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A hot-dip galvanizing process

A process method and hot-dip galvanizing technology, applied in hot-dip plating process, metal material coating process, coating and other directions, can solve the problems of high zinc consumption, poor appearance quality, poor fluidity of zinc liquid, etc., to achieve high efficiency, low cost effect

Inactive Publication Date: 2017-11-07
GUANGDONG LUCKY HOT DIP GALVANIZING FACTORY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The temperature of the zinc bath also affects the production of zinc ash. If the temperature is too low, the fluidity of the zinc solution is poor, the coating is thick and uneven, easy to sag, and the appearance quality is poor; if the temperature is too high, the fluidity of the zinc solution is good, and the zinc solution is easy to separate from the workpiece. , and the iron loss of the workpiece and the zinc pot is serious, resulting in a large amount of zinc slag, which affects the quality of the galvanized layer and is easy to cause color difference and high zinc consumption
[0004] The traditional hot-dip galvanizing process has high energy consumption, poor thickness uniformity of the galvanized layer, corrosion resistance, surface hardness (wear resistance), etc.

Method used

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Embodiment Construction

[0046] The preferred embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings.

[0047] see figure 1 , figure 1 It is a hot-dip galvanizing process method of the present invention, and its process steps are as follows:

[0048] (1) Inspection before plating

[0049] According to the size and shape of workpieces, they are sorted and stacked;

[0050] Check the workpiece for cracks and defects;

[0051] The workpiece must have a hanging position or a hole position, and for hollow workpieces such as pipes, vent holes or zinc flow holes are required;

[0052] The impurities and welding slag on the surface of the workpiece should be cleaned up;

[0053] (2) pendant

[0054] According to the size, length, shape and binding method of the workpiece, identify and select special slings or slings for hanging;

[0055] (3) Washing

[0056] Lift the workpiece into the washing tank and pull it up and down for 3-4 times. Aft...

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Abstract

The invention discloses a hot galvanizing technical method. The hot galvanizing technical method comprises the following steps: 1, before-plating examination; 2, component suspending; 3, water washing, 4, acid derusting; 5, water washing; 6, surface cleanliness examination; 7, plating assisting; 8, hot galvanizing; 9, water-cooling; 10, zinc layer thickness examination; 11, passivating; 12, component unloading; 13, grinding, repairing and final examination. The hot galvanizing technical process provided by the invention has the advantages of being low in cost, lasting, durable, high in efficiency and the like.

Description

technical field [0001] The invention relates to a hot-dip galvanizing process method. Background technique [0002] Since France applied hot-dip galvanizing to industry in 1836, it has a history of more than 170 years. In the past thirty years, with the rapid development of cold-rolled strip steel, the hot-dip galvanizing industry has developed on a large scale. Hot-dip galvanizing is also called hot-dip galvanizing and hot-dip galvanizing: it is an effective metal anti-corrosion method, mainly used in metal structure facilities in various industries. It is to immerse the rust-removed steel parts in the molten zinc at about 500 ℃, so that the surface of the steel parts will be attached with a zinc layer, so as to achieve the purpose of anti-corrosion. [0003] Zinc ash and zinc slag not only affect the quality of the galvanized layer, cause the coating to be rough, produce zinc nodules, but also greatly increase the cost of hot-dip galvanizing. The size of the zinc pot ha...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C23C2/06
Inventor 伦霭珍
Owner GUANGDONG LUCKY HOT DIP GALVANIZING FACTORY
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