CN108114994A - The device and method of iron sheet ash press-in are reduced during a kind of hot tandem production strip - Google Patents
The device and method of iron sheet ash press-in are reduced during a kind of hot tandem production strip Download PDFInfo
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- CN108114994A CN108114994A CN201611068432.1A CN201611068432A CN108114994A CN 108114994 A CN108114994 A CN 108114994A CN 201611068432 A CN201611068432 A CN 201611068432A CN 108114994 A CN108114994 A CN 108114994A
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- water
- side spray
- wetting system
- strip
- finishing mill
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B45/00—Devices for surface or other treatment of work, specially combined with or arranged in, or specially adapted for use in connection with, metal-rolling mills
- B21B45/02—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
- B21B45/0269—Cleaning
- B21B45/0275—Cleaning devices
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B1/00—Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations
- B21B1/22—Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations for rolling plates, strips, bands or sheets of indefinite length
- B21B1/24—Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations for rolling plates, strips, bands or sheets of indefinite length in a continuous or semi-continuous process
- B21B1/26—Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations for rolling plates, strips, bands or sheets of indefinite length in a continuous or semi-continuous process by hot-rolling, e.g. Steckel hot mill
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Cleaning And De-Greasing Of Metallic Materials By Chemical Methods (AREA)
- Cleaning By Liquid Or Steam (AREA)
Abstract
The device and method of iron sheet ash press-in are reduced when producing strip the present invention relates to a kind of hot tandem, equipment of the invention includes：The inlet side spray wetting system of finishing mill is two groups of side spray wetting systems for being located at finishing mill inlet, strip is purged；The exit side spray wetting system of finishing mill is one group of exit side spray wetting system being located at finishing mill outlet, strip is purged；Dedusting sprinkler is made of several Spray-nozzle for removing dust, is injected in the following table of strip；Dust block board is welded on finishing mill entrance before foreplate；Upper guide and guard harden structure welds one piece of composite plate on finishing mill entrance below foreplate, increase corrosion proof function.The present invention reduces foreign matter press-in belt steel surface by stopping and purging；Rust staining generation is eliminated by increasing corrosion proof function, is further reduced iron sheet ash press-in defect, improves the quality of belt steel product.
Description
Technical field
The invention belongs to steel rolling technologies, refer in particular to reduce setting for iron sheet ash press-in during a kind of hot tandem production strip
Standby and method.
Background technology
Hot-strip has foreign matter to drop in the operation of rolling on milling train, as shown in Figure 1, the foreign matter is pressed into band by milling train,
101 surfaces, since this foreign matter is only pressed into belt steel surface superficial, shape is called just as one layer of dust (shown in Fig. 1)
Iron sheet ash 102.It is caused by greasy dirt, dust, rust staining in milling train etc. drops, for this purpose, industry this iron sheet ash phenomenon occur
It is interior that such mass defect is known as iron sheet ash press-in, as shown in Fig. 2, the defect can be mounted on finishing mill in hot tandem
201 and the online detection instrument 202 rolled between machine 203 detect and identify.
Iron sheet ash press-in defect typically occurs in 100 meters of 100 meters of the head of strip and afterbody, intermediate less, and appears in
Strip upper table is more, and following table is few, the reason is that strip, when biting milling train and throwing steel leaves milling train, rolling mill vibration is big, easily makes oil
Dirt, dust, rust staining etc. drop.Each factory is typically to ensure that the quality of this block strip meets delivery by way of cutting and repairing
It is required that removed part is handled as useless plate, thus iron sheet ash press-in defect influence whether factory final lumber recovery and
Production cost.
Occur to reduce iron sheet ash, the theory that domestic and international producer all employs clean manufacturing goes to control, usually using fixed
Repair greasy dirt, dust, the rust staining on time manual cleaning rolling line in all milling trains, cleaning cycle is usually January 1 time.It is but this
It method heavy workload and produces little effect.
The content of the invention
The purpose of the present invention is to solve problem existing in the prior art, when a kind of hot tandem production strip is provided
The method for reducing iron sheet ash press-in.
The purpose of the present invention is what is be achieved through the following technical solutions：
A kind of equipment that iron sheet ash press-in is reduced during hot tandem production strip, it includes：
The inlet side spray wetting system of finishing mill is two groups of side spray wetting systems for being located at finishing mill inlet, and first group enters
Side spray wetting system is mounted on the outer end of the flipper guide of finishing mill at mouthful, and the entrance side sprayed is sprayed water at loop back roll to strip
Upper table is purged；On the inner end for the flipper guide that second group of inlet side spray wetting system is mounted on finishing mill, the rack of ejection
Inside water spray purges strip；
The exit side spray wetting system of finishing mill is one group of exit side spray wetting system being located at finishing mill outlet,
On the memorial archway side of finishing mill outlet, the exit side spray water sprayed purges strip；
Dedusting sprinkler is made of the Spray-nozzle for removing dust on foreplate under several outlets mounted at finishing mill outlet,
It is injected in the following table of strip；
Dust block board is welded on by metal component on the entrance of finishing mill entrance before foreplate, using stainless steel
It is made, the height of installation, which is subject to, does not influence inlet side-guiding-board opening, close and frame is thrown into, got；The front end of dust block board is curved
Folding, dust block board width are 1580mm, are matched with milling train size；
Upper guide and guard harden structure, be respectively welded on finishing mill entrance below foreplate in foreplate and outlet one piece it is compound
Plate, composite plate material use SS400-PL stainless steels.
The water spray of first group of inlet side spray wetting system and exit side spray wetting system all carries out strip upper table single
Blowing carries out two blowings；The water spray of second group of inlet side spray wetting system carries out two blowings to strip upper table.
First group of inlet side spray wetting system, second group of inlet side spray wetting system and exit side spray wetting system are equal
Using the nozzle of model 1/2KSE1650, the hydraulic pressure used is 0.25-0.35MPa, and flow is 15-17L/min, side spray
The angle of scattering of water is 45-55 °.
First group of inlet side spray wetting system, second group of inlet side spray wetting system and exit side spray wetting system point
It is not connected with computer.
The dedusting sprinkler uses 9 Spray-nozzle for removing dust, and Spray-nozzle for removing dust uses model 50070-280-BRSS-3/
The nozzle of 8NCJ-3.7-110-SS, the hydraulic pressure used be 0.15-0.25MPa, flow 6.5-7.5L/min, the scattering of water spray
Angle is 105-115 °.
Composite plate in the upper guide and guard harden structure is evenly distributed with the plug welding hole of 24 diameter 22mm, selects austenitic stainless steel
A302 welding rods, by composite plate together with being welded after foreplate fitting.
It is another object of the present invention to what is be achieved through the following technical solutions：
A kind of method that iron sheet ash press-in is reduced during hot tandem production strip, it includes following steps：
When hot tandem starts shooting and carries out belt steel rolling, 2 inlet side is carried out in finishing mill inlet to strip by S1
Water spray：
First time inlet side spray water is set from first group of inlet side spray water on finishing mill side guide outer end
Standby, the entrance side water spray sprayed purges strip；Second of entrance side water spray comes from and is mounted in finishing mill side guide
Second group of inlet side spray wetting system on end, the rack inside water spray sprayed purge strip；
S2 carries out exit side spray water at finishing mill outlet to strip：
From the exit side spray wetting system on finishing mill outlet memorial archway side, what is sprayed goes out exit side spray water
Side spray water purges strip at mouthful；
S3 carries out dedusting water spray at finishing mill outlet to strip：
Spray-nozzle for removing dust of the dedusting water spray in exit on foreplate under the outlet at finishing mill outlet；Dedusting
It is injected in the following table of strip；
S4, hot tandem production finish, and first close first group of inlet side spray wetting system, second group of inlet side spray water
Equipment, exit side spray wetting system and Spray-nozzle for removing dust, turn off unit；
S5, the cleaning after hot tandem shutdown, it includes：Cleaning when shutting down daily, flushing during each roll change and
Cleaning during big periodical repair.
Cleaning during the daily shutdown includes：
S511, finishing mill inlet side-guiding-board aperture gets to maximum opening during shutdown；
S512 carries out the incrustation in the equipment such as the cold stent of layer on the foreplate in rack and flipper guide, layer-cold roller way
It roots out；
S513 is switched on roll cooling water before filling roller, and the flushing of 3 minutes or more is carried out to rack, and cooling water pressure is true
It protects more than 1 megapascal；
S514, to first group of inlet side spray wetting system, first group of inlet side spray wetting system, exit side spray wetting system
And the nozzle in Spray-nozzle for removing dust is checked, for each water nozzle of spraying water without blocking, side spray water water nozzle inclination angle, deflection angle are normal.
Flushing during each roll change includes：
S521 is switched on the flushing that roll cooling water carries out rack 1 minute or more before filling roller, and cooling water pressure ensures
More than 1 megapascal；
S522 closes roll cooling water when filling roller；
S523 first opens roll cooling water, interstand cooling water and rack is carried out 1 minute or more again after filling roller
It rinses, does acyclic homologically trioial after flushing again；
S524, to first group of inlet side spray wetting system, first group of inlet side spray wetting system, exit side spray wetting system
And the nozzle in Spray-nozzle for removing dust is checked, for each water nozzle of spraying water without blocking, side spray water water nozzle inclination angle, deflection angle are normal.
Cleaning during the big periodical repair includes：
S531, finishing mill inlet side-guiding-board aperture get to maximum opening；
S532 is rinsed finishing mill rack with concatenation water, and flush position has：Crossbeam, water pipe, memorial archway between rack,
The equipment such as foreplate, flipper guide, kink, cover board；The equipment such as the panel under F7 rear defence noses device, measurement houselet；Layer-cold roller way
On the equipment such as the cold stent of layer；Flushing standard is：There is no floating dust dust stratification；
S533, rack will be to cold stents of layer on the foreplate in rack and flipper guide, layer-cold roller way etc. after rinsing
Incrustation in equipment is rooted out；
S534, to first group of inlet side spray wetting system, first group of inlet side spray wetting system, exit side spray wetting system
And the nozzle in Spray-nozzle for removing dust is checked, for each water nozzle of spraying water without blocking, side spray water water nozzle inclination angle, deflection angle are normal.
Beneficial effects of the present invention：
Reduced during the hot tandem production strip of the present invention method of iron sheet ash press-in except using conventional cleaning and
Outside dust suppression, also by the way that foreplate increases water in dust removal, inlet of rolling mill increases gear under increasing side spray water, outlet in milling train entrance
Hawk, improve milling train entrance on foreplate material or increase anticorrosive measure the methods of, effectively reduce iron sheet ash press-in lack
Sunken generation.
The present invention according to iron sheet ash press-in defect generate mechanism, formulated daily rinsing requirement, and pass through stop and
Purging reduces foreign matter press-in belt steel surface；It is generated by eliminating rust staining, is further reduced iron sheet ash press-in defect.
The present invention reduces the clearance times and labor intensity daily to hot tandem, eliminate security risk, improve
The quality of belt steel product, and reduce the cost of strip production.
For the above-mentioned purpose, design feature and effect further illustrated the present invention, below with reference to attached drawing to the present invention into
Row is described in detail.
Description of the drawings
Fig. 1 is the iron sheet ash schematic diagram that hot-strip occurs in the operation of rolling；
Fig. 2 is the position view for the detection device that existing hot tandem detects iron sheet ash；
Fig. 3 is the milling train side view used in the present invention；
Fig. 4 is the milling train top view used in the present invention.
Specific embodiment
The specific embodiment of the present invention is described in detail with reference to the attached drawing of embodiment.
The equipment that iron sheet ash press-in is reduced referring to Fig. 3-Fig. 4, when hot tandem of the invention produces strip includes：
The inlet side spray wetting system of finishing mill, as shown in figure 3, the inlet of finishing mill 3 is equipped with two groups of side spray wetting systems,
On the outer end for the flipper guide 1 that first group of inlet side spray wetting system 21 is mounted on finishing mill, the entrance side sprayed is sprayed water in work
101 upper table of strip is purged at set roller, the unilateral purging of generally use can also two blowings；Second group of inlet side spray
Wetting system 22 is mounted on the inner end of the flipper guide 1 of finishing mill, and it is side-blown to carry out two to strip 101 for water spray on the inside of the rack sprayed
It sweeps；
The exit side spray wetting system of finishing mill, the exit of finishing mill 3 are equipped with one group of exit side spray wetting system 23,
On the memorial archway side of finishing mill outlet, the exit side spray water sprayed purges strip 101, and generally use is unilateral
Purging, can also two blowings；
Dedusting sprinkler 7 is mounted on foreplate under the outlet of finishing mill outlet by several (the present embodiment uses 9)
Spray-nozzle for removing dust composition on 6, the following table for being injected in strip of dedusting sprinkler 7；Spray-nozzle for removing dust uses model
The nozzle of 50070-280-BRSS-3/8NCJ-3.7-110-SS, the hydraulic pressure used are 0.15-0.25MPa, flow 6.5-
7.5L/min, the angle of scattering of water spray is 105-115 °；Dedusting sprinkler 7 is opened when strip enters finishing mill area, strip
It is closed after the completion of batching, can be turned off manually and open during rolling；Dedusting sprinkler 7 is used to clear up iron scale and dust
It is deposited on lower foreplate, during preventing strip in threading and throwing steel, strip following table affixes iron sheet or dust, by rolling quilt
Press people's belt steel surface；
Dust block board 8, milling train top are disposed with the equipment such as oil cylinder, drier oil pipe, water pipe, these equipment are easily in ageing process
Situations such as generation oil leak, leak, dust stratification, if do not stopped, the mixtures such as grease, dust stratification for dropping will drop to strip
On, therefore dust block board 8 is added in the inlet of milling train, 4 front of foreplate on the entrance of finishing mill entrance is welded on, using not
Rust steel material is made, and the height of installation, which is subject to, does not influence inlet side-guiding-board either on or off and frame is thrown into and got；Dust block board 8
Front end is bent, and is stopped that foreign matter drops, is welded on by metal components such as angle bar on milling train；Dust block board width is 1580mm, with rolling
Machine size matches；During flushing, the both ends outflow that the foreign matter on dust block board can be in the width direction is dropped in trench；
Upper guide and guard harden structure, foreplate material is all carbon steel material on existing milling train entrance, the guide and guard of this material
Plate is subject to high-temperature baking and aqueous vapor to corrode in process of production, and corrosion easily occurs, can fall off, lead when rust staining is vibrated
The generation of the press-in of iron sheet ash is caused, since rear several rack mill speeds of finish rolling tandem mill reach 10 meter per seconds or so, is come off
Rust staining does not leave belt steel surface also when side spray water purges and just has been enter into milling train；For this purpose, the guide and guard of the invention on finishing mill entrance
One piece of composite plate (not shown) is respectively welded below the upper foreplate of plate 4 and outlet, composite plate material is stainless using SS400-PL
Steel, i.e. composite plate is welded below former carbon steel material foreplate, composite plate is evenly distributed with the plug welding hole of 24 diameter 22mm, selects difficult to understand
Family name's body stainless steel A302 welding rods, welding method：It is placed steadily after foreplate is turned over, composite plate surface stainless steel is upward, uses weight
It is checked after compression, it is desirable that the plug welding hole of composite plate and foreplate good fit, first welding middle part, then weld surrounding, when welding adopt
With balanced welding connection, Reducing distortion amount.
First group of inlet side spray wetting system, 21, second groups of inlet side spray wetting systems 22 and exit side spray water are set
Standby 23 use the nozzle of model 1/2KSE1650, and the hydraulic pressure used is 0.25-0.35MPa, and flow is 15-17L/
Min, the angle of scattering of side spray water is 45-55 ° (angle of scattering of side spray water refers to the angle of scattering of nozzle spray)；Described first group enters
At mouthful 21, second groups of inlet side spray wetting systems 22 of side spray wetting system and exit side spray wetting system 23 respectively with computer (not
Diagram) connection；The water nozzle inclination angle of first group of inlet side spray wetting system 21 (water nozzle inclination angle refers to the up and down adjustment direction of nozzle)
Water column of being subject to is flushed to loop back roll, and the water nozzle inclination angle of second group of inlet side spray wetting system 22 and exit side spray wetting system 23 is equal
Water column of being subject to is flushed to steel edge portion upper table.
The method that iron sheet ash press-in is reduced during the hot tandem production strip of the present invention comprises the steps of：
When hot tandem starts shooting and carries out belt steel rolling, 2 inlet side is carried out in finishing mill inlet to strip by S1
Water spray：
First time inlet side spray water is set from first group of inlet side spray water on finishing mill side guide outer end
Standby, the entrance side water spray sprayed carries out unilateral or two blowings to strip；Second of entrance side water spray comes from and is mounted on finish rolling
Second group of inlet side spray wetting system on pusher side guide plate inner end, it is side-blown that the rack inside water spray sprayed carries out two to strip
It sweeps；
The first time inlet side spray water, the hydraulic pressure of second of entrance side water spray are 0.25-0.35MPa, and flow is equal
For 15-17L/min, the angle of scattering of side spray water is 45-55 °；The water column of first time inlet side spray water is flushed to loop back roll, and second
The water column of secondary entrance side water spray is flushed to steel edge portion upper table；
S2 carries out exit side spray water at finishing mill outlet to strip：
From the exit side spray wetting system on finishing mill outlet memorial archway side, what is sprayed goes out exit side spray water
Side spray water carries out unilateral or two blowings to strip at mouthful；
The hydraulic pressure that the exit side spray water uses be 0.25-0.35MPa, flow 15-17L/min, side spray water dissipate
Firing angle is 45-55 °；Its side spray water water column is flushed to steel edge portion upper table；
The inlet side spray water, rack inside is sprayed water and the control mode of exit side spray water is：
Automatic control mode：By computer model set side spray water use state, state mainly according to steel grade, thickness into
Row layer Que Ding not；
Manual control mode：It can manually be selected from operation screen using each frame side water spray use state；Each rack is removed
Dirt water；
Use regulation：Under normal circumstances (have particular/special requirement except), using normal spray control mode manually, do not allow to stop without authorization
With or close side spray water；
S3 carries out dedusting water spray at finishing mill outlet to strip：
Spray-nozzle for removing dust of the dedusting water spray in exit on foreplate under the outlet at finishing mill outlet；Dedusting
It is injected in the following table of strip；
The hydraulic pressure that the dedusting water spray uses is 0.15-0.25MPa, flow 6.5-7.5L/min, and water spray angle is
105-115°；
S4, hot tandem production finish, and first close first group of inlet side spray wetting system, second group of inlet side spray water
Equipment, exit side spray wetting system and Spray-nozzle for removing dust, turn off unit；
S5, the cleaning after hot tandem shutdown, it includes：Cleaning when shutting down daily, flushing during each roll change and
Cleaning during big periodical repair；
Cleaning during the daily shutdown includes：
S511, finishing mill inlet side-guiding-board aperture gets to maximum opening during shutdown；
S512 carries out the incrustation in the equipment such as the cold stent of layer on the foreplate in rack and flipper guide, layer-cold roller way
It roots out；
S513 is switched on roll cooling water before filling roller, and the flushing of 3 minutes or more is carried out to rack, and cooling water pressure is true
It protects more than 1 megapascal；
S514, to first group of inlet side spray wetting system, first group of inlet side spray wetting system, exit side spray wetting system
And the nozzle in Spray-nozzle for removing dust is checked, for each water nozzle of spraying water without blocking, side spray water water nozzle inclination angle, deflection angle are normal；
Flushing during each roll change includes：
S521 is switched on the flushing that roll cooling water carries out rack 1 minute or more before filling roller, and cooling water pressure ensures
More than 1 megapascal；
S522 closes roll cooling water when filling roller；
S523 first opens roll cooling water, interstand cooling water and rack is carried out 1 minute or more again after filling roller
It rinses, does acyclic homologically trioial after flushing again；
S524, to first group of inlet side spray wetting system, first group of inlet side spray wetting system, exit side spray wetting system
And the nozzle in Spray-nozzle for removing dust is checked, for each water nozzle of spraying water without blocking, side spray water water nozzle inclination angle, deflection angle are normal；
Cleaning during the big periodical repair includes：
S531, finishing mill inlet side-guiding-board aperture get to maximum opening；
S532 is rinsed finishing mill rack with concatenation water, and flush position has：Crossbeam, water pipe, memorial archway between rack,
The equipment such as foreplate, flipper guide, kink, cover board；The equipment such as the panel under F7 rear defence noses device, measurement houselet；Layer-cold roller way
On the equipment such as the cold stent of layer；Flushing standard is：There is no floating dust dust stratification；
S533, rack will be to cold stents of layer on the foreplate in rack and flipper guide, layer-cold roller way etc. after rinsing
Incrustation in equipment is rooted out；
S534, to first group of inlet side spray wetting system, first group of inlet side spray wetting system, exit side spray wetting system
And the nozzle in Spray-nozzle for removing dust is checked, for each water nozzle of spraying water without blocking, side spray water water nozzle inclination angle, deflection angle are normal.
Those of ordinary skill in the art it should be appreciated that more than embodiment be intended merely to illustrate the present invention's
Purpose, and limitation of the invention is not used as, as long as in the essential scope of the present invention, the change to embodiment described above
Change, modification will all fall in the range of the claim of the present invention.
Claims (10)
1. the equipment of iron sheet ash press-in is reduced during a kind of hot tandem production strip, it is characterised in that include：
The inlet side spray wetting system of finishing mill, is two groups of side spray wetting systems for being located at finishing mill inlet, first group of inlet
Side spray wetting system is mounted on the outer end of the flipper guide of finishing mill, and the entrance side sprayed is sprayed water at loop back roll to strip upper table
It is purged；On the inner end for the flipper guide that second group of inlet side spray wetting system is mounted on finishing mill, on the inside of the rack of ejection
Water spray purges strip；
The exit side spray wetting system of finishing mill is one group of exit side spray wetting system being located at finishing mill outlet, installation
On the memorial archway side of finishing mill outlet, the exit side spray water sprayed purges strip；
Dedusting sprinkler is made of the Spray-nozzle for removing dust on foreplate under several outlets mounted at finishing mill outlet, sprays
Water injection is in the following table of strip；
Dust block board is welded on the entrance of finishing mill entrance before foreplate by metal component, is made of stainless steel,
The height of installation, which is subject to, does not influence inlet side-guiding-board opening, close and frame is thrown into, got；The front end bending of dust block board, gear
Hawk width is 1580mm, is matched with milling train size；
One piece of composite plate is respectively welded below foreplate in foreplate and outlet on finishing mill entrance in upper guide and guard harden structure,
Composite plate material uses SS400-PL stainless steels.
2. the equipment of iron sheet ash press-in is reduced during hot tandem production strip as described in claim 1, it is characterised in that：
The water spray of first group of inlet side spray wetting system and exit side spray wetting system all carries out unilateral side to strip upper table and blows
Sweep or carry out two blowings；The water spray of second group of inlet side spray wetting system carries out two blowings to strip upper table.
3. the equipment of iron sheet ash press-in is reduced during hot tandem production strip as described in claim 1, it is characterised in that：
First group of inlet side spray wetting system, second group of inlet side spray wetting system and exit side spray wetting system use
The nozzle of model 1/2KSE1650, the hydraulic pressure used are 0.25-0.35MPa, and flow is 15-17L/min, side spray water
Angle of scattering is 45-55 °.
4. the equipment of iron sheet ash press-in is reduced during hot tandem production strip as described in claim 1, it is characterised in that：
First group of inlet side spray wetting system, second group of inlet side spray wetting system and exit side spray wetting system respectively with
Computer connects.
5. the equipment of iron sheet ash press-in is reduced during hot tandem production strip as described in claim 1, it is characterised in that：
The dedusting sprinkler uses 9 Spray-nozzle for removing dust, and Spray-nozzle for removing dust uses model 50070-280-BRSS-3/
The nozzle of 8NCJ-3.7-110-SS, the hydraulic pressure used be 0.15-0.25MPa, flow 6.5-7.5L/min, the scattering of water spray
Angle is 105-115 °.
6. the equipment of iron sheet ash press-in is reduced during hot tandem production strip as described in claim 1, it is characterised in that：
Composite plate in the upper guide and guard harden structure is evenly distributed with the plug welding hole of 24 diameter 22mm, selects austenitic stainless steel A302 welderings
Item, by composite plate together with being welded after foreplate fitting.
7. the method for iron sheet ash press-in is reduced during a kind of hot tandem production strip, it is characterised in that comprise the steps of：
When hot tandem starts shooting and carries out belt steel rolling, 2 inlet side sprays are carried out in finishing mill inlet to strip by S1
Water：
First time inlet side spray water from first group of inlet side spray wetting system on finishing mill side guide outer end,
The entrance side water spray of ejection purges strip；Second of entrance side water spray is from finishing mill side guide inner end
Second group of inlet side spray wetting system, the rack inside water spray sprayed purge strip；
S2 carries out exit side spray water at finishing mill outlet to strip：
Exit side spray water is from the exit side spray wetting system on finishing mill outlet memorial archway side, the exit sprayed
Side spray water purges strip；
S3 carries out dedusting water spray at finishing mill outlet to strip：
Spray-nozzle for removing dust of the dedusting water spray in exit on foreplate under the outlet at finishing mill outlet；Dedusting is sprayed water
It is injected in the following table of strip；
S4, hot tandem production finish, and first close first group of inlet side spray wetting system, second group of inlet side spray water is set
Standby, exit side spray wetting system and Spray-nozzle for removing dust turn off unit；
S5, the cleaning after hot tandem shutdown, it includes：Cleaning when shutting down daily, flushing during each roll change and big fixed
Cleaning when repairing.
8. the method for iron sheet ash press-in is reduced during hot tandem production strip as claimed in claim 7, it is characterised in that：
Cleaning during the daily shutdown includes：
S511, finishing mill inlet side-guiding-board aperture gets to maximum opening during shutdown；
S512 roots out the incrustation in the equipment such as the cold stent of layer on the foreplate in rack and flipper guide, layer-cold roller way；
S513 is switched on roll cooling water before filling roller, and the flushing of 3 minutes or more is carried out to rack, and cooling water pressure is ensured 1
It is more than megapascal；
S514, to first group of inlet side spray wetting system, first group of inlet side spray wetting system and removes exit side spray wetting system
Nozzle in dirt nozzle is checked that for each water nozzle of spraying water without blocking, side spray water water nozzle inclination angle, deflection angle are normal.
9. the method for iron sheet ash press-in is reduced during hot tandem production strip as claimed in claim 7, it is characterised in that：
Flushing during each roll change includes：
S521 is switched on the flushing that roll cooling water carries out rack 1 minute or more before filling roller, and cooling water pressure is ensured 1
It is more than megapascal；
S522 closes roll cooling water when filling roller；
S523 first opens roll cooling water, interstand cooling water and again rack is carried out 1 minute or more rushing after filling roller
It washes, does acyclic homologically trioial after flushing again；
S524, to first group of inlet side spray wetting system, first group of inlet side spray wetting system and removes exit side spray wetting system
Nozzle in dirt nozzle is checked that for each water nozzle of spraying water without blocking, side spray water water nozzle inclination angle, deflection angle are normal.
10. the method for iron sheet ash press-in is reduced during hot tandem production strip as claimed in claim 7, it is characterised in that：
Cleaning during the big periodical repair includes：
S531, finishing mill inlet side-guiding-board aperture get to maximum opening；
S532 is rinsed finishing mill rack with concatenation water, and flush position has：Crossbeam, water pipe between rack, memorial archway, guide and guard
The equipment such as plate, flipper guide, kink, cover board；The equipment such as the panel under F7 rear defence noses device, measurement houselet；In layer-cold roller way
The equipment such as the cold stent of layer；Flushing standard is：There is no floating dust dust stratification；
S533, rack will be to equipment such as the cold stents of layer on the foreplate in rack and flipper guide, layer-cold roller way after rinsing
On incrustation rooted out；
S534, to first group of inlet side spray wetting system, first group of inlet side spray wetting system and removes exit side spray wetting system
Nozzle in dirt nozzle is checked that for each water nozzle of spraying water without blocking, side spray water water nozzle inclination angle, deflection angle are normal.
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| CN201611068432.1A CN108114994B (en) | 2016-11-29 | 2016-11-29 | The device and method of iron sheet ash indentation are reduced when a kind of hot tandem production strip |
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