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Device for removing foreign material from molten metal surface in steel sheet hot-dip galvanizing process

A technology of hot-dip galvanizing and molten metal, which is applied in hot-dip galvanizing process, grease/oily substance/floating matter removal device, metal material coating process, etc. It can solve the problems of reduced quality of galvanized steel plate and inability to discharge impurities, etc. , to achieve the effect of reducing the load and improving the quality of galvanizing

Pending Publication Date: 2021-12-07
株式会社斯戴普安津
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, there is a problem in that the galvanized quality of the steel sheet is lowered
[0010] As described above, the apparatus for removing impurities from the surface of molten metal according to the prior art has a structure that prevents impurities such as ash from adhering to the surface of a galvanized steel The surface of the molten metal in the nozzle part discharges impurities

Method used

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  • Device for removing foreign material from molten metal surface in steel sheet hot-dip galvanizing process
  • Device for removing foreign material from molten metal surface in steel sheet hot-dip galvanizing process
  • Device for removing foreign material from molten metal surface in steel sheet hot-dip galvanizing process

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Embodiment Construction

[0035] Figure 1 to Figure 5 An example of an apparatus for removing impurities from a molten metal surface in a steel sheet hot-dip galvanizing process according to the present invention is illustrated.

[0036] Referring to the accompanying drawings, an apparatus 10 for removing impurities from a molten metal surface in a steel sheet hot-dip galvanizing process according to the present invention is installed in a hot-dip galvanizing bath 150 to prevent the surface of a steel sheet 200 heat-treated at a high temperature from Oxidizes when the steel plate 200 is exposed to the atmosphere. In addition, the apparatus 10 has a structure for preventing surface defects from occurring due to ash, which is formed by condensing vapor of a hot-dip galvanizing solution and adheres to the surface of the steel sheet 200 as impurities.

[0037] The apparatus 10 for removing impurities from a molten metal surface in a steel sheet hot-dip galvanizing process has a nozzle portion 40 having a...

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PUM

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Abstract

A device for removing foreign material from a molten metal surface in a steel sheet hot-dip galvanizing process, of the present invention, comprises: a snorkel part of which the end portion is submerged under the molten metal surface of a hot-dip galvanizing bath so as to encompass a steel sheet inserted into the hot-dip galvanizing bath, in order to prevent the oxidization thereof; a snout including a dam unit having a dam forming part which encompasses the steel sheet from the end portion of the snorkel part so as to be spaced a predetermined gap from same, and which allows a molten galvanizing solution inside the hot-dip galvanizing bath to flow over toward the inner peripheral surface of the snorkel part so as to prevent the foreign material that falls onto the molten metal surface inside the snorkel part from attaching to the steel sheet; and a molten zinc discharge unit which is provided inside the snorkel part so as to pump, toward the molten metal surface inside the hot-dip galvanizing bath, the molten galvanizing solution having flowed over the dam forming part of the damp unit, thereby preventing the foreign material included in the molten galvanizing solution, having flowed over the dam forming part, from mixing into the molten galvanizing solution inside the hot-dip galvanizing bath and re-polluting the molten galvanizing solution or flowing into the snorkel part again.

Description

technical field [0001] The present invention relates to an apparatus for removing impurities from the surface of molten metal, and more particularly, to an apparatus for removing impurities from the surface of molten metal in a hot-dip galvanizing process for steel sheets, capable of preventing adhesion of impurities in vent pipe parts To the surface of the galvanized steel sheet, thereby improving the galvanized quality of the steel sheet. Background technique [0002] Hot-dip galvanized steel sheets have been widely used for general construction materials and outer panels for vehicles requiring strict quality control due to their excellent corrosion resistance. In particular, the outer panels for vehicles, which have been increasingly used in recent years, require strict surface quality control since corrosion resistance is regarded as an important surface property. [0003] Meanwhile, while continuously passing through a pay-off reel (not shown) and a welding machine (no...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C23C2/00C02F1/24C02F1/40C23C2/06C23C2/40
CPCC23C2/06C23C2/40C23C2/004C23C2/00361C23C2/0034C23C2/00342C23C2/0035C23C2/325C02F1/24C02F1/40
Inventor 文炳元
Owner 株式会社斯戴普安津
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