Aside spray method for cooling the steel strip after hot rolling, comprising the following steps: a) providing side spray devices (30, 30, 30) behind each of cooling sections after hot rolling (20, 20, 20), the side spray devices being staggered along the two sides of an run out roller table (10), each side spray device comprising at least two spray units, each spray unit comprising spray tubes (2, 2, 2) and nozzles on the tubes, the spray tubes being in parallel and vertically arranged along running direction of the steel strip, the covering ranges of adjacent nozzles are partially overlapped, and a total spray coverage of nozzles covers the width of the entire run out roller table; side spray water collecting devices (40, 40, 40) are provided on the other side of the run out roller table that is opposite to side spray devices, so that side spray water being collected by the water collecting devices; b) controlling the side spray devices in a mode of open-in-pairs, i.e., side spray devices on either side of the run out roller table must be started simultaneously. The side spray method can effectively purge the residual water on the surface of steel strip having different width specifications, improves the cooling uniformity, and reduces splashes as far as possible to avoid adverse effects on the environment and electrical equipment.

The present disclosure discloses a steel strip coiling temperature control method, a steel strip coiling temperature control device and a steel strip processing system, which relate to the technical field of steel strip production. The method comprises: seeking a corresponding speed compensation coefficient according to a target thickness of the steel strip and a target temperature parameter; seeking a corresponding speed gain coefficient from a second correspondence table according to a steel strip speed; correcting the steel strip speed based on the speed compensation coefficient and the speed gain coefficient to obtain a corrected steel strip speed; and adjusting a cooling efficiency of a laminar flow cooling apparatus according to the corrected steel strip speed. With the method, the cooling efficiency of the laminar flow cooling apparatus can be dynamically adjusted according to the steel strip speed, thereby solving the problem that that there is a great difference in coiling temperature between a tail section of the steel strip and a front section of the steel strip caused by the steel strip throwing process, and reducing the amount of cutting loss of the steel strip.

The present invention discloses an annular cooling device for large-scale cylindrical shell, which comprises a plurality of inner jet devices and outer jet devices; the inner jet devices are arranged inside the cylindrical shell along the inner periphery; the outer jet devices are arranged outside the cylindrical shell along the outer periphery; each inner jet device and each outer jet device are oppositely arranged; the inner jet devices are used for spraying cooling medium to the inner wall of the cylindrical shell; the outer jet devices are used for spraying the cooling medium to the outer wall of the cylindrical shell; and the spray ranges of each inner jet device and each outer jet device in the axial direction of the cylindrical shell are both greater than the length of the cylindrical shell.

A rolling mill with a cooling zone for cooling and scissors for cross-cutting metal strips, which are preferably made of steel. A method and a device enables metal strips with thicknesses >4 mm and/or metal strips made of high-strength materials to be cross-cut by the scissors arranged after a production line and a cooling zone. In the method, the metal strip (6) is cooled in the cooling zone (10) to a specified temperature profile in the longitudinal direction of the metal strip (6) such that the metal strip (6) has a higher temperature in the region of the strip head of the trailing metal strip portion (31) and the strip base of the leading metal strip portion (32) than in the upstream and downstream regions.

A cooling device for cooling a material to be cooled, comprising an inlet for a cooling medium conducted into a first, upper chamber of the cooling device. First conduits are provided which conduct the cooling medium from the upper chamber into a second, lower chamber of the cooling device. The upper chamber is separated from the lower chamber by a wall. Second conduits are provided which conduct the cooling medium from the lower chamber to at least one outlet opening for cooling medium, via which the cooling medium is discharged onto the material to be cooled.

In a cooling path, hot rolled material composed of metal is cooled. The cooling path has a pump which extracts coolant from a coolant reservoir and feeds said coolant via a line system to a number of coolant outlets which are controlled by means of valves positioned upstream of the coolant outlets. A control device of the cooling path determines activation states (Ci) for the valves for a respective point in time taking into consideration coolant flows (Wi) which are intended to be discharged via the coolant outlets at the respective point in time, in conjunction with a working pressure (pA) of the coolant prevailing at the inlet side of the valve. By adding the coolant flows (Wi), said control device determines a total coolant flow (WG).

The invention relates to a method for cooling a metallic item (1) by discharging a cooling medium from a cooling bar (2) onto the item (1), wherein the cooling medium is discharged through a slot (3) in the cooling bar (2). According to the invention, in order to achieve improved cooling, during the cooling process the width (B) of the slot (3) in the conveying direction (F) of the item (1) or of the cooling bar (2) is altered in order to bring the cooling power of the cooling medium to a desired or predefined level by open-loop or closed-loop control. In addition, the invention relates to a cooling bar.

A cooling device with variable cooling rate for treating metal materials, in particular for cooling steel sheets in plate mills, hot strip mills or thermal treatment lines, by means of a spray nozzle cooling system. The cooling device consists of at least two cooling bars one of each two cooling bars being situated on the lower side and the other on the upper side transversely to the sheet travel direction of the sheet and centrally between two roller table rollers and includes a spray nozzle cooling system with which a plurality of full jet nozzles and a plurality of full cone nozzles are associated, the full jet nozzles being arranged symmetrically to the full cone nozzles. A method for operating the cooling device according to the disclosure

The present invention relates to an apparatus for tempering hot articles, in particular an apparatus for homogeneous, contactless tempering of primarily non-endless surfaces that are to be tempered; the tempering apparatus has at least one tempering blade or a tempering cylinder; the tempering blade or tempering cylinder is embodied as hollow and has a tempering blade nozzle edge or a plurality of tempering cylinders arranged in a row; in the nozzle edge at least one nozzle is provided, which is aimed at an article to be tempered; and at least seven tempering blades are arranged in such a way that the flow pattern on the surface to be tempered forms a honeycomb-like structure; and to a method therefor.

A cooling system (2) for cooling metal rolling stock. A plurality of cooling bars (8) for applying a coolant onto the rolling stock, one dedicated coolant supply line (36) for each cooling bar (8), and a feed system (9) for guiding the coolant to the coolant supply lines (36). Each cooling bar (8) is connected to the feed system (9) via a dedicated coolant supply line (36). A bypass line (48, 52) for discharging a coolant flow from the feed system (9), is connected on the input side to a connection element (51, 53) of the feed system (9).