Coating method using enamel and equipment for carrying out the method
AssigneeBhi Co., Ltd.
InventorJong Inn WOO
Life of this patent
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Abstract
Provided are an enamel coating method and apparatus. The enamel coating method includes (a) preprocessing a surface of the metal tube by feeding the metal tube into a preprocessing chamber by an in-feed conveyor; (b) coating the surface of the metal tube with an enamel glaze supplied from an enamel glaze supply nozzle provided inside a coating chamber by feeding the preprocessed metal tube into the coating chamber; and (c) firing the coated metal tube by feeding the coated metal tube into a firing chamber, wherein the (b) coating includes spraying air toward the metal tube by an air spray nozzle provided inside the coating chamber.
Claims19
An enamel coating method of a metal tube, comprising:
- (a) preprocessing a surface of the metal tube by feeding the metal tube into a preprocessing chamber by an in-feed conveyor;
- (b) coating the surface of the metal tube with an enamel glaze supplied from an enamel glaze supply nozzle provided inside a coating chamber by feeding the preprocessed metal tube into the coating chamber;
- and
- (c) firing the coated metal tube by feeding the coated metal tube into a firing chamber,
- wherein the (b) coating includes spraying air toward the metal tube by an air spray nozzle provided inside the coating chamber.
An enamel coating apparatus comprising:
- a preprocessing chamber that preprocesses a surface of a metal tube fed from an in-feed conveyor while being rotated;
- a coating chamber that coats the surface of the metal tube with an enamel glaze supplied from an enamel glaze supply nozzle provided therein when the preprocessed metal tube is fed;
- and
- a coating unit that includes a firing chamber for firing the coated metal tube when the coated metal tube is fed,
- wherein an air spray nozzle for spraying air toward the metal tube is provided inside the coating chamber.
Dependencies are inferred from the claim text.