the steel plate;
s5, the cross beam moves synchronously with the steel plate, and meanwhile, a cutting gun cuts the steel plate;
and S6, after cutting is finished, the electromagnetic chuck loses power, the inner frame rises, and the transverse moving trolley resets.
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| CN211162323U (en) * | 2019-10-09 | 2020-08-04 | 张家港宏昌钢板有限公司 | Flame cutting mechanism of continuous casting machine |
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