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A process and roll stand for cold rolling of a metal strip

A metal strip and rolling mill technology, applied in metal rolling, metal rolling, metal processing equipment, etc., can solve the problems of high reprocessing cost and waste products, and achieve the effect of eliminating condensation or crystallization, high surface quality and good effect

Inactive Publication Date: 2007-03-14
AIR PROD & CHEM INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

High reprocessing costs and scrap due to cleaning operations and rejects caused by aqueous or oily residues remaining on the metal strip surface

Method used

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  • A process and roll stand for cold rolling of a metal strip
  • A process and roll stand for cold rolling of a metal strip
  • A process and roll stand for cold rolling of a metal strip

Examples

Experimental program
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Embodiment Construction

[0034] In the drawings, the same symbols indicate the same or equivalent devices or components.

[0035] FIG. 1 shows a perspective view of a nozzle arrangement 1 according to a first embodiment of the invention. The nozzle arrangement 1 comprises five nozzles 3 with a circular spout 4 in the center of the nozzles. At the front of each nozzle, a conical extension can be provided, so that the cold air flow and / or liquefied air flow ejected from the nozzle is introduced into the cold and / or liquefied conical air flow, as shown schematically in Figure 6 shown (symbol 14). The nozzle 3 communicates via a supply line 9 with an insulated main supply line 7 . The nozzle 3 and the supply line 9 are housed in the tank 2 . A heat insulating material may be provided inside the tank 2 such as plastic foam such as PU foam or resin. The tank 2 comprises a front cover 6 with a circular opening aligned with a spout 4 or nozzle 3, respectively, so that the cold and / or liquefied air flow ca...

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PUM

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Abstract

A process is set forth for cold rolling of a metal strip, comprising: making the metal strip (18) pass through a roll gap (17) between two counter-rotating rolls (16); blowing cold and / or liquefied gas into the area of roll gap (17) by at least one nozzle (4) of a nozzle device (1); mounting a case (2) including a front top (6) partly surrounding at least one nozzle (4), wherein the front top (6) covers the nozzle device at least round the nozzle (4) of the nozzle device to prevent being effected by surrounding atmosphere so that water or ice generated round the nozzle (4) can be prevented; the front top (6) is provided with at least one opening (3), each of which aligns with the nozzle (4); heating at least one of the case (2) and the front top (6) to prevent water or ice aggradation. The invention further provides a corresponding cold roller for a metal strip.

Description

[0001] This application is a divisional application of an invention patent application with an application date of April 1, 2002, an application number of 02813383.8, and an invention title of "metal strip cold rolling method and rolling mill". technical field [0002] The present application relates to a metal strip rolling plant and method, in particular to a metal strip cold rolling method and rolling mill. Background technique [0003] Metal strip manufacturers are using cold rolling methods to produce metal strip with specific mechanical properties, surface properties and thickness. In the cold rolling process, the metal strip passes through a nip existing between two counter-rotating rolls in order to reduce the strip thickness and provide the required surface quality. In cold rolling operations a lot of heat is generated in the roll gap due to the friction between the rolls and the metal strip and due to deformation of the strip. This heat adversely affects the mater...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B21B45/02B21B1/22
CPCB21B2045/0212B21B45/0209B21B27/06
Inventor G·普里奇特H·施尔拉克Z·朱雷基J·H·弗雷
Owner AIR PROD & CHEM INC
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