Water spray injection method of leveling liquid in cold milling wet leveling production

Abstract

The invention relates to a method for carrying out leveling production by adopting the water spray injection for replacing the ordinary leveling liquid spraying, which is applied to various cold milling leveling machine sets. A water spray injection method of leveling liquid in cold milling wet leveling production is characterized by comprising the following steps that: 1, a water spray injector is arranged at an inlet side of a wet leveling machine, a spray opening of the spray nozzle of the water spray injector faces a roller seam formed between a work roller and a support roller, and an air input end and a leveling liquid input end are arranged on the spray nozzle; 2, when the leveling milling of the wet leveling machine is started, the compressed air and the leveling liquid are input to the spray nozzle, a mixing valve is opened and regulated so that the flow rate of the leveling liquid flowing into each spray nozzle is 10 to 44.7 L / h, the flow rate of the air flowing into each spray nozzle is 5.2 to 13 m<3> / h, the leveling liquid and the compressed air are mixed at the spray nozzle part and are sprayed out at the spray opening of the spray nozzle in a gas spray mode, when the leveling milling is completed, the conveyance of the compressed air and the leveling liquid is stopped, and the mixing valve is closed. The problem of leveling spot residue caused by unclean blowing of the leveling liquid is solved by the method.

Description

technical field [0001] The invention belongs to the technical field of cold-rolling and leveling, and in particular relates to a method for leveling production by using water mist spraying instead of ordinary leveling liquid spraying, which is applied to various cold-rolling leveling units. Background technique [0002] Traditional leveling production includes dry leveling and wet leveling. The dry skinning process will generate a lot of dust during the skinning process, which will cause surface pollution of the finished strip steel. For wet leveling, a wet leveling spray beam is arranged on the entrance side, and 8 to 12 nozzles are arranged on the spray beam, and each nozzle sprays about 108 to 168 L / h of leveling liquid, and sprays a large amount of leveling liquid onto the work roll and the strip , Flush the dust generated during the leveling process. However, after a large amount of leveling liquid is sprayed onto the strip surface, problems such as residual leveling ...

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to provide a water mist spraying method of the leveling liquid in the cold rolling wet leveling production, change the traditional direct injection of the leveling liquid, and change the direct injection of the leveling liquid into spraying of the leveling mist, so as to solve the problem of cleaning the leveling liquid due to the impurity of the leveling liquid. To leave the problem of smooth spots

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