Method and device for controlling flow of zinc liquid in hot-dip galvanizing pot

一种流动控制、热镀锌的技术，应用在对表面涂布液体的装置、热浸镀工艺、涂层等方向，达到防止锌资源消耗、减少人工操作、避免堆积结块的效果
CN108998750BActive Publication Date: 2020-04-28BAOSHAN IRON & STEEL CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
BAOSHAN IRON & STEEL CO LTD
Publication Date
2020-04-28

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Abstract

The invention discloses a method and a device for controlling the flow of zinc liquid in a hot-dip galvanizing pot. The control method of the present invention is: the blowing effect of the air knife above the hot-dip galvanizing zinc pot (1) on the strip steel (3) promotes the zinc liquid (2) to the left side, the right side, the front end of the zinc pot, and the strip steel The area (I, II, III, and IV) formed between the furnace nose (4) diffuses and flows outwards, and drags the rapidly generated surface slag on the surface of the zinc liquid to flow outwards to the area; in the area On the edge side, multi-stage traveling wave magnetic field generators (71, 72, 73, 74, 75, 76, 77, 78) are set above the surface of the zinc liquid in the zinc pot to excite the traveling wave magnetic field to generate electromagnetic driving force for the liquid zinc to drive the liquid zinc to flow , the zinc liquid flow caused by the traveling wave magnetic field generator is connected with the spray flow of the air knife to promote the orderly flow of the zinc liquid on the surface layer of the zinc pot to the rear end of the zinc pot (the V zone); the surface floating on the surface of the zinc liquid The slag is dragged by the flowing zinc liquid to flow in a controlled direction.
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Description

technical field

[0001] The invention relates to the technical field of hot-dip galvanizing, in particular to a method and device for controlling the flow of zinc liquid in a hot-dip galvanizing pot. Background technique

[0002] As we all know, the hot-dip galvanizing process is completed by the strip steel passing through the zinc pot. Among them, the strip steel entering the zinc pot at high speed, the movement of the sinking roller assembly in the zinc pot, and the blowing action of the air knife will inevitably cause the flow of zinc liquid. At the same time, the zinc liquid and aluminum components in the zinc pot are particularly active at high temperatures (about 450°C, and the temperature of the aluminum plating pot is as high as 650°C), and have complex chemical reactions with the Fe elements brought in by the strip steel to form Zn -Fe-Al ternary metal compounds, etc., namely zinc slag, zinc slag can be divided into surface slag (also known as scum), suspended slag ...

Claims

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