Accelerated stream cooling device cooling technique integration method

Abstract

A cooling process integration method for accelerating a laminar cooling device belongs to the technology field of steel plate laminar cooling. The process includes the following steps: establishing a function of the water ratio between upper and lower collectors, which varies with the flow rate and the thickness: F ratio is equal to f (thickness, Top-flow); redesigning the KTS2 value which ranges from 1 to 9 of the seventh bit in the self-adaption program segment of the ACC secondary automation model program; figuring out the distance from the head part of the steel plate to the center line of the rolling mill based on the roller table speed and the moving time of the steel plate on the roller table; and screening the unstable PDI date sent in the pony-roughing pass by the PDI data sent to the ACC steel plate only in the last pass through modifying the triggering condition of the pre-computation in the ACC automation control system; meanwhile, receiving only the PDI data of the steel plate in the last pass and pre-computation without comparing the two PDI data of the same steel plate by ACC; and moreover, reducing the starting conditions of the ACC automation cooling so as to solve the problem that the steel plate fails to cool due to inability to meet all the conditions.

Description

technical field [0001] The invention relates to the technical field of laminar flow cooling of steel plates, and in particular provides an integrated cooling process method for accelerated laminar cooling equipment (hereinafter referred to as ACC), especially model-based automatic laminar cooling equipment. Background technique [0002] The ACC laminar flow cooling equipment does not require manual operation, and all the on-site sensors conduct material tracking and temperature detection to cool the steel plate. Due to the fast rolling rhythm, the ACC material tracking system cannot accurately locate the steel plate. At the same time, the cooling of thick plates is due to the same plate If the temperature difference is too large, it will often lead to a large deviation in the final cooling temperature of the steel plate after water cooling and a fluctuating plate shape. Seriously affect the quality of the steel plate. [0003] At present, due to the temperature difference b...

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide an integrated method of ACC cooling process, which solves the problem of steel plate warping after water cooling due to the temperature difference between the same plate during the rolling process, especially for wide plates (>3300mm) or final cooling temperature When the cooling intensity is low and the cooling intensity is high, the plate shape of the steel plate is more prone to buckling

Images