The present invention discloses a control method of hot mill coiler side guides based on spark recognition, where the side guides are adjusted according to the width of sparks from the friction between the hot rolled strip (20) and the side guides (11). An industrial camera (9) is provided obliquely above the side guides (11), and a detection system implements a real-time analysis on the images taken by the industrial camera and determines the magnitude of sparks generated on either side of the side guides according to the spark width. For each unilateral side guide, it is adjusted according to the spark width M.sub.S corresponding to that side guide (11). For said unilateral side guide (11), the deviation of the single-side spark width ΔM.sub.S is obtained according to ΔM.sub.S=M.sub.S−M.sub.aim. The position adjustment magnitude ΔW.sub.S of the unilateral side guide (11) can be obtained according to formula (I). And the pressure adjustment magnitude ΔP.sub.S of the unilateral side guide (11) can be obtained according to formula (II). This method allows the hot rolled strip (20) always in the relative center of the steel coil, reduces the wear of the side guides (11), avoids various defects of the steel coil, and makes the steel coil in good shape.

The present invention discloses a control method of hot mill coiler side guides based on spark recognition, where the side guides are adjusted according to the width of sparks from the friction between the hot rolled strip (20) and the side guides (11). An industrial camera (9) is provided obliquely above the side guides (11), and a detection system implements a real-time analysis on the images taken by the industrial camera and determines the magnitude of sparks generated on either side of the side guides according to the spark width. For each unilateral side guide, it is adjusted according to the spark width M.sub.S corresponding to that side guide (11). For said unilateral side guide (11), the deviation of the single-side spark width ΔM.sub.S is obtained according to ΔM.sub.S=M.sub.S−M.sub.aim. The position adjustment magnitude ΔW.sub.S of the unilateral side guide (11) can be obtained according to formula (I). And the pressure adjustment magnitude ΔP.sub.S of the unilateral side guide (11) can be obtained according to formula (II). This method allows the hot rolled strip (20) always in the relative center of the steel coil, reduces the wear of the side guides (11), avoids various defects of the steel coil, and makes the steel coil in good shape.

An aluminum plate coiling device capable of coiling an extruded and rolled aluminum plate without generating distortion or deformation of the aluminum plate is disclosed. The aluminum plate coiling device has a simple structure, thereby being capable of achieving a reduction in installation space and a reduction in installation cost.

The invention relates to a device (1) and a method for laterally guiding a slab (2) on a transport track (3), comprising a first guide rule (4) and a second guide rule (5). The guide rules (4, 5) are arranged opposite each other on both sides of the transport track (3) and are each connected to at least one actuating drive (6) so as to move in a direction of a width of the transport track (3). The actuating drive can be actuated perpendicularly to the transport direction (7) of the slab (2), wherein the respective longitudinal axis (4.sub.L, 5.sub.L) of the first guide rule (4) and/or the second guide rule (5) can be positioned at a specified angle () relative to the transport direction (7) of the slab (2). The first and/or the second guide rule (4, 5) has at least one contact roller (8) which can be brought into contact with a lateral edge of the slab (2) in order to guide and/or compress the slab (2).

Provided is an apparatus of removing foreign substances from a hot-rolled steel strip, including a reverse direction injection unit provided to inject high-pressure water in the reverse direction of a moving direction of the strip toward the strip moving to the entrance of the winder by the side guide, wherein the reverse direction injection unit includes a plurality of upper reverse direction injection nozzles arranged along a width direction of the strip to inject high-pressure water to an upper surface of the strip, and the plurality of upper reverse direction injection nozzles is arranged such that an interval of the upper reverse direction injection nozzles located in a central area along the above arrangement direction is narrower than an interval of the upper reverse direction injection nozzles located in both edge areas.