CN105887111A - Method and device for preventing strip steel from deviating - Google Patents
Method and device for preventing strip steel from deviating Download PDFInfo
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- CN105887111A CN105887111A CN201610294136.7A CN201610294136A CN105887111A CN 105887111 A CN105887111 A CN 105887111A CN 201610294136 A CN201610294136 A CN 201610294136A CN 105887111 A CN105887111 A CN 105887111A
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- sink
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- 229910000831 Steel Inorganic materials 0.000 title claims abstract description 76
- 239000010959 steel Substances 0.000 title claims abstract description 76
- 238000000034 method Methods 0.000 title claims abstract description 28
- 238000004140 cleaning Methods 0.000 claims abstract description 63
- 239000003513 alkali Substances 0.000 claims abstract description 30
- 238000012937 correction Methods 0.000 claims abstract description 19
- 238000005406 washing Methods 0.000 claims description 31
- 239000007921 spray Substances 0.000 claims description 28
- 239000006260 foam Substances 0.000 claims description 10
- 238000005187 foaming Methods 0.000 claims 1
- 239000007788 liquid Substances 0.000 abstract description 20
- 239000002518 antifoaming agent Substances 0.000 description 8
- 239000002699 waste material Substances 0.000 description 8
- 238000004519 manufacturing process Methods 0.000 description 4
- 238000003723 Smelting Methods 0.000 description 2
- 238000004458 analytical method Methods 0.000 description 2
- 238000000137 annealing Methods 0.000 description 2
- 238000005238 degreasing Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000005201 scrubbing Methods 0.000 description 2
- 238000001311 chemical methods and process Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005868 electrolysis reaction Methods 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23G—CLEANING OR DE-GREASING OF METALLIC MATERIAL BY CHEMICAL METHODS OTHER THAN ELECTROLYSIS
- C23G3/00—Apparatus for cleaning or pickling metallic material
- C23G3/02—Apparatus for cleaning or pickling metallic material for cleaning wires, strips, filaments continuously
- C23G3/025—Details of the apparatus, e.g. linings or sealing means
- C23G3/026—Details of the apparatus, e.g. linings or sealing means for guiding the objects
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
- B65H23/00—Registering, tensioning, smoothing or guiding webs
- B65H23/04—Registering, tensioning, smoothing or guiding webs longitudinally
- B65H23/26—Registering, tensioning, smoothing or guiding webs longitudinally by transverse stationary or adjustable bars or rollers
-
- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23G—CLEANING OR DE-GREASING OF METALLIC MATERIAL BY CHEMICAL METHODS OTHER THAN ELECTROLYSIS
- C23G3/00—Apparatus for cleaning or pickling metallic material
- C23G3/02—Apparatus for cleaning or pickling metallic material for cleaning wires, strips, filaments continuously
- C23G3/027—Associated apparatus, e.g. for pretreating or after-treating
-
- C—CHEMISTRY; METALLURGY
- C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
- C25F—PROCESSES FOR THE ELECTROLYTIC REMOVAL OF MATERIALS FROM OBJECTS; APPARATUS THEREFOR
- C25F1/00—Electrolytic cleaning, degreasing, pickling or descaling
- C25F1/02—Pickling; Descaling
- C25F1/04—Pickling; Descaling in solution
- C25F1/06—Iron or steel
-
- C—CHEMISTRY; METALLURGY
- C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
- C25F—PROCESSES FOR THE ELECTROLYTIC REMOVAL OF MATERIALS FROM OBJECTS; APPARATUS THEREFOR
- C25F7/00—Constructional parts, or assemblies thereof, of cells for electrolytic removal of material from objects; Servicing or operating
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Mechanical Engineering (AREA)
- Cleaning And De-Greasing Of Metallic Materials By Chemical Methods (AREA)
Abstract
The invention provides a method and a device for preventing strip steel from deviating, wherein the method comprises the following steps: receiving the convexity values of a steering roller and a sink roller in a cleaning section roller system, and reducing the cylinder deviation correction amount of the roller system according to the convexity values; receiving a preset tension value, and ensuring that the wrap angle of the strip steel and the cleaning section roller system is in a stable state according to the tension value; the turning roll and the sink roll are of double-spiral roll types; therefore, the technical problem of the deviation of the high-speed running strip steel in the cleaning section is solved by optimizing the convexity and surface structure of the sink roll and the steering roll, introducing a tension speed factor and establishing a cleaning section alkali liquid virtuous cycle system.
Description
Technical Field
The invention belongs to the technical field of steel smelting, and particularly relates to a method and a device for preventing strip steel from deviating.
Background
In the steel smelting process, the continuous annealing machine furnace is an important link of the production of cold-rolled strip steel, and comprises the following steps: pre-degreasing (alkali spray washing and alkali scrubbing), electrolytic degreasing, scrubbing and spray rinsing, in particular, oil and impurities on the surface of the strip steel are removed by alkali liquor with certain concentration by adopting a physical chemistry and electrolysis method, and then residual alkali liquor is removed by rinsing with clear water, so that preparation is made for a process section.
However, with the continuous development of the market, the product demand is larger and larger, the running speed of the continuous annealing furnace unit is continuously improved, but with the improvement of the running speed of the unit, the deviation phenomenon of the strip steel is caused in the cleaning section process due to the reasons of the reduction of the friction force between the strip steel and the unit and the like, so that the product quality is reduced.
Based on the above, there is a need for a method and a device for preventing the deviation of strip steel, so as to increase the number of strip steel products and ensure the product quality.
Disclosure of Invention
Aiming at the problems in the prior art, the embodiment of the invention provides a method and a device for preventing strip steel from deviating, which are used for solving the technical problem that the strip steel deviates in a cleaning section in the prior art during the production of the strip steel.
The invention provides a method for preventing strip steel from deviating, which comprises the following steps:
receiving the convexity values of a steering roller and a sink roller in a cleaning section roller system, and reducing the cylinder deviation correction amount of the roller system according to the convexity values;
receiving a preset tension value, and ensuring that the wrap angle of the strip steel and the cleaning section roller system is in a stable state according to the tension value; wherein,
the turning roll and the sink roll are of double-spiral roll type.
In the above scheme, the method further comprises: and controlling the oil content in the alkali liquor according to preset alkali liquor parameters to avoid generating foams.
In the above scheme, the cleaning section roller system comprises: a spray washing section steering roller, a spray washing section sink roller, an electrolytic cleaning section steering roller and an electrolytic cleaning section sink roller.
In the above scheme, the spray washing section steering roll comprises: the device comprises a first steering roller, a second steering roller, a third steering roller, a fourth steering roller and a fifth steering roller; wherein,
the convexity of the second steering roller is 2-8 mm, and the convexity of the fourth steering roller is 2-6 mm.
In the above scheme, the spray washing section sink roll comprises: a first sink roll, a second sink roll and a third sink roll; wherein,
the convexity of the first sinking roller and the convexity of the second sinking roller are 2-8 mm, and the convexity of the third sinking roller is 2-4 mm.
In the above scheme, the electrolytic cleaning section turning roll comprises: a sixth turning roll, a seventh turning roll and an eighth turning roll; wherein, the convexity of the sixth turning roll is 2-4 mm.
In the above scheme, the electrolytic cleaning section sink roll comprises: a fourth sink roll and a fifth sink roll; wherein the convexity of the fourth sinking roller and the convexity of the fifth sinking roller are 2-4 mm.
In the scheme, the thickness of the strip steel is more than or equal to 0.15 and less than or equal to 0.55mm, and the width of the strip steel is more than or equal to 730 and less than or equal to 1280 mm.
The invention also provides a device for preventing the deviation of the strip steel, which comprises:
the receiving module is used for receiving the convexity values and preset tension values of the steering roller and the sink roller in the cleaning section roller system;
the determining module is used for reducing the cylinder deviation correction amount of the roller system according to the convexity value and ensuring that the wrap angle of the strip steel and the cleaning section roller system is in a stable state according to the tension value; wherein, the turning roll and the sink roll are in a double-spiral roll shape.
In the above scheme, the determining module is further configured to control the oil content in the alkali liquor according to preset alkali liquor parameters, so as to avoid generating foam.
The invention provides a method and a device for preventing strip steel from deviating, wherein the method comprises the following steps: receiving the convexity values of a steering roller and a sink roller in a cleaning section roller system, and reducing the cylinder deviation correction amount of the roller system according to the convexity values; receiving a preset tension value, and ensuring that the wrap angle of the strip steel and the cleaning section roller system is in a stable state according to the tension value; the turning roll and the sink roll are of double-spiral roll types; therefore, the technical problem of the deviation of the high-speed running strip steel in the cleaning section is solved by optimizing the convexity and surface structure of the sink roll and the steering roll, introducing a tension speed factor and establishing a cleaning section alkali liquid virtuous cycle system.
Drawings
FIG. 1 is a schematic flow chart of a method for preventing strip steel from deviating according to an embodiment of the present invention;
fig. 2 is a schematic structural diagram of a device for preventing strip steel from deviating, provided by an embodiment of the invention.
Detailed Description
In order to solve the technical problem that the high-speed running strip steel deviates in a cleaning section, the invention provides a method and a device for preventing the strip steel from deviating, wherein the method comprises the following steps: receiving the convexity values of a steering roller and a sink roller in a cleaning section roller system, and reducing the cylinder deviation correction amount of the roller system according to the convexity values; receiving a preset tension value, and ensuring that the wrap angle of the strip steel and the cleaning section roller system is in a stable state according to the tension value; wherein, the turning roll and the sink roll are in a double-spiral roll shape.
The technical solution of the present invention is further described in detail by the accompanying drawings and the specific embodiments.
Example one
The embodiment provides a method for preventing strip steel from deviating, which comprises the following steps as shown in fig. 1:
and 110, receiving the convexity values of a steering roller and a sink roller in a cleaning section roller system, and reducing the cylinder deviation correction amount of the roller system according to the convexity values.
In the step, in order to improve the self-correcting capability of the roller system of the cleaning section and reduce the correcting amount of the high-speed running strip steel in the cleaning section. According to the principle of a roller effect, the convexity values of a steering roller and a sink roller in a roller system of a cleaning section are received, and the cylinder deviation correction amount of the roller system is reduced according to the convexity values.
Specifically, as shown in table 1, the cleaning section roller system includes: a spray washing section steering roller, a spray washing section sink roller, an electrolytic cleaning section steering roller and an electrolytic cleaning section sink roller. The spray washing section steering roller comprises: the device comprises a first steering roller, a second steering roller, a third steering roller, a fourth steering roller and a fifth steering roller; wherein, the spray washing section comprises: a spray washing section 1 and a spray washing section 2; the first steering roller, the second steering roller and the third steering roller are arranged in the No. 1 spray washing section; the fourth steering roller and the fifth steering roller are arranged in the No. 2 spray-washing section.
TABLE 1
The first steering roller, the third steering roller and the fifth steering roller are flat rollers; the second steering roller and the fourth steering roller are convexity rollers, the convexity of the second steering roller is 2-8 mm, and the convexity of the fourth steering roller is 2-6 mm.
Here, the spray section sink roll includes: a first sink roll, a second sink roll and a third sink roll; the first sinking roller and the second sinking roller are arranged in the No. 1 spray-washing section, and the third sinking roller is arranged in the No. 2 spray-washing section. The first sinking roller, the second sinking roller and the third sinking roller are convexity rollers, the convexity of the first sinking roller and the convexity of the second sinking roller are 2-8 mm, and the convexity of the third sinking roller is 2-4 mm.
Further, the electrolytic cleaning section turning roll includes: a sixth turning roll, a seventh turning roll and an eighth turning roll; the sixth turning roll is a convexity roll, and the convexity is 2-4 mm. The seventh steering roller and the eighth steering roller are flat rollers.
The electrolytic cleaning section sink roll includes: a fourth sink roll and a fifth sink roll; and the fourth sinking roller and the fifth sinking roller are both convex rollers, and the convexity is 2-4 mm.
In practical application, for a strip steel with the specification of 0.20 x 882, the pass band speed of a cleaning section is [500, 650], the actual deflection of the strip steel of a convexity roller at a third deflection correcting roller CPC3a can be controlled to be [ -26, +50.3], and the actual deflection of a flat roller is controlled to be [ -30, 20 ]; the deflection of the convexity roller at the fourth correction roller CPC4 is controlled to be [ -5.1, 5.7], and the deflection of the flat roller is controlled to be [ -3, 5 ].
For 0.20 x 882 specification strip steel, the pass band speed of the cleaning section is [500, 650], the cylinder deviation correction amount of the convexity roller at CPC3a is controlled to be [ 50.8, 41.6], and the cylinder deviation correction amount of the flat roller is controlled to be [ 97.3, 46.3 ]; after the crown roller is optimized at CPC4, the deviation correcting amount of the cylinder is controlled to be between-31.7 and 16.9, and the deviation correcting amount of the cylinder of the flat roller is controlled to be between-76 and 43.6.
In conclusion, the convexity roller can reduce the cylinder deviation correction of the CPC3a and the CPC4, but the actual deviation of the strip steel is not reduced, and the CPC3a starts to deviate at 550 m/min.
Therefore, in order to further reduce the actual running deviation of the strip, the friction coefficient between the roller and the strip is reduced by optimizing the surface structures of the sink roller and the steering roller to prevent the oil film in the alkali liquor from adhering to the surface of the roller in the embodiment. Specifically, the roll surfaces of the partial sink roll and the turning roll were set to be double-spiral roll surfaces, and the specific settings are shown in table 2.
TABLE 2
As shown in table 2, the roll surfaces of the first sinking roll, the second sinking roll, the third sinking roll, the fifth sinking roll and the seventh turning roll are in a double-spiral groove structure.
And 111, receiving a preset tension value, and ensuring that the wrap angle of the strip steel and the cleaning section roller system is in a stable state according to the tension value.
In this step, when the running speed of the strip steel is lower than 350m/min, the reduction of the friction force between the strip steel and the roller is not obvious, that is, the strip steel can be in a normal running state. However, as the running speed of the strip increases, the centrifugal force along the normal direction of the strip increases, which is equivalent to reducing the friction force between the strip and the rollers. Specifically, under the condition of high speed, the centripetal force required for keeping the strip steel in uniform motion is increased, and the friction force between the strip steel and the roller is reduced. Without increasing the tension, this necessarily results in a reduction in the wrap angle of the strip and the rolls to maintain the desired centripetal force. The smaller the wrap angle is, the more easily the strip steel is deviated.
Here, it is necessary to receive a preset tension value according to which the wrap angle of the strip and the cleaning section roll system is ensured to be in a stable state. The tension value increases as the speed of the washing section increases.
For example, when a sink roll with the diameter of 1000mm is selected as an analysis object, and the speed of a steel strip with a certain specification is increased from 350m/min to 470m/min, the theoretical centripetal force should be increased by 0.062KN, which is equivalent to the effective tension being reduced by 0.062KN, and the value is used as a speed factor to act on the steel strip.
And 112, controlling the oil content in the alkali liquor according to preset alkali liquor parameters to avoid generating foams.
In the step, the No. 1 spray washing tank body is polluted quickly in production, a large amount of foam is often generated, and the foam can greatly reduce the maximum sliding friction force between the strip steel and the roller, so that the strip steel is deviated.
Therefore, in order to avoid the generation of a large amount of foam, the lye parameters are optimized, and the oil content in the lye is controlled according to the preset lye parameters. Wherein the lye parameters comprise: waste liquid discharge amount, defoaming agent addition amount and liquid pouring valve opening degree. Specifically, as shown in table 3:
TABLE 3
As shown in table 3, the lye circulation tanks included three: a first alkali liquor circulating tank, a second alkali liquor circulating tank and a third alkali liquor circulating tank; the waste liquid discharge time of the first alkali liquor circulation tank is opened for 30s and closed for 100 s; the addition time of the defoaming agent is 35s for opening and 200s for closing; the opening time of the liquid pouring valve is 100s of opening and 200s of closing. The waste liquid discharge time of the second alkali liquid circulation tank is 10s after being opened, and 300s after being closed; the addition time of the defoaming agent is 10s for opening and 200s for closing; the opening time of the liquid pouring valve is 100s of opening and 200s of closing. The waste liquid discharge time of the third alkali liquor circulation tank is 10s after being started and 500s after being stopped; the time for adding the defoaming agent is 10s for opening and 500s for closing.
According to the method for preventing the strip steel from deviating, the technical problem that the strip steel running at a high speed deviates in the cleaning section is solved by optimizing the convexity and the surface structure of the sink roll and the steering roll, introducing the tension speed factor and establishing the cleaning section alkaline liquid virtuous cycle system, and the deviation of the strip steel running at a high speed in the cleaning section is effectively prevented, so that the product quality and the yield are improved.
Example two
Corresponding to the first embodiment, the embodiment further provides a device for preventing the strip steel from deviating, as shown in fig. 2, the device comprises: a receiving module 21 and a determining module 22; wherein,
the receiving module 21 is used for receiving the convexity values and preset tension values of the steering roller and the sink roller in the cleaning section roller system; the determining module 22 is configured to reduce the cylinder deviation correction amount of the roller system according to the crown value, and ensure that the wrap angle of the strip steel and the cleaning section roller system is in a stable state according to the tension value.
Specifically, in order to improve the self-correcting capability of the roller system at the cleaning section and reduce the correcting amount of the strip steel running at high speed at the cleaning section. According to the principle of roller effect, the receiving module 21 receives the convexity values of a steering roller and a sink roller in a roller system of a cleaning section, and the determining module 21 reduces the cylinder correction amount of the roller system according to the convexity values.
Specifically, as shown in table 1, the cleaning section roller system includes: a spray washing section steering roller, a spray washing section sink roller, an electrolytic cleaning section steering roller and an electrolytic cleaning section sink roller. The spray washing section steering roller comprises: the device comprises a first steering roller, a second steering roller, a third steering roller, a fourth steering roller and a fifth steering roller; wherein, the spray washing section comprises: a spray washing section 1 and a spray washing section 2; the first steering roller, the second steering roller and the third steering roller are arranged in the No. 1 spray washing section; the fourth steering roller and the fifth steering roller are arranged in the No. 2 spray-washing section.
TABLE 1
The first steering roller, the third steering roller and the fifth steering roller are flat rollers; the second steering roller and the fourth steering roller are convexity rollers, the convexity of the second steering roller is 2-8 mm, and the convexity of the fourth steering roller is 2-6 mm.
Here, the spray section sink roll includes: a first sink roll, a second sink roll and a third sink roll; the first sinking roller and the second sinking roller are arranged in the No. 1 spray-washing section, and the third sinking roller is arranged in the No. 2 spray-washing section. The first sinking roller, the second sinking roller and the third sinking roller are convexity rollers, the convexity of the first sinking roller and the convexity of the second sinking roller are 2-8 mm, and the convexity of the third sinking roller is 2-4 mm.
Further, the electrolytic cleaning section turning roll includes: a sixth turning roll, a seventh turning roll and an eighth turning roll; the sixth turning roll is a convexity roll, and the convexity is 2-4 mm. The seventh steering roller and the eighth steering roller are flat rollers.
The electrolytic cleaning section sink roll includes: a fourth sink roll and a fifth sink roll; and the fourth sinking roller and the fifth sinking roller are both convex rollers, and the convexity is 2-4 mm.
In practical application, for a strip steel with the specification of 0.20 x 882, the pass band speed of a cleaning section is [500, 650], the actual deflection of the strip steel of a convexity roller at a third deflection correcting roller CPC3a can be controlled to be [ -26, +50.3], and the actual deflection of a flat roller is controlled to be [ -30, 20 ]; the deflection of the convexity roller at the fourth correction roller CPC4 is controlled to be [ -5.1, 5.7], and the deflection of the flat roller is controlled to be [ -3, 5 ].
For 0.20 x 882 specification strip steel, the pass band speed of the cleaning section is [500, 650], the cylinder deviation correction amount of the convexity roller at CPC3a is controlled to be [ 50.8, 41.6], and the cylinder deviation correction amount of the flat roller is controlled to be [ 97.3, 46.3 ]; after the crown roller is optimized at CPC4, the deviation correcting amount of the cylinder is controlled to be between-31.7 and 16.9, and the deviation correcting amount of the cylinder of the flat roller is controlled to be between-76 and 43.6.
In conclusion, the convexity roller can reduce the cylinder deviation correction of the CPC3a and the CPC4, but the actual deviation of the strip steel is not reduced, and the CPC3a starts to deviate at 550 m/min.
Therefore, in order to further reduce the actual running deviation of the strip, the friction coefficient between the roller and the strip is reduced by optimizing the surface structures of the sink roller and the steering roller to prevent the oil film in the alkali liquor from adhering to the surface of the roller in the embodiment. Specifically, the roll surfaces of the partial sink roll and the turning roll were set to be double-spiral roll surfaces, and the specific settings are shown in table 2.
TABLE 2
As shown in table 2, the roll surfaces of the first sinking roll, the second sinking roll, the third sinking roll, the fifth sinking roll and the seventh turning roll are in a double-spiral groove structure.
Further, when the running speed of the strip steel is lower than 350m/min, the reduction of the friction force between the strip steel and the rollers is not obvious, that is, the strip steel can be in a normal running state. However, as the running speed of the strip increases, the centrifugal force along the normal direction of the strip increases, which is equivalent to reducing the friction force between the strip and the rollers. Specifically, under the condition of high speed, the centripetal force required for keeping the strip steel in uniform motion is increased, and the friction force between the strip steel and the roller is reduced. Without increasing the tension, this necessarily results in a reduction in the wrap angle of the strip and the rolls to maintain the desired centripetal force. The smaller the wrap angle is, the more easily the strip steel is deviated.
Here, the determining module 22 needs to receive a preset tension value, and according to the tension value, the wrap angle of the strip steel and the roll system of the cleaning section is ensured to be in a stable state. The tension value increases as the speed of the washing section increases.
For example, when a sink roll with the diameter of 1000mm is selected as an analysis object, and the speed of a steel strip with a certain specification is increased from 350m/min to 470m/min, the theoretical centripetal force should be increased by 0.062KN, which is equivalent to the effective tension being reduced by 0.062KN, and the value is used as a speed factor to act on the steel strip.
In addition, the No. 1 spray washing tank body is polluted quickly in production, a large amount of foam is often generated, and the foam can greatly reduce the maximum sliding friction force between the strip steel and the roller, so that the strip steel is deviated.
Therefore, in order to avoid generating a large amount of foam, the determination module 22 is further configured to: and controlling the oil content in the alkali liquor according to preset alkali liquor parameters. Wherein the lye parameters comprise: waste liquid discharge amount, defoaming agent addition amount and liquid pouring valve opening degree. Specifically, as shown in table 3:
TABLE 3
As shown in table 3, the lye circulation tanks included three: a first alkali liquor circulating tank, a second alkali liquor circulating tank and a third alkali liquor circulating tank; the waste liquid discharge time of the first alkali liquor circulation tank is opened for 30s and closed for 100 s; the addition time of the defoaming agent is 35s for opening and 200s for closing; the opening time of the liquid pouring valve is 100s of opening and 200s of closing. The waste liquid discharge time of the second alkali liquid circulation tank is 10s after being opened, and 300s after being closed; the addition time of the defoaming agent is 10s for opening and 200s for closing; the opening time of the liquid pouring valve is 100s of opening and 200s of closing. The waste liquid discharge time of the third alkali liquor circulation tank is 10s after being started and 500s after being stopped; the time for adding the defoaming agent is 10s for opening and 500s for closing.
The receiving module 21 and the determining module 22 provided in this embodiment can be implemented by a Central Processing Unit (CPU), a Digital Signal Processor (DSP), a Programmable logic Array (FPGA), and a Micro Control Unit (MCU) in the apparatus.
According to the device for preventing the strip steel from deviating, the technical problem that the strip steel running at a high speed deviates in the cleaning section is solved by optimizing the convexity and the surface structure of the sink roll and the steering roll, introducing the tension speed factor and establishing the cleaning section alkaline liquid virtuous cycle system, and the deviation of the strip steel running at a high speed in the cleaning section is effectively prevented, so that the product quality and the yield are improved.
The above description is only exemplary of the present invention and should not be taken as limiting the scope of the present invention, and any modifications, equivalents, improvements, etc. that are within the spirit and principle of the present invention should be included in the present invention.
Claims (10)
1. A method for preventing strip steel from deviating is characterized by comprising the following steps:
receiving the convexity values of a steering roller and a sink roller in a cleaning section roller system, and reducing the cylinder deviation correction amount of the roller system according to the convexity values;
receiving a preset tension value, and ensuring that the wrap angle of the strip steel and the cleaning section roller system is in a stable state according to the tension value; wherein,
the turning roll and the sink roll are of double-spiral roll type.
2. The method of claim 1, wherein the method further comprises: and controlling the oil content in the alkali liquor according to preset alkali liquor parameters to avoid generating foams.
3. The method of claim 1, wherein the cleaning section roll train comprises: a spray washing section steering roller, a spray washing section sink roller, an electrolytic cleaning section steering roller and an electrolytic cleaning section sink roller.
4. The method of claim 3, wherein the spray segment turning roll comprises: the device comprises a first steering roller, a second steering roller, a third steering roller, a fourth steering roller and a fifth steering roller; wherein,
the convexity of the second steering roller is 2-8 mm, and the convexity of the fourth steering roller is 2-6 mm.
5. The method of claim 3, wherein the spray section sink roll comprises: a first sink roll, a second sink roll and a third sink roll; wherein,
the convexity of the first sinking roller and the convexity of the second sinking roller are 2-8 mm, and the convexity of the third sinking roller is 2-4 mm.
6. The method of claim 3, wherein the electrolytic cleaning section turning roll comprises: a sixth turning roll, a seventh turning roll and an eighth turning roll; wherein, the convexity of the sixth turning roll is 2-4 mm.
7. The method of claim 3, wherein the electrolytic cleaning section sink roll comprises: a fourth sink roll and a fifth sink roll; wherein the convexity of the fourth sinking roller and the convexity of the fifth sinking roller are 2-4 mm.
8. The method of claim 3, wherein the strip has a thickness h 0.15-0.55 mm and a width w 730-1280 mm.
9. A device for preventing deviation of strip steel is characterized by comprising:
the receiving module is used for receiving the convexity values and preset tension values of the steering roller and the sink roller in the cleaning section roller system;
the determining module is used for reducing the cylinder deviation correction amount of the roller system according to the convexity value and ensuring that the wrap angle of the strip steel and the cleaning section roller system is in a stable state according to the tension value; wherein, the turning roll and the sink roll are in a double-spiral roll shape.
10. The apparatus of claim 9, wherein the determination module is further configured to control the oil content in the lye according to preset lye parameters to avoid foaming.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610294136.7A CN105887111B (en) | 2016-05-05 | 2016-05-05 | Method and device for preventing strip steel from deviating |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610294136.7A CN105887111B (en) | 2016-05-05 | 2016-05-05 | Method and device for preventing strip steel from deviating |
Publications (2)
| Publication Number | Publication Date |
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| CN105887111A true CN105887111A (en) | 2016-08-24 |
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| CN112024611A (en) * | 2020-07-30 | 2020-12-04 | 东北大学 | Tension deviation rectifying control method and device for pinch roll in thin strip continuous casting |
| CN117947493A (en) * | 2024-03-22 | 2024-04-30 | 江苏沙钢钢铁有限公司 | Electrolytic cleaning device and cleaning method for surface of non-oriented silicon steel strip steel |
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| CN112024611A (en) * | 2020-07-30 | 2020-12-04 | 东北大学 | Tension deviation rectifying control method and device for pinch roll in thin strip continuous casting |
| CN112024611B (en) * | 2020-07-30 | 2021-09-14 | 东北大学 | Tension deviation rectifying control method and device for pinch roll in thin strip continuous casting |
| CN117947493A (en) * | 2024-03-22 | 2024-04-30 | 江苏沙钢钢铁有限公司 | Electrolytic cleaning device and cleaning method for surface of non-oriented silicon steel strip steel |
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