Method and apparatus for hot-dip metal coating of metal strip

一种金属涂层、金属带的技术，应用在对表面涂布液体的装置、金属材料涂层工艺、热浸镀工艺等方向，能够解决气体消耗、喷嘴梁金属带间隔大等问题，达到低消耗、最佳过程稳定性、小受干扰程度的效果

Inactive Publication Date: 2017-05-24
THYSSENKRUPP STEEL EURO AG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Another disadvantage of this method is the environment, i.e. most of the air flow of the nozzle beam and the metal strip are separated so that the slag is also scraped from the bath surface at positions where there is no risk of slag penetrating the metal strip at all
This leads to unnecessary gas consumption

Method used

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  • Method and apparatus for hot-dip metal coating of metal strip
  • Method and apparatus for hot-dip metal coating of metal strip
  • Method and apparatus for hot-dip metal coating of metal strip

Examples

Experimental program
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Effect test

Embodiment Construction

[0071] The device 1 for the hot-dip coating of metal strip M comprises a molten bath 3 filled in a boiler 2 into which the metal strip M to be coated, heated in a known manner beforehand to a sufficient immersion temperature, enters this molten bath via a tuyere branch 4, where The metal strip is, for example, a cold-rolled steel strip made of corrosion-sensitive steel.

[0072] In the molten bath 3 , the metal strip M is deflected on guide rollers 5 in such a way that it leaves the molten bath 3 in the vertical direction of transport F. Therein, the metal strip M leaving the molten pool 3 passes through a stripping device 7 arranged at a distance above the surface 6 of the molten pool 3 . The stripping device here comprises stripping nozzles 8, 9 formed as slit nozzles, wherein one stripping nozzle directs the stripping air flow AG1 at the surface O1 of the metal strip M, which surface is between the longitudinal edges of the metal strip M. and another stripping nozzle direc...

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Abstract

The invention relates to a device and a method for hot-dipping a metal strip (M) with a metal coating, in the method: the metal strip (M) passes through the molten pool (3) continuously; (3) Thickness of the metal coating on the metal strip (M) at the exit; the slag (S) on the molten pool (3) is removed from the metal strip (M) leaving the molten pool (3) by means of the gas flow (G1, G2) remove. In order to prevent the molten slag from touching the metal strip leaving the bath in a simple and cost-effective manner in this method and thus ensure an optimum surface quality, the invention proposes that by means of at least one nozzle (10, 11) Directing the gas flow (G1, G2) extending over the width (B) of the metal strip (M) to the surface (6) of the molten pool (3) to remove the slag (S) from the metal strip (M).

Description

technical field [0001] The invention relates to a method for hot-dip metallizing a metal strip, in which method: the metal strip passes continuously through the molten pool; the thickness of the metal coating on the metal strip at the outlet of the molten pool is adjusted by means of a stripping device; The slag on the molten pool is removed from the metal strip leaving the molten pool. The metal strip coated in this way is usually hot-rolled or cold-rolled. [0002] The invention also relates to a device for hot-dip metal coating of a metal strip, wherein the device comprises a molten bath, transport equipment for continuously passing the metal strip through the molten bath, for adjusting the metal coating on the metal strip at the outlet of the molten bath Thickness stripping means and at least one nozzle injecting a gas flow that removes slag on the molten pool from the metal strip leaving the molten pool. Background technique [0003] A continuous hot-dip coating proce...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C23C2/00C23C2/14C23C2/16C23C2/18C23C2/20
CPCC23C2/14C23C2/16C23C2/18C23C2/20C23C2/00344C23C2/325C23C2/544C23C2/22C23C2/40B05C11/06B05D7/142B05C11/021
Inventor 克里斯托弗·古泽克约尔格·舒尔特马克·布卢梅瑙弗莱德·金德拉德克·楚普利那鲁道夫·舍南伯格
Owner THYSSENKRUPP STEEL EURO AG
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