Device for removing residual emulsion at edge of strip steel of cold tandem mill

Abstract

A device for removing residual emulsion at the edge of strip steel in a tandem cold rolling mill. A hydraulic motor is fixed on the anti-winding guide plate at the exit of the last stand rolling mill. The hydraulic motor drives the worm gear to rotate, and the two sides of the worm gear are respectively connected with screw rods. The screw rods are respectively arranged on both sides of the worm gear, horizontally above the width direction of the strip steel of the cold tandem rolling mill; nuts are matched on the screw rods, so that when the screw rods rotate, the nuts move along the axial direction of the screw rods; the nuts are fixed with Vertical liquid blocking baffle and purge nozzle. It drives a pair of screw nuts to move through a hydraulic motor, so that the blowing position can be translated along the width direction of the strip, and the precise control of the adjustment position can be realized through an encoder and a process computer. The response speed of the device is fast, and the precise positioning of the purging can be completed quickly. It has the advantages of compact structure, strong environmental adaptability, strong power, stable operation, convenient maintenance and low maintenance cost. It eliminates the residual liquid on the edge of the strip surface, and the product The quality has been greatly improved.

Description

technical field [0001] The invention relates to strip surface quality control equipment of a cold tandem rolling mill, in particular to a device for removing residual emulsion at the edge of the strip steel surface at the exit of a cold tandem rolling mill. Background technique [0002] In the rolling process of cold-rolled strip steel, the emulsion plays a very important role in the rolling process as a rolling lubrication and cooling medium. At the same time, whether the emulsion can be fully purged from the strip surface during the rolling process has a great influence on the quality of the strip surface after rolling. However, at present, due to the increase of the speed of the cold rolling mill, the flow rate of the emulsion increases, which makes it difficult to remove the emulsion on the surface of the strip. Once the residual amount of emulsion is too large, after annealing treatment, burnt paste-like corrugated traces will be produced, which will seriously affect t...

AI Technical Summary

Problems solved by technology

However, for a long time, the effect of compressed air purging device on the residual emulsion on the edge of the strip is very unsatisfactory.

First, because the product specifications of the cold-rolled continuous production line are frequently switched online, the fixed blowing device generally used cannot effectively clean the edge of the strip with different width specifications, even if some production lines are equipped with blowing for the edge of the strip device, but there are defects such as low degree of automation, low adjustment accuracy, inconvenient operation and maintenance, high failure rate, and high environmental requirements, which affect the effect of purging

Second, due to the existence of empty roll gaps on both sides of the edge of the strip, a large amount of emulsion is thrown out with the rotating work rolls, and the compressed air blowing device installed in the frame cannot instantly blow off the residue on the edge of the strip surface. liquid

The third is that the residual emulsion that is thrown out cannot be blown off in time, and the amount and width of the residual liquid randomly formed on the edge of the strip are uncertain, making it difficult to adjust the blowing

Images