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Novel plating auxiliary for single hot-dipping of Galfan alloy in solvent method and a preparation method thereof

A technology of plating flux and solvent method, which is applied in hot-dip plating process, metal material coating process, coating, etc., can solve the problems of unstable composition of plating flux, high cost, high cost, etc., and achieve the surface quality of the coating Stable, no tumor, wide range of effects

Active Publication Date: 2018-10-09
HEBEI UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] In view of the high cost and high energy consumption of the existing double Galfan plating, and the problems of serious missing plating, unstable flux composition and high cost in the solvent method single Galfan alloy plating process, the present invention provides a new solvent method single Galfan alloy plating flux and preparation method thereof

Method used

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  • Novel plating auxiliary for single hot-dipping of Galfan alloy in solvent method and a preparation method thereof
  • Novel plating auxiliary for single hot-dipping of Galfan alloy in solvent method and a preparation method thereof
  • Novel plating auxiliary for single hot-dipping of Galfan alloy in solvent method and a preparation method thereof

Examples

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Effect test

Embodiment 1

[0039] The present embodiment novel solvent method single plating Galfan alloy plating flux, comprises in every liter of deionized water:

[0040] ZnCl 2 : 100g;

[0041] ZnBr 2 :50g

[0042] SnCl 2 : 10g;

[0043] KF: 8g;

[0044] BiCl3: 0.5g;

[0045] NaCl: 5g

[0046] Hydrochloric acid: 15ml; the mass fraction of hydrochloric acid is 32%;

[0047] Sodium borohydride: 0.5 g.

[0048] The preparation method of plating flux is:

[0049] (1) Take 400ml deionized water, add zinc chloride and zinc bromide, then place on a magnetic stirrer and stir until completely dissolved, marked as 1# solution;

[0050] (2) get stannous chloride and be dissolved in hydrochloric acid, stir until completely dissolving, mark as 2# solution;

[0051] (3) Take 90ml of deionized water and add potassium fluoride, stir until completely dissolved, and mark it as 3# solution;

[0052] (4) Pour the 2# solution into the 1# solution and stir, then add the 3# solution, stir while adding, and fin...

Embodiment 2

[0058] Embodiment 2: a kind of hot-dip plating Galfan alloy flux, every liter of deionized water comprises:

[0059] ZnCl 2 : 150g;

[0060] ZnBr 2 :80g

[0061] SnCl 2 : 15g;

[0062] KF: 8g;

[0063] NaCl: 5g;

[0064] Hydrochloric acid: 20ml; the mass fraction of hydrochloric acid is 32%;

[0065] Sodium borohydride: 1g;

[0066] The preparation method of the fluxing agent and the hot-dip plating process flow are the same as in Example 1.

[0067] Take the rebar with diameters of 10mm, 20mm and 500mm in length, degrease, wash with water, pickle and derust, and obtain a clean steel base surface through the washing process, put the rebar into the plating flux and soak for 30 minutes at room temperature -40s, dry at 150°C for 2-3min, then hot-dip the rebar in a Galfan alloy solution at a temperature of 420-475°C, the dipping time is 1min, and then slowly take it out for cooling to obtain a hot-dipped Galfan Alloy coated rebar, such as figure 2 shown. The implement...

Embodiment 3

[0068] Embodiment 3: a kind of hot-dip Galfan alloy plating flux, every liter of deionized water comprises:

[0069] ZnCl2: 100g;

[0070] ZnBr 2 :100g;

[0071] SnCl2: 20g;

[0072] KF: 10g;

[0073] NaCl: 5g;

[0074] KCl: 5g;

[0075] Hydrochloric acid: 20ml; the mass fraction of hydrochloric acid is 32%;

[0076] Sodium borohydride: 1g;

[0077] The preparation method of the fluxing agent and the hot-dip plating process flow are the same as in Example 1.

[0078] Take the Q235 steel plate, degrease, wash with water, pickle and remove rust, and wash with water to obtain a clean steel base surface, put the steel plate into the plating flux, soak at room temperature for 30-40s, and dry at 150°C for 2-3min , and then hot-dip the steel plate in a Galfan alloy solution at a temperature of 420-475° C. for 1 min, and then slowly take it out for cooling to obtain a hot-dip Galfan alloy-coated steel plate. The implementation results show that: at room temperature, the Galfa...

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Abstract

The invention provides a novel plating auxiliary for single hot-dipping of a Galfan alloy in a solvent method and a preparation method thereof. According to the plating auxiliary, per liter of the plating auxiliary is prepared from the following components of 100-150 g / L of ZnCl2, 50-100 g / L of ZnBr, 10-20 g / L of SnCl, 8-12 g / L of KF, 0-0.5 g / L of bismuth chloride, 0.5-2 g / L of sodium borohydride,0.1-0.3 g / L of hydrochloric acid, 5-15 g / L of active alkali metal chloride salt and the balance water. The plating auxiliary has the advantages that the zinc bromide, the sodium borohydride and the potassium fluoride are introduced into the plating auxiliary, so that a surfactant and rare-earth chloride which are expensive in price are avoided, the application range is wider, almost all steel products are covered, and therefore the problems of serious skip plating, air holes, list edges, slag inclusion and the like in the Galfan alloy hot-dipping process in the prior art can be effectively solved; and the plating auxiliary can play a good plating assisting role when being used at room temperature, the production cost is greatly saved, the components of the plating auxiliary are stable, the cost is low, and industrial popularization is facilitated.

Description

technical field [0001] The invention belongs to the technical field of hot-dip anticorrosion plating for iron and steel materials, and in particular relates to a novel solvent method single plating Galfan alloy fluxing agent and a preparation method thereof. Background technique [0002] The fluxing process is a key link in the process of solvent hot-dip Galfan, which directly determines the coating quality of the plated parts. It not only makes up for the deficiencies of the previous processes, but also activates the surface of the steel base and improves the quality of galvanizing. The solvent method is to use the plating flux to keep the clean steel surface for immersion plating, which is mainly divided into single plating method and double plating method. At present, the method applied to hot-dip Galfan alloy is mainly the double-plating method, and its typical process flow is: degreasing → pickling → water washing → solvent-assisted plating → galvanizing → dipping Galfa...

Claims

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Application Information

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IPC IPC(8): C23C2/02C23C2/06
CPCC23C2/02C23C2/06
Inventor 李冲冲曹晓明范永哲马瑞娜杜安
Owner HEBEI UNIV OF TECH
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