Spiral nozzle used in controlled rolling and controlled cooling technology and spiral type water feeding method

Abstract

The invention relates to a spiral nozzle used in controlled rolling and controlled cooling technology and a spiral type water feeding method. A water feeding chamber and a turbulence pipe are matched for use. The spiral nozzle comprises a nozzle body and an adjustable spiral type circular seam which is arranged in the periphery direction of the outer wall of the nozzle body. Cooling media are sprayed into the turbulence pipe in the adjustable spiral type circular seam direction through fixed tangent kinetic energy. Through the adjustable spiral type circular seam, the cooling media enter the turbulence pipe under large pressure in the adjustable spiral type circular seam direction through large tangent kinetic energy. By tangent flowing of the cooling media, heat exchanging speed of the cooling media and high-temperature rolled pieces is greatly improved, steel surfaces and core part grain growth can be effectively avoided, the strength is improved, and meanwhile other performance is obviously improved. Meanwhile, the spiral nozzle is small, energy consumption is lowered, cooling capacity is improved, a corrosion resistant coating layer is sprayed on the surface of the nozzle, and the corrosion resistance of the nozzle is improved.

Description

technical field [0001] The invention relates to the field of metal rolling, in particular to a spiral nozzle and a spiral water inlet method used in the process of controlled rolling and controlled cooling of bar materials. Background technique [0002] The core of the controlled rolling and controlled cooling process of steel is to improve the strength, toughness and welding performance of the steel by controlling the heating temperature, rolling process, cooling conditions and other process parameters during the rolling process, mainly by controlling the deformation during the rolling process. Parameters such as temperature, degree of deformation, and deformation speed refine the grains of the steel. While the strength is improved, other properties are also significantly improved, and the purpose of fully tapping the potential of steel materials is realized. The key to controlling the rolling temperature is the water-cooling equipment. The temperature of each stage of roll...

AI Technical Summary

Problems solved by technology

[0004] The technical problem to be solved by the present invention is to provide a spiral nozzle and a spiral water inlet method used in the controlled rolling and controlled cooling process, which is used to solve the unsatisfactory heat exchange effect between the cooling medium and the rolled piece in the existing controlled rolling and controlled cooling process And the problem that the nozzle is easily corroded and oxidized

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