Method for blocking backflow of emulsified liquid with low inertia force

Abstract

The invention belongs to the technical field of cold-rolled emulsified spot processing, and in particular relates to a method for blocking backflow of emulsified liquid with low inertia force, which is applied to various cold mill trains. The method for blocking the backflow of the emulsified liquid with low inertia force is characterized by comprising the following steps of:1) arranging a rubber scraper on the inlet side of a cold mill, and arranging a rubber scraper on the outlet side of the cold mill, wherein the rubber scraper on the inlet side and the rubber scraper on the outlet side are all positioned above a steel strip passing line; and 2) after the mill completes switching rolling passes, putting down the rubber scraper on the inlet side to press against the upper surface of a steel strip so as to block the backflow of the emulsified liquid when the rolling speed of the cold mill is less than 4m / s, lifting the rubber scraper to leave the upper surface of the steel strip when the rolling speed of the cold mill is more than or equal to 4m / s, and in the process, always lifting the rubber scraper on the outlet side. The method has the characteristic of simpleness, and can prevent the backflow of the emulsified liquid during low-speed rolling of the mill.

Description

technical field [0001] The invention belongs to the technical field of emulsification spot treatment in cold rolling, and in particular relates to a method for blocking the backflow of emulsion with low inertia force when switching rolling passes of a single-stand reversible cold rolling mill, which is applied to various cold rolling mill units. Background technique [0002] When the single-stand reversing cold rolling mill switches between rolling passes, when the rolling speed is lower than 4m / s (the emulsion returns with low inertial force), a large amount of emulsion used for rolling lubrication returns to the inlet side, causing the finished product There are a lot of emulsion residues in the head and tail of the steel coil, which not only reduces the yield of cold-rolled products, but also increases the consumption of rolling oil. Traditionally, squeezing rollers are added at the entrance and exit of the rolling mill, such as figure 1 As shown, use a squeeze roller to...

AI Technical Summary

Problems solved by technology

exist figure 1 In the process, the entrance squeeze roller 3 at the entrance will throw the returned emulsion in the frame to the entrance during the squeeze process, which will affect the normal operation of the thickness gauge. Increased consumption of emulsion

On the outlet side, the tension distribution between the outlet coiler and the frame is changed due to the input of the outlet squeeze roller 5, which makes it difficult to control the shape of the strip

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