Anti-stripping water quantity distribution method for hot continuous rolling machine

Abstract

The invention relates to an anti-stripping water quantity distribution method for a hot continuous rolling machine. The anti-stripping water quantity distribution method comprises the following steps: 1) according to the minimum, average and maximum rolling widths a1, a2 and a3 of an existing product outline, the unit is mm; 2) determining the cooling width of the reinforced anti-stripping section: b1 = a1-f; f is the width of the strip steel edge cooling area; 3) determining the average width b2 of the cooling area of the anti-stripping section as a2-f, wherein the average width b2 contains a middle part b1; 4) determining the width b3 of the cooling area of the weakening anti-stripping section to be a3-f, wherein the cooling area comprises a middle part b2; 5) determining the cooling water quantity per unit width of the average anti-stripping section, wherein m2 is the cooling water quantity per unit width of the average anti-stripping section, and the unit is l / mm * min; g is the total water amount of the single collecting pipe, and the unit is 1 / min; 6) determining the cooling water quantity per unit width of the reinforced anti-stripping section: m1 = k * m < 2 >, k being a reinforcement coefficient; and 7) determining the cooling water quantity per unit width of the weakened anti-stripping section.

Description

technical field [0001] The invention relates to a method, in particular to a method for distributing anti-stripping water in a hot continuous rolling mill, and belongs to the technical field of hot continuous rolling production methods. Background technique [0002] In the production of hot-rolled strip steel, in order to prevent the peeling of the oxide film on the surface of the work rolls in the finishing rolling stage, anti-stripping water is generally added, mainly by cooling the surface of the strip steel, preventing the roll surface from being scalded, and reducing the heat transferred to the roll, thereby reducing The oxidation speed of the roll surface is reduced to reduce the thickness of the oxide film. For finishing work rolls, especially the front section work rolls, high-speed steel and high-chromium cast iron are generally used. During use, an oxide film must be formed to improve the wear resistance of the roll. The dense and stable oxide film can also ensure ...

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Problems solved by technology

[0005] The present invention aims at the technical problems existing in the prior art, and provides a method for distributing the amount of anti-stripping water in a hot continuous rolling mill. In the case of distribution, the temperature of the middle part of the roll is high, and the local oxide film thickness caused by the relatively insufficient anti-stripping ability causes the problem of peeling of the oxide film on the middle part of the roll; there are many factors that cause the peeling of the oxide film on the surface of the roll, and the thickness of the oxide film is one of them. Important factors, under certain conditions, exceeding a certain thickness, sometimes called critical thickness, the oxide film will start to peel off and continue to deteriorate

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