Molten material supply unit and dry coating device comprising same

Abstract

A molten material supply unit according to an embodiment of the present invention may comprise: a raw material supply portion to which a solid material is fed; a melting container portion connected tothe raw material supply portion so as to melt the solid material, thereby forming a molten material, and to discharge the molten material to the outside; and a barrier portion provided between a supply area of the melting container portion, which is connected to the raw material supply portion, and a discharge area of the melting containing portion, through which the molten material is dischargedto the outside, such that the molten material is solely moved to the discharge area. In addition, a dry coating device according to another embodiment of the present invention may comprise: the molten material supply unit; a vacuum chamber unit provided such that a to-be-plated member can move therein, the melting container portion of the molten material supply unit being provided inside the vacuum chamber unit; and a vapor spraying unit provided inside the vacuum chamber unit and connected to the melting container portion so as to heat the molten material, thereby forming a vapor material, and to spray the vapor material to the to-be-plated member, thereby coating the same.

Description

technical field [0001] The present invention relates to a molten material supply unit and a dry coating device including the supply unit. Background technique [0002] A coating substance such as metal vapor can be coated on the surface of a steel sheet by known various methods of depositing a continuously moving steel sheet in a vacuum atmosphere. Vacuum deposition based on the above-mentioned dry coating method is to vaporize and form a solid or liquid coating substance (metal or coating substance) by heating in a vacuum atmosphere by various methods and form it into a vapor, by which it is deposited on the steel sheet Form a thin film. [0003] More specifically, in the existing dry coating method, an electromagnetic coil for heating the coating substance is arranged in a vacuum chamber through which a member to be plated such as a steel plate continuously passes, and a high-frequency current is applied to the inside of the electromagnetic coil. The electromagnetic forc...

AI Technical Summary

Problems solved by technology

However, when using a raw material in the form of a wire rod, the processing cost for processing the shape of the raw material into a wire rod shape is increased, so there is a problem of cost increase. When using a liquid raw material, it is necessary to keep the exposed liquid raw material at a high temperature. There are limitations in the use of valves to control the supply of high-temperature liquid raw materials, so there is a problem that operating costs and equipment costs increase significantly

[0007] In particular, when a coating vapor is formed using a solid raw material and a coating operation is performed, there is a problem that it is difficult to continuously supply the solid raw material because the coating vapor flows countercurrently along the connecting pipe for supplying the solid raw material

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