CN110508625A - On-line Control cooling device and method for middle small-caliber hot rolling seamless steel - Google Patents
On-line Control cooling device and method for middle small-caliber hot rolling seamless steel Download PDFInfo
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- CN110508625A CN110508625A CN201910897361.3A CN201910897361A CN110508625A CN 110508625 A CN110508625 A CN 110508625A CN 201910897361 A CN201910897361 A CN 201910897361A CN 110508625 A CN110508625 A CN 110508625A
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- 238000001816 cooling Methods 0.000 title claims abstract description 181
- 229910000831 Steel Inorganic materials 0.000 title claims abstract description 123
- 239000010959 steel Substances 0.000 title claims abstract description 123
- 238000000034 method Methods 0.000 title claims abstract description 45
- 238000005098 hot rolling Methods 0.000 title claims abstract description 10
- 230000007246 mechanism Effects 0.000 claims abstract description 57
- 238000004519 manufacturing process Methods 0.000 claims abstract description 20
- 230000005540 biological transmission Effects 0.000 claims description 15
- 230000008878 coupling Effects 0.000 claims description 7
- 238000010168 coupling process Methods 0.000 claims description 7
- 238000005859 coupling reaction Methods 0.000 claims description 7
- 239000000498 cooling water Substances 0.000 claims description 5
- 238000009826 distribution Methods 0.000 claims description 4
- 230000003028 elevating effect Effects 0.000 claims description 3
- 238000005096 rolling process Methods 0.000 claims description 3
- 238000005452 bending Methods 0.000 abstract description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 12
- 238000010586 diagram Methods 0.000 description 8
- 239000007921 spray Substances 0.000 description 6
- 238000005507 spraying Methods 0.000 description 5
- 230000000694 effects Effects 0.000 description 3
- 238000011835 investigation Methods 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 230000002411 adverse Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000000265 homogenisation Methods 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
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
- B21B37/74—Temperature control, e.g. by cooling or heating the rolls or the product
-
- 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
- B21B45/02—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 lubricating, cooling, or cleaning
- B21B45/0203—Cooling
- B21B45/0209—Cooling devices, e.g. using gaseous coolants
- B21B45/0215—Cooling devices, e.g. using gaseous coolants using liquid coolants, e.g. for sections, for tubes
-
- 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
- B21B45/02—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 lubricating, cooling, or cleaning
- B21B45/0203—Cooling
- B21B45/0209—Cooling devices, e.g. using gaseous coolants
- B21B45/0215—Cooling devices, e.g. using gaseous coolants using liquid coolants, e.g. for sections, for tubes
- B21B2045/0227—Cooling devices, e.g. using gaseous coolants using liquid coolants, e.g. for sections, for tubes for tubes
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Heat Treatment Of Articles (AREA)
Abstract
A kind of On-line Control cooling device and method for middle small-caliber hot rolling seamless steel, its device includes the multiple groups cooling device for being arranged between rollgang, being made of multiple annular jet cooling devices, each annular jet cooling device is connected on equipment body frame by tilting mechanism, the entrance of cooling device has the constraint guiding mechanism being made of constraint roll, constrains the upper and lower position of guiding mechanism and constrains the adjustable of pilot hole type.The present apparatus enables steel pipe successively to pass through each cooling device by the bending of the constraint rectifiable steel pipe of guiding mechanism, guarantees that production is gone on smoothly；Steel pipe is axial concentric with annular jet cooling in cooling procedure, keeps steel pipe cooling uniform；Different-diameter steel pipe on-line cooling can be met, it is applied widely；Steel pipe is not required to cooling device can be made to leave conveyor roller using tilting mechanism when line traffic control is cold, and high-temperature steel tube is avoided to toast annular jet cooling device.
Description
Technical field
It is especially a kind of to exist for middle small-caliber hot rolling seamless steel the present invention relates to hot rolled seamless steel tube production technology
Line traffic control cooling device and method.
Background technique
In seamless steel tube production, carrying out control cooling to seamless steel pipe is the important process hand for being related to steel structure property
Section.Seamless steel pipe is cooling to be divided into offline cooling and On-line Control cooling.It is offline cooling because process energy consumption higher cost, efficiency are lower
And replaced gradually being cooled down by On-line Control.
The patent specification of Patent No. ZL201610933168.7 discloses a kind of cooling use of hot rolled seamless steel tube control
Annular jet cooling device, the inner surface of the annular jet cooling device (as shown in Figure 1) have evenly distributed in the circumferential direction
Nozzle, the jet direction of nozzle are 50~80 ° with steel pipe axial angle towards the forward direction of steel pipe traffic direction or reverse, annular
Jet stream cooling device has water inlet, and water inlet is connect by adjusting valve group with segregated collection pipe, segregated collection pipe and adjusting valve group
For to water spray flow and pressure be adjusted.When the device is cooled down for seamless steel pipe control, according to cooling requirement, it can incite somebody to action
Multiple annular jet cooling device configurations realize that the On-line Control of seamless steel pipe is cooling, cooling effect on steel pipe operation roller-way
It is relatively good.According to its patent specification record, the cooling device be suitable for outer diameter 200mm to 460mm, wall thickness 10mm to 60mm it is big
The On-line Control of caliber seamless steel pipe is cooling, and this cooling device is such as individually used for wall thickness and is less than 200mm less than 10mm, outer diameter
Middle small-caliber seamless steel pipe on-line cooling can encounter following technical problems:
The length of middle small-caliber seamless steel pipe is often up to tens meters, and in process of production, steel pipe is after stretch-reducing mill
Can have certain curvature, not can guarantee in subsequent on-line cooling it is concentric with annular jet cooling device, it is cooling uniform
Property is also just more difficult to control；Meanwhile because outer diameter of steel pipes size is smaller, thickness specification is relatively thin, cause it more sensitive to temperature fluctuation,
Inhomogeneous cooling is even to cause flexibility of steel pipe to aggravate in turn and easily, and even resulting in production can not be successfully progress.So making merely
With this small-bore seamless steel pipe of annular jet cooling device centering carry out On-line Control cooling it is infeasible, with this annular
Jet stream cooling device carries out small-bore seamless steel pipe and carries out On-line Control cooling, it is necessary to small-caliber seamless steel pipe steel pipe in solution
Buckling problem when on-line cooling.
Application No. is 201410786324.2 Chinese patent specifications to disclose a kind of steel pipe cooling device, which is
Multiple water-spraying control portions are set in cooling water tank, and water spray portion inner cylinder has multiple hole for water sprayings, the cooling sprayed by hole for water spraying
Water cools down steel pipe.Steel pipe guide part is set before and after cooling water tank, which expanded by straight tube and taper
Pipe is opened to connect and compose.If matching centering small-caliber seamless steel pipe with this guiding mechanism with above-mentioned annular jet cooling device
It is cooling to carry out On-line Control, there are two technical problems: first is that this steel pipe guiding mechanism structure is simple, steel pipe is extended there through,
It not can guarantee steel pipe and keep concentric with annular jet cooling device in cooling procedure, just not can guarantee cooling uniformity yet；
Second is that because in small-caliber seamless steel pipe after stretch-reducing mill there are certain curvature, be unable to ensure and pass through guiding mechanism,
Once being obstructed, the continuous operation of whole pipe production line will affect.
Summary of the invention
In view of the above-mentioned problems existing in the prior art, the present invention provides a kind of exists for middle small-caliber hot rolling seamless steel
Line traffic control cooling device and method, to solve to carry out small-caliber seamless steel pipe On-line Control using above-mentioned annular jet cooling device
Cooling existing tube bending problem.
Provided by the present invention for the On-line Control cooling device of middle small-caliber hot rolling seamless steel, including it is arranged in tension
Reducing mill exports the multiple groups cooling device on rollgang, and (particular number is according to different steel pipes by multiple for every group of cooling device
Cooling technique requires to determine) annular jet cooling device composition, annular jet cooling device is by tilting mechanism (for when seamless
Cooling device is left to the cooling position in conveyor roller region when being without the use of Controlled cooling process during steel pipe's production) connection
Onto equipment body frame；The entrance of every group of cooling device has constraint guiding mechanism；The constraint guiding mechanism includes being used for structure
At steel tube confinement guiding pass, by two constraint roll or three constraint roll along steel pipe longitudinal center line circumferentially array distribution；
Constraint roll is driven by transmission device and be can be rotated, and the speed of service of revolving speed and steel pipe, which matches, (guarantees that steel pipe cooling procedure is smooth
Advance), transmission device is made of servo motor, shaft coupling and connecting shaft, and servo motor passes through shaft coupling and connecting shaft and (master
It is dynamic) constraint roll connects；Constraint roll is driven by the elevating mechanism of hydraulic motor driving rotation, can adjust constraint guiding mechanism pass
Size and upper and lower position make the bore of pass and steel pipe match, axial to keep concentric with annular jet cooling device.
The tilting mechanism is made of invertible head, swivel joint, bracket and hydraulic system；The bracket is fixed on equipment master
On body frame, swivel joint is rack-mount, and invertible head is fixedly connected with swivel joint, and swivel joint passes through sparge pipe and ring
Shape jet stream cooling device is fixedly connected, and when seamless steel tube production process is without the use of Controlled cooling process, is driven by hydraulic system
Dynamic invertible head rotation drives the rotation of annular jet cooling device by swivel joint, leaves the cooling in steel pipe transmission roller-way region
Position；It needs to return to the cold of steel pipe transmission roller-way region using again annular jet cooling device is inverted when Controlled cooling process
But position.
The cooling method of On-line Control, packet are carried out with above-mentioned On-line Control cooling device centering small-caliber hot rolling seamless steel
Include following steps:
1) the annular jet cooling device of cooling device is gone to the cooling position of steel pipe transmission roller-way by tilting mechanism；
Keep the center line of annular jet cooling device consistent with the center line of Grooves of Stretch Reducing Mill；
2) according to outer diameter of steel pipes, conveyor roller is adjusted to the height adapted to steel pipe, the pact of adjustment constraint guiding mechanism
Beam roller, the constraint guiding pass size for forming constraint roll match with outer diameter of steel pipes, and the outer surface of constraint roll and steel pipe is tangent；
The upper and lower position that constraint guiding mechanism is adjusted by lifting device makes constraint guiding pass and annular jet cooling device keep same
The heart；The revolving speed that constraint roll is adjusted by transmission device, is consistent it with roller table speed；
3) according to steel pipe rolling technique, the flow and pressure of single annular jet cooling device water spray is set, calculated corresponding
The unlatching quantity of cooling device；
4) run pipe production line, steel pipe passes through constraint guiding mechanism and cooling dress through conveyor roller after stretch reducing
It sets and realizes that On-line Control is cooling；
5) it after the completion of cooling procedure, if production process is without the use of Controlled cooling process, is filled using tilting mechanism by cooling
It sets and digs, leave conveyor roller, switch to air-cooled technique production.
The beneficial effects of the present invention are:
1, the present invention adds before and after each group cooling device being made of annular jet cooling device is made of constraint roll
Constraint guiding mechanism, and constraint roll formed constraint guiding pass size and upper and lower position it is adjustable, being bent for steel pipe can be made
To correction, steel pipe is enable successively to pass through cooling device, guarantees going on smoothly for production；
2, the present invention can make steel pipe is axial in cooling procedure to protect with annular jet cooling device by constraining guiding mechanism
It holds with one heart, thus keep steel pipe cooling uniformly, technique requirement of the small-caliber seamless steel pipe to cooling uniformity in satisfaction.
3, the size of the constraint guiding mechanism in the present invention, constraint guiding pass can be adjusted according to the diameter of steel pipe
It is whole, it is applied widely to adapt to the constraint Directed cooling of different-diameter steel pipe.
4, the annular jet cooling device that uses of the present invention, takes the jet impulse type of cooling, can be improved cooling rate and
Cooling uniformity；By segregated collection pipe and adjust valve group can the techniques such as spray flow to annular jet cooling device and pressure
Parameter carries out flexible modulation, so that temperature in seamless steel pipe On-line Control cooling procedure is precisely controlled, further increases
Cooling effect improves product quality.
5, when production process is without the use of Controlled cooling process, the present invention can be such that cooling device leaves using tilting mechanism
Conveyor roller avoids high-temperature steel tube baking annular jet cooling device bring adverse effect.
Detailed description of the invention
Fig. 1 is the schematic diagram of existing annular jet cooling device；
Fig. 2 is the seamless steel pipe On-line Control cooling technique arrangement schematic diagram of the embodiment of the present invention 1；
Fig. 3 is the schematic diagram for the constraint roll that different caliber seamless steel pipes constrain guiding mechanism in the embodiment of the present invention 1, wherein
The working state figure of constraint roll when Fig. 3 (a) is for larger caliber seamless steel pipe, Fig. 3 (b) are for compared with small-caliber seamless steel pipe
When constraint roll working state figure；
Fig. 4 is the schematic diagram for the constraint roll that different caliber seamless steel pipes constrain guiding mechanism in the embodiment of the present invention 2, wherein
The working state figure of constraint roll when Fig. 4 (a) is for larger caliber seamless steel pipe, Fig. 4 (b) are for compared with small-caliber seamless steel pipe
When constraint roll working state figure；
Fig. 5 is the structural schematic diagram for constraining roller drive arrangement；
Fig. 6 is the structural schematic diagram of tilting mechanism in Fig. 1；
Fig. 7 is 2 seamless steel pipe On-line Control cooling technique arrangement schematic diagram of the embodiment of the present invention；
Fig. 8 is 3 seamless steel pipe On-line Control cooling technique arrangement schematic diagram of the embodiment of the present invention.
Symbol description in figure: 1, stretch-reducing mill, 2, conveyor roller, 3, annular jet cooling device, 4, constraint Guiding machine
Structure, 401, (constraint of two rollers) constraint rod, 402, (constraint of three rollers) constraint rod, 5, seamless steel pipe, 6, lifting device, 7, transmission
Device, 701, servo motor, 702, shaft coupling, 703, connecting shaft, 8, tilting mechanism, 801, invertible head, 802 swivel joints,
803, bracket, 9, sparge pipe, 10, equipment body frame.
Specific embodiment
With reference to the accompanying drawings and examples, the invention will be further described.
Following embodiment be 20# to material, the seamless steel pipe that specification is 141.3 × 12.9mm carries out online after subtracting
It is cooling.
Embodiment 1
5 On-line Control cooling technique of the present embodiment seamless steel pipe arrangement is as shown in Fig. 2, cooling by 24 annular jets
3 two, device are divided into 12 to (each pair of be fixedly connected integral) for a pair, by 12 pairs of annular jet cooling devices three to for
One group is divided into four groups, is respectively arranged on the conveyor roller 2 in 1 exit of stretch-reducing mill, every group of cooling device inlet and goes out
It is respectively arranged a constraint guiding mechanism 4 at mouthful, totally five constraint guiding mechanisms.The cooling dress of the annular jet of every group of cooling device
It sets and is connected on equipment body frame 10 by tilting mechanism 8.
The annular jet cooling device 3 (for the prior art) is as shown in Figure 1, its inner surface is disposed with along the circumferential direction
The highly dense nozzle of four rows of even ordered arrangement, the jet direction in injection stream direction towards the forward direction of steel pipe traffic direction or reverse,
Spray ring outer surface is provided with water inlet (not shown), is connect by adjusting valve group (not shown) with segregated collection pipe (not shown),
The flow and pressure of water spray are adjusted by manifold and adjusting valve group, hydraulic pressure adjustable range is 0.2~0.8MPa, water
Amount adjustable range is 20~110m3/h。
As shown in Fig. 3 (a) and Fig. 3 (b), the constraint guiding mechanism of the embodiment include along steel pipe longitudinal center line circumferentially
Two constraint roll 401 of array distribution；Constraint roll is driven by transmission device 7 and be can be rotated, the speed of service phase of revolving speed and steel pipe
Matching, to guarantee that steel pipe cooling procedure is smoothly advanced.As shown in figure 5, the transmission device of constraint roll is by servo motor 701, shaft coupling
Device 702 and connecting shaft 703 are constituted, and servo motor is connected by shaft coupling and connecting shaft with active constraint roller；Constraint roll is by hydraulic
The elevating mechanism (6) of motor driving rotation drives size and the upper and lower position of adjustable steel tube confinement guiding pass, make pass with
The bore of steel pipe matches, and corrects the bending of steel pipe.
As shown in fig. 6, the tilting mechanism 8 of every group of cooling device is by invertible head 801, swivel joint 802, bracket 803 and liquid
Pressure system composition (not shown)；Wherein bracket is fixed on equipment body frame 10, and swivel joint is rack-mount, invertible head
It is fixedly connected with swivel joint, swivel joint is fixedly connected by sparge pipe 9 with annular jet cooling device.When seamless steel pipe is raw
When production process is without the use of Controlled cooling process, by hydraulic system driving invertible head rotation, invertible head is by swivel joint and matches
Water pipe drives the rotation of annular jet cooling device, leaves the cooling position in steel pipe transmission roller-way region；It needs to cool down using control
Annular jet cooling device is inverted again when technique, returns to the cooling position in steel pipe transmission roller-way region.
The cooling of steel pipe On-line Control is carried out using the above equipment, is sequentially included the following steps:
Step 1: control tilting mechanism overturns annular jet cooling device to the cooling position of steel pipe transmission roller-way, makes ring
The center line of shape jet stream cooling device is consistent with the center line of stretch-reducing mill；
Step 2: according to outer diameter of steel pipes, conveyor roller being adjusted to setting height, extremely by constraint guiding mechanism pass adjustment
Match with outer diameter of steel pipes, the center line in constraint mechanism hole, Grooves of Stretch Reducing Mill and annular jet cooling device is made to keep one
It causes；
Step 2: according to outer diameter of steel pipes, conveyor roller being adjusted to the height adapted to steel pipe, adjustment constraint guiding mechanism
Constraint roll, make constraint roll formed constraint guiding pass size match with outer diameter of steel pipes, the outer surface of constraint roll and steel pipe
It is tangent；The upper and lower position that constraint guiding mechanism is adjusted by lifting device makes constraint guiding pass and annular jet cooling device
Keep concentric；The revolving speed that constraint roll is adjusted by transmission device, is consistent it with roller table speed；
Step 3: according to steel pipe rolling technique, the cooling water flow that single annular jet cooling device is arranged is 80m3/h、
Cooling water pressure is 0.45MPa, calculates the unlatching quantity of corresponding cooling device；
Step 4: by temperature of steel pipe control at 680 DEG C, steel pipe passes through constraint Guiding machine through conveyor roller after stretch reducing
Structure and cooling device carry out on-line cooling；
Step 5:, will using tilting mechanism when being without the use of Controlled cooling process such as production process after the completion of cooling procedure
Cooling device is dug, and conveyor roller is left, and switches to air-cooled technique production.
Embodiment 2
The present embodiment is as shown in fig. 7, its seamless steel pipe On-line Control cooling technique is arranged as, by 24 annular jets
Cooling device 3 two are divided into 12 to (each pair of to be fixedly connected integrally) for a pair, and 12 pairs of annular jet cooling devices are pressed
Three pairs are two groups of a component, and two pairs are four groups of a component, are respectively arranged in 2 region of conveyor roller in 1 exit of stretch-reducing mill,
Every group of cooling device inlet and exit are respectively arranged a constraint guiding mechanism 4, totally six constraint guiding mechanisms.Every group cold
But the annular jet cooling device of device is connected on equipment body frame 10 by tilting mechanism 8.
The cooling step of the On-line Control cooling technique equipment and On-line Control that the present embodiment uses is same as Example 1,
Unique difference is to constrain guiding mechanism constraint roll as shown in figure 4, by along three of steel pipe longitudinal center line circumferentially array distribution
Constraint roll 402 forms；The spraying hydraulic pressure adjustable range of annular jet cooling device is 0.2~0.8MPa, and runoff investigation range is
20~110m3/h。
Embodiment 3
The present embodiment is as shown in figure 8, its seamless steel pipe On-line Control cooling technique is arranged as, by 24 annular jets
Cooling device 3 two are divided into 12 to (each pair of to be fixedly connected integrally) for a pair, and 12 pairs of annular jet cooling devices are pressed
Two pairs are divided into six groups for one group, are respectively arranged in 2 region of conveyor roller in 1 exit of stretch-reducing mill, every group of cooling device enters
At mouthful and exit is respectively arranged a constraint guiding mechanism 4, totally seven constraint guiding mechanisms.The annular of every group of cooling device is penetrated
Flow cooling device is connected on equipment body frame 10 by tilting mechanism 8.
The cooling step of the On-line Control cooling technique equipment and On-line Control that the present embodiment uses is same as Example 1；
Unique difference is, the spraying hydraulic pressure adjustable range of annular jet cooling device is 0.2~0.8MPa, runoff investigation range is 20~
110m3/h。
The present embodiment increases constraint guiding mechanism in the sub-cooled area more sensitive to tube bending and annular jet is cold
But the quantitative proportion of device, advantageous steel pipe homogenization and the cooling production process of steadyization.
Claims (3)
1. a kind of On-line Control cooling device for middle small-caliber hot rolling seamless steel, which is characterized in that opened including being arranged in
Power reducing mill (1) exports the multiple groups cooling device on rollgang (2), and every group of cooling device is by multiple annular jet cooling devices
(3) it constitutes, annular jet cooling device (3) is connected on equipment body frame (10) by tilting mechanism (8)；Every group of cooling dress
The entrance set has constraint guiding mechanism (4)；The constraint guiding mechanism (4) include for constitute steel tube confinement guiding pass, by
Along two constraint roll (401) or three constraint roll (402) of steel pipe longitudinal center line circumferentially array distribution；Constraint roll is by being driven
Device (7) driving can be rotated, and the speed of service of revolving speed and steel pipe matches, and transmission device is by servo motor (701), shaft coupling
(702) it is constituted with connecting shaft (703), servo motor is connected by shaft coupling and connecting shaft with constraint roll；Constraint roll is by hydraulic horse
Up to elevating mechanism (6) driving of driving rotation, it can adjust size and the upper and lower position of constraint guiding mechanism pass, make pass and steel
The diameter of pipe matches, axial to keep concentric with annular jet cooling device.
2. the On-line Control cooling device according to claim 1 for middle small-caliber hot rolling seamless steel, feature exist
In the tilting mechanism (8) is made of invertible head (801), swivel joint (802), bracket (803) and hydraulic system；The branch
Frame is fixed on equipment body frame, and swivel joint is rack-mount, and invertible head is fixedly connected with swivel joint, swivel joint
It is fixedly connected by sparge pipe (9) with annular jet cooling device, when seamless steel tube production process is without the use of control bosher
When skill, by hydraulic system driving invertible head rotation, invertible head drives annular jet cooling device by swivel joint and sparge pipe
Rotation, leaves the cooling position on conveyor roller；It needs using again inverting annular jet cooling device when Controlled cooling process,
Return to the cooling position on conveyor roller.
3. using the small-bore heat of On-line Control cooling device centering for being used for middle small-caliber hot rolling seamless steel described in claim 1
It rolls seamless steel pipe and carries out the cooling method of On-line Control, which comprises the following steps:
1) the annular jet cooling device of cooling device is gone to by tilting mechanism by the cooling position on conveyor roller；Make annular
The center line of jet stream cooling device and the center line of Grooves of Stretch Reducing Mill are consistent；
2) according to outer diameter of steel pipes, conveyor roller is adjusted to the height being adapted with steel pipe, is led by lifting device adjustment constraint
To the constraint roll of mechanism, the constraint guiding pass size for forming constraint roll matches with outer diameter of steel pipes, constraint roll and steel pipe
Outer surface is tangent, while constraint guiding pass being made to keep concentric with annular jet cooling device；It is adjusted and is constrained by transmission device
The revolving speed of roller is consistent it with conveyor roller speed；
3) according to steel pipe rolling technique, the flow and pressure of single annular jet cooling device cooling water are set, calculated corresponding cold
But the unlatching quantity of device；
4) run pipe production line, steel pipe is real by constraint guiding mechanism and cooling device through conveyor roller after stretch reducing
Present line traffic control is cooling；
5) after the completion of cooling procedure, if production process is without the use of Controlled cooling process, using tilting mechanism by cooling device
Annular jet cooling device is dug, and conveyor roller is left, and steel pipe is switched to air-cooled technique and is produced.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910897361.3A CN110508625B (en) | 2019-10-17 | 2019-10-17 | Online control cooling device and method for small and medium caliber hot rolled seamless steel tube |
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|---|---|---|---|
| CN201910897361.3A CN110508625B (en) | 2019-10-17 | 2019-10-17 | Online control cooling device and method for small and medium caliber hot rolled seamless steel tube |
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| CN110508625B CN110508625B (en) | 2024-07-26 |
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