CN116603861A

CN116603861A - Steel rolling uncoiling device and head deviation processing method

Info

Publication number: CN116603861A
Application number: CN202310746477.3A
Authority: CN
Inventors: 杨智洁; 何凯; 胡学忠; 张陆鹏; 田林; 谭刚; 万晓松; 戚怀忠
Original assignee: Pangang Group Panzhihua Steel and Vanadium Co Ltd
Current assignee: Pangang Group Panzhihua Steel and Vanadium Co Ltd
Priority date: 2023-06-21
Filing date: 2023-06-21
Publication date: 2023-08-18

Abstract

The invention belongs to the technical field of hot rolled plate processing, and discloses a steel rolling uncoiling device and a head deviation treatment method, which comprises the following steps: the roller way is provided with a feed inlet and a discharge outlet for conveying steel rolling, and a rotatable bending roller set, a forming roller, a first carrier roller set, a pinch roller and a stabilizer are arranged between the feed inlet and the discharge outlet; the bending roller set is used for bending steel rolling; the forming roller is arranged behind the bending roller set along the direction from the feed inlet to the discharge outlet and is used for winding the bent steel rolling. The device is provided with the bending roller set, the forming roller, the first carrier roller set and the second carrier roller set, in a steel rolling production line, rolled steel can be rolled after rough rolling through the bending roller set and the forming tube, and then the rolled steel coil is uncoiled through the first carrier roller set and the second carrier roller set, so that the device is ready for next steel rolling finish rolling.

Description

Steel rolling uncoiling device and head deviation processing method

Technical Field

The invention belongs to the technical field of hot rolled plate processing, and particularly relates to a steel rolling uncoiling device and a head deviation treatment method.

Background

The hot rolling box is one of main equipment of a hot rolling plate mill, is arranged between a roughing mill and a finishing mill, has the functions of coiling and uncoiling a raw material intermediate billet rolled by the roughing mill and entering the next working procedure, and has the functions of; 1. because of the coiling effect, the head and tail directions of the intermediate blank are exchanged, so that the head and tail temperature difference is balanced, and meanwhile, the temperature of the belt blank is kept warm to slow down; 2. shortening the rolling line, improving the production efficiency, and 3, having the functions of breaking scales and rapidly removing scales on the surface of the strip steel. The device mainly comprises two parts, namely a coiling station and an uncoiling station. The coiling station mainly comprises the steps of carrying out twice impact molding on the head of the strip steel through a bending roller and a molding roller guard plate, and then achieving the coiling condition through a certain speed. During unwinding, the head is opened under the auxiliary action of the 1# coil supporting roller (A roller and B roller) through the action of the unwinding arm and the insertion of the unwinding knife.

However, before the entrance of the intermediate billet finishing mill opened by the hot rolling box, the phenomenon of strip steel head deviation can occur, the heat preservation side guide plate or the entrance side guide plate is frequently impacted, the rolling rhythm is stopped, the strip billet is pulled back to be cut again, then enters the finishing mill group and the like, the step can be repeated for a plurality of times, the strip billet cutting loss is increased, the yield is reduced, and sometimes, scrap steel and the like can be directly produced due to untimely treatment due to steel reasons. The main treatment method is as follows: 1. enlarging the opening size of the set side guide plate; 2. the clamping force is increased by using a stabilizer; 3. adjusting the control parameters of the front guide plate; the above treatment method has the following defects: 1) The opening degree of the F1 side guide plate is enlarged, so that the strip steel enters the rolling mill, but single-side waves, double-side waves and even scrap steel are generated in the strip steel rolling process due to the fact that the strip steel deviates from the rolling center line; 2) The clamping force is increased by the stabilizer, so that the coil shape is improved to a certain extent, but faults are increased at the same time, such as oil cylinder explosion, pipeline explosion, bolt fracture and the like, and the practical problem is not solved. 3) The control parameters of the front guide plate are adjusted to be asynchronous, one side moves first and the other side moves later, and the centering of the whole coil deviates, so that the uncoiling head part enters the rolling mill. These measures have a certain improvement of unwinding and deviation of the hot coil box, but the hot coil box cannot be put into operation according to normal function settings, which is functionally disadvantageous. Not only increases the maintenance amount of equipment, but also generates a large amount of cutting loss and scrap steel, and the problem is that the uncoiling deviation of the hot coil box still exists, so that the method for finding the uncoiling deviation-free method of the hot coil box is particularly important.

Disclosure of Invention

In order to solve at least one problem in the background technology, the invention provides a steel rolling uncoiling device and a head deviation processing method.

In order to achieve the above purpose, the present invention adopts the following technical scheme:

a steel rolling uncoiling device comprising:

the roller way is provided with a feed inlet and a discharge outlet for conveying steel rolling, and a rotatable bending roller set, a forming roller, a first carrier roller set, a pinch roller and a stabilizer are arranged between the feed inlet and the discharge outlet;

the bending roller set is used for bending steel rolling;

the forming roller is arranged behind the bending roller set along the direction from the feed inlet to the discharge outlet and is used for winding the bent steel rolling;

the first carrier roller group is arranged behind the forming roller along the direction from the feed inlet to the discharge outlet and is used for uncoiling rolled steel;

the pinch roll is arranged behind the first carrier roller set along the direction from the feed inlet to the discharge outlet and is used for conveying the uncoiled steel rolling;

the stabilizer is installed between the forming roller and the first carrier roller group and is used for controlling the centering degree.

Preferably, a feed roller is provided at the feed opening for guiding the rolled steel into the roller table.

Preferably, the roller way is also provided with a guide roller group and a bending roller group in sequence;

the guide roller set is positioned behind the feed inlet and comprises two guide rollers capable of swinging, and the guide rollers are sequentially arranged along the direction from the feed inlet to the discharge outlet;

the bending roller set is positioned in front of the forming roller and comprises three bending rollers, and the centers of the three bending rollers form three vertexes of a triangle.

Preferably, the first carrier roller group comprises two first carrier rollers, and the first carrier rollers can slide along the direction from the feed inlet to the discharge outlet.

Preferably, a coil pushing roller is further installed between the two first carrier rollers, and the coil pushing roller is in running fit with the roller way and swings relative to the roller way.

Preferably, a second carrier roller group, a tail-separating roller, a pinch roller and a leveling roller are also arranged on the roller way in turn in a rotating way;

the second carrier roller group is positioned behind the first carrier roller group and comprises a plurality of second carrier rollers with different diameters, and the second carrier rollers are arranged along the direction from the feed inlet to the discharge outlet and the diameters of the second carrier rollers are sequentially increased;

the split tail roll is used for guiding the rolled steel into the pinch roll;

the leveling rollers are used for leveling the rolled steel passing through the pinch rollers.

Preferably, the pinch rolls comprise an upper pinch roll and a lower pinch roll, and roll gaps of the upper pinch roll and the lower pinch roll are used for passing through rolled steel after uncoiling.

Preferably, the discharge port is provided with a conveying roller set, the conveying roller set is rotatably arranged on the roller way and comprises a plurality of conveying rollers along the direction from the feed port to the discharge port, and the conveying rollers are used for conveying the uncoiled steel rolling out of the roller way.

Preferably, the steel rolling uncoiling device further comprises an uncoiler, and the uncoiler is arranged on the roller way and used for uncoiling rolled steel.

A treatment method for deviation of a rolling uncoiling head of a rolling steel comprises the following steps:

pressing the bending roller set to zero until the roller gap of the bending roller set meets a first condition;

checking the position centering of the two sides of the bending roller set, and if position deviation occurs, adjusting, pressing against zero until the roller gap of the bending roller set meets a first condition and the centering controlled by the stabilizer meets a second condition;

measuring and adjusting levelness of the first carrier roller set at the uncoiling position and the coiling position until the levelness deviation meets a third condition;

measuring and adjusting the parallelism of the axial leads between the two first carrier rollers of the first carrier roller group until the parallelism deviation of the first carrier roller group meets a fourth condition;

and measuring and adjusting the parallelism of the pinch rolls until the parallelism deviation of the pinch rolls meets a fifth condition.

Preferably, the first condition is 0 to 0.5mm;

the second condition is-5 mm;

the third condition is 0-1 mm;

the fourth condition is 0-1 mm;

the fifth condition is 0 to 1mm.

The invention has the beneficial effects that:

1. the device is characterized in that a bending roller set, a forming roller, a first carrier roller set and a second carrier roller set are arranged, in a steel rolling production line, rolled steel can be rolled after rough rolling through the bending roller set and a forming tube, then the rolled steel coil is uncoiled through the first carrier roller set and the second carrier roller set, and the device is ready for next steel rolling finish rolling;

2. according to the invention, through adjusting equipment such as the bending roller set and the first carrier roller set, elements such as the centering degree, the levelness and the parallelism degree are adjusted, so that the production pause risk is reduced, the safety risk is reduced, the production efficiency is improved, and the method has good market popularization value and prospect in the field.

Additional features and advantages of the invention will be set forth in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. The objectives and other advantages of the invention may be realized and attained by the structure particularly pointed out in the written description and drawings.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions of the prior art, the following description will briefly explain the drawings used in the embodiments or the description of the prior art, and it is obvious that the drawings in the following description are some embodiments of the present invention, and other drawings can be obtained according to these drawings without inventive effort for a person skilled in the art.

Fig. 1 shows a schematic structural view of a rolled steel uncoiling device of the present invention;

FIG. 2 shows an offset plot of the centering of the rolled steel into the rolled steel uncoiling device of the present invention;

FIG. 3 illustrates a track centerline offset map of the present invention;

fig. 4 shows a schematic view of the parallelism of the first idler set of the present invention;

fig. 5 shows a schematic view of the levelness of the first idler set of the present invention.

In the figure: 1. a feed roller; 2. a guide roller set; 3. a bending roller group; 4. an uncoiler; 5. a forming roller; 6. a first idler set; 7. a pushing roll; 8. the second carrier roller group; 9. pinch rolls; 10. a tail-separating roller; 11. leveling rollers; 12. a conveying roller set; 13. a stabilizer; 14. and (5) heat-preserving side guide plates.

Detailed Description

For the purpose of making the objects, technical solutions and advantages of the embodiments of the present invention more apparent, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is apparent that the described embodiments are some embodiments of the present invention, but not all embodiments of the present invention. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.

The steel rolling uncoiling device comprises a roller way, a feeding roller 1, a guide roller set 2, a bending roller set 3, an uncoiler 4, a forming roller 5, a first carrier roller set 6, a coil pushing roller 7, a second carrier roller set 8, a pinch roller 9, a tail separating roller 10, a leveling roller 11, a conveying roller set 12, a stabilizer 13 and a heat preservation side guide plate 14, wherein the structures are described one by one.

As shown in fig. 1, in this embodiment, the left end of the roller path is a feed inlet, the right end is a discharge outlet, rolled steel enters from the feed inlet and is finally output from the discharge outlet, and a rotatable guide roller set 2, a bending roller set 3, a forming roller 5, a first roller set 6, a second roller set 8, a tail separating roller 10, a pinch roller 9, a leveling roller 11 and a conveying roller set 12 are sequentially arranged between the feed inlet and the discharge outlet.

Further, the feed roller 1 is installed at the position of the feed port, and functions to introduce the rolled steel into the roller bed. Then the steel rolling can reach deflector roll group 2, and deflector roll group 2 comprises two deflector rolls in this embodiment, sets gradually along feed inlet to discharge gate direction, and two deflector rolls can also swing in the upper left side in figure 1 when rotating, and after deflector roll group 2 swings to certain position, can carry the steel rolling to be located on the crooked roller group 3 of deflector roll group 2 rear side.

Further, the bending roll set 3 is used for bending steel rolling and is located before the forming roll 5, and comprises three bending rolls, and the centers of the three bending rolls form three vertexes of a triangle. Specifically, as can be seen from fig. 1, the bending roller set 3 is located at the upper right side of the guide roller set 2 and at the upper left side of the forming roller 5, the rolled steel passes through the guide roller set 2 and enters the roll gap of the bending roller set 3 from the upper right side, then the rolled steel head is bent, the convex surface is right, the concave surface is left, and then the rolled steel head reaches the forming roller 5.

Further, the forming roller 5 is arranged behind the bending roller set 3 along the direction from the feed inlet to the discharge outlet and is used for winding the bent rolled steel; specifically, the curved rolled steel contacts the forming roller 5, and the forming roller 5 rotates clockwise to drive the rolled steel to be rolled until the rolling process is finished.

Further, the first carrier roller group 6 is arranged behind the forming roller 5 along the direction from the feed inlet to the discharge outlet and is used for uncoiling rolled steel; specifically, the first roller set 6 includes two first rollers, and divide into 1A and 1B, and first roller set 6 has a rolling position and an uncoiling position on the roll table, and first roller can slide along feed inlet to discharge gate direction, and first roller set 6 need remove the rolling position when needs rolling, and when needs uncoil, first roller set 6 need right side remove the uncoiling position.

The pushing roller 7 is also installed between the two first carrier rollers, and the pushing roller 7 is in running fit with the roller way and swings relative to the roller way. The pushing roller 7 can swing reciprocally and can push rolled steel to move to the right.

Further, the pinch rolls 9 are fed with rolled steel by the pinch rolls 10, and the pinch rolls 9 are fed with rolled steel by the leveling rolls 11.

In fig. 1, the heat-preserving side guide 14 is located at the front side of the tail roll 10, and serves to prevent excessive temperature reduction of the rolled steel during the uncoiling process, and has a certain heat-preserving effect.

Further, the second carrier roller group 8 is located behind the first carrier roller group 6 and comprises a plurality of second carrier rollers with different diameters, and the diameters of the second carrier rollers are sequentially increased along the direction from the feeding port to the discharging port.

Further, the pinch roller 9 is arranged behind the first carrier roller set 6 along the direction from the feed inlet to the discharge outlet and is used for conveying the uncoiled steel rolling. Specifically, the pinch rolls 9 include an upper pinch roll and a lower pinch roll, and roll gaps of the upper pinch roll and the lower pinch roll are used for passing through rolled steel after uncoiling.

Further, the conveying roller set 12 is located at the position of the discharge hole in fig. 1, and includes a plurality of conveying rollers along the direction from the feed hole to the discharge hole, and is used for conveying the uncoiled rolled steel out of the roller way.

Further, the steel rolling uncoiling device further comprises an uncoiler 4, and the uncoiler 4 is arranged on the roller way and is used for uncoiling rolled steel; specifically, in fig. 1, the uncoiler 4 is installed between the guide roller set 2 and the bending roller set 3, and when the uncoiler 4 uncoils, the head of the uncoiler can rotate to the uncoiling position of the first carrier roller set 6, and then the tail end of the rolled steel coil is pressed, so that the rolled steel coil is opened for uncoiling.

s1: and (3) pressing the bending roller set 3 to zero until the roller gap of the bending roller set 3 is 0-0.5 mm.

In S1, the bending roller is mechanically pressed by the stabilizer 13, the data is detected, the roller gap value is increased based on the detected data, and whether the actual data matches the set data is measured. In addition, the adjustment of the roll gap is performed by a standard measuring block, if deviation exists, the adjustment is performed by a gasket, and then zero position is cleared. In addition, a stabilizer 13 is installed between the forming roller 5 and the first carrier roller group 6. And (3) increasing the roll gap value by taking the zero position as a reference, and measuring by using an inner clamping ruler.

S2: checking the position centering degree of the two sides of the bending roller set 3, and if position deviation occurs, adjusting, pressing against zero for zero correction until the roller gap of the bending roller set 3 is 0-0.5 mm and the centering degree is-5 mm.

In S2, after the stabilizer 13 of the hot box (i.e., the apparatus of fig. 1) controls the bending roller set 3 to mechanically press against, the position alignment on both sides is checked, and the positional deviation is adjusted by mechanical limitation. And after adjustment, pressing and clearing, and measuring the positioning precision based on the adjustment: 5mm; one side is +/-2.5 mm; center distance deviation: 5mm, single side is 2.5mm; parallelism deviation: 5mm, single side 2.5mm.

In addition to the need to adjust the centering in the stabilizer 13, the centering is also adjusted at the start of unwinding, as shown in fig. 2, in which the rolling mill is shifted in centering during unwinding, and the shift to the left is denoted as "-", and the shift to the right is denoted as "+".

It should be further noted that the steel plate rule is used for measuring data after mechanical pressing, if deviation exists, the gasket can be adjusted, and then zero position is cleared. And (3) taking the zero position as a reference to enlarge the opening degree value, then checking the centering data at the two sides, and detecting the centering data by using a steel plate ruler or a tape measure.

S3: and measuring and adjusting levelness of the first carrier roller group 6 at the uncoiling position and the coiling position until the levelness deviation is 0-1 mm.

In S3, the levelness of the roller 1A and the roller 1B of the first roller set 6 needs to be measured, and in particular, the level of the roller 1B needs to be measured at two positions, namely, a winding position and an unwinding position, and specifically, a frame level meter can be used for measurement.

S4: and measuring and adjusting the parallelism of the axial leads between the two first carrier rollers of the first carrier roller group 6 until the parallelism deviation of the first carrier roller group 6 is 0-1 mm.

In the step S4, the parallelism of the axis between the two carrier rollers is measured, the steel plate ruler can be pressed against the roller surface to make the highest point mark, two points are made on each roller by the method, and the distance between the two rollers is measured after the connection.

Further, as shown in fig. 3, taking the first roller set 6 as an example, the broken roller is the first roller after offset, a distance difference in the horizontal direction occurs between the broken roller and the solid roller, and the distance difference may cause the track center line to be offset, so that the conveying path of the rolled steel is offset.

As shown in fig. 4, when the parallelism deviation is 0 in the normal state on the left side of the drawing, and when the parallelism deviation is greater than 0 on the right side, it is clear from the drawing that the deviation of the 1B roller causes a difference in distance between the center lines of the projected apexes of the 1A roller and the 1B roller (i.e., the parallelism deviation), and in the present invention, it is necessary to control the difference in distance within the target range.

In addition, as shown in fig. 5, the left side is the state of the 1B roller under normal condition, the right side is the state of the levelness deviation, the levelness is measured by using the commercially available levelness measuring instrument, and the levelness deviation is controlled within the target range, so that the levelness requirement of the steel rolling can be met.

S5: the parallelism of the pinch rolls 9 was measured and adjusted until the parallelism deviation of the pinch rolls 9 was 0 to 1mm.

It should be noted that, the non-parallel axes will form a crossing angle, which causes a certain angle deviation between the center line of the steel coil and the rolling center line, the head of the strip steel will deflect after being opened under the action of the clamping force, the deflection will gradually increase after passing through the extension of the rolling line, and finally the phenomenon of strip steel deviation striking equipment will appear, see fig. 3 in detail. The detection is carried out according to the steps, and the measurement points cannot be reduced. Meanwhile, a measurement ledger is established according to periodic measurement, the root of the problem can be quickly found out through comparison of measurement data, and measures are timely taken for treatment.

Although the invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A steel rolling uncoiling device, characterized by comprising:

the roller way is provided with a feed inlet and a discharge outlet for conveying steel rolling, and a rotatable bending roller set (3), a forming roller (5), a first carrier roller set (6), a pinch roller (9) and a stabilizer (13) are arranged between the feed inlet and the discharge outlet;

the bending roller set (3) is used for bending steel rolling;

the forming roller (5) is arranged behind the bending roller set (3) along the direction from the feed inlet to the discharge outlet and is used for winding the bent steel rolling;

the first carrier roller group (6) is arranged behind the forming roller (5) along the direction from the feed inlet to the discharge outlet and is used for uncoiling rolled steel;

the pinch roll (9) is arranged behind the first carrier roller group (6) along the direction from the feed inlet to the discharge outlet and is used for conveying the uncoiled steel rolling;

the stabilizer (13) is arranged between the forming roller (5) and the first carrier roller set (6) and is used for controlling the centering degree.

2. A steel rolling uncoiling device according to claim 1, characterized in that a feed roller (1) is provided at the feed opening, which feed roller (1) is used for guiding steel rolling into the roller table.

3. The steel rolling uncoiling device and head deviation processing method according to claim 2, wherein a guide roller set (2) and a bending roller set (3) are further arranged on the roller way in sequence;

the guide roller group (2) is positioned behind the feeding hole and comprises two guide rollers capable of swinging, and the guide rollers are sequentially arranged along the direction from the feeding hole to the discharging hole;

the bending roller set (3) is positioned in front of the forming roller (5) and comprises three bending rollers, and the centers of the three bending rollers form three vertexes of a triangle.

4. A steel rolling uncoiling device according to claim 1, characterized in that the first idler set (6) comprises two first idlers, which are slidable in the direction from the feed opening to the discharge opening.

5. A steel rolling uncoiling device according to claim 4, characterized in that a coil pushing roller (7) is further arranged between the two first carrier rollers, and the coil pushing roller (7) is in running fit with the roller way and swings relative to the roller way.

6. A steel rolling uncoiling device according to claim 1, characterized in that a second carrier roller set (8), a tail-separating roller (10), a pinch roller (9) and a leveling roller (11) are also rotatably arranged on the roller way in sequence;

the second carrier roller group (8) is positioned behind the first carrier roller group (6) and comprises a plurality of second carrier rollers with different diameters, and the second carrier rollers are arranged along the direction from the feed inlet to the discharge outlet and the diameters of the second carrier rollers are sequentially increased;

the split rolls (10) are used for guiding rolled steel into the pinch rolls (9);

the leveling rollers (11) are used for leveling the rolled steel passing through the pinch rollers (9).

7. A steel rolling uncoiling device according to claim 1, characterized in that the pinch rolls (9) comprise an upper pinch roll and a lower pinch roll, the roll gap of which is used for the uncoiled steel rolling to pass through.

8. A steel rolling uncoiling device according to any one of claims 1-7, characterized in that a conveying roller set (12) is arranged at the discharge port, and the conveying roller set (12) is rotatably arranged on the roller way and comprises a plurality of conveying rollers in the direction from the feed port to the discharge port and is used for conveying uncoiled steel rolling out of the roller way.

9. A steel rolling and uncoiling device according to claim 8, characterized in that it further comprises an uncoiler (4), said uncoiler (4) being mounted on a roller table for uncoiling rolled steel.

10. A method of treating deviation of a rolled steel unwinding head, characterized by the steps of:

pressing the bending roller set (3) to zero until the roller gap of the bending roller set (3) meets a first condition;

checking the position centering degree of the two sides of the bending roller set (3), and if position deviation occurs, adjusting, pressing against zero for correction until the roller gap of the bending roller set (3) meets a first condition and the centering degree controlled by the stabilizer (13) meets a second condition;

measuring and adjusting levelness of the first carrier roller group (6) at the uncoiling position and the coiling position until the levelness deviation meets a third condition;

measuring and adjusting the parallelism of the axial leads between two first carrier rollers of the first carrier roller group (6) until the parallelism deviation of the first carrier roller group (6) meets a fourth condition;

and measuring and adjusting the parallelism of the pinch rolls (9) until the parallelism deviation of the pinch rolls (9) meets a fifth condition.

11. The method for treating deviation of a steel rolling uncoiling head according to claim 10, wherein the first condition is 0-0.5 mm;

the second condition is-5 mm;

the third condition is 0-1 mm;

the fourth condition is 0-1 mm;

the fifth condition is 0 to 1mm.