SU1146114A1 - Header for cooling strips - Google Patents

Abstract

COLDING PLATE FOR STRIPPING, containing a filling tank with guide pipes for supplying a cooler, characterized in that, in order to effectively use the cooler by adjusting the cross-sectional area of the guide pipes, they are equipped with a section made of flexible material and installed against these sections interchangeable clamps with a mechanism for moving them in a direction perpendicular to the axis of the nozzles.

Description

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ko The invention relates to rolling production and can be used to perform various heat treatment processes for rolled products in part when performing Accelerated Water Cooling Hot Rolling operations, mainly with accelerated cooling of hot rolled strips on an extension roll table of a continuous broadband mill. A known collector for cooling sheet metal, into a switchable filling tank with rows of nozzles for supplying cooler l. A disadvantage of this device is that the flow control of the cooler is carried out by changing the pressure (pressure) of water in the filling tank, and therefore there is a discrepancy between the water flow and the cross-sectional area of the ports of the nozzles. Compliance is necessary to ensure continuity (continuity) of a water jet falling on a strip. With a small water flow and a large port nozzle, water flows to the hot metal as separate droplets, and with a large water flow and a small section of the water nozzle opening periphery in all directions beyond the cooled strip. With the correspondence between the water supply and the cross-sectional area of the nozzle openings, a continuous jet of flowing odes punches a layer of used, waste water on the hot strip and takes heat from the surface of the moving hot metal with maximum efficiency, therefore this device does not provide for the use of coolant (water with the existing regulation of its supply from the collector in the process of cooling the hot metal with the change of the scientific research institute of its parameters. Also known is the collector for cooling the strips containing The filling tank with cooler supply nozzles. The device simplifies controlling the flow rate of the cooler from the collector by changing the level of cooling fluid in the tank without using special means of regulation, but also increases the efficiency of the cooling process of the hot metal 2. However, the well-known collector is labor-intensive. Due to the need to install several horizontal rows of nozzles, the adjustment range is carried out in several stages depending on The purpose of the invention is to efficiently use a cooler by adjusting the cross-sectional area of the guide pipes. This goal is achieved in that the collector for cooling the strips containing the filling tank with guide pipes for supplying the cooler, the guide pipes of The section is made of flexible material and interchangeable clamps installed against these sections with a movement mechanism dx in the direction perpendicular to the axis of the nozzles. . FIG. 1 schematically shows a collector, a section; in fig. 2 - 5 sections of guide pipes with clamps in times: personal options for adjusting the cross-sectional area of guide pipes. The manifold contains a filling tank 1, a branch pipe 2 with an elastic part 3, clamps 4 with movable threaded rods 5, supports 6 with moving levers 7, guides 8, a lever movement .9, rotating screws 10. The cooled metal is indicated by 11 The rollers of the roller table 12, the water jet 13. The collector can be placed in an installation for cooling hot stripes above an outlet roller table of a continuous broadband mill and works in the process of cooling a hot metal as follows. The cross section of the manifold nozzles is adjusted to a predetermined specific flow rate of water. To do this, using the actuator 9, rotate the screws 10 (made with different thread directions — left and right). The screw is moved by the levers 7 and the lunettes 6, which move or push the clamps 4. By moving the elbows, the elastic part of the nozzles 2 changes its cross-section to the required size (Fig. 2-5). After adjusting the nozzles to the required size and shape. This section opens the water supply through the collector to the cooled metal. A correspondence is reached between the water flow rate and the required cooling rate of the hot metal. When changing the cross section of hot metal and other parameters (movement speed, cooling rate, etc.), a signal is sent to the motion drive of the rest, which shift the clamps (or side apart) and adjust the cross-section of the steam pipe to the required water flow. through the collector. In addition, the prism 4 can be set to different values from the wall of the lunettes 6 (Fig. 5). In this case, when approaching or expanding the lutes, the clamps displace the elastic nozzles by different values. The sections of the pipes will be different, which allows to regulate the flow of water along the width of the cooled strip. For example, water that has in the central part 4, 4 of the strip flows to its edges. Therefore, more intensive heat removal occurs along the edges of the strip. A smaller amount of water can be supplied to the edges of the strip by reducing the cross-section of the extreme nozzles. When the narrow-width strips are cooled, the extreme nozzles are completely closed with the clamps. Thus, when a collector is introduced into the cooling device lines above the outlet roll table of a continuous broadband mill during cooling of hot rolled strips before winding them into coils, water is saved due to its rational use of the width of the strip when cooling strips of different widths, rational use depending on changing the 1xC parameters of the rolled metal (transfer speed, chemical composition, etc.), as well as obtaining a metal with guaranteed mechanical properties.

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Claims (1)

COLLECTOR FOR COOLING A STRIP containing a filling tank with guiding nozzles for supplying a cooler, characterized in that, for the purpose of efficiently using the cooler by adjusting the cross-sectional area of the guiding nozzles, the latter are equipped with a section made of flexible material and interchangeable clamps mounted against these sections moms with a mechanism for their movement in the direction perpendicular to the axis of the nozzles.