Rolled lubricating process of rolling band-steel

Abstract

A roller-type lubricating method for rolling steel band features that the lubricating oil is transferred via oil tube onto the oil applying roller pressed on the working roller, and the oil applying roller is driven to rotate by said working roller to coat the surface of working roller to form an oil film layer.

Description

(1) Technical field [0001] The invention relates to a lubrication process for strip steel rolling. (2) Background technology [0002] At present, hot-rolled strip mills and cold-rolled strip mills both at home and abroad adopt the rolling lubricating oil process of oil-water mixed injection. This process mainly mixes and emulsifies water and rolling oil in a certain proportion through a mixer, and then passes Nozzle sprays onto the roll surface. Its purpose is mainly to provide a certain proportion of oil-water mixture for the roll surface of the working rolls of the rolling mill, so as to perform rolling lubrication on the working rolls, and finally form an attached oil film on the surface of the rolls to reduce the load on the rolls (reduce production energy consumption) and reduce the loss of the rolls , Reduce roll surface damage and strip surface defects, the attached oil film effectively prevents the contact between the roll and the strip surface, and at the same time...

AI Technical Summary

Problems solved by technology

[0005] 1. Large waste of lubricating oil: After the oil and water are mixed, in the process of spraying to the roll surface of the work roll, part of the atomization is easily burned by the high temperature of the strip steel, and only a small part of the oil-water mixture can be sprayed to the roll surface of the work roll , and poor lubrication

[0006] 2. Poor uniformity of lubricating oil: When rolling steel, the rolling lubricating oil-water mixing nozzle is connected to the nozzle plate by its own thread, which cannot ensure that the angles of all nozzles meet the set requirements, resulting in uneven spraying of the oil-water mixture on the surface of the work roll And inconsistent with the nozzle setting direction

[0007] 3. The stability of the oil film is poor: the rolling oil emulsion mixed and emulsified by water and oil in the rolling oil lubrication process is difficult to control the concentration and has poor stability when the oil and water are mixed, which has no effect on the final oil film stability and oil film thickness. ensure

[0008] 4. Affect the stability of rolling steel: long-term high temperature in the working area of ​​the roll and carbonization of the rolling oil in the nozzle will often cause the nozzle to be blocked, resulting in local lubrication of the rolling lubricating oil on the surface of the roll, which will affect the surface quality of the strip and cause strip The deviation even leads to strip steel scrap

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