Device and method for removing emulsion on surfaces of cold-rolled steel strips

Abstract

The invention discloses a device and a method for removing emulsion on surfaces of cold-rolled steel strips. The device comprises an upper working roller, an upper support roller seam purging mechanism, a steel strip upper surface emulsion sealing mechanism, an upper working roller surface emulsion removing mechanism, a steel strip lower surface emulsion removing mechanism, a steel strip upper surface purging mechanism and an upper support roller surface emulsion removing mechanism. The method is mainly characterized by reasonably controlling the sequence of opening and closing an emulsion injecting system and an emulsion removing device; a plurality of removing methods synergistically cooperate to form a whole body; the effect of removing the emulsion on the surfaces of the steel strips on the outlet side of a rolling mill is further improved; meanwhile, the residues of the emulsion in special parts of heads, tails, sides and the like of the steel strips can be removed; the surface quality of the finished steel strips can be improved.

Description

technical field [0001] The invention relates to the technical field of cold rolling, in particular to a device and method for removing emulsion on the surface of cold-rolled strip steel. Background technique [0002] During cold strip rolling, large amounts of emulsion are used due to the need to lubricate the rolling process and keep the rolls cool. After rolling, the emulsion remaining on the surface of the strip must be removed, otherwise, it will cause serious quality problems-emulsion stains, black spots on the strip, black strips on the strip, dirt on the surface of the strip, coils The machine slips, etc. The usual cleaning method is to use large-flow compressed air to purge the surface of the finished steel strip. During the purge process, when the compressed air purge pressure is low, the emulsion cannot be effectively removed, resulting in serious emulsion residues; When the purge pressure is too high, strong air reflection will occur, causing the emulsion to spl...

AI Technical Summary

Problems solved by technology

However, the residual emulsion on the lower surface of the strip is unevenly distributed in the width direction of the strip, especially on both sides of the strip, there is a large amount of emulsion brought out from the roll gap and a large amount of emulsion blown to the edge by compressed air. emulsion, and the suction capacity of the negative pressure suction method is relatively small, and it is impossible to absorb such a large amount of emulsion, resulting in more emulsion spots on the edge of the strip during the rolling process

[0005] In the prior art, an emulsion removal device is installed on the exit side of the rolling mill to remove the emulsion on the surface of the strip steel that has just been rolled. no effective removal method

Images