A single-stand reversing rolling mill ultra-thin steel strip rolling process

Abstract

The invention relates to a technological method for rolling an ultrathin steel strip on a single-stand reversible rolling mill. The method is characterized in that hot rolled strip steel with the thickness of 2.75 to 3.0 mm is used as a raw material, and the 1150 rolling mill with the rolling force of 9000 KN is used for rolling the ultrathin steel strip with the thickness of 0.13-0.2 mm through six-pass rolling. According to the technological method for rolling the ultrathin steel strip on the single-stand reversible rolling mill, the state of an emulsion is adjusted, so that rolling passes are compressed, the rolling reduction rate is increased, the tension method is improved, high-speed rolling of the ultrathin steel strip is realized, working time is shortened, and productivity and efficiency of the rolling mill are greatly improved; and the ultrathin steel strip rolled by the method is good in plate shape, meets the requirements in thickness, is stable in quality, can meet the requirements for the thickness of the ultrathin plate of the industries, such as food packaging, chemical engineering, household electrical appliance panels, electronic information and color-coated galvanized plates and can be applied to production in a large scale.

Description

technical field [0001] The invention patent belongs to the technical field of cold rolling of steel strips, and specifically relates to a cold rolling process of ultra-thin steel strips. Background technique [0002] In recent years, the total output of my country's cold-rolled sheet has been increasing year by year, but its annual growth rate has shown a gradual slowdown. While the market demand is growing slowly, thin-gauge, high-strength sheets are increasingly favored by the majority of enterprises. The use of this thin-gauge raw material not only saves costs, but does not affect the performance, and can also make more and more beautiful packaging cans. This puts forward higher requirements for rolling equipment. At present, the rolling thickness of hot-rolled sheet can only be as low as 0.8~1.0mm. If you want to get thinner strip, you need to use cold rolling method. Using hot-rolled coils as raw materials, after a series of processes such as pickling, rolling mill, an...

AI Technical Summary

Problems solved by technology

However, the traditional rolling process does not reflect this advantage in the thin-gauge rolling production. The rolling thickness of the mature rolling process can only reach 0.25mm, and the ultra-thin steel strip less than 0.2mm is There are often problems such as large rolling force, poor plate shape, large thickness fluctuation, low production efficiency, and easy to break the strip.

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