Appts. and method for holding molten metal in continuous hot dip coating of metal strip
A technology for melting metal and holding devices, applied in hot-dip plating process, metal material coating process, coating, etc., which can solve the problems of maintaining the original shape, high cost, and difficulty in maintaining the chemical composition of molten metal
Inactive Publication Date: 2003-12-24
POHANG IRON & STEEL CO LTD +1
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- Application Information
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Problems solved by technology
[0012] Finally, in the method of using both AC electromagnet and gas pressure chamber to float the molten metal, the use of both structures makes the cost greater and the gas can penetrate into the molten metal forming bubbles therein
In addition, it is difficult not only to maintain the original shape of the conductor immersed in the molten metal, but also to maintain the chemical composition of the molten metal itself
Method used
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[0042] Now, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings.
[0043] figure 1 is a schematic longitudinal sectional view of the molten metal holding device of the first preferred embodiment of the present invention.
[0044] Such as figure 1 As shown, the molten metal holding device 20 is used to continuously hot-dip coat metal strips, and includes the following main elements: a container 21, which contains molten metal 22, and forms a slot-shaped opening on the bottom surface; and alternating current (AC) Electromagnet 30, which is mounted adjacent to the outside surface of container 21. The AC electromagnet 30 provides buoyancy into the molten metal 22 so it cannot come out through the opening of the vessel 21 .
[0045] The container 21 is substantially rectangular in cross-section, so it has long and short sides. The metal strip 33 is fed through slot-shaped openings formed on the bottom surface ...
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A molten metal holding apparatus for the continuous hot dip coating of a metal strip includes a vessel that is substantially rectangular in cross section having long sides and short sides and has formed a slot-shaped opening in a bottom surface, the vessel containing molten metal; subsidiary vessels formed following an outer circumference of an upper end of the vessal and for temporarily storing molten metal that overflows from the upper end of the vessel; chambers formed outwardly following long sides of a lower end of the vessel and that communicate with the vessel via slit-shaped branch openings formed at a predetermined slant toward the vessel: a plurality of subsidiary tubes comunicating with the subsidiary vessels; and alternating current electromagnets including a core mounted adjacent to outside side surfaces of the vessel and between the subsidiary vessels and the chambers and a coil wound around the core and to which an alternating current is supplied.
Description
technical field [0001] The present invention relates to an apparatus for holding molten metal during continuous hot dip coating of metal strip. More particularly, the present invention relates to a molten metal holding apparatus for continuous hot dip coating of metal strip in which the strip passes through a vessel filled with molten spray metal and during the spraying process, a Electromagnetic field, so that the molten metal floats stably. Background technique [0002] In continuous hot dip coating of metal strip, the metal strip is continuously passed through a container filled with molten metal, which is used as the spraying solution. Such as Figure 15 As shown, in a conventional continuous hot dip coating method, a container 83 is filled with a molten metal 81 obtained by melting a metal by using aluminum, zinc or an alloy of these metals as a metal solution, and using sinker rolls ( A sink roll) and a stabilizing roll 86 continuously feed the metal strip 89 into th...
Claims
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IPC IPC(8): C23C2/00C23C2/24C23C2/40
CPCC23C2/24
Inventor 金浩泳金钟根金句和郑凞泰尹珉洙阿纳斯塔西娅·科尔斯尼切科
Owner POHANG IRON & STEEL CO LTD