A Laminar Backspray Optimization Method for Hot Rolling
An optimization method and nozzle technology, applied in the direction of metal rolling, metal rolling, manufacturing tools, etc., can solve problems such as analysis, lack of back-spray optimization method, no-system back-spray nozzle spray angle, etc., to achieve optimized rotation angle, optimized The effect of reverse jet spray angle and increasing horizontal speed
Active Publication Date: 2019-04-30
SD STEEL RIZHAO CO LTD
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Problems solved by technology
[0002] When the traditional side spray equipment is installed and configured, it generally only achieves the reverse spray effect in general, without a systematic and comprehensive analysis of the spray angle of the reverse spray nozzle, that is, there is a lack of a reasonable reverse spray optimization method
Method used
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Embodiment 1
[0072] According to a hot rolling laminar flow parameter, the height of the reverse jet header from the roll surface is about 1650mm, the nozzle length is about 310mm, the nozzle spacing is about 250mm, and the angle between the nozzle and the vertical is about 22°. The nozzle scattering angle is 30°, and the rotation angle is 15°. Taking the nozzle outlet velocity of 5m / s and the air resistance acceleration of 0.1g as an example, the relationship between the nozzle angle and the horizontal velocity of the reverse jet is calculated (such as figure 2 ), it can be seen that with the change of the nozzle angle, the horizontal velocity has a maximum value, and the nozzle angle at the maximum value is the optimal angle.
[0073] Under the condition of a scattering angle of 30°, the relationship between the coincidence degree and the nozzle rotation angle is calculated when the nozzle angles are 30°, 45°, and 60° (e.g. image 3 ), it can be found from the figure below that the larger ...
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The invention relates to a reverse spraying optimization method, in particular to a hot rolling laminar flow reverse spraying optimization method. The hot rolling laminar flow reverse spraying optimization method comprises the following steps: hot rolling laminar flow reverse spraying basic parameters are given; a hot rolling laminar flow reverse spraying speed model is built; a hot rolling laminar flow reverse spraying covering model is built; and the hot rolling laminar flow reverse spraying speed model and the reverse spraying covering model are used for determining reverse spraying optimalspraying angle and rotating angle. In the hot rolling laminar flow reverse spraying optimization method, the measure of improving the reverse spraying purging strength is to accelerate the horizontalspeed of water currents and to enable the water currents to totally cover the whole roller surface width; and through building of the reverse spraying speed model and the covering model, the method for optimizing the reverse spraying angle and the rotating angle is realized, so that the reverse spraying parameters can be optimally designed, or existing reverse spraying parameters can be improved.
Description
Technical field [0001] The invention relates to a method for optimizing back spray, in particular to a method for optimizing hot rolling laminar flow back spray. Background technique [0002] When traditional side spray equipment is installed and configured, it generally only achieves the reverse spray effect, and there is no systematic comprehensive analysis of the spray angle of the reverse spray nozzle, which means that it lacks a reasonable method to optimize the reverse spray. Summary of the invention [0003] The purpose of the present invention is to provide a hot rolling laminar flow back spray optimization method, the measure to improve the back spray blowing force is to increase the horizontal speed of the water flow, and at the same time make the water flow completely cover the entire roll surface width. The velocity model and the coverage model realize a method of optimizing the injection angle and rotation angle of the injection, which can optimize the injection param...
Claims
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IPC IPC(8): B21B45/02
CPCB21B45/0233B21B2201/06
Inventor 单修迎李相前王京先杨贵玲曹金生张卫卫王南辉贾崇雪刘飞
Owner SD STEEL RIZHAO CO LTD