CN102189111A - Roll gap lubricating method for producing ultrathin hot rolling strip steel with semi-endless rolling technology - Google Patents
Roll gap lubricating method for producing ultrathin hot rolling strip steel with semi-endless rolling technology Download PDFInfo
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Abstract
The invention discloses a roll gap lubricating method for producing ultrathin hot rolling strip steel with a semi-endless rolling technology. The opening of an electromagnetic control valve is controlled so that 50-100 ml of lubricating oil flows through an oil supply pipe and enters an oil-water mixer every minute; the opening of a water quantity regulation control valve is controlled so that 40-60 L of circulating water flows through a water supply pipe and enters the oil-water mixer every minute; and the oil-water mixture in the oil-water mixer is injected to the roll surfaces of an upper working roll and a lower working roll through a nozzle on a spraying header respectively. The first rolling mill and the seventh rolling mill are not lubricated in the hot rolling process of strip steel, and the head and tail of the strip steel are not lubricated. When the head of the strip steel reaches the next rolling mill, the electromagnetic control valve on the previous rolling mill is opened; and when the tail of the strip steel reaches the last rack, all electromagnetic control valves are closed, and the working roll cooling water at the entrance sides from the second rolling mill to the sixth rolling mill is closed at the same time. The roll gap lubricating method can reduce roll wear, ease vibration of the rolling mill, guarantee stable rolling process and improve the shape and quality of a strip steel plate.
Description
Technical field
The present invention relates to a kind ofly on sheet billet continuous casting and rolling production line, adopt semi-endless rolled technology to produce thickness to be the roll gap lubrication method of h≤1.2mm ultra-thin hot-rolled strip steel, to belong to hot-strip rolling lubrication field.
Background technology
Along with the upgrading of product structure, market to the obvious lifting of ultra-thin specification strip demand and to reducing operation, reducing cost and that energy consumption requires is strong, make the ultra-thin strip product of hot rolling of " with hot Dai Leng " receive much concern.
(also there is certain difficulty in thickness≤1.2mm) to traditional rolling mill practice, and advanced semi-endless rolled technology is produced ultra-thin specification product and had remarkable advantages to producing ultra-thin hot-rolled strip steel; But because of semi-endless rolled technology (technology) is that employing length is the continuous casting billet of 2～7 times pair rolling, with the rolling ultra-thin specification band steel of the continuous casting billet of length like this time product (band steel) and roll are rised appreciably time of contact, the wearing and tearing of breaker roll, hot convexity and strip shape quality will produce obvious influence.In order to reduce this harmful effect, must adopt the roll gap lubrication technology.
Before the present invention, when continuous casting and rolling production line (being the CSP production line) is gone up the semi-endless rolled technology of employing (technology) production band steel, the working roll roll gap is realized lubricated technology also seldom, especially (the roll gap lubrication technology of thickness h≤1.2mm) yet there are no report to ultra-thin hot-rolled strip steel, mainly be because when producing ultra-thin hot-rolled strip steel between each frame tension force fluctuate easily, and can cause system vibration when linking to each other frame passing to, cause band steel dimensions precision seriously to exceed, even also can cause broken belt and damage equipment.Therefore, guarantee that ultra-thin hot-rolled strip steel stable under the roll gap lubrication condition is the key of roll gap lubrication technology controlling and process.
The domestic lubricating arrangement that adopts on sheet billet continuous casting and rolling production line has ZL200810031458.8 " lubricating device for hot rolled steel strip rolling technology " at present, its top working roll and bottom working roll are controlled the switching of oil mass and oil circuit respectively by fuel feeding measuring pump, solenoid electric valve, pressure-reducing valve, water yield adjusting control valve are controlled the hydraulic pressure and the flow of recirculated water respectively, oil and water mix in oil-water mixer after the nozzle ejection on the spray thrower to upper and lower working roll roll surface, is lubricated roll.
It is 200610124130.1 " a kind of methods of lubrication in heat-rolling process " that application number is arranged, it is that to adopt thickness on sheet billet continuous casting and rolling production line be that 50～60mm, width are that 1000～1350mm and tapping temperature are that 1050-1180 ℃ the continuous casting billet thickness that is used for manufacturing a finished product is the band steel of 1.2～12.7mm, roll surface to backing roll and working roll in the hot-strip process of producing this thickness sprays oil water mixture, realizes lubrication in heat-rolling process.(the roll gap lubrication problem of h≤1.2mm) is mentioned and for adopting semi-endless rolled technology (technology) to produce ultra-thin specification band steel.
Summary of the invention
The object of the present invention is to provide a kind of can stable rolling ultra-thin (the roll gap lubrication method of hot-strip of h≤1.2mm) of process, the strip shape quality that alleviates roll wear, alleviate rolling mill vibration and improve ultra-thin size hot-rolled strip and the semi-endless rolled technology production of the usefulness of surface quality.
For finishing above-mentioned purpose, the technical solution used in the present invention is: the rear end that oil feed pump is connected fuel tank, the port of export of oil feed pump is connected with the first fuel feeding measuring pump and the second fuel feeding measuring pump, first fuel feed pump is connected between the first fuel feeding measuring pump and first solenoid electric valve, second fuel feed pump is connected between the second fuel feeding measuring pump and second solenoid electric valve, and the port of export of first solenoid electric valve and second solenoid electric valve links to each other with the arrival end of first oil-water mixer and second oil-water mixer respectively.First feed pipe that is communicated with pressure-reducing valve links to each other with the arrival end of first oil-water mixer behind first Water supply switch valve and first water yield adjusting control valve, and second feed pipe that is communicated with pressure-reducing valve links to each other with the arrival end of second oil-water mixer behind second Water supply switch valve and second water yield adjusting control valve.First oil-water mixer connects first spray thrower through flexible pipe, second oil-water mixer connects second spray thrower through flexible pipe, be installed on its quantity on first spray thrower and be positioned at the top of the other last water discharging board of top working roll more than or equal to 1 nozzle, be installed on its quantity on second spray thrower and be positioned at the below of the other following water discharging board of bottom working roll more than or equal to 1 nozzle, last cooling water collector is between top working roll other first spray thrower and last water discharging board, and following cooling water collector is between bottom working roll other second spray thrower and following water discharging board.Control the aperture of first solenoid electric valve and second solenoid electric valve well, making the flow of lubrication that enters first oil-water mixer and second oil-water mixer behind first fuel feed pump and second fuel feed pump is 50～100ml/min, control the aperture of first water yield adjusting control valve and second water yield adjusting control valve, making the quantity of circulating water that enters first oil-water mixer and second oil-water mixer behind flow through first feed pipe and second feed pipe is 40～60l/min.The roll surface of the nozzle ejection of the oil water mixture in first oil-water mixer on first spray thrower, the roll surface of the nozzle ejection of the oil water mixture in second oil-water mixer on second spray header to bottom working roll to top working roll.
In the course of hot rolling of band steel, do not realize lubricated to the top working roll of first rolling mill of finishing tandem rolling unit and the 7th rolling mill and the roll gap of bottom working roll.
The head of band steel and afterbody are not lubricated.
In the course of hot rolling of band steel, when the head of band steel reaches the frame of next rolling mill, open first solenoid electric valve and second solenoid electric valve on the last rolling mill, when the afterbody of band steel arrives the 7th rolling mill frame, close first solenoid electric valve and second solenoid electric valve from second rolling mill to the, six rolling mills.
In the course of hot rolling of band steel, close from the last cooling water collector of second rolling mill to the, six rolling mill entrance sides and the cooling water on the following cooling water collector.
The roll gap lubrication method that the semi-endless rolled technology of a kind of usefulness that adopts as above technical scheme to provide is produced ultra-thin hot-rolled strip steel compared with prior art, technique effect is:
1. described roll gap lubrication method is not a main purpose to reduce mill rolling force, mainly be to control the range of decrease of each frame roll-force, thereby guaranteed the stability of rolling ultra-thin size hot-rolled band steel by the uniformity that unlatching order and oil film to cycle water, lubricating oil product, oil-water ratio, oil water mixture injection valve spray;
2. alleviated roll wear, made roll improve 3～5 times service life;
3. make band steel center thickness difference along its length between 20～40 μ m;
4. the strip crown that has guaranteed the band steel is between 20～30 μ m.
Description of drawings
Fig. 1 is that the semi-endless rolled technology of a kind of usefulness of the present invention is produced process layout's schematic diagram of the roll gap lubrication method of ultra-thin hot-rolled strip steel, also is Figure of abstract of the present invention.
Fig. 2 is the schematic layout pattern of each rolling mill of finishing tandem rolling unit.
The specific embodiment
Below in conjunction with drawings and Examples the specific embodiment of the present invention is described in further detail.
As shown in Figure 1, the roll gap lubrication method that the semi-endless rolled technology of a kind of usefulness of the present invention is produced ultra-thin hot-rolled strip steel is realized by lubricating arrangement, it comprises (lubricating) fuel tank 1, oil feed pump 2, the first fuel feeding measuring pump 3 and the second fuel feeding measuring pump 3A, first oil-water mixer 4 and the second oil-water mixer 4A, first solenoid electric valve 5 and the second solenoid electric valve 5A, first water yield adjusting control valve 6 and second water yield adjusting control valve 6A, first spray thrower 7 and the second spray thrower 7A, last cooling water collector 8 and following cooling water collector 8A, last water discharging board 9 and following water discharging board 9A, first Water supply switch valve 12 and the second Water supply switch valve 12A, first feed pipe 13 and the second feed pipe 13A, first fuel feed pump 14 and the second fuel feed pump 14A and pressure-reducing valve 15, wherein top working roll 10 and bottom working roll 10A can be appointed as the first rolling mill F1 of the finishing tandem rolling unit of producing ultra-thin hot-rolled strip steel 11, the second rolling mill F2, the 3rd rolling mill F3, the 4th rolling mill F4, the 5th rolling mill F5, top working roll and the bottom working roll of the 6th rolling mill F6 and the 7th rolling mill F7, (as shown in Figure 2) for the present invention, owing to the first rolling mill F1 and the 7th rolling mill F7 are not adopted roll gap lubrication technology, second a rolling mill F2 at the finishing tandem rolling unit, the 3rd rolling mill F3, the 4th rolling mill F4, the other roll gap lubrication device of installing of the top working roll 10 of the 5th rolling mill F5 and the 6th rolling mill F6 and bottom working roll 10A.
Oil feed pump 2 is connected the rear end of fuel tank 1, the port of export of oil feed pump 2 is connected with the first fuel feeding measuring pump 3 and the second fuel feeding measuring pump 3A, the first fuel feeding measuring pump 3 links to each other with first solenoid electric valve 5 through first fuel feed pump 14, the second fuel feeding measuring pump 3A links to each other with the second solenoid electric valve 5A through the second fuel feed pump 14A, and the port of export of first solenoid electric valve 5 and the second solenoid electric valve 5A links to each other with the arrival end of first oil-water mixer 4 and the second oil-water mixer 4A respectively.First feed pipe 13 that is communicated with pressure-reducing valve 15 links to each other with the arrival end of first oil-water mixer 4 behind first Water supply switch valve 12 and first water yield adjusting control valve 6, and the second feed pipe 13A that is communicated with pressure-reducing valve 15 links to each other with the arrival end of the second oil-water mixer 4A behind the second Water supply switch valve 12A and second water yield adjusting control valve 6A.From the lubricating oil of first fuel feed pump 14 with enter first oil-water mixer 4 after recirculated water from first feed pipe 13 mixes, enter the second oil-water mixer 4A after the recirculated water of lubricating oil with the second feed pipe 13A that comes from the second fuel feed pump 14A mixes.
The oil property of the described lubricating oil that is provided through oil feed pump 2 by fuel tank 1 is extremely important for the effect of roll gap lubrication, makes the mixed oil water mixture of lubricating oil and recirculated water will have certain viscosity.
Control the aperture of first solenoid electric valve 5 and the second solenoid electric valve 5A well, making the flow of lubrication that enters first oil-water mixer 4 and the second oil-water mixer 4A behind first fuel feed pump 14 and the second fuel feed pump 14A is 50～100ml/min, control the aperture of first water yield adjusting control valve 6 and second water yield adjusting control valve 6A well, making the quantity of circulating water that enters first oil-water mixer 4 and the second oil-water mixer 4A behind flow through first feed pipe 13 and the second feed pipe 13A is 40～60l/min.
The oil water mixture that is come out by first oil-water mixer 4 enters first spray thrower 7 through flexible pipe, and dress quantity is more than or equal to 1 nozzle on first spray thrower 7 of top working roll 10 opposite faces; The oil water mixture that is come out by the second oil-water mixer 4A enters the second spray thrower 7A through flexible pipe, quantity is housed more than or equal to 1 nozzle on the second spray thrower 7A of bottom working roll 10A opposite face.The roll surface that the oil water mixture in first oil-water mixer 4 is ejected into top working roll 10 with a plurality of nozzles on first spray thrower 7 carries out roll gap lubrication to top working roll 10, with a plurality of nozzles on the second spray thrower 7A roll surface that the oil water mixture among the second oil-water mixer 4A is ejected into bottom working roll 10A is carried out roll gap lubrication to bottom working roll 10A.Nozzle on first spray thrower 7 and the second spray thrower 7A is selected the FUIFIX-660.674.17 nozzle of the Lechler (rein in the Rec) of big opening for use, can strengthen the water yield of roll gap lubrication.The spray angle of oil water mixture, injector spacing and nozzle should guarantee to the distance of top working roll 10 and bottom working roll 10A roll surface not to be interrupted phenomenon and overlapping phenomenon between the inlet zone of each nozzle.In addition, the head of band steel 11 and afterbody are not lubricated, so when the head of band steel 11 arrives next rolling mill, will open first solenoid electric valve 5 and the second solenoid electric valve 5A on the last rolling mill, for example when arriving the 3rd rolling mill F3, opens on the rolling head of going into the band steel 11 that the second rolling mill F2 rerolls of the first rolling mill F1 first solenoid electric valve 5 and the second solenoid electric valve 5A on the second rolling mill F2 when continuous casting billet, when arriving the 4th rolling mill F4, opens on the head of band steel 11 first solenoid electric valve 5 and the second solenoid electric valve 5A on the 3rd rolling mill F3 ... and open first solenoid electric valve 5 and the second solenoid electric valve 5A on the 6th rolling mill F6 when arriving the 7th rolling mill F7 when the head of band steel 11, when arriving the 7th rolling mill F7, the afterbody of being with steel 11 then closes first solenoid electric valve and the second solenoid electric valve 5A from the second rolling mill F2 to the, the six rolling mill F6 simultaneously.
Be positioned at be installed on nozzle on first spray thrower 7 in the top of other the last water discharging board 9 of top working roll 10, be positioned at be installed on nozzle on the second spray thrower 7A in the below of the following water discharging board 9A by the bottom working roll 10A.When the oil water mixture from first oil-water mixer 4 is ejected into the roll surface of top working roll 10 and when the oil water mixture that the second oil-water mixer 4A comes is ejected into the roll surface of bottom working roll 10A, most of ROLLING OIL forms oil film rapidly by the deformed area in the course of hot rolling of band steel 11, chemical change does not take place and keep greasy property.
Last cooling water collector 8 is installed between first spray thrower 7 and last water discharging board 9 on top working roll 10 sides, following cooling water collector 8A is installed between bottom working roll the 10A other second spray thrower 7A and following water discharging board 9A.In order to guarantee lubricant effect with roll gap between the top working roll 10 of steel 11 each frame in course of hot rolling and bottom working roll 10A, must close the last cooling water collector 8 of the second rolling mill F2 to the, six rolling mill F6 entrance sides and the cooling water among the following cooling water collector 8A, have only after the roll gap lubrication of the second rolling mill F2 to the, six rolling mill F6 finishes, just enable cooling water collector 8 and descend cooling water collector 8A respectively top working roll 10 and bottom working roll 10A to be cooled off.
From the greasing of the second rolling mill F2 to the, six rolling mill F6, make regular check on water discharging board 9 and reach the work effect of water discharging board 9A down, oil water mixture is directly trickled to band steel 11, whether the cooling water of making regular check on simultaneously among cooling water collector 8 and the following cooling water collector 8A seepage occurs, check the duty of first solenoid electric valve 5 and the second solenoid electric valve 5A, whether leak from the first fuel feeding measuring pump 3 and from next (rolling) lubricating oil of the second fuel feeding measuring pump 3A.
Behind the working roll roll gap lubrication, the range of decrease of each rolling mill roll-force is: the second rolling mill F2 is that the 11～13%, the 3rd rolling mill F3 is that the 8～10%, the 4th rolling mill F4 is that the 6～8%, the 5th rolling mill F5 is that the 5～6% and the 6th rolling mill F6 is 3～5%.
Embodiment 1: being 6 times with length is 1.2mm ultra-thin hot-rolled strip steel (strip) to pair rolling continuous casting billet production thickness
Start the oil feed pump 2 that is installed on fuel tank 1 side, lubricating oil is sent into the first fuel feeding measuring pump 3 respectively with oil feed pump 2 and the second fuel feeding measuring pump 3A (is controlled the lubricating oil of top working rolls 10 by the first fuel feeding measuring pump 3, lubricating oil by second fuel feeding measuring pump 3A control bottom working roll 10A), open first solenoid electric valve 5 and the second solenoid electric valve 5A simultaneously, lubricating oil is sent into first oil-water mixer 4 and the second oil-water mixer 4A respectively through first fuel feed pump 14, the second fuel feed pump 14A.Start pressure-reducing valve 15, after filtering recirculated water decompression back one tunnel enters first oil-water mixer 4 through first feed pipe 13, and another road second feed pipe 13A enters the second oil-water mixer 4A.
Control lubricating oil and the circulating water flow of the second rolling mill F2 and the 3rd rolling mill F3: the flow of lubrication that enters first oil-water mixer 4 and the second oil-water mixer 4A is that 45ml/min and circulating water flow are 50l/min; Control lubricating oil and the circulating water flow of the 4th rolling mill F4, the 5th rolling mill F5 and the 6th rolling mill F6: the lubricants capacity that enters first oil-water mixer 4 and the second oil-water mixer 4A is that 60ml/min and quantity of circulating water are 55l/min.The oil water mixture that forms sprays in the roll surface of top working roll 10 and bottom working roll 10A equably along top working roll 10 or along the length direction of bottom working roll 10A.When the roll gap to the top working roll 10 of the second rolling mill F2, the 3rd rolling mill F3, the 4th rolling mill F4, the 5th rolling mill F5 and the 6th rolling mill F6, bottom working roll 10A is lubricated, close the last cooling water collector 8 of the second rolling mill F2 to the, six rolling mill F6 entrance sides and the cooling water of following cooling water collector 8A.
Roll gap is after lubricating, the roll-force range of decrease of the second rolling mill F2 is that the roll-force range of decrease of 13%, the three rolling mill F3 is that the roll-force range of decrease of the 10%, the 4th rolling mill F4 is that the roll-force range of decrease of the 8%, the 5th rolling mill F5 is that the roll-force range of decrease of the 6% and the 6th rolling mill F6 is 5%.
In the operation of rolling of band steel 11, rolling stable, rolling mill vibration alleviates, and band steel 11 center thickness deviations are 20～40 μ m, and plate face convexity is 20～30 μ m.
Embodiment 2: being 4 times with length is 1.0mm ultra-thin hot-rolled strip steel (strip) to pair rolling continuous casting billet production thickness
Start the oil feed pump 2 that is installed on fuel tank 1 side, lubricating oil is sent into the first fuel feeding measuring pump 3 respectively with oil feed pump 2 and the second fuel feeding measuring pump 3A (is promptly controlled the lubricating oil of top working rolls 10 by the first fuel feeding measuring pump 3, lubricating oil by second fuel feeding measuring pump 3A control bottom working roll 10A), open first solenoid electric valve 5 and the second solenoid electric valve 5A simultaneously, lubricating oil is sent into first oil-water mixer 4 and the second oil-water mixer 4A respectively through first fuel feed pump 14, the second fuel feed pump 14A.Start pressure-reducing valve 15, after filtering recirculated water decompression back one tunnel enters first oil-water mixer 4 through first feed pipe 13, and another road second feed pipe 13A enters the second oil-water mixer 4A.
Control lubricating oil and the circulating water flow of the second rolling mill F2 and the 3rd rolling mill F3: the flow of lubrication that enters first oil-water mixer 4 and the second oil-water mixer 4A is that 40ml/min and circulating water flow are 50l/min; Control lubricating oil and the circulating water flow of the 4th rolling mill F4, the 5th rolling mill F5 and the 6th rolling mill F6: the flow of lubrication that enters first oil-water mixer 4 and the second oil-water mixer 4A is that 55ml/min and circulating water flow are 57l/min.The oil water mixture that forms sprays in the roll surface of top working roll 10 and bottom working roll 10A equably along the length direction of top working roll 10 and bottom working roll 10A.When the roll gap to the top working roll 10 of the second rolling mill F2, the 3rd rolling mill F3, the 4th rolling mill F4, the 5th rolling mill F5 and the 6th rolling mill F6, bottom working roll 10A is lubricated, close the cooling water of cooling water collector 8 and following cooling water collector 8A on the second rolling mill F2 to the, the six rolling mill F6 entrance sides.
Roll gap after lubricated, the roll-force range of decrease of the second rolling mill F2 be the 11%, the 3rd rolling mill F3 rolling for the range of decrease be that the roll-force range of decrease of the 8%, the 4th rolling mill F4 is that the roll-force range of decrease of the 6%, the 5th rolling mill F5 is that the roll-force range of decrease of the 5% and the 6th rolling mill F6 is 3%.
In the operation of rolling of band steel 11, rolling stable, rolling mill vibration alleviates, and band steel 11 center thickness deviations are 20～35 μ m, and plate face convexity is 20～30 μ m.
Claims (4)
1. roll gap lubrication method of producing ultra-thin hot-rolled strip steel with semi-endless rolled technology, oil feed pump (2) is connected the rear end of fuel tank (1), the port of export of oil feed pump (2) is connected with the first fuel feeding measuring pump (3) and the second fuel feeding measuring pump (3A), first fuel feed pump (14) is connected between the first fuel feeding measuring pump (3) and first solenoid electric valve (5), second fuel feed pump (14A) is connected between the second fuel feeding measuring pump (3A) and second solenoid electric valve (5A), and the port of export of first solenoid electric valve (5) and second solenoid electric valve (5A) links to each other with the arrival end of first oil-water mixer (4) and second oil-water mixer (4A) respectively; First feed pipe (13) that is communicated with pressure-reducing valve (15) links to each other with the arrival end of first oil-water mixer (4) behind first Water supply switch valve (12) and first water yield adjusting control valve (6), and second feed pipe (13A) that is communicated with pressure-reducing valve (15) links to each other with the arrival end of second oil-water mixer (4A) behind second Water supply switch valve (12A) and second water yield adjusting control valve (6A); First oil-water mixer (4) connects first spray thrower (7) through flexible pipe, second oil-water mixer (4A) connects second spray thrower (7A) through flexible pipe, be installed on first spray thrower (7) and go up its quantity and be positioned at the top of other the last water discharging board (9) of top working roll (10), be installed on second spray thrower (7A) and go up its quantity is positioned at the other following water discharging board (9A) of bottom working roll (10A) more than or equal to 1 nozzle below more than or equal to 1 nozzle; Last cooling water collector (8) is positioned between top working roll (10) other first spray thrower (7) and last water discharging board (9), and following cooling water collector (8A) is positioned between bottom working roll (10A) other second spray thrower (7A) and following water discharging board (9A); It is characterized in that: control the aperture of first solenoid electric valve (5) and second solenoid electric valve (5A) well, making the flow of lubrication that enters first oil-water mixer (4) and second oil-water mixer (4A) behind first fuel feed pump (14) and second fuel feed pump (14A) is 50～100ml/min, control the aperture of first water yield adjusting control valve (6) and second water yield adjusting control valve (6A), making the circulating water flow that enters first oil-water mixer (4) and second oil-water mixer (4A) behind flow through first feed pipe (13) and second feed pipe (13A) is 40～60l/min; The roll surface of the nozzle ejection of the oil water mixture in first oil-water mixer (4) on first spray thrower (7), the roll surface of the nozzle ejection of the oil water mixture in second oil-water mixer (4A) on second spray header (7A) to bottom working roll (10A) to top working roll (10).
2. the roll gap lubrication method that the semi-endless rolled technology of a kind of usefulness according to claim 1 is produced ultra-thin hot-rolled strip steel is characterized in that: do not realize lubricated to first rolling mill (F1) of finishing tandem rolling unit and the roll gap of top working roll (10) on the 7th rolling mill (F7) and bottom working roll (10A) in the course of hot rolling of band steel (11).
3. the roll gap lubrication method that the semi-endless rolled technology of a kind of usefulness according to claim 1 is produced ultra-thin hot-rolled strip steel, it is characterized in that: in the course of hot rolling of band steel (11), when reaching the frame of next rolling mill, opens on the head of band steel (11) first solenoid electric valve (5) and second solenoid electric valve (5A) on the last rolling mill, first solenoid electric valve (5) and second solenoid electric valve (5A) on when the afterbody of being with steel (11) arrives the 7th rolling mill (F7) frame, closing from second rolling mill (F2) to the 6th rolling mill (F6).
4. the roll gap lubrication method that the semi-endless rolled technology of a kind of usefulness according to claim 1 is produced ultra-thin hot-rolled strip steel, it is characterized in that: in the course of hot rolling of band steel (11), close the last cooling water collector (8) from second rolling mill (F2) to the 6th rolling mill (F6) entrance side and the cooling water of following cooling water collector (8A).
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| CN105414190A (en) * | 2015-12-29 | 2016-03-23 | 马鞍山钢铁股份有限公司 | Roller gap lubricating device of hot continuous rolling mill |
| CN109604350A (en) * | 2018-12-21 | 2019-04-12 | 攀钢集团西昌钢钒有限公司 | A method of improving hot-strip Quality of Tail |
| CN109622617A (en) * | 2018-12-07 | 2019-04-16 | 薛传亮 | A kind of Rolling roller and its component |
| CN109622616A (en) * | 2018-12-07 | 2019-04-16 | 薛传亮 | A kind of rolling equipment |
| CN109940046A (en) * | 2019-04-19 | 2019-06-28 | 中国重型机械研究院股份公司 | A kind of hot oil edge spraying system of aluminum recycling |
| CN115283444A (en) * | 2022-10-09 | 2022-11-04 | 江苏常宝钢管股份有限公司 | Method for cooling roller of continuous rolling mill |
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| CN105414190A (en) * | 2015-12-29 | 2016-03-23 | 马鞍山钢铁股份有限公司 | Roller gap lubricating device of hot continuous rolling mill |
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| CN109622616A (en) * | 2018-12-07 | 2019-04-16 | 薛传亮 | A kind of rolling equipment |
| CN109622617B (en) * | 2018-12-07 | 2020-06-16 | 温州曼昔维服饰有限公司 | Rolling roller assembly |
| CN109604350A (en) * | 2018-12-21 | 2019-04-12 | 攀钢集团西昌钢钒有限公司 | A method of improving hot-strip Quality of Tail |
| CN109604350B (en) * | 2018-12-21 | 2020-11-17 | 攀钢集团西昌钢钒有限公司 | Method for improving tail quality of hot-rolled strip steel |
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Application publication date: 20110921 |