CN105983583B - A kind of throwing steel method of constant width machine outlet pinch roll - Google Patents
A kind of throwing steel method of constant width machine outlet pinch roll Download PDFInfo
- Publication number
- CN105983583B CN105983583B CN201610485464.5A CN201610485464A CN105983583B CN 105983583 B CN105983583 B CN 105983583B CN 201610485464 A CN201610485464 A CN 201610485464A CN 105983583 B CN105983583 B CN 105983583B
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- Prior art keywords
- pinch roll
- slab
- outlet
- constant width
- pressure
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B37/00—Control devices or methods specially adapted for metal-rolling mills or the work produced thereby
- B21B37/16—Control of thickness, width, diameter or other transverse dimensions
- B21B37/22—Lateral spread control; Width control, e.g. by edge rolling
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B37/00—Control devices or methods specially adapted for metal-rolling mills or the work produced thereby
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B37/00—Control devices or methods specially adapted for metal-rolling mills or the work produced thereby
- B21B37/58—Roll-force control; Roll-gap control
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B2261/00—Product parameters
- B21B2261/02—Transverse dimensions
- B21B2261/06—Width
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B2265/00—Forming parameters
- B21B2265/12—Rolling load or rolling pressure; roll force
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B2271/00—Mill stand parameters
- B21B2271/02—Roll gap, screw-down position, draft position
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Control Of Metal Rolling (AREA)
Abstract
The present invention relates to technical field of steel rolling, more particularly to a kind of throwing steel method of constant width machine outlet pinch roll, including：The gap values between rollers of outlet pinch roll are obtained, and obtain the thickness value of slab；The gap values between rollers of control outlet pinch roll are more than 30~60mm of thickness of slab；Slab is sent into entrance pinch roll, control slab enters to walk stop mode in constant width machine；When the head of slab is by outlet pinch roll 0.5m, the pressure for controlling outlet pinch roll is 200~300KN；When a mouthful pinch roll throwing steel is made in gap values between rollers 10~50mm time controls smaller than the thickness of slab that the roll-force of outlet pinch roll is less than 10~50KN and exports pinch roll.The throwing steel method of constant width machine outlet provided in an embodiment of the present invention pinch roll, improves the throwing steel precision of constant width machine outlet pinch roll, is advantageous to the accurate transmission of follow-up slab, and the accurate control of slab tail width, ensure that steel rolling quality.
Description
Technical field
The present invention relates to technical field of steel rolling, more particularly to a kind of throwing steel method of constant width machine outlet pinch roll.
Background technology
What the correct throwing steel of constant width machine outlet pinch roll tracked to slab afterbody establishes extremely important, constant width machine outlet pinch
Roller throws steel position and the accurate transmission control that deviation will directly affect slab occurs, is embodied in：Because the tracking of slab afterbody is different
Often resulting in afterbody edger roll short stroke execution exception causes tail width abnormal.All the time, constant width machine outlet how is improved to pinch
The throwing steel precision that roller throws steel is a difficulties, throws the accurate transmission that steel precision will be directly connected to follow-up slab, is slab
The key of tail width control.At present, the means that constant width machine outlet pinch roll throws steel precision are not gone out to be now able to effectively improve also.
The content of the invention
The embodiment of the present invention exports the throwing steel method of pinch roll by providing a kind of constant width machine, and it is fixed in the prior art to solve
Wide machine outlet pinch roll throws the low technical problem of steel precision, is advantageous to the accurate transmission of follow-up slab, and slab tail width
Accurate control, improve steel rolling quality.
The embodiments of the invention provide a kind of throwing steel method of constant width machine outlet pinch roll, the outlet pinch roll is by hydraulic pressure
Cylinder drives, and slab enters from the entrance pinch roll, is dished out from the outlet pinch roll, methods described includes：
The gap values between rollers of the outlet pinch roll are obtained, and obtain the thickness value of the slab；
The gap values between rollers of the outlet pinch roll are controlled to be more than 30~60mm of thickness of the slab；
The slab is sent into the entrance pinch roll, controls the slab to enter to walk stop mode in the constant width machine；
When the outlet pinch roll 0.5m is passed through on the head of the slab, the pressure for controlling the outlet pinch roll is
200~300KN；
When the roll-force of the outlet pinch roll is less than the gap values between rollers of 10~50KN and the outlet pinch roll than the plate
The outlet pinch roll is controlled to throw steel during the small 10~50mm of the thickness of base.
Further, when the slab enters to walk stop mode in the constant width machine, the speed of the slab is less than
1.33m/s。
Further, when the slab enters to walk stop mode in the constant width machine, the step pitch of the slab operation is 260
~400mm.
Further, when the slab carries out fixed width action in the constant width machine, the moment of torsion of motor in the constant width machine
More than 20KN.
Further, when the slab carries out fixed width action in the constant width machine, tup pats institute in the constant width machine
The number for stating slab is more than 5 times.
Further, the gap values between rollers for obtaining the outlet pinch roll, including：
The stroke of hydraulic cylinder is measured by magnetic scale, the outlet pinch roll is obtained by the stroke of the hydraulic cylinder indirectly
Gap values between rollers.
Further, the precision of the magnetic scale is 2 microns.
Further, the preparation method of the pressure of the outlet pinch roll is：
The hydraulic cylinder piston lateral area is multiplied by using the pressure value of the hydraulic cylinder piston side and draws first pressure, is utilized
The pressure value of the hydraulic cylinder bar side is multiplied by the hydraulic cylinder piston rod lateral area and draws second pressure, the first pressure and the
The difference of two pressure is the pressure of the outlet pinch roll.
Further, the pressure value of the hydraulic cylinder piston side is detected using first pressure sensor.
Further, the pressure value of the hydraulic cylinder bar side is detected using second pressure sensor.
One or more technical schemes provided in an embodiment of the present invention, at least possess following beneficial effect or advantage：
1st, the throwing steel method of constant width machine outlet provided in an embodiment of the present invention pinch roll, the gap values between rollers of control outlet pinch roll
More than 30~60mm of thickness of slab, when the head of slab is by outlet pinch roll 0.5m, the pressure of control outlet pinch roll
For 200~300KN, the gap values between rollers that 10~50KN and exported pinch roll are less than when the roll-force of outlet pinch roll are thicker than slab
Spend small 10~50mm time controls and make mouthful pinch roll and throw a steel, by the gap values between rollers to exporting pinch roll, export the pressure of pinch roll with
And the gap values between rollers of outlet pinch roll when throwing steel are set, the throwing steel precision of constant width machine outlet pinch roll is improved, is advantageous to
The accurate transmission of follow-up slab, and the accurate control of slab tail width, ensure that steel rolling quality.
2nd, the throwing steel method of constant width machine outlet provided in an embodiment of the present invention pinch roll, controls the speed of slab to be less than
1.33m/s, slab low-speed stable in constant width machine is run, is easy to slab to carry out fixed width operation in constant width machine.
3rd, the throwing steel method of constant width machine outlet provided in an embodiment of the present invention pinch roll, control slab enter in constant width machine
It is 260~400mm to walk the step pitch run during stop mode, and tup is patted the number of slab and is more than 5 times in constant width machine, ensure that slab
Fixed width effect.
Brief description of the drawings
Fig. 1 is the throwing steel method flow diagram that constant width machine provided in an embodiment of the present invention exports pinch roll.
Embodiment
The embodiment of the present invention exports the throwing steel method of pinch roll by providing a kind of constant width machine, and it is fixed in the prior art to solve
Wide machine outlet pinch roll throws the low technical problem of steel precision, is advantageous to the accurate transmission of follow-up slab, and slab tail width
Accurate control, improve steel rolling quality.
Referring to Fig. 1, the embodiments of the invention provide a kind of throwing steel method of constant width machine outlet pinch roll, outlet pinch roll by
Driven by Hydraulic Cylinder, slab enter from entrance pinch roll, and from outlet, pinch roll is dished out, and methods described includes：
Step 10, the gap values between rollers for obtaining outlet pinch roll, and obtain the thickness value of slab.Obtain the roller of outlet pinch roll
Seam value, including：The stroke of hydraulic cylinder is measured by magnetic scale, obtains exporting the roll gap of pinch roll indirectly by the stroke of hydraulic cylinder
Value, the precision of magnetic scale is 2 microns.
Step 20, the gap values between rollers of control outlet pinch roll are more than 30~60mm of thickness of slab.
Step 30, slab is sent into entrance pinch roll, control slab enters to walk stop mode in constant width machine.
When slab enters to walk stop mode in constant width machine, the speed of slab is less than 1.33m/s, and the step pitch of slab operation is
260~400mm.
Step 40, when slab head by outlet pinch roll 0.5m when, control outlet pinch roll pressure be 200~
300KN.Wherein, tup pats the number of slab more than 5 times in constant width machine.
The pressure for controlling outlet pinch roll is 200~300KN.The number that tup pats slab in constant width machine is used more than 5 times
In the fixed width effect for ensureing slab.
The preparation method of pressure for exporting pinch roll is：Hydraulic cylinder piston side is multiplied by using the pressure value of hydraulic cylinder piston side
Area draws first pressure, and being multiplied by hydraulic cylinder piston rod lateral area using the pressure value of hydraulic cylinder bar side draws second pressure, the
The difference of one pressure and second pressure is to export the pressure of pinch roll.The hydraulic cylinder is detected using first pressure sensor to live
The pressure value of side is filled in, the pressure value of hydraulic cylinder bar side is detected using second pressure sensor.
When slab carries out fixed width action in constant width machine, the moment of torsion of motor in constant width machine is controlled to be more than 20KN.
Step 50, when outlet pinch roll roll-force be less than 10~50KN and export pinch roll gap values between rollers it is thicker than slab
Spend small 10~50mm time controls and make a mouthful pinch roll throwing steel.
Pass through the roll gap of the outlet pinch roll when gap values between rollers to exporting pinch roll, the pressure of outlet pinch roll and throwing steel
Value is set, and for improving the throwing steel precision of constant width machine outlet pinch roll, is advantageous to the accurate transmission of follow-up slab, and plate
The accurate control of base tail width, ensure that steel rolling quality.
The throwing steel method for exporting pinch roll to constant width machine provided by the invention with reference to specific embodiment illustrates：
Embodiment 1
Step 101, the gap values between rollers for obtaining outlet pinch roll, and obtain the thickness value of slab.Wherein, outlet is obtained to pinch
The gap values between rollers of roller, including：The stroke of hydraulic cylinder is measured by magnetic scale, obtains exporting pinch roll indirectly by the stroke of hydraulic cylinder
Gap values between rollers, the precision of magnetic scale is 2 microns.Step 201, the gap values between rollers of control outlet pinch roll are more than the thickness 40mm of slab.Step
Rapid 301, slab is sent into entrance pinch roll, control slab enters to walk stop mode in constant width machine.Slab enters in constant width machine
When walking stop mode, the speed of slab is 1.30m/s, and the step pitch of slab operation is 300mm.Step 401, the head process when slab
When exporting pinch roll 0.5m, the pressure for control outlet pinch roll be 250KN, and the number of tup beating slab is 8 times in constant width machine.
Wherein, the preparation method for exporting the pressure of pinch roll is：Hydraulic cylinder piston side is multiplied by using the pressure value of hydraulic cylinder piston side
Product draws first pressure, and being multiplied by hydraulic cylinder piston rod lateral area using the pressure value of hydraulic cylinder bar side draws second pressure, first
The difference of pressure and second pressure is to export the pressure of pinch roll.Utilize first pressure sensor detection hydraulic cylinder piston side
Pressure value, the pressure value of hydraulic cylinder bar side is detected using second pressure sensor.When slab carries out fixed width action in constant width machine,
The moment of torsion for controlling motor in constant width machine is 40KN.Step 501, when outlet pinch roll roll-force be less than 40KN and outlet pinch roll
Gap values between rollers 30mm time controls smaller than the thickness of slab make mouthful pinch roll and throw a steel.
Embodiment 2
Step 102, the gap values between rollers for obtaining outlet pinch roll, and obtain the thickness value of slab.Wherein, outlet is obtained to pinch
The gap values between rollers of roller, including：The stroke of hydraulic cylinder is measured by magnetic scale, obtains exporting pinch roll indirectly by the stroke of hydraulic cylinder
Gap values between rollers, the precision of magnetic scale is 2 microns.Step 202, the gap values between rollers of control outlet pinch roll are more than the thickness 50mm of slab.Step
Rapid 302, slab is sent into entrance pinch roll, control slab enters to walk stop mode in constant width machine.Slab enters in constant width machine
When walking stop mode, the speed of slab is 1.25m/s, and the step pitch of slab operation is 380mm.Step 402, the head process when slab
When exporting pinch roll 0.5m, the pressure for control outlet pinch roll be 220KN, and the number of tup beating slab is 10 in constant width machine
It is secondary.Wherein, the preparation method for exporting the pressure of pinch roll is：Hydraulic cylinder piston side is multiplied by using the pressure value of hydraulic cylinder piston side
Area draws first pressure, and being multiplied by hydraulic cylinder piston rod lateral area using the pressure value of hydraulic cylinder bar side draws second pressure, the
The difference of one pressure and second pressure is to export the pressure of pinch roll.Utilize first pressure sensor detection hydraulic cylinder piston side
Pressure value, utilize second pressure sensor detection hydraulic cylinder bar side pressure value.Slab carries out fixed width action in constant width machine
When, the moment of torsion for controlling motor in constant width machine is 50KN.Step 502, when outlet pinch roll roll-force be less than 45KN and outlet clip
Send the gap values between rollers 40mm time controls smaller than the thickness of slab of roller to make mouthful pinch roll and throw steel.
One or more technical schemes provided in an embodiment of the present invention, at least possess following beneficial effect：
The throwing steel method of constant width machine outlet provided in an embodiment of the present invention pinch roll, the gap values between rollers of control outlet pinch roll are big
In 30~60mm of thickness of slab, when the head of slab is by outlet pinch roll 0.5m, the pressure for controlling outlet pinch roll is
200~300KN, when the roll-force of outlet pinch roll is less than thickness of the gap values between rollers of 10~50KN and exported pinch roll than slab
Small 10~50mm time controls make mouthful pinch roll and throw a steel, by the gap values between rollers to exporting pinch roll, export pinch roll pressure and
The gap values between rollers of outlet pinch roll when throwing steel are set, and the throwing steel precision of constant width machine outlet pinch roll are improved, after being advantageous to
The accurate transmission of continuous slab, and the accurate control of slab tail width, ensure that steel rolling quality.
The throwing steel method of constant width machine outlet provided in an embodiment of the present invention pinch roll, controls the speed of slab to be less than 1.33m/
S, slab low-speed stable in constant width machine is run, is easy to slab to carry out fixed width operation in constant width machine.
The throwing steel method of constant width machine outlet provided in an embodiment of the present invention pinch roll, control slab enter to walk in constant width machine
The step pitch run during stop mode is 260~400mm, and tup is patted the number of slab and is more than 5 times in constant width machine, ensure that slab
Fixed width effect.
It should be noted last that above embodiment is merely illustrative of the technical solution of the present invention and unrestricted,
Although the present invention is described in detail with reference to example, it will be understood by those within the art that, can be to the present invention
Technical scheme modify or equivalent substitution, without departing from the spirit and scope of technical solution of the present invention, it all should cover
Among scope of the presently claimed invention.
Claims (10)
1. a kind of throwing steel method of constant width machine outlet pinch roll, the outlet pinch roll is by Driven by Hydraulic Cylinder, and slab is from inlet clip
Send roller to enter, dished out from the outlet pinch roll, it is characterised in that methods described includes：
The gap values between rollers of the outlet pinch roll are obtained, and obtain the thickness value of the slab；
The gap values between rollers of the outlet pinch roll are controlled to be more than 30~60mm of thickness of the slab；
The slab is sent into the entrance pinch roll, controls the slab to enter to walk stop mode in the constant width machine；
When the outlet pinch roll 0.5m is passed through on the head of the slab, control the pressure of the outlet pinch roll for 200~
300KN；
When the roll-force of the outlet pinch roll is less than the gap values between rollers of 10~50KN and the outlet pinch roll than the slab
The outlet pinch roll is controlled to throw steel during the small 10~50mm of thickness.
2. the throwing steel method of constant width machine outlet as claimed in claim 1 pinch roll, it is characterised in that the slab is described fixed
When entering to walk stop mode in wide machine, the speed of the slab is less than 1.33m/s.
3. the throwing steel method of constant width machine outlet as claimed in claim 2 pinch roll, it is characterised in that the slab is described fixed
When entering to walk stop mode in wide machine, the step pitch of the slab operation is 260~400mm.
4. the throwing steel method of constant width machine outlet as claimed in claim 3 pinch roll, it is characterised in that the slab is described fixed
When fixed width action is carried out in wide machine, the moment of torsion of motor is more than 20KN in the constant width machine.
5. the throwing steel method of constant width machine outlet as claimed in claim 4 pinch roll, it is characterised in that the slab is described fixed
When fixed width action is carried out in wide machine, tup pats the number of the slab more than 5 times in the constant width machine.
6. the throwing steel method of the constant width machine outlet pinch roll as described in any one of Claims 1 to 5, it is characterised in that described to obtain
The gap values between rollers of the outlet pinch roll are obtained, including：
The stroke of hydraulic cylinder is measured by magnetic scale, obtains the roll gap of the outlet pinch roll indirectly by the stroke of the hydraulic cylinder
Value.
7. the throwing steel method of constant width machine as claimed in claim 6 outlet pinch roll, it is characterised in that the precision of the magnetic scale is
2 microns.
8. as described in any one of Claims 1 to 5 constant width machine outlet pinch roll throwing steel method, it is characterised in that it is described go out
The preparation method of the pressure of mouthful pinch roll is：
The hydraulic cylinder piston lateral area is multiplied by using the pressure value of the hydraulic cylinder piston side and draws first pressure, using described
The pressure value of hydraulic cylinder bar side is multiplied by the hydraulic cylinder piston rod lateral area and draws second pressure, the first pressure and the second pressure
The difference of power is the pressure of the outlet pinch roll.
9. the throwing steel method of constant width machine outlet as claimed in claim 8 pinch roll, it is characterised in that sensed using first pressure
Device detects the pressure value of the hydraulic cylinder piston side.
10. the throwing steel method of constant width machine outlet as claimed in claim 9 pinch roll, it is characterised in that passed using second pressure
Sensor detects the pressure value of the hydraulic cylinder bar side.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201610485464.5A CN105983583B (en) | 2016-06-28 | 2016-06-28 | A kind of throwing steel method of constant width machine outlet pinch roll |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201610485464.5A CN105983583B (en) | 2016-06-28 | 2016-06-28 | A kind of throwing steel method of constant width machine outlet pinch roll |
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| CN105983583A CN105983583A (en) | 2016-10-05 |
| CN105983583B true CN105983583B (en) | 2017-11-28 |
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| CN106583497A (en) * | 2016-12-13 | 2017-04-26 | 山东钢铁股份有限公司 | Control method for pressure of clamping and conveying roller of strip steel coiler |
| CN106734239B (en) * | 2016-12-14 | 2018-12-14 | 北京首钢股份有限公司 | Base head and tail width control method and device and constant width machine among a kind of constant width machine |
| CN107159717B (en) * | 2017-06-09 | 2019-04-12 | 首钢京唐钢铁联合有限责任公司 | A kind of constant width machine control method |
| CN113877968B (en) * | 2020-07-01 | 2023-12-12 | 宝山钢铁股份有限公司 | Method for preventing slipping of width-fixing machine |
| CN111872135A (en) * | 2020-08-05 | 2020-11-03 | 攀钢集团西昌钢钒有限公司 | Fixed width press and rolling control method thereof |
| CN114558897B (en) * | 2022-02-28 | 2024-03-19 | 首钢京唐钢铁联合有限责任公司 | Rhythm control method of width-fixing machine |
| CN114618891B (en) * | 2022-04-06 | 2023-08-18 | 山东钢铁集团日照有限公司 | Control method for solving problem of area blockage of slab width-fixing machine |
| CN115446126B (en) * | 2022-08-31 | 2024-02-13 | 鞍钢股份有限公司 | Steel biting and throwing method for hot rolling fixed-width press |
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