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Fully hydraulic edger for plate mills

A technology of edge rolling and hydraulic cylinder, applied in the field of sheet metal rolling

Inactive Publication Date: 2012-02-29
PRIMETALS TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

This in turn requires a large hydraulic pumping system, servo valves, piping, etc.

Method used

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  • Fully hydraulic edger for plate mills
  • Fully hydraulic edger for plate mills
  • Fully hydraulic edger for plate mills

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Embodiment Construction

[0012] The device according to the invention uses at least two types of hydraulic cylinders: a first edge cylinder with a relatively large working area, which is used to achieve the relatively small movements of the rolls that occur during edging, and a cylinder with a relatively small At least one further cylinder of the working area for relatively large movements of the rollers associated with slab turning or maintenance.

[0013] In the following example, this other type of cylinder with a smaller working area is conveniently realized by modification of a "pull-back" cylinder commonly used in the prior art, but this should not be viewed as is the limit. Another cylinder than the pullback cylinder may be used.

[0014] refer to figure 1 , in a typical rolling and turning process in a plate rolling mill according to the prior art, the width of the slab 1 for the first two passes is the casting width and the edger rolls 2 must be set approximately to this width. After the 2...

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Abstract

A fully hydraulic edging system suitable for use in wide plate mills is disclosed. The need for electro-mechanical screws to effect large movements of the side rollers (2) is avoided by employing a pull-back hydraulic cylinder (10) for this purpose. The main hydraulic cylinders (12) are switched to a non-operational mode during large movements thus avoiding the need for large volumes of hydraulic fluid to be transferred under high pressure.

Description

technical field [0001] The invention relates to the field of metal plate rolling, in particular to the edge rolling operation in the process of plates passing through vertical rolls. Background technique [0002] In hot-strip mills, plate-steckel mills and some narrow-plate mills, hydraulic cylinders are often used to achieve the roll movements required for width adjustment. [0003] However, in plate mills, the reason for using both cylinders and machine screws for width adjustment is that very large movements of the rolls at high speeds are required. To provide such movement with cylinders that have been used in the past for edging operations requires the delivery of very large volumes of hydraulic fluid at high flow rates. This in turn requires a large hydraulic pumping system, servo valves, piping, etc. [0004] However, hydraulic cylinders offer a relatively cheap, simple, low maintenance option and a system that would allow the use of these options in a panel environ...

Claims

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Application Information

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IPC IPC(8): B21B13/06B21B31/32
CPCB21B1/224B21B13/06B21B31/32B21B31/18
Inventor M.T.克拉克J.弗拉尼M.琼斯A.马利森
Owner PRIMETALS TECH