Air-water mist cooling system for continuous annealing of strip and control method

Abstract

The invention relates to an air-water mist cooling system for continuous annealing of a strip and a control method. The air-water mist cooling system is characterized by comprising an air-water mist cooling device, an air blowing device, a water supply device and an air discharge device; the air-water mist cooling device comprises a box and multiple sets of air-water mist sprayers, and each set ofair-water mist sprayers comprises two air-water mist sprayers which are arranged up and down in the box to form an opposite up-down spray structure; the top of the box is provided with an air outlet,and the air discharge device is arranged at the air outlet to form a forced air discharge structure so as to discharge hot air and water vapor in the box from the air outlet; the air outlet end of the air blowing device is connected with air inlets of the multiple sets of air-water mist sprayers to form an adjustable air inlet structure; and the water outlet end of the water supply device is connected with water inlets of the multiple sets of air-water mist sprayers to form an adjustable water inlet structure. The air-water mist cooling system has the outstanding substantive features of realizing uniform cooling for continuous annealing of the strip, having a good stress relief effect, keeping the shape of the strip (workpiece) unchanged and the like, and also has significant technological progress.

Description

technical field [0001] The invention relates to an air-water mist cooling system and a control method for continuous annealing of strips, which are suitable for continuous annealing and cooling of metal strips, and relate to the control technology of strip cooling uniformity and good shape. It belongs to the field of metallurgy technology. Background technique [0002] With the development of metal strip rolling mill technology, the strip is becoming wider and thinner, which makes the flatness and convexity of the strip more demanding. The shape of the strip depends on the distribution of the residual stress of the strip. In order to eliminate the residual internal stress of the strip, there are higher requirements for the control of the heating uniformity and cooling uniformity of the annealing after rolling. When the heating and heat preservation is complete, the control of cooling speed and cooling uniformity is one of the key factors to eliminate the internal stress of ...

AI Technical Summary

Problems solved by technology

[0004] One of the purposes of the present invention is to provide an air-water mist cooling system for continuous annealing of strips in order to solve the problems of uneven cooling, poor stress relief effect, and easy deformation of existing gas-cooled or water-cooled strips

[0005] The second object of the present invention is to provide an air-water mist cooling control system for continuous annealing of the strip in order to solve the problems of uneven cooling, poor stress relief effect, and easy deformation of the existing gas-cooled or water-cooled strip. method

Images