Rolling control apparatus and a method for controlling rolling

Abstract

The invention provides a method which can effective control partial poor shaping of the section bars to be rolled. The rolling control apparatus controls a rolling machine which works in a manner that a working roller (1) performs rolling on the section bar by clamping the section bar. The rolling control apparatus also comprises a shaping control part. The shaping control part controls a plurality of cooling medium sprinklers which are disposed in a plurality zones which are formed by cutting the section bars along the length direction into many pieces. The shaping control part also obtains the real value of rolling by the working roller. The plurality of cooling medium sprinklers sprays cooling medium and the spraying shape of the cooling medium is an ellipse when the spraying mouth is looked at the front. The cooling medium sprinklers spay adjacent areas by inclining the long axis of the ellipse relative to the rotation direction of the working roller. The shaping control part can determine the spray quantity according to information of rolling and control incline of the long axis of the cooling mediums sprayed to adjacent areas.

Description

technical field [0001] The invention relates to a rolling control device and a rolling control method, in particular to temperature control of a roll for rolling a rolled material. Background technique [0002] In the rolling mill, the shape of the material to be rolled on the exit side of the rolling mill is controlled using mechanical means such as a work roll bender, an intermediate roll bender, and leveling. In such a mechanical means, it is only possible to control the shape of the shape of a linear to quaternary function. As a method of effectively controlling higher-order shape defects (hereinafter referred to as "local shape defects"), there is a method of using a cooling medium (coolant) sprayed on work rolls for rolling lubrication and cooling. For example, by dividing and adjusting the flow rate of the cooling medium in a direction perpendicular to the direction in which the rolled material is conveyed and in a direction parallel to the sheet surface (hereinafter...

AI Technical Summary

Problems solved by technology

Therefore, it is necessary to control the cooling condition in a narrow range in the plate width direction, but it is difficult to deal with it even if the method disclosed in Patent Document 2 is used.

It should be noted that such a problem occurs not only when the cooling medium is cooled, but also when the liquid sprayed at a temperature higher than that of the roll is heated.

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