CN108115002B - The method for improving tail part of band steel scroll quality - Google Patents
The method for improving tail part of band steel scroll quality Download PDFInfo
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- CN108115002B CN108115002B CN201611085852.0A CN201611085852A CN108115002B CN 108115002 B CN108115002 B CN 108115002B CN 201611085852 A CN201611085852 A CN 201611085852A CN 108115002 B CN108115002 B CN 108115002B
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- Prior art keywords
- strip
- flipper guide
- coiling machine
- pair
- band steel
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21C—MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES OR PROFILES, OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
- B21C47/00—Winding-up, coiling or winding-off metal wire, metal band or other flexible metal material characterised by features relevant to metal processing only
- B21C47/02—Winding-up or coiling
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21C—MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES OR PROFILES, OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
- B21C47/00—Winding-up, coiling or winding-off metal wire, metal band or other flexible metal material characterised by features relevant to metal processing only
- B21C47/34—Feeding or guiding devices not specially adapted to a particular type of apparatus
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- Mechanical Engineering (AREA)
- Winding, Rewinding, Material Storage Devices (AREA)
Abstract
The present invention provides a kind of methods for improving tail part of band steel scroll quality, it is based on the taking-up equipment after being arranged in Hot Rolling Mill, including the first coiling machine and the second coiling machine and a pair of first flipper guide that are sequentially arranged along the traffic direction of the strip and a pair of second flipper guide, the described method includes: when second coiling machine batches the strip: when the head of the strip reaches the pinch roll inlet of second coiling machine, the pair of second flipper guide being closed up to clamp the strip；Before the tail portion of the strip is transported from the last rack of the mm finishing mill unit, the pair of first flipper guide is closed up to clamp the strip.The present invention clamps strip using the flipper guide of upstream coiling machine, and the method for clamping strip simultaneously using more than two flipper guides improves the frictional force of flipper guide and steel edge portion whereby, guarantees that tail part of band steel is tauted, to improve the scroll quality of tail part of band steel.
Description
Technical field
The present invention relates to the methods that tail part of band steel scroll quality is improved in hot rolling technology.
Background technique
Coiling machine is the important equipment of hot rolling line, for hot-strip to be rolled into coil of strip.Coiling machine is located at finishing mill
It is last procedure of hot continuous rolling production line after group.Referring to Fig. 1 and 2, strip 1 is delivered to from mm finishing mill unit by roller-way 3 and is batched
Machine unit enters pinch roller 51 using the centering of flipper guide 41.The main function of pinch roller is to sting the steel stage to band on head
Steel applies certain clamping force, while implementing first time bending deformation to it；In tail portion, coil ing one applies strip stable
Tension, to guarantee good scroll quality.Three helps of Wrapping Roll 6 are bent strip, and strip is made tightly to wind coiling 7.Volume
Cylinder 7 applies tension to it, to ensure that scroll is up-to-standard after strip winding is upper.
To guarantee that serialization uninterruptedly produces, 2 to 3 coiling machines usually can be sequentially equipped on a hot rolling line
(such as Fig. 1, be configured with 3 coiling machines shown in 2), in this way when a coiling machine carries out unloading the operation of coil of strip, other
Coiling machine can work normally, to guarantee continuous production.As shown in Figure 1, 2, also each on subsequent two coiling machines to be equipped with
There are a pair of of flipper guide 42,43 and a pair of of pinch roller 52,53.
After strip is rolled into coil of strip, it may appear that some defects, such as overflow edge defect, flanging defect, side damage defect etc..
For example, referred to as overflow edge defect when the outer volume layer of coil of strip part protruding upward or downwardly projecting is more than certain standard；In the presence of excessive
During transportation, edge easily is caused to bend the coil of strip of side defect by the damage of driving fixture, referred to as flanging defect；Strip edge
Portion because flipper guide scrape or transportational process in occur it is damaged caused by defect be referred to as side damage defect.Overflow edge, flanging and side damage
Defect can seriously affect user's use, and may cause disconnected band accident when cold rolling continues production.So drawbacks described above is user
Unacceptable defect, it is necessary to defect part be cut off in finishing procedure, will also result in quality cost loss in this way.
Coiling process in the prior art is described with reference to Fig. 3 to 5.As shown in figure 3, to batch chain-drive section speed control rank
Section: in 11 crossing process of head of strip 1, roller-way 3, pinch roller 5, reel 7 are all made of speed control, and speed is slightly larger than strip
The speed of service.As shown in figure 4, for the tension force stage in the middle part of coiling machine: winding coiling when the head of strip 1 enters coiling machine
7 and torque rise to setting moment values after, the basic automatization computer of coiling machine just determine reel tension be successfully established,
Entirely establishing hypertension terminates, and subsequent reel is switched to Torque Control state, and coiling machine enters the middle part tension force stage.This
When, tension is provided by the reel 7 and the last rack 21 of mm finishing mill unit for batching unit, and pinch roller 5 hardly provides tension.Such as figure
Shown in 5, be tail portion coil ing one: after the tail portion of strip 1 12 is dished out by the last rack 21 of mm finishing mill unit, reel 7 switches immediately
For speed control, pinch roller 51 is Torque Control, and tension is provided jointly by reel 7 and pinch roller 5 at this time, until entire volume steel coil
Take end.
Fig. 7 and Fig. 9 is respectively from the coiling process schematic diagram overlooked shown in visual angle.In 52 coiling band steel 1 of the second coiling machine
When, as shown in fig. 7, a pair of second flipper guide 42 closes up when the head of strip 1 reaches the pinch roll inlet of the second coiling machine 52
(being respectively arranged at the second flipper guide of a pair 42 of 3 two sides of roller-way towards the center line movement of roller-way 3) is to clamp strip 1.
The second flipper guide of a pair 42 closed up makes the position centering into the strip 1 of the second coiling machine 52, to ensure that coil of strip
Scroll quality.Hereafter, after the tail portion of strip 1 enters the second coiling machine 52, in order to guarantee the normal operation of subsequent strip, one
(the second flipper guide of a pair 42 of 3 two sides of roller-way is respectively arranged at away from roller-way 3 to the second flipper guide 42 opening
The direction of heart line moves), to be returned to initial position.
In third 53 coiling band steel 1 of coiling machine, as shown in figure 9, when the head of strip 1 reaches the folder of third coiling machine 53
When sending roller entrance, a pair of of third flipper guide 43 close up (be respectively arranged at a pair of of third flipper guides 43 of 3 two sides of roller-way towards
The center line movement of roller-way 3) to clamp strip 1.A pair of of the third flipper guide 43 closed up makes the band into third coiling machine 53
The position centering of steel 1, to ensure that the scroll quality of coil of strip.Hereafter, when the tail portion of strip 1 enter third coiling machine 53 it
Afterwards, in order to guarantee that the normal operation of subsequent strip, a pair of of opening of third flipper guide 43 (are respectively arranged at the one of 3 two sides of roller-way
Third flipper guide 43 is moved away from the direction of the center line of roller-way 3), to be returned to initial position.
The shortcomings that capable of will become apparent from the prior art referring to Fig. 6.In tail portion coil ing one, the tail portion of strip 1 is by finish rolling
After unit end rack 21 is dished out, the strip of pinch roller 5 to magnetic tape trailer part loses tension, in relaxation, unstable state.Relaxation
Strip coiling when, be easy to produce overflow edge, flanging and side damage defect.
The prior art solves the problems, such as this using the method for roller-way lag: when the tail portion of strip is thrown by mm finishing mill unit end rack 21
After out, the speed for reducing roller-way 3 makes it below the speed of service of strip.Band is tightened by the frictional force of roller-way and strip lower surface
Steel improves the stability that tail part of band steel is run on roller-way.
But the above method still has following deficiency:
1) when Thin Strip Steel (such as thickness is less than or equal to strip of 4mm) batches, effect is poor: using the speed for reducing roller-way
The speed of service of strip is made it below, effect is preferable when Deformation in thick batches, but Thin Strip Steel is from heavy and light, strip following table and roller-way
Frictional force is small, and tail part of band steel cannot be tauted, and still in relaxation, unstable state, mass defect not can avoid.
2) influence the quality of strip lower surface: roller table speed is lower than strip speed, can not keep away between strip following table and roll surface
Exempt from the presence of friction, influences surface quality.In order to tighten Thin Strip Steel, it is necessary to increase the speed difference between roller-way and strip, but in this way
One, a possibility that causing surface defect, also will increase.
Summary of the invention
The object of the present invention is to provide a kind of stability that can be improved tail part of band steel and run on roller-way, reduce and overflow
While, flanging and while damage defect method.
The method of raising tail part of band steel scroll quality of the invention, the method is based on the volume after being arranged in Hot Rolling Mill
Equipment is taken, the taking-up equipment includes the first coiling machine and the second coiling machine being sequentially arranged along the traffic direction of the strip,
The first flipper guide of a pair for positioning the strip and a pair of second flipper guide are also respectively provided in roller-way two sides, described one
First coiling machine is separately positioned on along the traffic direction of the strip to the first flipper guide and the pair of second flipper guide
Before second coiling machine, which comprises when second coiling machine batches the strip: when the strip
When head reaches the pinch roll inlet of second coiling machine, the pair of second flipper guide is closed up to clamp the strip；
Before the tail portion of the strip is transported from the last rack of the mm finishing mill unit, preferably the strip tail portion reach described in
When the last rack of mm finishing mill unit, the pair of first flipper guide is closed up to clamp the strip.
Further, the method also includes: when second coiling machine batches the strip: when the tail of the strip
When portion is carried out the region where first flipper guide, the pair of first flipper guide is opened.
Further, the taking-up equipment further include along the strip traffic direction be arranged in second coiling machine it
Third coiling machine afterwards is provided with a pair for dividing column roller-way two sides for positioning the strip before the third coiling machine
Third flipper guide, the method also includes: when the third coiling machine batches the strip: when the arrival of the head of the strip
When the pinch roll inlet of the third coiling machine, the pair of third flipper guide is closed up to clamp the strip；In the band
Before the tail portion of steel is transported from the last rack of the mm finishing mill unit, the mm finishing mill unit preferably is reached in the tail portion of the strip
Last rack when, the pair of first flipper guide is closed up to clamp the strip.
Further, the method also includes: when the third coiling machine batches the strip: when the tail of the strip
When portion is carried out the region where first flipper guide, the pair of first flipper guide is opened.
Preferably, the thickness of the strip is less than or equal to 4mm.
The method of raising tail part of band steel scroll quality of the invention clamps strip using the flipper guide of upstream coiling machine, adopts
The method for clamping strip simultaneously with more than two flipper guides improves the frictional force of flipper guide and steel edge portion whereby, guarantees band
Steel tail portion is tauted, to improve the scroll quality of tail part of band steel.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of the taking-up equipment after being arranged in Hot Rolling Mill；
Fig. 2 is the schematic top plan view of Fig. 1；
Fig. 3 is the schematic diagram for batching the chain-drive section speed control stage of the prior art；
Fig. 4 is the schematic diagram in tension force stage in the middle part of the coiling machine of the prior art；
Fig. 5 is the schematic diagram for batching drive end unit coil ing one of the prior art；
Fig. 6 is the schematic diagram for generating defect in the stage shown in fig. 5；
Fig. 7 is to overlook the schematic diagram that the second coiling machine batches in the prior art shown in visual angle；
Fig. 8 is to overlook the schematic diagram that the second coiling machine batches in the present invention shown in visual angle；
Fig. 9 is to overlook the schematic diagram that the coiling machine of third in the prior art shown in visual angle batches；
Figure 10 is to overlook the schematic diagram that third coiling machine batches in the present invention shown in visual angle；
Figure 11 is the flow diagram of one embodiment of the present of invention；
Figure 12 is the flow diagram of another embodiment of the invention.
Specific embodiment
The method of raising tail part of band steel scroll quality of the invention is made into one with reference to the accompanying drawings and detailed description
The detailed description of step, but it is not as a limitation of the invention.
For ease of description, traffic direction of each coiling machine for including by the taking-up equipment after Hot Rolling Mill along strip
Successively it is known as the first coiling machine, the second coiling machine and third coiling machine, the first coiling machine, the second coiling machine and third will be arranged in
Each opposite side guide plate of column roller-way two sides is divided successively to be known as the along the traffic direction of strip for position strip before coiling machine
One flipper guide, the second flipper guide and third flipper guide.
As shown in Figure 11 and Fig. 8, the method for raising tail part of band steel scroll quality of the invention includes: in the second coiling machine 52
When coiling band steel 1: when the head of strip 1 reaches the pinch roll inlet of the second coiling machine 52 (such as by being arranged in volume Two
When the metal detector at the pinch roll inlet of machine 52 being taken to detect the head of strip), the second flipper guide 42 of a pair is closed up into (example
The second flipper guide 42 is such as controlled by hydraulic servo valve control system and hydraulic cylinder to close up) to clamp strip 1；In strip 1
Tail portion (such as is arranged in the pressure that the pressure-measuring head of mm finishing mill unit measures and meets certain item before transporting from the last rack of mm finishing mill unit
When part), the first flipper guide 41 of a pair is closed up and (such as controls the first side by hydraulic servo valve control system and hydraulic cylinder and leads
Plate 41 closes up) to clamp strip 1.
Comparison diagram 7 and Fig. 8, mm finishing mill unit last rack throw steel after, Fig. 7 in the prior art, only a pair second
Flipper guide 42 can give strip frictional force in clamping strip；And in the method for the invention of Fig. 8, a pair of second flipper guide 42
Strip is clamped jointly with the first flipper guide of a pair 41, can strip be given to provide frictional force, i.e., increased with the contact area of strip,
Its frictional force provided also will increase.As it can be seen that the method for raising tail part of band steel scroll quality of the invention, utilizes upstream coiling machine
(such as the first coiling machine is the upstream coiling machine of second and third coiling machine, the first and second coiling machines are third coiling machines
Upstream coiling machine) flipper guide clamp strip, due to clamping strip simultaneously using more than two flipper guides and be capable of increasing side
The contact area of guide plate and strip guarantees that tail part of band steel is tauted to improve the frictional force of flipper guide and steel edge portion, from
And improve the scroll quality of tail part of band steel.
Preferably, close up a pair of first flipper guide opportunity be the tail portion of strip reach mm finishing mill unit last rack it
When.In order to guarantee stability that tail part of band steel is run on roller-way, it is required that tail part of band steel be tightened up always it is enough to provide
Tension, it is therefore desirable to just the first flipper guide is closed up with clamping band before tail part of band steel is transported from the last rack of mm finishing mill unit
Steel tail portion, to guarantee the continuous offer of tension.But if prematurely close up the first flipper guide, such as in tail part of band steel
Just close up before into mm finishing mill unit, will cause the unnecessary abrasion to the first flipper guide and steel edge portion., whereas if closing
The opportunity for holding together the first flipper guide too late, such as after tail part of band steel throws steel by the last rack of mm finishing mill unit just closes up, then can make
Tail part of band steel is obtained to be in an unsure state for some time.It is therefore preferred that reaching the end of mm finishing mill unit in the tail portion of strip
When rack, the first flipper guide of a pair is closed up to clamp strip.
Hereafter, in the second 52 coiling band steel 1 of coiling machine, where the tail portion of strip 1 is carried out the first flipper guide 41
When region (such as being detected by metal detector), a pair of first flipper guide 41 is opened (such as pass through hydraulic efficiency servo-valve control
System processed and hydraulic cylinder control)；When the tail portion of strip 1 reaches the pinch roll inlet of the second coiling machine 52 (such as pass through gold
Belong to detector to detect), a pair of second flipper guide 42 is opened (such as controlled by hydraulic servo valve control system and hydraulic cylinder
System).
In addition, 2 and Figure 10, method of the invention further include in third 53 coiling band steel 1 of coiling machine referring to Fig.1: working as band
When the head of steel 1 reaches the pinch roll inlet of third coiling machine 53 (such as being detected by metal detector), by a pair of of third
Flipper guide 43 closes up to clamp strip 1 (such as controlling by hydraulic servo valve control system and hydraulic cylinder)；In the tail of strip 1
Before portion is transported from the last rack of mm finishing mill unit (such as detected by the pressure-measuring head of the last rack of mm finishing mill unit), preferably exist
When the tail portion of strip 1 reaches the last rack of mm finishing mill unit, the first flipper guide 41 of a pair is closed up (such as pass through hydraulic efficiency servo-valve
Control system and hydraulic cylinder control) to clamp strip 1.
When region where the tail portion of strip 1 is carried out the first flipper guide 41 hereafter, (such as by metal detector come
Detection), a pair of first flipper guide 41 is opened into (such as controlling by hydraulic servo valve control system and hydraulic cylinder)；Work as strip
When 1 tail portion reaches the pinch roll inlet of third coiling machine 53 (such as being detected by metal detector), by a pair of of third side
Guide plate 43 opens (such as controlling by hydraulic servo valve control system and hydraulic cylinder).
Comparison diagram 9 and Figure 10, after the last rack of mm finishing mill unit throws steel, Fig. 9 in the prior art, only a pair of of third
Flipper guide 43 can give strip frictional force in clamping strip；And in the method for the invention of Figure 10, a pair of of third flipper guide 43
Strip is clamped jointly with the first flipper guide of a pair 41, can strip be given to provide frictional force, i.e., increased with the contact area of strip,
Its frictional force provided also will increase.As it can be seen that the method for raising tail part of band steel scroll quality of the invention, utilizes upstream coiling machine
(such as the first coiling machine is the upstream coiling machine of second and third coiling machine, the second coiling machine is the upstream volume of third coiling machine
Take machine) flipper guide clamping strip, due to clamping strip simultaneously using more than two flipper guides and be capable of increasing flipper guide and band
The contact area of steel guarantees that tail part of band steel is tauted to improve the frictional force of flipper guide and steel edge portion, to improve
The scroll quality of tail part of band steel.
As described in background parts, Thin Strip Steel is lighter due to being self-possessed, by reducing rubbing to Thin Strip Steel for roller table speed generation
Wiping power is insufficient to allow Thin Strip Steel tail portion to tighten, therefore method of the invention is particularly suitable for Thin Strip Steels, for example, thickness is less than or equal to
The strip of 4mm.
Compared with the prior art, the method for raising tail part of band steel scroll quality of the invention, by increasing flipper guide and band
The contact area of steel edge, improves the frictional force of flipper guide and steel edge portion, to effectively improve tail part of band steel in roller
The stability run on road reduces overflow edge, flanging and side and damages defect；The quality for not influencing belt steel surface simultaneously, will not make band
Steel arch rises；And method of the invention is not needed to increase any hardware, not needed to original yet based entirely on existing hardware facility
Any mechanism on some production lines, which is transformed, can be completed.
The above specific embodiment is only exemplary embodiments of the present invention, it is impossible to be used in limits the present invention, the present invention
Protection scope be defined by the claims.Those skilled in the art can within the spirit and scope of the present invention, to this
Various modifications or equivalent replacements are made in invention, these modifications or equivalent replacement also should be regarded as being within the scope of the present invention.
Claims (7)
1. a kind of method for improving tail part of band steel scroll quality, the method are set based on batching after being arranged in Hot Rolling Mill
Standby, the taking-up equipment includes the first coiling machine and the second coiling machine being sequentially arranged along the traffic direction of the strip, in roller
Road two sides are also respectively provided with the first flipper guide of a pair for positioning the strip and a pair of second flipper guide, and the pair of the
One flipper guide and the pair of second flipper guide are separately positioned on first coiling machine and institute along the traffic direction of the strip
Before stating the second coiling machine, which is characterized in that the described method includes: when second coiling machine batches the strip:
When the head of the strip reaches the pinch roll inlet of second coiling machine, the pair of second flipper guide is closed up
To clamp the strip；
Before the tail portion of the strip is transported from the last rack of mm finishing mill unit, the pair of first flipper guide is closed up to clamp
The strip.
2. the method according to claim 1 for improving tail part of band steel scroll quality, which is characterized in that in the tail of the strip
When portion reaches the last rack of the mm finishing mill unit, the pair of first flipper guide is closed up to clamp the strip.
3. the method according to claim 1 for improving tail part of band steel scroll quality, which is characterized in that the method is also wrapped
It includes: when second coiling machine batches the strip:
When region where the tail portion of the strip is carried out first flipper guide, the pair of first flipper guide is beaten
It opens.
4. the method according to claim 1 for improving tail part of band steel scroll quality, which is characterized in that the taking-up equipment is also
Including the third coiling machine after being arranged in second coiling machine along the traffic direction of the strip, in the third coiling machine
It is provided with a pair of of the third flipper guide for dividing column roller-way two sides for positioning the strip before, the method also includes: in institute
When stating third coiling machine and batching the strip:
When the head of the strip reaches the pinch roll inlet of the third coiling machine, the pair of third flipper guide is closed up
To clamp the strip；
Before the tail portion of the strip is transported from the last rack of the mm finishing mill unit, by the pair of first flipper guide close up with
Clamp the strip.
5. the method according to claim 4 for improving tail part of band steel scroll quality, which is characterized in that in the tail of the strip
When portion reaches the last rack of the mm finishing mill unit, the pair of first flipper guide is closed up to clamp the strip.
6. the method according to claim 4 for improving tail part of band steel scroll quality, which is characterized in that the method is also wrapped
It includes: when the third coiling machine batches the strip:
When region where the tail portion of the strip is carried out first flipper guide, the pair of first flipper guide is beaten
It opens.
7. the method according to claim 1 to 6 for improving tail part of band steel scroll quality, which is characterized in that described
The thickness of strip is less than or equal to 4mm.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611085852.0A CN108115002B (en) | 2016-11-30 | 2016-11-30 | The method for improving tail part of band steel scroll quality |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611085852.0A CN108115002B (en) | 2016-11-30 | 2016-11-30 | The method for improving tail part of band steel scroll quality |
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| CN108115002A CN108115002A (en) | 2018-06-05 |
| CN108115002B true CN108115002B (en) | 2019-08-27 |
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| CN109675928B (en) * | 2018-12-21 | 2020-07-21 | 首钢京唐钢铁联合有限责任公司 | Strip steel coiling machine set tail breaking treatment method and device |
| CN112139258B (en) * | 2019-06-26 | 2022-10-21 | 宝山钢铁股份有限公司 | Control method for side guide plate of hot rolling coiler |
| CN112453065B (en) * | 2020-10-14 | 2023-03-21 | 首钢京唐钢铁联合有限责任公司 | Coiling control method and device |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0669582B2 (en) * | 1990-10-23 | 1994-09-07 | 石川島播磨重工業株式会社 | Side guide control method |
| GB2271071B (en) * | 1992-09-21 | 1996-05-01 | Ishikawajima Harima Heavy Ind | Guiding apparatus for roughing mill and method of guiding rolled product |
| CN103447353B (en) * | 2013-01-09 | 2016-03-16 | 番禺珠江钢管（连云港）有限公司 | The control device of hot continuous rolling wide flat steel guide plate at front side of recoiling machine and control method |
| TWI541081B (en) * | 2013-09-14 | 2016-07-11 | 中國鋼鐵股份有限公司 | Method for hot rolling steel slab |
| CN104525575B (en) * | 2014-12-12 | 2016-08-31 | 湖南华菱涟源钢铁有限公司 | Correction control method is led in a kind of hot-strip reels side |
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