Production method of thin steel plate

Abstract

The invention discloses a production method of a thin steel plate, and relates to the technical field of steel production, the rolling process is as follows: two pieces of steel are advanced, roller bed cooling water is closed, smoke suppression is closed, rolling mill side spraying is closed, a roller guard plate cleaning water hand valve is closed in five smelting, and steel rotating roller bed cooling water is opened for cooling for 1-2 min at an interval of 30 min; when a 6mm steel plate is produced, rough descaling is carried out for one pass, and a rolling mill is not descaled; descaling the steel plates with other thicknesses for the first pass by a rolling mill; the tapping temperature PDI is set to be 1250 DEG C; steel rotating codes are 3, 10 + 1 rolling passes and 2 forming passes, and the rolling speed is set to be 5.5-5.6 m / s; the PPO is adjusted to be in a shape with small arcs at the head and the tail, and the CVC limit value of the last three passes of finish rolling is manually set according to the on-site plate shape condition. The production efficiency is improved, the cost is reduced, the rolling abnormity is reduced, the wave-shaped buckling of the wide thin plate is reduced, and the one-time rolling yield is improved.

Description

technical field [0001] The invention relates to the technical field of iron and steel production, in particular to a method for producing thin-gauge steel plates. Background technique [0002] The 5-meter wide plate rolling mill is affected by the superposition of various factors such as rolling plan, roll bending force, roll profile, and roll shifting action during the rolling process of wide and thin plates, and the first pass rate of plate shape is often not very ideal. Contents of the invention [0003] The present invention aims at the above-mentioned technical problems, overcomes the shortcomings of the prior art, and provides a production method for thin-gauge steel plates, including scheduling→heating→rolling→ACC and straightening. The rolling process is specifically: [0004] ① Turn off the roller table cooling water, smoke suppression, and rolling mill side spray for two pieces of steel in advance, Wuye closes the roll guard cleaning sailor valve, and turns on th...

AI Technical Summary

Problems solved by technology

[0002] The 5-meter wide plate rolling mill is affected by the superposition of various factors such as rolling plan, roll bending force, roll profile, and roll shifting action during the rolling process of wide and thin plates, and the first pass rate of plate shape is often not very ideal