CN102284495A - Water mist pinch pass rolling process in cold rolling wet pinch pass rolling production - Google Patents
Water mist pinch pass rolling process in cold rolling wet pinch pass rolling production Download PDFInfo
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- CN102284495A CN102284495A CN201110237635XA CN201110237635A CN102284495A CN 102284495 A CN102284495 A CN 102284495A CN 201110237635X A CN201110237635X A CN 201110237635XA CN 201110237635 A CN201110237635 A CN 201110237635A CN 102284495 A CN102284495 A CN 102284495A
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Abstract
The invention relates to a process for carrying out pinch pass rolling production by adopting water mist pinch pass rolling, in particular to a water mist pinch pass rolling process in the cold rolling wet pinch pass rolling production, which is characterized by comprising the following steps of: 1, water mist pinch pass rolling: (1), arranging a water mist pinch pass rolling spraying device at an inlet of a wet pinch pass mill, wherein a nozzle orifice of a nozzle of the water mist pinch pass rolling spraying device faces towards a roll gap between a working roll and a supporting roll; and (2), when the wet pinch pass mill starts pinch pass rolling, spraying mist pinch pass rolling liquid by the nozzle; after the pinch pass rolling is ended, stopping spraying by the nozzle; and 2, sucking for removing dust by adopting a water mist pinch pass rolling suction dust-removing system: (1), using a lower port of a winding-preventing guide plate as a first suction opening, arranging an inlet exhaust tube at the inlet side of the wet pinch pass mill, and using a lower port of the exhaust tube at the inlet side as a second exhaust tube; and (2), when the wet pinch pass mill starts the pinch pass rolling, starting an exhaust fan, and when the pinch pass rolling is ended, stopping the exhaust fan. According to the process, the surface quality of strip steel can be enhanced, and the production energy consumption can be reduced.
Description
Technical field
The invention belongs to the cold rolling levelling technical field, be specifically related to a kind of smooth technology of carrying out smooth production of water smoke that adopts, be applied to all kinds of cold rolling levelling units.
Background technology
The smooth production of tradition comprises does smooth, wet smooth two kinds of processes.Dried flattening process can produce a large amount of dust in formation process, cause the finished strip surface contamination.Wet smooth employing is arranged a wet smooth spray beam at entrance side, arrange 8～12 nozzles on the spray beam, the smooth liquid of the about 108～168L/h flow of each nozzle ejection sprays a large amount of smooth liquid on working roll and band steel, the dust that produces in the flushing formation process.After but a large amount of smooth liquid are ejected into belt steel surface, can bring problems such as the smooth back smooth liquid of belt steel surface is residual.Compressed air purging spray beam by the planisher outlet is sprayed big flow compressed air, to remove the residual smooth liquid of belt steel surface; Need on smooth, to arrange the multistage sweeping beam, blow sordid problem, cause problems such as smooth spot to belt steel surface but belt steel surface can occur.
As shown in Figure 1, the conventional wet flattening process in planisher (four roller planishers) body 1, is depressed cylinder 2 and is pressed backing roll 3 in smooth production, and backing roll 3 compresses working roll 4, and working roll 4 transmissions drive backing roll 3 and rotate together being with steel 6 to carry out skin pass rolling.In smoothing and rolling process, between the working roll 4 of planisher inlet and band steel 6, spray smooth liquid by wet smooth spray beam 5, compressed air by the planisher outlet purges the big flow compressed air of spray beam 7 injections again, to remove the residual smooth liquid of belt steel surface.
Though temper rolling technology can solve most of smooth dust problem, in formation process, smooth liquid can cause the product surface quality defective by the both sides channelling of band steel to the finished strip surface.And the mode that big flow compressed air purges can consume a large amount of electric energy.
In smooth production process, a large amount of fogs and dust granules can appear.If these dust granules can not in time be discharged, will fall belt steel surface and roller surface, influence roll surface roughness and strip surface quality.Shown in Figure 2, adopt above seal bootr entrance and exit limit to arrange that respectively a suction air port is pumped in the dust of frame the inside traditionally, wherein do smooth also at the anti-guide plate arranged beneath suction air port suction operation roller surface dust that twines.Though the smooth suction dust collecting process of tradition can aspirate discharge section dust and fog, but because the suction air port of arranging above seal bootr is too high, can not reach very good effect, there still have many fogs and dust to take out in the production process to be unclean, bring defective to belt steel surface, influence product quality.And because the air port that is arranged on the seal bootr is too high, higher to the power requirement of sucktion fan, consumed a large amount of electric energy.
Therefore, all there is technological deficiency in traditional cold rolling levelling technology aspect the product surface quality control.
Summary of the invention
The object of the present invention is to provide the water smoke flattening process in a kind of cold rolling wet smooth production, this technology can improve strip surface quality, reduces energy consumption.
For achieving the above object, technical scheme of the present invention is: the water smoke flattening process in the cold rolling wet smooth production is characterized in that it comprises the steps:
1) water smoke is smooth:
1. the entrance side at wet planisher is provided with the smooth injection apparatus of water smoke, and the roll gap of the spout of the nozzle of the smooth injection apparatus of water smoke between working roll and backing roll, nozzle are positioned at the roll gap 200～400mm place from working roll and backing roll;
2. when wet planisher skin pass rolling began, nozzle ejection went out vaporific smooth liquid; When skin pass rolling finished, nozzle stopped to spray;
2) adopt the smooth suction dust pelletizing system suction of water smoke dedusting:
1. planisher outlet side anti-of will wetting twines guide plate and is hollow passageway in adopting, the anti-lower port that twines guide plate is first suction opeing, first suction opeing passes through line 50-200mm apart from the band steel, the anti-upper port that twines guide plate is connected with an end of outlet side exhaust column, the other end of outlet side exhaust column is connected with total exhaust column, and total exhaust column links to each other with the exhausting blower fan; The entrance side of wet planisher is provided with the entrance side exhaust column, the lower port of entrance side exhaust column is second suction opeing, second suction opeing is positioned at work roll surface and belt steel surface place, second suction opeing is from work roll surface 100～200mm, second suction opeing is from belt steel surface 50～200mm, and the upper port of entrance side exhaust column is connected with total exhaust column;
2. when wet planisher skin pass rolling begins, start the exhausting blower fan, first suction opeing aspirates and rolls back belt steel surface and roll gap place dust, and the nozzle ejection of the smooth injection apparatus of second suction opeing suction water smoke goes out the fog and the surface dust of being with the steel supplied materials after vaporific smooth liquid surrounds dust; When skin pass rolling finishes, stop the exhausting blower fan.
Described nozzle is provided with air input and smooth liquid input, and nozzle is provided with the mixing valve that is used to regulate air mass flow and smooth flow quantity; When wet planisher skin pass rolling begins, to nozzle input compressed air and smooth liquid, open and regulate mixing valve, making the smooth flow quantity that flows into each nozzle is 10～44.7L/h, the air mass flow that flows into each nozzle is 5.2～13m
3/ h, smooth liquid and compressed air mix at the nozzle place, and spray with aerosol by the spout of nozzle; When skin pass rolling finishes, stop the conveying of compressed air and smooth liquid, close mixing valve.
Water smoke planarization system in the cold rolling wet smooth production is made up of smooth injection apparatus of water smoke and the smooth suction dust pelletizing system of water smoke.
The smooth injection apparatus of the described water smoke of step 1) comprises the smooth spray beam 10 of water smoke, telescoping mechanism, smooth mist jet device; Smooth mist jet device is fixed on the smooth spray beam 10 of water smoke, the smooth spray beam 10 of water smoke by telescoping mechanism be connected crossbeam 15 and link to each other, the two ends of crossbeam 15 are separately fixed on the frame 16 of wet planisher;
Described smooth mist jet device comprises nozzle 18, air header 20, smooth liquid house steward 21; Air header 20 and smooth liquid house steward 21 are along the axis arranged of working roll 4, air header 20 and smooth liquid house steward 21 all are fixed on the smooth spray beam 10 of water smoke, the one end sealing of air header 20, the other end of air header 20 is connected with air delivery hose 22, smooth liquid house steward's 21 end sealing, smooth liquid house steward's 21 the other end is connected with smooth liquid delivery hose 22; The number of described nozzle 18 is 7～11, the roll gap of the spout of all nozzles 18 between working roll 4 and backing roll 3; The air input of nozzle 18 is in charge of with air header 20 by air and is connected, and the smooth liquid input of nozzle 18 is in charge of with smooth liquid house steward 21 by smooth liquid and is connected, and nozzle 18 is provided with mixing valve 19;
Described telescoping mechanism comprises first hydraulic cylinder 11, base plate 12, slide bar 13, coulisse 14, the bottom of base plate 12 is fixed on and connects on the crossbeam 15, base plate 12 is provided with coulisse 14, and an end of slide bar 13 passes behind the chute on the coulisse 14 with the smooth spray beam of water smoke 10 hinged; The cylinder body of first hydraulic cylinder 11 is linked to each other with base plate 12 by the hydraulic cylinder seat, and the smooth spray beam of the piston rod of first hydraulic cylinder 11 and water smoke 10 is hinged.
Step 2) the smooth suction dust pelletizing system of described water smoke, it comprises anti-twine guide plate 24, entrance side exhaust column 27, prevent twining the outlet side that guide plate 24 is positioned at wet planisher, it is hinged that the piston rod of 2 movable hydraulic cylinders 25 prevents twining guide plate 24 respectively, and the cylinder body of movable hydraulic cylinder 25 is linked to each other with frame 16 by the hydraulic cylinder seat; Anti-twining is hollow passageway in the guide plate 24, the anti-lower port that twines guide plate 24 is first suction opeing 30, first suction opeing 30 is positioned at the top of band steel by line, first suction opeing 30 passes through line 50-200mm apart from the band steel, the anti-upper port that twines guide plate 24 is connected with an end of outlet side exhaust column 26, the other end of outlet side exhaust column 26 is connected with total exhaust column, and total exhaust column links to each other with the exhausting blower fan; The entrance side of wet planisher is provided with entrance side exhaust column 27, entrance side exhaust column 27 is fixedlyed connected with frame 16 by fixed cross beam 28, the lower port of entrance side exhaust column 27 is second suction opeing 31, second suction opeing 31 is positioned at work roll surface and belt steel surface place, second suction opeing 31 is from work roll surface 100～200mm, second suction opeing 31 is from belt steel surface 50～200mm, and the upper port of entrance side exhaust column 27 is connected with total exhaust column.
Beneficial effect of the present invention:
1. adopt the atomized water spray mode to reduce smooth liquid consumption
In wet smooth production process, the main effect of smooth liquid is not lubricated and cooling, but cleans a large amount of dust and the protection roll surface that produces in the smooth production process.Therefore adopt atomized water spray technology, smooth liquid is sprayed in the aerosol mode, the aerosol of injection is fully pounced on and is caught the dust that produces in the formation process, prevents that dust fills the air in the smoothing and rolling process everywhere, pollutes roll and belt steel surface.Adopt the aerosol spray regime, not only can reduce pollution, promote smooth product surface quality, can also save the consumption of smooth liquid greatly, fully reduce the production cost of smooth operation.
2. change the spray beam position and solve smooth spot problem
Adopt the water smoke levelling method; make common wet smooth spray beam into water smoke smooth spray beam; and will move on the spray beam position; the roll gap that eject position is contacted with the strip by working roll moves to the roll gap that working roll contacts with backing roll; spray smooth mist at the planisher inlet to the roll gap of planisher working roll and backing roll by the atomized water spray beam, the smooth mist of injection is fully pounced on and is caught the smooth dust of roller surface, lubricated simultaneously roll; the protection roll surface roughness prolongs roll service life.Owing to adopt the atomized water spray beam, and eject position suitably adjusted, smooth mist directly sprays facing to working roll and backing roll roll gap place, the smooth spot problem of effectively having avoided smooth liquid to be caused to the finished strip surface by the both sides channelling of band steel, the compressed air that can reduce even cancel simultaneously highly energy-consuming purges, and cuts down the consumption of energy.
3. novel suction dust collecting process improves strip surface quality
Adopt water smoke suction dust collection method, change traditional suction mode, suction air port, seal bootr top is removed, near band steel and roll, design aspirator, aspirate the incoming band steel surface dust respectively and roll back belt steel surface dust, be used for the fog particle after the pump up water mist jet surrounds dust simultaneously, guarantee the belt steel surface cleaning.Roll the belt steel surface dust that the back produces by changing suction air port and suction position, can finely removing, and the fog dust granules behind the discharge water mist jet, band steel and roller surface cleaning in the formation process fully guaranteed.
4. the water smoke flattening process reduces energy consumption and production costs
In the water smoke flattening process, adopt atomized water spray to replace smooth liquid to spray, saved smooth liquid consumption greatly, reduce smooth production cost; After adopting the aerosol spray regime simultaneously and changing the spray beam position, it is residual to have significantly reduced belt steel surface, arranges that thereby can reduce even cancel to purge the consumption of reduction compressed air cuts down the consumption of energy; Adopt water smoke suction dust collecting process, not only can improve suction effect, guarantee the belt steel surface cleaning in the smooth production process, but also reduced sucktion fan power, save power consumption.Therefore adopt the water smoke flattening process, not only can reduce pollution, promote smooth product surface quality, can also reduce energy consumption and production costs.
Description of drawings
Fig. 1 is the smooth injection schematic diagram of conventional wet.
Fig. 2 is the smooth ventilation and dust removal system schematic of conventional wet.
Fig. 3 is the sketch of the smooth injection of water smoke of the present invention.
Fig. 4 is the partial detailed schematic diagram of the smooth injection of water smoke of the present invention.
Fig. 5 is the vertical view of the smooth injection of water smoke of the present invention.
Fig. 6 is a structure of nozzle schematic diagram of the present invention.
Fig. 7 is the schematic diagram of the smooth suction dust pelletizing system of water smoke of the present invention.
Fig. 8 is the vertical view of the smooth suction dust pelletizing system of invention water smoke.
Among the figure: 1-planisher body; 2-depresses cylinder; The 3-backing roll; The 4-working roll; The 5-smooth spray beam that wets; 6-is with steel; 7-compressed air purges spray beam; The 8-welding support; The 9-vibration-resistant roller; The smooth spray beam of 10-water smoke; 11-first hydraulic cylinder; The 12-base plate; The 13-slide bar; The 14-coulisse; 15-connects crossbeam; The 16-frame; The wrinkle resistant roller of 17-, 18-nozzle, 19-mixing valve, 20-air header, the smooth liquid house steward of 21-, 22-air delivery hose, the smooth liquid delivery hose of 23-; The anti-guide plate that twines of 24-; The movable hydraulic cylinder of 25-; 26-outlet side exhaust column; 27-entrance side exhaust column; The 28-fixed cross beam; 30-first suction opeing; 31-second suction opeing; 32-the 3rd suction opeing; 33-the 4th suction opeing.Arrow among the figure is represented rolling direction.
The specific embodiment
Water smoke flattening process in the cold rolling wet smooth production, it comprises the steps:
1) water smoke is smooth:
1. the entrance side at wet planisher is provided with the smooth injection apparatus of water smoke, (as: the smooth injection apparatus of described water smoke can be 2 to the roll gap of the spout of the nozzle of the smooth injection apparatus of water smoke between working roll and backing roll, the roll gap of spout between top working roll and top backing up roll of the nozzle of the smooth injection apparatus of first water smoke; The roll gap of the spout of the nozzle of second smooth injection apparatus of water smoke between bottom working roll and lower support roller), nozzle is positioned at roll gap 200～400mm place from working roll and backing roll (nozzle to the distance at roll gap place is 200～400mm);
2. when wet planisher skin pass rolling began, nozzle ejection went out vaporific smooth liquid (smooth mist); When skin pass rolling finished, nozzle stopped to spray;
Described nozzle is provided with air input and smooth liquid input, and nozzle is provided with the mixing valve that is used to regulate air mass flow and smooth flow quantity; When wet planisher skin pass rolling begins, to nozzle input compressed air and smooth liquid, open and regulate mixing valve, making the smooth flow quantity that flows into each nozzle is 10～44.7L/h (smooth liquid is existing), the air mass flow that flows into each nozzle is 5.2～13m
3(air pressure is 1.5～5.5bar) to/h, and smooth liquid and compressed air mix at the nozzle place, and sprays with aerosol by the spout of nozzle; When skin pass rolling finishes, stop the conveying of compressed air and smooth liquid, close mixing valve.
2) adopt the smooth suction dust pelletizing system suction of water smoke dedusting:
1. planisher outlet side anti-of will wetting twines guide plate and is hollow passageway in adopting, the anti-lower port that twines guide plate is first suction opeing, first suction opeing passes through line 50-200mm (promptly first suction opeing and belt steel surface distance is 50-200mm) apart from the band steel, the anti-upper port that twines guide plate is connected with an end of outlet side exhaust column, the other end of outlet side exhaust column is connected with total exhaust column, and total exhaust column links to each other with the exhausting blower fan; The entrance side of wet planisher is provided with the entrance side exhaust column, the lower port of entrance side exhaust column is second suction opeing, second suction opeing is positioned at work roll surface and belt steel surface place, second suction opeing is from work roll surface 100～200mm, second suction opeing is from belt steel surface 50～200mm, and the upper port of entrance side exhaust column is connected with total exhaust column;
2. when wet planisher skin pass rolling begins, start exhausting blower fan (air exhauster), first suction opeing aspirates and rolls back belt steel surface and roll gap place dust, and the nozzle ejection of the smooth injection apparatus of second suction opeing suction water smoke goes out the fog and the surface dust of being with the steel supplied materials after vaporific smooth liquid (smooth mist) surrounds dust; When skin pass rolling finishes, stop the exhausting blower fan.
The smooth injection apparatus of described water smoke can be 2, the roll gap of spout between top working roll and top backing up roll of the nozzle of the smooth injection apparatus of first water smoke; The roll gap of the spout of the nozzle of second smooth injection apparatus of water smoke between bottom working roll and lower support roller; As shown in Figure 3.
Water smoke planarization system in the cold rolling wet smooth production is made up of smooth injection apparatus of water smoke and the smooth suction dust pelletizing system of water smoke.
As shown in Figure 3, the smooth injection apparatus of the described water smoke of step 1) comprises the smooth spray beam 10 of water smoke, telescoping mechanism, smooth mist jet device; Smooth mist jet device is fixed on the smooth spray beam 10 of water smoke, the smooth spray beam 10 of water smoke by telescoping mechanism be connected crossbeam 15 and link to each other, the two ends of crossbeam 15 are separately fixed on the frame 16 of wet planisher;
As Fig. 4, Fig. 5 and shown in Figure 6, described smooth mist jet device comprises nozzle 18, air header 20, smooth liquid house steward 21; Air header 20 and the axis arranged (length direction that be house steward with the length direction of working roll consistent) of smooth liquid house steward 21 along working roll 4, air header 20 and smooth liquid house steward 21 all are fixed on the smooth spray beam 10 of water smoke, the one end sealing of air header 20, the other end of air header 20 be connected with air delivery hose 22 (air delivery hose provides the air source), the sealing of smooth liquid house steward's 21 a end, smooth liquid house steward's 21 the other end be connected with smooth liquid delivery hose 22 (smooth liquid delivery hose provides smooth liquid); The number of described nozzle 18 is 7～11 (concrete number is determined as required, and is uniform), the roll gap of the spout of all nozzles 18 between working roll 4 and backing roll 3; The air input of nozzle 18 is in charge of with air header 20 by air and is connected, the smooth liquid input of nozzle 18 is in charge of with smooth liquid house steward 21 by smooth liquid and is connected, nozzle 18 is provided with mixing valve 19 (mixing valve is used to regulate the air in the flow nozzle 18 and the flow of smooth liquid, also can be described as control valve);
Described telescoping mechanism comprises first hydraulic cylinder 11, base plate 12, slide bar 13, coulisse 14, the bottom of base plate 12 is fixed (welding) and is being connected on the crossbeam 15, base plate 12 is provided with coulisse 14, one end of slide bar 13 passes the smooth spray beam of chute (or slide opening) back and water smoke on the coulisse 14 10, and hinged (for stable, each slide bar passes 2 coulisses; 2 slide bars are set, lay respectively at the both sides of first hydraulic cylinder); The cylinder body of first hydraulic cylinder 11 is linked to each other with base plate 12 by the hydraulic cylinder seat, and the smooth spray beam of the piston rod of first hydraulic cylinder 11 and water smoke 10 is hinged.The piston rod of first hydraulic cylinder 11 is flexible, and the smooth spray beam 10 of drive water smoke, nozzle 18 stretch, and when the backing roll roll change, with smooth spray beam 10 withdrawals of water smoke, during Rolling Production, the smooth spray beam 10 of water smoke is stretched out.
In smooth production process, spray smooth mist by the smooth spray beam 10 of water smoke to inlet working roll and backing roll roll gap place, smooth mist is pounced on and is caught the smooth dust that produces in wrinkle resistant roller 17 top belt steel surface dust and the production process, prevents to drop onto belt steel surface contaminated zone steel and roller surface; The smooth liquid that is sprayed onto between roll gap can lubricate working roll and backing roll simultaneously, and guarantees the roll surface roughness in the smooth production process.Because smooth mist can not pollute by low belt steel surface, between outlet side working roll 4 and vibration-resistant roller 9, can cancel the band steel and purge.
As Fig. 7, shown in Figure 8, step 2) the smooth suction dust pelletizing system of described water smoke, it comprises anti-twine guide plate 24, entrance side exhaust column 27 (aspirator), prevent twining the outlet side (left side of the working roll of Fig. 7) that guide plate 24 is arranged in wet planisher, it is hinged that the piston rod of 2 movable hydraulic cylinders 25 prevents twining guide plate 24 respectively, and the cylinder body of movable hydraulic cylinder 25 is linked to each other with frame 16 by the hydraulic cylinder seat; Anti-twining is hollow passageway in the guide plate 24, the anti-lower port that twines guide plate 24 is that first suction opeing, 30, the first suction opeings 30 are arranged in the top of band steel by line (position at the band steel place of figure level is for the band steel passes through line; Promptly near band steel 6 surfaces), first suction opeing 30 passes through line 50-200mm apart from the band steel, the anti-upper port that twines guide plate 24 is connected with an end of outlet side exhaust column 26, and the other end of outlet side exhaust column 26 is connected with total exhaust column, and total exhaust column links to each other with the exhausting blower fan; First suction opeing, 30 suction operation rollers and vibration-resistant roller 9 direct belt steel surface dust when changing jobs roller, prevent that twining guide plate 24 has movable hydraulic cylinder 25 to draw back, and stretches out during Rolling Production again; The entrance side (right side of the working roll among Fig. 7) of wet planisher is provided with entrance side exhaust column 27, entrance side exhaust column 27 is fixedlyed connected with frame 16 by fixed cross beam 28, the lower port of entrance side exhaust column 27 is second suction opeing 31, second suction opeing 31 is positioned at work roll surface and belt steel surface place, (from the nearest distance of work roll surface is 100～200mm) to second suction opeing 31 from work roll surface 100～200mm, second suction opeing 31 is from belt steel surface 50～200mm, and the upper port of entrance side exhaust column 27 is connected with total exhaust column.
Being located at the smooth mist of nozzle ejection on the smooth spray beam 10 of water smoke pounces on and catches dust, second suction opeing 31 by entrance side exhaust column 27 aspirates then, the entrance side exhaust column also aspirates the dust that belt steel surface is brought by raw material above the wrinkle resistant roller 17 simultaneously, guarantees the cleaning of raw band steel.Outlet side exhaust column 26 and entrance side exhaust column 27 planisher seal bootr rear up are merged into total exhaust column, and total exhaust column connects the exhausting blower fan.
In smooth production process, the nozzle of the smooth injection apparatus of water smoke (comprising the atomized water spray beam) sprays smooth mist to backing roll and working roll roll gap place, utilizes the fog that sprays to pounce on and catches the dust that fills the air in the formation process.Aspirate the air port in the entrance side redesign, near the dust of roller surface not only can be aspirated near roller surface and near the band steel in the air port, can also aspirate the belt steel surface raw material and bring dust, prevents that the raw material surface dust from entering rolling district and polluting roll.At outlet side, utilize the anti-guide plate lower ending opening that twines as the suction air port, near belt steel surface, back belt steel surface and roller surface dust are rolled in suction.Like this, new suction process not only guarantees to roll back band steel and roller surface cleaning, can also prevent that raw band steel surface dust from entering rolling pollution roll, thereby guarantees belt steel surface cleaning in the smoothing and rolling process.
Experiment: by rolling 10 hours contrast experiments of continuous formation.Adopt technology of the present invention, 1), residual smooth spot do not appear in belt steel surface.And the smooth injection method of conventional wet, the smooth spot of small amount of residual appears in belt steel surface.Explanation has solved the smooth liquid residue problem that smooth liquid channelling brings by changing smooth liquid spray beam and smooth liquid eject position, reduces and pollutes, promotes smooth product surface quality.2), dust, fog in the wet planisher of the present invention is sucked away, do not have dust, fog disorderly the string phenomenon produce rolling belt steel surface cleaning.And the smooth ventilation and dust removal of conventional wet, dust, fog have disorderly string phenomenon, and rolling belt steel surface has dust, and the smooth spot of small amount of residual occurs.Illustrate that the present invention can improve suction effect, and effect is remarkable.
Claims (6)
1. the water smoke flattening process in the cold rolling wet smooth production is characterized in that it comprises the steps:
1) water smoke is smooth:
1. the entrance side at wet planisher is provided with the smooth injection apparatus of water smoke, and the roll gap of the spout of the nozzle of the smooth injection apparatus of water smoke between working roll and backing roll, nozzle are positioned at the roll gap 200～400mm place from working roll and backing roll;
2. when wet planisher skin pass rolling began, nozzle ejection went out vaporific smooth liquid; When skin pass rolling finished, nozzle stopped to spray;
2) adopt the smooth suction dust pelletizing system suction of water smoke dedusting:
1. planisher outlet side anti-of will wetting twines guide plate and is hollow passageway in adopting, the anti-lower port that twines guide plate is first suction opeing, first suction opeing passes through line 50-200mm apart from the band steel, the anti-upper port that twines guide plate is connected with an end of outlet side exhaust column, the other end of outlet side exhaust column is connected with total exhaust column, and total exhaust column links to each other with the exhausting blower fan; The entrance side of wet planisher is provided with the entrance side exhaust column, the lower port of entrance side exhaust column is second suction opeing, second suction opeing is positioned at work roll surface and belt steel surface place, second suction opeing is from work roll surface 100～200mm, second suction opeing is from belt steel surface 50～200mm, and the upper port of entrance side exhaust column is connected with total exhaust column;
2. when wet planisher skin pass rolling begins, start the exhausting blower fan, first suction opeing aspirates and rolls back belt steel surface and roll gap place dust, and the nozzle ejection of the smooth injection apparatus of second suction opeing suction water smoke goes out the fog and the surface dust of being with the steel supplied materials after vaporific smooth liquid surrounds dust; When skin pass rolling finishes, stop the exhausting blower fan.
2. the water smoke flattening process in the cold rolling wet smooth production according to claim 1, it is characterized in that: described nozzle is provided with air input and smooth liquid input, and nozzle is provided with the mixing valve that is used to regulate air mass flow and smooth flow quantity; When wet planisher skin pass rolling begins, to nozzle input compressed air and smooth liquid, open and regulate mixing valve, making the smooth flow quantity that flows into each nozzle is 10～44.7L/h, the air mass flow that flows into each nozzle is 5.2～13m3/h, smooth liquid and compressed air mix at the nozzle place, and spray with aerosol by the spout of nozzle; When skin pass rolling finishes, stop the conveying of compressed air and smooth liquid, close mixing valve.
3. the water smoke flattening process in the cold rolling wet smooth production according to claim 1, it is characterized in that: the smooth injection apparatus of the described water smoke of step 1) comprises the smooth spray beam of water smoke (10), telescoping mechanism, smooth mist jet device; Smooth mist jet device is fixed on the smooth spray beam of water smoke (10), the smooth spray beam of water smoke (10) by telescoping mechanism be connected crossbeam (15) and link to each other, the two ends of crossbeam (15) are separately fixed on the frame (16) of wet planisher.
4. the water smoke flattening process in the cold rolling wet smooth production according to claim 3, it is characterized in that: described smooth mist jet device comprises nozzle (18), air header (20), smooth liquid house steward (21); Air header (20) and smooth liquid house steward (21) are along the axis arranged of working roll (4), air header (20) and smooth liquid house steward (21) all are fixed on the smooth spray beam of water smoke (10), the one end sealing of air header (20), the other end of air header (20) is connected with air delivery hose (22), smooth liquid house steward's (21) end sealing, smooth liquid house steward's (21) the other end is connected with smooth liquid delivery hose (22); The number of described nozzle (18) is 7～11, the roll gap of the spout of all nozzles (18) between working roll (4) and backing roll (3); The air input of nozzle (18) is in charge of with air header (20) by air and is connected, and the smooth liquid input of nozzle (18) is in charge of with smooth liquid house steward (21) by smooth liquid and is connected, and nozzle (18) is provided with mixing valve (19).
5. the water smoke flattening process in the cold rolling wet smooth production according to claim 3, it is characterized in that: described telescoping mechanism comprises first hydraulic cylinder (11), base plate (12), slide bar (13), coulisse (14), the bottom of base plate (12) is fixed on and connects on the crossbeam (15), base plate (12) is provided with coulisse (14), and an end of slide bar (13) passes behind the chute on the coulisse (14) hinged with the smooth spray beam of water smoke (10); The cylinder body of first hydraulic cylinder (11) is linked to each other with base plate (12) by the hydraulic cylinder seat, and the piston rod of first hydraulic cylinder (11) and the smooth spray beam of water smoke (10) are hinged.
6. the water smoke flattening process in the cold rolling wet smooth production according to claim 1, it is characterized in that: step 2) the smooth suction dust pelletizing system of described water smoke, it comprises anti-twine guide plate (24), entrance side exhaust column (27), prevent twining the outlet side that guide plate (24) is positioned at wet planisher, it is hinged that the piston rod of 2 movable hydraulic cylinders (25) prevents twining guide plate (24) respectively, and the cylinder body of movable hydraulic cylinder (25) is linked to each other with frame (16) by the hydraulic cylinder seat; Anti-twining is hollow passageway in the guide plate (24), the anti-lower port that twines guide plate (24) is first suction opeing (30), first suction opeing (30) is positioned at the top of band steel by line, first suction opeing (30) passes through line 50-200mm apart from the band steel, the anti-upper port that twines guide plate (24) is connected with an end of outlet side exhaust column (26), the other end of outlet side exhaust column (26) is connected with total exhaust column, and total exhaust column links to each other with the exhausting blower fan; The entrance side of wet planisher is provided with entrance side exhaust column (27), entrance side exhaust column (27) is fixedlyed connected with frame (16) by fixed cross beam (28), the lower port of entrance side exhaust column (27) is second suction opeing (31), second suction opeing (31) is positioned at work roll surface and belt steel surface place, second suction opeing (31) is from work roll surface 100～200mm, second suction opeing (31) is from belt steel surface 50～200mm, and the upper port of entrance side exhaust column (27) is connected with total exhaust column.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110237635.XA CN102284495B (en) | 2011-08-18 | 2011-08-18 | Water mist pinch pass rolling process in cold rolling wet pinch pass rolling production |
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Cited By (4)
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| CN102671948A (en) * | 2012-05-04 | 2012-09-19 | 中冶南方工程技术有限公司 | Process for leveling liquid films |
| CN102764765A (en) * | 2012-08-08 | 2012-11-07 | 莱芜钢铁集团有限公司 | Cold rolling mill |
| CN102825106A (en) * | 2012-09-13 | 2012-12-19 | 山东沃德动力科技有限公司 | Stainless steel strip straightening machine |
| CN112139289A (en) * | 2020-09-08 | 2020-12-29 | 鞍钢股份有限公司 | Method for eliminating splash of photofinishing liquid |
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| CN102825106A (en) * | 2012-09-13 | 2012-12-19 | 山东沃德动力科技有限公司 | Stainless steel strip straightening machine |
| CN112139289A (en) * | 2020-09-08 | 2020-12-29 | 鞍钢股份有限公司 | Method for eliminating splash of photofinishing liquid |
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| CN102284495B (en) | 2014-08-13 |
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