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Hot galvanizing method

A technology of hot-dip galvanizing and galvanizing bath, applied in the field of anti-corrosion treatment of metal surface, can solve the problems of poor coating density, uneven coating thickness, unsightly color, etc., and achieve the effect of regular surface and uniform coating

Inactive Publication Date: 2010-12-01
XINGCHENG YUEJIN GALVANIZING
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  • Abstract
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  • Claims
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AI Technical Summary

Problems solved by technology

When the choice of plating flux is not good, the plating layer is not firmly attached, and it is easy to have missing plating, pores, and uneven thickness of the plating layer; Poor corrosion, and prone to plating corrosion, affecting service life

Method used

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Embodiment Construction

[0009] After pickling the iron and steel parts to be plated, put them into the plating flux solvent, soak for 5-10 minutes, take them out and dry them with hot air for 10-30 minutes at 80-100°C, and then immerse them in the hot-dip bath In contact with the galvanizing solution, the temperature of the galvanizing solution is controlled at 460-480°C. After 1-5 minutes, it is removed from the galvanizing solution, cooled quickly with 20-30°C airflow, and transferred out of the galvanizing area. Galvanized metal fittings.

[0010] Preparation of plating flux: Take ammonium chloride 100-250g, zinc chloride 300-500g, emulsifier OP-73g, emulsifier OP-102g, lauric acid glycerol fat emulsifier 1g, add to 1 liter of hot water, Stir to become an aqueous solution of plating flux.

[0011] The role of plating flux:

[0012] The plating flux made of ammonium chloride, zinc chloride and emulsifier can remove oxides on the surface of metal parts to be plated, reduce the surface tension of m...

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PUM

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Abstract

The invention provides a hot galvanizing method. The method comprises the following steps: washing ironware to be galvanized with acid, soaking the ironware in a plating assistant solvent for 5-10 minutes, taking out, and drying with hot air for 10-30 minutes under the condition of 80-100 DEG C; soaking in a hot galvanizing bath to contact the galvanizing solution, and controlling the temperature of the galvanizing solution at 460-480 DEG C; after 1-5 minutes, taking the ironware out of the galvanizing solution, and quickly cooling with air flow at 20-30 DEG C; and transferring the ironware out of the galvanizing region to obtain the galvanized ironware. The ironware made by the galvanizing method has the advantages of compactness, no galvanizing leakage, regular surface, uniform coating and corrosion resistance. The invention is suitable for hot-galvanizing an alloy layer on an iron surface.

Description

technical field [0001] The invention proposes a method for metal surface anticorrosion treatment in the field of metallurgy, specifically a hot-dip galvanizing method. Background technique [0002] Before the present invention proposes, when carrying out anticorrosion on ferrous metal surface, adopt the method for hot-dip plating usually, galvanize on steel device surface. The process of the existing galvanizing method is as follows: pickling and rust removal of iron and steel parts-removing oil and dirt-dip-coating transition layer-drying-adding to a galvanizing tank to contact with galvanizing liquid-taking out-cooling-finished product. Its key technology is the preparation of plating flux and the composition of zinc solution. When the choice of plating flux is not good, the plating layer is not firmly attached, and it is easy to have missing plating, pores, and uneven thickness of the plating layer; Corrosion is poor, and the coating is prone to corrosion, which affects...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C23C2/06
Inventor 张佐坤
Owner XINGCHENG YUEJIN GALVANIZING
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