Abstract: An embodiment of the present invention relates to a vertical electrolytic device having an improved structure to easily discharge bubbles generated during an electrolysis process that is used for surface modification of a separator of a fuel cell or the like. The vertical electrolytic device according to an aspect of the present invention includes an electrolytic bath in which an electrolyte is stored and an opening is formed in top and bottom portions thereof to allow vertical movement of a strip, wherein the bottom opening is formed to correspond with the strip to prevent discharge of the electrolyte stored in the electrolytic bath; and at least one pair of electrode parts disposed in the electrolytic bath so as to be facing each other on each side of the strip.

Abstract: A gas wiping apparatus is a type of equipment for coating a molten metal onto a steel strip, in which the molten metal solution deposited on the steel strip is wiped to adjust a coating thickness. The gas wiping apparatus includes a body containing a high pressure gas and a multiple nozzle unit disposed at the body to eject the high pressure gas onto a surface of a moving coated steel strip. The surface of the coated steel strip passing through a hot dipping bath filled with the molten metal is wiped by a high speed gas jet. Here, the molten metal is prevented from splashing even at a high-speed and the steel strip can be adjusted in the coating thickness stably and uniformly.

Abstract: A gas wiping apparatus is a type of equipment for coating a molten metal onto a steel strip, in which the molten metal solution deposited on the steel strip is wiped to adjust a coating thickness. The gas wiping apparatus includes a body containing a high pressure gas and a multiple nozzle unit disposed at the body to eject the high pressure gas onto a surface of a moving coated steel strip. The surface of the coated steel strip passing through a hot dipping bath filled with the molten metal is wiped by a high speed gas jet. Here, the molten metal is prevented from splashing even at a high-speed and the steel strip can be adjusted in the coating thickness stably and uniformly.