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Plating assisting agent for batch hot-dip coating of Galfan and preparation method of plating assisting agent

A kind of flux, hot-dip technology, applied in hot-dip plating process, coating, metal material coating process, etc., can solve the problems of dark coating surface, difficult surface infiltration, leakage plating, etc., to promote the replacement reaction, volume The effect of small and large affinity

Active Publication Date: 2016-01-06
TIANJIN GONGDA GALVANIZING EQUIP CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0014] Aiming at the technical problems existing in hot-galvanized Galfan for existing structural parts, the technical problem to be solved by the present invention is to provide a kind of flux and preparation method for hot-galvanized Galfan in batches
This flux is designed for batch hot-dip Galfan of structural parts, and solves the common problems of missed plating, weak coating bonding, dark coating surface and various shapes of structural parts that commonly occur in the hot-dip Galfan process of most Si-containing structural parts. The surface is difficult to wet and other technical problems; at the same time, the flux can effectively inhibit the activity of aluminum in the Galfan bath

Method used

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  • Plating assisting agent for batch hot-dip coating of Galfan and preparation method of plating assisting agent
  • Plating assisting agent for batch hot-dip coating of Galfan and preparation method of plating assisting agent
  • Plating assisting agent for batch hot-dip coating of Galfan and preparation method of plating assisting agent

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0066] The formula that the flux of present embodiment batch hot-plating Galfan calculates with every liter of flux is:

[0067] Zinc chloride 150g,

[0068] The alkali metal chloride is sodium chloride, 20g,

[0069] Bismuth chloride or / and tin chloride is tin chloride, 20g,

[0070] Transition metal element chloride is nickel chloride, 5g,

[0071] Calcium chloride 10g,

[0072] The rare earth chloride is cerium chloride, 2g,

[0073] Industrial hydrochloric acid 25ml, the concentration of industrial hydrochloric acid is 32wt%.

[0074] The rest is water.

[0075] The preparation method of present embodiment plating flux is:

[0076] (1) According to the above formula, the ingredients are taken by weighing, and the industrial hydrochloric acid taken is divided into 5 parts on average, each part of 5ml;

[0077] (2) Dissolve zinc chloride in water, stir while dissolving, add 15ml of industrial hydrochloric acid after stirring evenly, mark it as liquid A;

[0078] (3) ...

Embodiment 2

[0084] The formula that the flux of present embodiment batch hot-plating Galfan calculates with every liter of flux is:

[0085] Zinc chloride 100g,

[0086] The alkali metal chloride is potassium chloride, 10g,

[0087] Bismuth chloride or / and tin chloride is bismuth chloride, 10g,

[0088] Transition metal element chloride is vanadium chloride, 2g,

[0089] Calcium chloride 5g

[0090] The rare earth chloride is lanthanum chloride, 1g,

[0091] Industrial hydrochloric acid 20ml, the concentration of industrial hydrochloric acid is 32wt%.

[0092] The rest is water.

[0093] The preparation method of the plating flux of this embodiment is the same as that of Embodiment 1.

[0094] Take the Si-containing steel structure, then degrease, wash with water, pickle for 5 minutes, and then wash with water for pretreatment.

[0095] Put the plating flux prepared in this example into a water bath and heat it to 60°C, then put the above-mentioned pretreated Si steel structure into ...

Embodiment 3

[0097] The formula that the flux of present embodiment batch hot-plating Galfan calculates with every liter of flux is:

[0098] Zinc chloride 180g,

[0099] The alkali metal chloride is potassium chloride, 15g,

[0100] Bismuth chloride or / and tin chloride is bismuth chloride, 12g,

[0101] Transition metal element chloride is nickel chloride, 2g,

[0102] Calcium chloride 5g

[0103] The rare earth chloride is lanthanum chloride, 1g,

[0104] Industrial hydrochloric acid 20ml, the concentration of industrial hydrochloric acid is 32wt%.

[0105] The rest is water.

[0106] And prepare this plating flux according to the step described in embodiment 1.

[0107] The structural parts in this embodiment are HRB400 rebars (structural steel, continuous hot-dip plating cannot be used) with diameters of 10 mm and 20 mm respectively, and are pretreated by degreasing, washing with water, pickling for 5 minutes, and washing with water again.

[0108] Heat the fluxing agent prepare...

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Abstract

The invention relates to a plating assisting agent for batch hot-dip coating of Galfan and a preparation method of the plating assisting agent. The plating assisting agent is characterized in that according to the formula of calculation of each liter of plating assisting agent, the plating assisting agent comprises 80-180 g of ZnCl2, 10-30 g of alkali chloride, 10-30 g of bismuth chloride and / or tin chloride, 2-10 g of transition metal element chloride which does not contain rear earth elements or zinc chloride and can be dissolved in water, 5-25 g of calcium chloride, 1-10 g of rare earth chloride, 15-25 ml of industrial hydrochloric acid and the balance water, wherein the rare earth chloride comprises at least one of lanthanum chloride and cerium chloride.

Description

technical field [0001] The technical field that the present invention relates to is the chemical substance and its solution used in order to keep the cleanliness and activity of steel surface after pickling of structural parts, specifically relates to a kind of plating flux of hot-dipping Galfan in batches and preparation method thereof. Background technique [0002] Hot-dip galvanizing and its alloying is a surface treatment method commonly used for the protection of steel products in atmospheric environments. With the depletion of energy and the enhancement of people's environmental awareness, higher requirements are put forward for the preparation process and performance of the protective coating. Studies have shown that alloying is one of the effective methods to improve the corrosion resistance of coatings. Galfan is a new generation of hot-dip alloy, that is, zinc-5% aluminum-rare earth alloy coating. [0003] At present, the batch hot-dip galvanizing process is to d...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C23C2/06
Inventor 曹晓明乔腾波温鸣
Owner TIANJIN GONGDA GALVANIZING EQUIP CO LTD
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