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Nozzle for a hot-dip coating system and method for operating same

A technology of hot-dip plating and tuyere, applied in hot-dip plating process, coating, metal material coating process, etc., can solve problems such as damage to product quality, large space requirements, expensive production, etc., to achieve improved pressure conditions, reliable pumping suction effect

Active Publication Date: 2020-01-31
THYSSENKRUPP STEEL EURO AG +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, such devices are relatively expensive to produce and have large space requirements
In addition, product quality is further compromised by the high saturation of zinc vapor in the gas atmosphere prior to immersion due to sealing

Method used

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  • Nozzle for a hot-dip coating system and method for operating same
  • Nozzle for a hot-dip coating system and method for operating same
  • Nozzle for a hot-dip coating system and method for operating same

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0041] figure 1 A schematic side view of an embodiment of the tuyere manifold ( 9 ) is shown. A tuyere branch (9) extends from the outlet of the continuous furnace (10) into the melt (13) of the coating bath.

[0042] Here, the flat product ( 11 ) to be coated is introduced into the melt ( 13 ) from the continuous furnace ( 10 ) via the tuyere manifold ( 9 ). The flat product ( 11 ) is not shown here guided through the continuous furnace ( 10 ) and the melt ( 13 ). In order to prevent additional sealing of the flat product (11) heated in the continuous furnace (10) from the surrounding environment, the tuyere branch (9) extends below the coating bath level (12). In the lower region of the tuyere branch (9) there is a blowing unit (1) as well as downstream in the material flow direction (M) and thus between the blowing unit (1) and the coating bath level (12) Suction unit (3). The blowing unit (1) and the suction unit (3) are arranged on both sides of the flat product (11) ...

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Abstract

The invention relates to a nozzle (9) for a hot-dip coating system for a flat product (11), said nozzle extending from the outlet of a continuous furnace (10) into a melt (13) below the coating bath level (12) and isolating the flat product (11) from the surroundings. At least one suction unit (3) and a blowing unit (1) are provided, and the at least one suction unit (3) is arranged between the atleast one blowing unit (1) and the coating bath level (12). The invention is characterized in that a pressure equalizing unit (7) is arranged between the blowing unit (1) and the outlet of the continuous furnace (10), and a first pressure sensor (14.1) is provided at the outlet of the continuous furnace (10) and a second pressure sensor (14.2) is provided between the coating bath level (12) and the pressure equalizing unit (7).

Description

technical field [0001] The present application describes the so-called "snout" construction (English: snout), such as is commonly used in industrial practice as the main equipment part of hot-dip coating or flame coating equipment. Via this tuyere branch, the metal flat product, e.g. steel, which has previously been heat-treated in a continuous process, is transferred in strip form to a coating bath consisting of molten metal (e.g. Zn-based or Al-based alloys), thus preventing Contact between a heat-treated surface and the ambient atmosphere. Background technique [0002] For example, a plant for continuous flame coating of steel strip consists of a continuous annealing furnace, a melting bath, a device for setting the coating thickness and a downstream cooling device. The steel strip is continuously annealed in a continuous furnace, in which the continuous furnace is divided into chambers in which different treatments take place. These treatments include, for example, the...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C23C2/00C23C2/40
CPCC23C2/40C23C2/004
Inventor 米夏埃尔·彼得斯斯里德哈·巴莱普马克·布卢梅瑙弗洛里安·施佩尔茨安德列亚斯·韦斯特费尔德海因里希·梅立恩
Owner THYSSENKRUPP STEEL EURO AG