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Ceramic refractory stopper

A refractory plug and ceramic technology, applied in the field of ceramic refractory plugs, can solve the problems of slow transportation and low speed

Active Publication Date: 2014-05-07
REFRACTORY INTELLECTUAL PRORERTY GMBH & CO KG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Around this withdrawal region, the corresponding metal melt has a relatively low velocity, which has the disadvantage that the argon gas feed is slow downwards and takes place around the withdrawal opening of the gas channel at the outer surface of the plug head So-called clogging (deposition of solidified material)

Method used

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  • Ceramic refractory stopper
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Examples

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Embodiment Construction

[0044] according to figure 1The plug design corresponds to the design of EP 1 I 88502B 1 (Fig. 6a). The plug has a plug body 12 with a plug head 14 at its lower end and a fixing means F (for a corresponding lifting device) at its upper end. Gas is conveyed along the central gas feed line 16 on direction arrow T towards the plug head 14 into a reduced diameter gas channel 18 and exits the plug at the lowest point P of this gas channel 18, and the plug is shown in Fig. shows the in-use position and is axially aligned with the central longitudinal axis (A-A) of the plug.

[0045] At this point, the corresponding metal melt M has a relatively low velocity. This is why relatively large gas bubbles can form around the outlet opening of the gas channel 18 and become clogged.

[0046] figure 2 The lower portion of the new plug design is shown. According to the prior art, the plug body 12 is provided with a central gas feed line 16 and a plug head 14 . The central longitudinal a...

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Abstract

The invention relates to a ceramic refractory stopper (a stopper device) for controlling a flow of molten metal at an outlet opening of a metallurgical vessel, such as a tundish.

Description

technical field [0001] The present invention relates to ceramic refractory stoppers (stopper devices) for controlling the flow of molten metal at the outlet opening of a metallurgical vessel such as a tundish. Background technique [0002] A general type of ceramic refractory plug consists of a rod-shaped plug body, one end of which is designed to be fixed to a corresponding lifting mechanism, while the other end of which is provided with a so-called plug head. The rod-shaped plug body defines a central longitudinal axis. [0003] It is well known in cast steel to arrange such stopper rods, which are in many cases one-piece stopper rods, in a vertical position in order to change the cut-off of the associated outlet opening of the corresponding metallurgical vessel by said lifting action. area. With respect to any directions disclosed hereinafter, such as "top", "bottom", "upper and lower" always refer to the figure 1 Vertical use position shown. [0004] This type of sto...

Claims

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Application Information

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IPC IPC(8): B22D41/18
CPCB22D41/186
Inventor G.尼茨尔A.施特拉尼迈尔H-J.哈斯林格H.考夫曼
Owner REFRACTORY INTELLECTUAL PRORERTY GMBH & CO KG