CN109570246B - Device and method for removing oxide scale on surface of cold-corrected steel plate - Google Patents
Device and method for removing oxide scale on surface of cold-corrected steel plate Download PDFInfo
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- CN109570246B CN109570246B CN201710903323.5A CN201710903323A CN109570246B CN 109570246 B CN109570246 B CN 109570246B CN 201710903323 A CN201710903323 A CN 201710903323A CN 109570246 B CN109570246 B CN 109570246B
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- steel plate
- electromagnet
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- cross beam
- grating
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B45/00—Devices for surface or other treatment of work, specially combined with or arranged in, or specially adapted for use in connection with, metal-rolling mills
- B21B45/04—Devices for surface or other treatment of work, specially combined with or arranged in, or specially adapted for use in connection with, metal-rolling mills for de-scaling, e.g. by brushing
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B08—CLEANING
- B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
- B08B7/00—Cleaning by methods not provided for in a single other subclass or a single group in this subclass
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Cleaning And De-Greasing Of Metallic Materials By Chemical Methods (AREA)
- Straightening Metal Sheet-Like Bodies (AREA)
Abstract
The invention discloses a device and a method for removing oxide scales on the surface of a cold straightening steel plate, and the device comprises a collecting box arranged between conveying roller ways, stand columns arranged on two sides of the conveying roller ways, a traveling mechanism arranged on the stand columns, a lifting mechanism arranged on the traveling mechanism, an electromagnet arranged at the bottom of the lifting mechanism, a laser distance meter arranged above an outlet of a cold straightening machine, a front grating and a rear grating respectively arranged on the front side and the rear side of the electromagnet, and a PLC (programmable logic controller) for receiving detection signals of the laser distance meter and the front grating and the rear grating and controlling the lifting mechanism and the electromagnet to operate. The invention also discloses a method for removing the oxide scale on the surface of the cold-corrected steel plate. The steel plate surface detector can automatically and completely remove the oxide scales on the surface of the steel plate after cold straightening, ensures the normal work of the steel plate surface detector after cold straightening and the normal operation of the steel plate number spraying machine, eliminates the scratch defect on the surface of the steel plate after cold straightening, does not need to be swept, and is free of noise and dust raising and environment-friendly.
Description
Technical Field
The invention relates to waste material transportation equipment, in particular to a device and a method for removing oxide scales on the surface of a cold-straightening steel plate.
Background
The modern wide and thick plate cold straightening machine has the characteristics of high straightening speed, large straightening force and high straightening precision, and usually adopts a straightening scheme with multiple rollers, small roller diameter and large deformation. The performance of the oxide skin coating on the surface of the straightened plate is greatly different from that of the base material of the plate, and when the base material of the plate generates larger elastic-plastic deformation in the straightening process, the oxide skin on the surface does not have plastic deformation capability, has lower anti-damage strength and generates fracture due to poor adhesion with the base. When the plate is reversely bent by the straightening roller, the upper surface and the lower surface are in different alternating stress states, one surface is stretched by tension to generate cracks on the interface of the oxide skin and the matrix, and the other surface is stressed by compression to crush the oxide skin into a net shape. After repeated stretching, bending, crushing and rolling by multi-roll straightening, the oxide skin is crushed into a net shape and falls off.
Due to the scale breaking effect of the cold straightening machine, a large amount of scale falling off is generated on the upper surface and the lower surface of the steel plate in the straightening process. Wherein the oxide skin that the steel sheet lower surface drops can fall because of the action of gravity, and the convenient to use chute is collected, is taken out by dust absorption filter equipment. The scale detached from the upper surface of the steel sheet remains on the surface of the steel sheet. The steel plate after cold straightening needs to be printed with steel plate numbers, the printed characters are sprayed on iron scales, the steel plate is free of information, and meanwhile, the steel plate surface can be scratched when the steel plate is taken off from the line in the process of suction lifting. At present, manual cleaning is adopted to clean iron scale, which causes dust emission and environmental pollution.
CN105855326A discloses a cold straightening process of an easy-to-grow iron scale steel plate, which is used for carrying out buckling degree measurement on a buckling steel plate with a plate surface iron oxide scale weight and recording the unevenness of the steel plate, wherein the unevenness is less than 16mm/2mm, so that the shot blasting condition is met; performing shot blasting operation on the steel plate, and eliminating a layer of iron oxide scale on the surface after shot blasting; after the shot blasting is finished, straightening operation is carried out, and a blowing device is respectively added at the front and the back of the cold straightening machine; the method comprises the steps of judging whether the surface of a steel plate has an iron oxide sheet or not by measuring the buckling degree of the steel plate, and straightening the steel plate after shot blasting if the surface of the steel plate has the iron oxide sheet. In fact, a shot blasting procedure is added, and the cost is increased. In addition, blowing devices are additionally arranged at the front and the rear of the cold straightener, so that the environment pollution is serious.
Disclosure of Invention
The invention aims to solve the defects and provides a device and a method for removing iron scale on the surface of a cold-straightening steel plate, which can avoid steel piling faults caused by difficult climbing of waste materials due to gradient problems.
In order to achieve the above object, the present invention adopts the following technical solutions.
The utility model provides a cold steel sheet surface oxidation iron sheet clearing device of rectifying, locate cold machine export the place ahead, including locating the collecting box between the rollgang, locate the stand of rollgang both sides, locate running gear on the stand, locate elevating system on the running gear, locate the electro-magnet of elevating system bottom, locate the laser range finder of cold machine export top, locate preceding, back grating of electro-magnet front and back side respectively, receive the detection signal of laser range finder and preceding, back grating and control elevating system, the PLC of electro-magnet operation.
The walking mechanism comprises a cross beam, walking wheels arranged on two sides of the cross beam, guide rails arranged along the direction of the conveying roller way, and the cross beam walks on the guide rails through the walking wheels.
The lifting mechanism comprises a servo motor arranged on the cross beam and a ball screw connected with the servo motor.
The electromagnet is arranged at the lower end of the ball screw.
And the cross beam is also provided with a cross beam positioning pin.
The method for removing the scale on the surface of the cold-corrected steel plate comprises the following steps:
A. detecting the thickness of the steel plate straightened by the cold straightening machine through a laser range finder arranged above an outlet of the cold straightening machine, and sending a detection signal to the PLC;
B. according to the measured thickness, the PLC controls the servo motor to operate so that the electromagnet descends to a corresponding height;
C. when the head of the running strip steel triggers the front grating, the PLC controls the electromagnet to be electrified, and iron oxide scales on the surface of the steel plate are absorbed and adsorbed on the electromagnet;
D. after the tail of the running strip steel triggers the rear grating, the PLC controls the electromagnet to lose power and starts demagnetization, and iron oxide scales adsorbed on the electromagnet fall into the collection box.
Further comprising step E: and (4) pulling out the positioning pin of the cross beam, moving the cross beam and the electromagnet away from the upper part of the collecting box, hoisting and conveying the collecting box to a waste hopper through a travelling crane, and pouring the iron oxide scale.
In the technical scheme of the invention, the device and the method for removing the scale on the surface of the cold-corrected steel plate can automatically and completely remove the scale on the surface of the cold-corrected steel plate, ensure the normal work of a steel plate surface inspection instrument after cold correction and the normal operation of a steel plate number spraying machine, eliminate the scratch defect on the surface of the cold-corrected steel plate, do not need purging, have no noise and no dust, and are green and environment-friendly.
Drawings
FIG. 1 is a schematic view of the construction of the cleaning apparatus of the present invention;
FIG. 2 is a side schematic view of the purging device of the present invention;
fig. 3 is a block flow diagram of the purging method of the present invention.
Detailed Description
The technical scheme of the invention is further explained by combining the attached drawings.
The device for removing the scale on the surface of the cold-corrected steel plate is shown in figures 1-2, is arranged in front of an outlet of a cold-correcting machine 1, and mainly comprises a collecting box 3 arranged between conveying roller ways 2, upright posts 4 arranged on bases 6 at two sides of the conveying roller ways 2, a travelling mechanism arranged on the upright posts 4, a lifting mechanism arranged on the travelling mechanism, an electromagnet 5 arranged at the bottom of the lifting mechanism, a laser range finder 7 arranged above the outlet of the cold-correcting machine 1, front and rear gratings 8 and 9 respectively arranged at the front and rear sides of the electromagnet 5, and a PLC (not shown in the figure) for receiving detection signals of the laser range finder 7 and the front and rear gratings 8 and 9 and controlling the operation of the lifting mechanism and the electromagnet 5.
As an embodiment, the travelling mechanism comprises a cross beam 10, travelling wheels 11 arranged on two sides of the cross beam 10, guide rails 12 arranged on the upright posts 4 along the direction of the conveying roller way 2, and the cross beam 10 travels on the guide rails 12 through the travelling wheels 11.
As an embodiment, the lifting mechanism includes a servo motor 13 mounted on the cross beam 10 and a ball screw 14 connected to the servo motor 13.
In one embodiment, the electromagnet 5 is disposed at the lower end of the ball screw 14.
As an embodiment, the cross beam 10 is further provided with a cross beam positioning pin 15 for positioning the cross beam 10, and the cross beam 10 can be controlled to travel on the guide rail 12 by removing the cross beam positioning pin 15.
Referring to fig. 3, the method for removing the scale on the surface of the cold-corrected steel plate mainly includes the following steps:
A. detecting the thickness of the steel plate straightened by the cold straightening machine through a laser range finder 7 arranged above an outlet of the cold straightening machine 1, and sending a detection signal to the PLC;
B. according to the measured thickness, the PLC controls the servo motor 13 to operate to enable the electromagnet 5 to descend to a corresponding height (see a broken line shear head in figure 1), and the electromagnet 5 is normally at the highest non-working position;
C. when the head of the running strip steel triggers the front grating 8, the PLC controls the electromagnet 5 to be electrified, and iron oxide scales on the surface of the steel plate are absorbed and adsorbed on the electromagnet 5;
D. after the tail of the running strip steel triggers the rear grating 9, the PLC controls the electromagnet 5 to lose power and starts demagnetization, and iron oxide scales adsorbed on the electromagnet 5 fall into the collection box 3.
Further comprising step E: when the iron oxide scale in the collecting box 3 is fully collected or the iron oxide scale needs to be poured, only the cross beam positioning pin 15 needs to be pulled out, the cross beam 10 and the electromagnet 5 are moved away from the upper part of the collecting box 3, at the moment, the collecting box 3 is lifted and transported to a waste hopper through a travelling crane, and the iron oxide scale is poured.
Through multiple tests on the spot, the iron scale on the surface of the steel plate after cold straightening is in a powder state, namely, the iron scale cannot be adhered to the straightening roller, and the iron scale is in a powder state through the extrusion of the straightening roller. Therefore, the iron scale is sucked away from the surface of the steel plate by the electromagnet 5, after the steel plate is moved, the adsorbed iron scale is automatically dropped into the collecting box 3 below through the power loss and demagnetization of the electromagnet 5, and the environment is not polluted because purging is not needed, so that the normal work of the steel plate surface inspection instrument after cold straightening and the normal operation of the steel plate number spraying machine are ensured, the scratch defect of the surface of the steel plate after cold straightening is eliminated, and the steel plate surface inspection instrument is noiseless, dust-free and environment-friendly.
It should be understood by those skilled in the art that the above embodiments are only for illustrating the present invention and are not to be used as a limitation of the present invention, and that changes and modifications to the above described embodiments are within the scope of the claims of the present invention as long as they are within the spirit and scope of the present invention.
Claims (4)
1. The utility model provides a cold steel sheet surface oxidation iron sheet clearing device of rectifying, locates cold machine export the place ahead, its characterized in that: comprises a collecting box arranged between conveying roller ways, upright posts arranged at two sides of the conveying roller ways, a traveling mechanism arranged on the upright posts, a lifting mechanism arranged on the traveling mechanism, an electromagnet arranged at the bottom of the lifting mechanism, a laser range finder arranged above an outlet of a cold straightening machine, a front grating and a rear grating respectively arranged at the front side and the rear side of the electromagnet, and a PLC for receiving detection signals of the laser range finder and the front grating and the rear grating and controlling the operation of the lifting mechanism and the electromagnet,
the walking mechanism comprises a cross beam, walking wheels arranged on two sides of the cross beam, a guide rail arranged along the direction of the conveying roller way, the cross beam walks on the guide rail through the walking wheels,
the lifting mechanism comprises a servo motor arranged on the cross beam and a ball screw connected with the servo motor,
the electromagnet is arranged at the lower end of the ball screw.
2. The device for removing the scale on the surface of the cold-corrected steel plate according to claim 1, wherein: and the cross beam is also provided with a cross beam positioning pin.
3. A removing method for the cold-corrected steel sheet surface scale removing apparatus according to claim 1 or 2, characterized by comprising the steps of:
A. detecting the thickness of the steel plate straightened by the cold straightening machine through a laser range finder arranged above an outlet of the cold straightening machine, and sending a detection signal to the PLC;
B. according to the measured thickness, the PLC controls the servo motor to operate so that the electromagnet descends to a corresponding height;
C. when the head of the running strip steel triggers the front grating, the PLC controls the electromagnet to be electrified, and iron oxide scales on the surface of the steel plate are absorbed and adsorbed on the electromagnet;
D. after the tail of the running strip steel triggers the rear grating, the PLC controls the electromagnet to lose power and starts demagnetization, and iron oxide scales adsorbed on the electromagnet fall into the collection box.
4. A cleaning method according to claim 3, further comprising step E: and (3) pulling out the positioning pin of the cross beam, moving the cross beam and the electromagnet away from the upper part of the collecting box, hoisting the collecting box to a waste hopper through a travelling crane, and pouring the iron oxide scale.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710903323.5A CN109570246B (en) | 2017-09-29 | 2017-09-29 | Device and method for removing oxide scale on surface of cold-corrected steel plate |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710903323.5A CN109570246B (en) | 2017-09-29 | 2017-09-29 | Device and method for removing oxide scale on surface of cold-corrected steel plate |
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| Publication Number | Publication Date |
|---|---|
| CN109570246A CN109570246A (en) | 2019-04-05 |
| CN109570246B true CN109570246B (en) | 2020-12-18 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201710903323.5A Active CN109570246B (en) | 2017-09-29 | 2017-09-29 | Device and method for removing oxide scale on surface of cold-corrected steel plate |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN112387785A (en) * | 2020-09-29 | 2021-02-23 | 南京钢铁股份有限公司 | Shearing control method for preventing surface damage of die table steel |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH07236909A (en) * | 1994-02-28 | 1995-09-12 | Nippon Steel Corp | Method for controlling vacuum arc descaling by magnetic field and device therefor |
| CN204448260U (en) * | 2014-12-23 | 2015-07-08 | 鞍钢股份有限公司 | A kind of can the device of clearing and retrieving belt steel surface iron powder |
| CN204817352U (en) * | 2015-07-24 | 2015-12-02 | 武汉理工大学 | Cinder cleaning device |
| CN205165369U (en) * | 2015-10-16 | 2016-04-20 | 武汉钢铁(集团)公司 | Black strip surface oxidation iron sheet cleaning device |
-
2017
- 2017-09-29 CN CN201710903323.5A patent/CN109570246B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH07236909A (en) * | 1994-02-28 | 1995-09-12 | Nippon Steel Corp | Method for controlling vacuum arc descaling by magnetic field and device therefor |
| CN204448260U (en) * | 2014-12-23 | 2015-07-08 | 鞍钢股份有限公司 | A kind of can the device of clearing and retrieving belt steel surface iron powder |
| CN204817352U (en) * | 2015-07-24 | 2015-12-02 | 武汉理工大学 | Cinder cleaning device |
| CN205165369U (en) * | 2015-10-16 | 2016-04-20 | 武汉钢铁(集团)公司 | Black strip surface oxidation iron sheet cleaning device |
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| CN109570246A (en) | 2019-04-05 |
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