Batch hot-dip galvanizing smokeless flux and its application method

A technology of hot-dip galvanizing and flux, which is applied in the fields of batch hot-dip galvanizing smokeless flux, metal surface treatment, and batch hot-dip galvanizing flux. Plating and other problems to achieve the effect of speeding up the amount of adhesion, avoiding missing plating, and saving production costs

Active Publication Date: 2015-11-04
JIANGSU FEITUO INTERFACE ENG TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In addition, some other patents use too much sodium chloride, potassium chloride, etc., and if the control is not good, it is easy to cause problems such as missing plating and replating, so it is not suitable for popularization.

Method used

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  • Batch hot-dip galvanizing smokeless flux and its application method
  • Batch hot-dip galvanizing smokeless flux and its application method
  • Batch hot-dip galvanizing smokeless flux and its application method

Examples

Experimental program
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Effect test

Embodiment 1

[0035] The batch hot-dip galvanizing smokeless plating flux of the present invention consists of the following components: 70 g / L of zinc chloride, 30 g / L of aluminum chloride, 5 g / L of sodium fluorosilicate, and 5 g / L of ammonia carboxyl compound. L, nonionic surfactant 2g / L, cationic surfactant 2g / L. Among them, R in the aminocarboxyl compound 1 In the molecular structure formula n=0, R 2 In the molecular structural formula, m=0; when the nonionic surfactant is fatty alcohol polyoxyethylene ether, R 3 is methyl, R 4 for C 2 Long-chain alkyl, m value is 2, n value is 25; R in cationic surfactant 9 is methyl, R 7 for C 6 long chain alkyl, R 6 , R 8 is a methyl group, and X is a halide ion.

Embodiment 2

[0037] The batch hot-dip galvanizing smokeless fluxing agent of the present invention is made up of following components: zinc chloride 70g / L, aluminum chloride 30g / L, sodium fluorosilicate 5g / L, ammonia carboxyl compound 10g / L L, nonionic surfactant 2g / L, cationic surfactant 3g / L. Among them, R in the aminocarboxyl compound 1 In the molecular structure formula n=1, R 2 In the molecular structural formula, m=1; when the nonionic surfactant is fatty alcohol polyoxyethylene ether, R 3 is ethyl, R 4 for C 3 Long-chain alkyl, m takes the value of 1, and n takes the value of 15; R in the cationic surfactant 9 is ethyl, R 7 for C 7 long chain alkyl, R 6 , R 8 is a methyl group, and X is a halide ion.

Embodiment 3

[0039] The batch hot-dip galvanizing smokeless plating flux of the present invention consists of the following components: 70 g / L of zinc chloride, 30 g / L of aluminum chloride, 5 g / L of sodium fluorosilicate, and 20 g / L of ammonia carboxyl compound. L, nonionic surfactant 2g / L, cationic surfactant 4g / L. Among them, R in the aminocarboxyl compound 1 In the molecular structure formula n=2, R 2In the molecular structural formula, m=2; when the nonionic surfactant is fatty alcohol polyoxyethylene ether, R 3 is propyl, R 4 for C 4 Long-chain alkyl, m takes the value of 0, and n takes the value of 10; in cationic surfactants, R 9 is propyl, R 7 for C 8 long chain alkyl, R 6 , R 8 is a methyl group, and X is a halide ion.

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PUM

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Abstract

The invention discloses a batch hot-dip galvanizing smoke-free assistant. The batch hot-dip galvanizing smoke-free assistant comprises the following components: 70-300g / L zinc chloride, 0-30g / L aluminum chloride, 5-40g / L sodium fluosilicate, 0-15g / L amino carboxyl compound, 2-10g / L non-ionic surfactant and 2-12g / L cationic surfactant. The invention further discloses a use method of the batch hot-dip galvanizing smoke-free assistant. The use method comprises the following steps of: controlling the total concentration of the complex salt of the batch hot-dip galvanizing smoke-free assistant at 120-400g / L, the temperature of the batch hot-dip galvanizing smoke-free assistant at 40-80 DEG C and the pH value of the batch hot-dip galvanizing smoke-free assistant at 3-3.5; and washing a workpiece by an acid and water, directly immersing into the batch hot-dip galvanizing smoke-free assistant, galvanizing for 5-10 minutes, and drying at the temperature of 60-120 DEG C. The batch hot-dip galvanizing smoke-free assistant disclosed by the invention has the advantage of wetability and penetrability, and can increase the salt-film adhesion speed and the salt-film adhesion amount when being used for galvanizing at low temperature, control the salt-film adhesion amount when being used for galvanizing at high temperature, reduce the ash production amount and avoid the problem of moisture regain and zinc explosion due to zinc chloride redundancy.

Description

technical field [0001] The invention relates to metal surface treatment technology, in particular to a smokeless fluxing agent for batch hot-dip galvanizing. [0002] The invention also relates to a method for using a plating flux for batch hot-dip galvanizing, which belongs to the technical field of metal material anticorrosion. Background technique [0003] Coating metal or other non-metallic coatings on the metal surface can effectively prevent the corrosion of the base metal. The hot-dip metal plating process includes hot-dip galvanizing, hot-dip aluminum plating, hot-dip galvanized aluminum alloy, etc. Most of them use the solvent method, that is, the metal to be plated is immersed in a molten liquid metal bath, and after the workpiece is cooled, a layer is formed on the surface. Very thin metal coating, so that the corrosion resistance is greatly improved. [0004] Solvent-assisted plating is an important process in the pre-treatment of hot-dip galvanizing. It can no...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C23C2/02C23C2/06
Inventor 郑建周汉涛周德龙邢丹丹陈春雷吕明春
Owner JIANGSU FEITUO INTERFACE ENG TECH CO LTD
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