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Device and method for hot dip coating a metal strip

A technology of hot-dip coating and metal strip, applied in the direction of metal material coating process, coating, hot-dip plating process, etc., can solve the problem of high maintenance cost of the gate

Inactive Publication Date: 2013-03-27
SMS DEMAG AG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This tank has to be emptied from time to time, for which it first has to be dismantled and then reinstalled, so that the operation of the lock causes high maintenance costs

Method used

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  • Device and method for hot dip coating a metal strip
  • Device and method for hot dip coating a metal strip
  • Device and method for hot dip coating a metal strip

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0024] figure 1 A hot dip coating apparatus 100 for coating metal strip (not shown) is shown. The device comprises two vertical columns 102 arranged on either side of a vessel 110 filled with molten metal 200 . The beam 103 moves vertically along the column 102 by means of a vertical drive device 104 . Two support arms 105 are suspended from the transverse beam 103 , between which the roller 120 is rotatably mounted. After the metal strip has dipped into the molten metal, it deflects around the roller 120 , more precisely around its roller body 122 , before it exits the molten metal upwards again. By means of the vertically displaceable crossbeam 103, the rollers together with their support structure on the support arm 105 can be lowered into the molten metal 200 or removed from the metal for maintenance purposes or downtime. Pull up from the melt.

[0025] figure 2 since from figure 1 shows a first embodiment of the hot-dip coating device according to the invention in ...

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PUM

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Abstract

The invention relates to a hot dip coating device (100) for coating a metal strip with molten metal (200) and to a method for operating said device. The metal strip is deviated in the molten metal (200) by means of a roller (120). Said roller is rotatably received in a bearing (144) in a supporting arm (105). The bearing is mounted in a bearing compartment (142). In order to seal the bearing compartment (142) from the undesired entry of molten metal (200), a sluice is arranged between the bearing compartment (142) and a roller passage (136) to the molten metal (200) and is impinged upon by a gaseous medium at gas pressure to seal the sluice chamber (132) from the molten metal (200). The aim of the invention is to reduce the maintenance work required for said sluice. To achieve this, the sluice chamber (132) is configured in the shape of a diving bell having a channel-type exit (134) which is open to the surrounding molten metal (200).

Description

technical field [0001] The invention relates to a device and a method for hot dip coating metal strips. Background technique [0002] A device of this type is basically known, for example, from DE 10 2004 030 207 A1. The hot-dip coating device disclosed in this patent document comprises a container for molten metal through which a metal strip is guided. When passing through the melt, the metal strip is deflected and stabilized in the melt by means of rollers with roller bodies and roller journals. The rollers or the roller journals are rolling-mounted. In order to guarantee the functional capabilities of rolling bearings, they must be protected from aggressive molten metals. For this purpose, the shaft channel to the molten metal must be closed by an effective seal in order to prevent penetration of the molten metal into the rolling bearing. In the publication mentioned, the sealing is carried out by means of a lock which surrounds the roller journal with a lock chamber ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C23C2/00
Inventor P·德科克
Owner SMS DEMAG AG