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Mixed oil cooling and water cooling rolling

A hybrid cooling, oil spray technology, applied in metal rolling, metal rolling, rolls, etc., can solve the problems of water-cooled rolling mills that are expensive, difficult to design, install, maintain and operate, unsuitable for sale or further manufacturing, etc.

Active Publication Date: 2021-08-10
NOVELIS INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, water-cooled mills are expensive and difficult to design, install, maintain and operate, and water droplet-related surface defects can appear on strip rolled in water-cooled mills
Strips with water droplet related surface defects may be unsuitable for sale or further manufacture

Method used

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  • Mixed oil cooling and water cooling rolling
  • Mixed oil cooling and water cooling rolling
  • Mixed oil cooling and water cooling rolling

Examples

Experimental program
Comparison scheme
Effect test

example 1

[0050] Example 1 is a hybrid cooling system for a rolling mill comprising: a top oil spray head near top work rolls; a bottom oil spray head near bottom work rolls; and water sprinkler head.

example 2

[0051]Example 2 is the system of Example 1, further comprising: an oil supply system fluidly connected to said top oil spray head and said bottom oil spray head; and a valve coaxially positioned at said bottom oil spray head Between a shower head and the oil supply system, wherein the valve is actuatable to divert oil from the bottom oil shower head to the top oil shower head.

example 3

[0052] Example 3 is the system of example 1 or 2, wherein the water shower head is located near the discharge side of the bottom work roll.

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PUM

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Abstract

The present invention provides a rolling mill (100) having oil-cooled top and bottom work rolls (102, 104) at the feed side (124) and on the discharge side (126) of the bottom work rolls (104) There is a water shower head (130). The use of water cooling below the rolling line (128) considerably reduces the heat in the rolling mill (100) without the risk of water drop related surface defects during rolling. Water cooling can be used on the bottom work roll (104) and a portion of the oil that no longer needs to cool the bottom work roll (104) can be diverted to the top work roll (102). In some cases, the coolant portion of the flatness control may be operated solely via water cooling of the bottom roll (104).

Description

[0001] Cross References to Related Applications [0002] This application claims the benefit of U.S. Provisional Application No. 61 / 990,890, filed May 9, 2014, entitled "WATER-COOLED ROLLING," which is incorporated by reference in its entirety incorporated into this article. technical field [0003] The present invention relates generally to metal rolling, and more particularly to rolling using a combination of oil and water cooling. Background technique [0004] Rolling is a metal forming process in which a slab or strip is passed through a pair of work rolls to reduce the thickness of the slab or strip. During the rolling process, the work rolls are usually cooled with oil and can be very hot. High heat in the work rolls can lead to undesirable strip flatness, low yields and broken strips with subsequent risk of fire. Alternatively, the work rolls can be cooled with water, which has a higher heat removal capacity than oil and is non-flammable. However, water-cooled ro...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B21B27/10B21B38/02
CPCB21B27/10B21B2027/103B21B38/02Y10T29/49718B21B45/0233B21B2203/18B21B37/32
Inventor D.盖恩斯鲍尔J.麦克奈尔
Owner NOVELIS INC