Dry and wet gas mixing and humidifying device for inhibiting zinc ash in hot galvanizing and use method thereof

Abstract

The invention relates to the fields of hot-dip galvanizing alloy technology and auxiliary equipment used therefor, and specifically relates to a dry and wet gas mixing and humidifying device for inhibiting zinc ash in hot galvanizing and a use method thereof. The device comprises a furnace nose (10), and is characterized by also comprising a water tank (1), a water inlet pipe (21), a water discharge pipe (22), an air inlet pipe (23), a flow meter (33), a water level gauge (41), a heater (42), a dew-point instrument (43), a dry gas header pipe (5), a dry wet gas mixing pipe (6), and a control device (7). The use method comprises the following steps in sequence: (i) introducing dry gas; (ii) humidifying the dry gas; (iii) mixing dry gas and wet gas; and (iv) regulating the dew point. The device and method have the advantages that the zinc ash is well inhibited, the strip steel quality is high, the control is accurate, and the automation degree is high.

Description

technical field [0001] The invention relates to the field of hot-dip galvanizing alloy technology and auxiliary equipment used therefor, in particular to a dry and wet gas mixing humidifying device for hot-dip galvanizing to suppress zinc dust and a method for using the same. Background technique [0002] Steel is currently the most widely used metal in the world, but steel materials are easily corroded under the combined action of air and water. In order to reduce the corrosion of steel materials, the more common method is to coat the steel surface with protective Since zinc has good corrosion resistance in the atmosphere and is a relatively cheap metal, the cost of using zinc as a protective layer is low, so hot-dip galvanizing has become the most widely used method of metal rust prevention. [0003] The production of modern galvanized sheets generally has to go through stamping process, which puts forward high requirements on the ductility of strip steel. Therefore, the s...

AI Technical Summary

Problems solved by technology

Inside the furnace nose, since the zinc liquid is in a relatively closed space, the zinc dust floating on the surface of the zinc liquid will adhere to the surface of the strip steel, forming zinc dust marks, and then leaving indentations, white stripes, zinc dust on the surface of the strip steel. Surface defects such as gray marks seriously affect the surface quality of strip steel, which is not suitable for the needs of modern industry

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