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

An anti-stripping water and water distribution technology, applied in metal rolling, metal rolling, computer-aided design, etc., can solve the problems of insufficient anti-stripping ability, high temperature, and peeling of oxide film, so as to improve the anti-stripping ability and oxidation resistance. The effect of reducing the problem of film peeling and reducing the waste of water

Active Publication Date: 2019-09-24
SHANGHAI MEISHAN IRON & STEEL CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

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 pr

Method used

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

Examples

Experimental program
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Effect test

Example Embodiment

[0030] Example 1: 1780 production line F1-4 anti-stripping water distribution

[0031] Take 1780 rolling line F1-4 unit as an example, the total amount of anti-stripping water is 250l / min, and the upper and lower headers are each 125l / min. The water distribution method is as follows:

[0032] 1) According to the current product outline, the minimum, average and maximum rolling widths are 900mm, 1300mm and 1630mm respectively;

[0033] 2) Determine the cooling width of the reinforced anti-stripping section b1=a1-f, f is the width of the cooling zone at the edge of the strip, and f is 200mm; at this time, b1=a1-f=900-200=700(mm);

[0034] 3) Determine the average cooling width of the anti-stripping section b2=a2-f=1300-200=1100(mm) (including b1);

[0035] 4) Determine the width of the cooling area of ​​the weakened anti-stripping section b3 = a3-f = 1630-200 = 1430 (mm) (including b2);

[0036] 5) Determine the average amount of cooling water in the anti-stripping section:

[0037] 6) De...

Example Embodiment

[0045] Example 2: F0-3 anti-stripping water distribution on the 1422 production line;

[0046] Take the F1 unit of 1422 rolling line as an example, the total cooling water volume of F0-3 roll is 200l / min, and the upper and lower headers are each 100l / min. The water distribution method is as follows:

[0047] 1. According to the current product outline, the minimum, average and maximum rolling widths are 700mm, 1050mm and 1270mm respectively;

[0048] 2. Determine the cooling width of the reinforced anti-stripping section b1=a1-f, f is the width of the cooling zone at the edge of the strip, and f is 200mm; at this time, b1=a1-f=700-200=500(mm);

[0049] 3. Determine the average cooling width of the anti-stripping section b2=a2-f=1050-200=850 (mm) (including b1);

[0050] 4. Determine the width of the cooling zone of the weakened anti-stripping section b3 = a3-f = 1270-200 = 1070 (mm) (including b2);

[0051] 5. Average amount of cooling water in anti-stripping section:

[0052] 6. Determ...

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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 ...

Claims

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Application Information

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IPC IPC(8): G06F17/50B21B28/02
CPCB21B28/02G06F30/20
Inventor 李欣波王军
Owner SHANGHAI MEISHAN IRON & STEEL CO LTD
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