Laminar flow cooling upper spray blocking device

Abstract

The invention relates to a laminar flow cooling upper spray blocking device which comprises a plurality of groups of lower spray devices, and each group of lower spray device comprises a collecting pipe, a plurality of spray pipes, at least one screw rod, two sliding blocks and two blocking plates, wherein the spray pipes are evenly distributed on the collecting pipes; the at least one screw rod is arranged at the upper part of the collecting pipe in a spanning way along the length direction of the collecting pipe; the two sliding blocks are provided with internal screw and are respectively connected with the screw rods by screw thread; the two blocking plates are respectively fixed with the sliding blocks, extend to an outlet of the collecting pipe; and the collecting pipe is movably shielded by a sliding mechanism. The laminar flow cooling upper spray blocking device can correspondingly build lower spray gap laminar flow corresponding to the width of a belt material channel according to the requirements of the cooling technique of the strip steel with different widths, and reduces the temperature reduction of the side of the strip steel by the corresponding change of a laminar flow cooling area along the width direction; and by adopting automatic lubrication, the device has the structure which is convenient for maintenance, and ensures the uniformity of the profile shape, the mechanical performance, the temperature and the phase change of the strip steel along the width direction.

Description

technical field [0001] The invention relates to a shielding device, in particular to a laminar cooling upper spray shielding device used in the hot rolling cooling process. Background technique [0002] The laminar flow cooling device is used in the hot rolling and continuous rolling mill production lines of iron and steel enterprises. Its main function is to quickly cool the strip steel exported from finish rolling according to the target temperature set by coiling to ensure the product performance of the strip steel. [0003] Taking the hot rolling mill as an example, its laminar flow cooling device has a total of 76 sets of cooling headers (corresponding to one set of upper and lower). Among them, the first 68 groups are the main cooling section, and the last 8 groups are the refined cooling section. It is generally divided into several cooling zones, and each cooling zone has its own main cooling section and the cooling section of the fine cooling section connected in s...

AI Technical Summary

Problems solved by technology

This method adopts the method for shielding the edge of the laminar flow cooling header, and provides a solution to the problem that the temperature of the edge of the strip is greatly reduced, but there are also shortcomings in this method. Obviously, the shortcoming of this prior art is that : When producing narrow strip steel, a large amount of cooling water is wasted in vain, which is not conducive to the saving of production resources

[0010] The inventor conceived to develop a laminar flow cooling upper spray shielding device, which can establish a gap laminar flow corresponding to the width of the strip channel according to the cooling process requirements of different widths of the strip, and realize the corresponding change in the width of the laminar flow cooling area. Thereby adjusting the area of ​​cooling water in the width direction of the channel, reducing the temperature drop at the edge of the strip, and ensuring the uniformity of the shape, mechanical properties, temperature and phase transition of the strip in the width direction; and the existing edge shielding technology Different, while achieving the same effect, it can also avoid the waste of cooling water resources. After online search, no identical or similar patented technology has been found so far.

Images