Roller aerosol cooling method and device

Abstract

A roller aerosol cooling method and a device thereof belong to the technical field of steel rolling process; the cooling medium is the compressed aerosol and the cooling effect is obvious after a roller is cooled with aerosol under the high temperature; the roller temperature does not exceed 50 DEG C after being cooled, therefore, the method and the device can substitute the conventional high-pressure water cooling mode. By adopting the process, high-pressure cooling water and high-pressure gas are respectively delivered to the place above the roller through a high-pressure cooling water pipe and a compressed gas pipe and the high-pressure gas in the compressed gas pipe is used for converting the high-pressure cooling water into mixed high-pressure aerosol at the entrance of a muzzle and the mixed high-pressure aerosol is sprayed out from the muzzle; the aerosol is sprayed on the roller in a fanning-shaped way for cooling (as shown). The fanning number and aerosol can be adjusted according to the factual situation. The invention can be used for various rollers in the metallurgy field and has excellent cooling effect on anomalous roller.

Description

technical field [0001] The invention relates to a roll air mist cooling method and device, and belongs to the technical field of steel rolling technology. Background technique [0002] The current H-shaped steel rolling production line adopts a high-pressure water cooling method for the cooling of the roll system. Using high-pressure water cooling, while cooling the roll, water will inevitably be brought into the web, and the web will be water-cooled accordingly. The resulting problems are: [0003] (1) Due to the long-term existence of cooling water, the temperature drop of the H-beam web is serious, and it is difficult to ensure the final rolling temperature of the web. [0004] (2) Because the web is thin and has a large heat transfer surface, the temperature of the web is too low, which aggravates the problem of uneven temperature of the large H-shaped steel. [0005] At the same time, the cooling effect directly affects the service life of the roll. During the rolli...

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Problems solved by technology

[0003] (1) Due to the long-term existence of cooling water, the temperature drop of the H-shaped steel web is serious, and it is difficult to ensure the final rolling temperature of the web

[0004] (2) Because the web is thin and the heat transfer surface is large, the temperature of the web is too low, which aggravates the problem of uneven temperature of the large H-shaped steel

[0007] Preliminary literature search shows that the air mist cooling roll is currently limited to laboratory research, and there is no report on the air mist cooling roll in the hot rolling mill

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