Inhibition method of swirl in runner and runner without swirl
A technology that suppresses water and has no vortex. It is used in manufacturing tools, casting melt containers, metal processing equipment, etc. It can solve the problems that the strength of refractory materials is not easy to achieve, not enough to offset the vortex energy, and the steel cannot be used. Inclusions, reduced amount, small effect of tangential velocity
Inactive Publication Date: 2005-12-28
万恩同
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Problems solved by technology
The disadvantage of these methods is that the existence of the vortex is considered inevitable, and the tapping process is passively stopped when the molten steel slag volume reaches a certain proportion, but at this time a considerable part of the slag has entered the next container, and there are many Most of the steel remains in the original container and cannot be used and is treated as scrap steel
The disadvantage of this method is that there is a dilemma in determining the distance between the three holes. It cannot be too large. If it is too large, the mutual influence will be small, which is not enough to offset the vortex energy; if it is too small, the strength of the refractory material between the three holes will not be easily achieved. Therefore, this method is rarely used
The disadvantage of this method is that because most of the seat bricks are tapered or tapered, and the baffle is far away from the center of the vortex, the effect is limited. It is understood that there is no practical application at present.
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[0022] The specific implementation manners of the present invention will be further described in detail below in conjunction with the accompanying drawings. as attached image 3 As shown in , the non-vortex nozzle is a whole, which is divided into three parts for the convenience of description - the nozzle body 1, the inner baffle 2 and the upper baffle 3; the nozzle upper baffle 3 and the nozzle inner baffle 2 The placement positions can be overlapping or non-overlapping, for the convenience of illustration in image 3 The situation when they overlap each other is selected in . figure 1 , figure 2 Schematic representations of the positions of the inner baffle and the upper baffle in the nozzle cross-section are shown, respectively. The "quasi-triangle" of the upper baffle is actually a trapezoid with a relatively special shape (the difference between the upper and lower bottom lengths is relatively large, the bottom angle on one side is close to a right angle, and the oth...
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The invention discloses a method for suppressing the vortex of a nozzle and a no-vortex nozzle, and relates to an outflow port (ie, a tapping port) of molten steel in the metallurgical industry. In the utility model, an inner baffle is added in the channel-shaped cavity of the common nozzle body, and an upper baffle is added on the upper edge of the nozzle. The upper baffle can prevent the formation of the vortex in the upper part of the nozzle, and the inner baffle and the adjacent plate form a semi-closed vortex area, so that the vortices generated when the molten steel flows through the nozzle interfere with each other, and the energy cancels each other, so that the entire nozzle becomes no vortex Shuikou. The technical scheme of the invention has achieved remarkable technical effects. It suppresses the vortex of the tapping nozzle, makes the amount of molten steel slag less, provides conditions for refining, and improves the quality of molten steel. The nozzle of the present invention is suitable for the outlet where molten steel is transferred from one container to another by the action of gravity. It includes the tapping hole of the converter, the seat brick and the upper nozzle of the ladle, the seat brick nozzle of the tundish, etc.; it is also suitable for the container nozzle of the non-ferrous metal casting.
Description
technical field [0001] The invention relates to an outlet for liquid flow, in particular to an outlet for transferring molten steel from one container to another in the metallurgical industry (that is, a tap hole), especially a device that can suppress the vortex generated during the molten steel outflow process. Tapping port. Shuikou is a common name for the taphole in iron and steel enterprises. Background technique [0002] In modern steelworks, the problem of molten steel slag entrainment has always been a problem that is difficult to solve completely. At the end of tapping the molten steel from the converter to the ladle, due to the generation of the vortex, the steel slag will be involved in the molten steel, and in severe cases, it may also be involved in the air, resulting in a large amount of slag in the ladle, and the return of phosphorus and sulfur in the molten steel, reducing the alloy Yield. In addition, when the molten steel is from the ladle to the end of ...
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IPC IPC(8): B22D11/10B22D41/50
Inventor 万恩同
Owner 万恩同