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Preparation method of zinc-series metal treatment fluid

A metal treatment, zinc-based technology, applied in the direction of metal material coating technology, etc., can solve the problems of environmental treatment burden of phosphate, short service life of phosphating solution, and high phosphating temperature, and achieve faster phosphating speed and corrosion inhibitor. The effect of thickness and nucleation density on corrosion resistance

Active Publication Date: 2016-04-13
广东志远环保设备有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, the common problems of domestic phosphating technology are: high phosphating temperature, short service life of phosphating solution, difficult washing and water pollution, which not only bring burden to environmental governance but also consume a lot of water, phosphate and other resources

Method used

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  • Preparation method of zinc-series metal treatment fluid

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0039] The raw materials of the phosphating solution are composed in parts by weight: 100 parts of zinc dihydrogen phosphate, 25 parts of zinc oxide, 30 parts of phosphoric acid nitric acid mixed solution, 15 parts of calcium nitrate, 2 parts of manganese carbonate, 2 parts of sodium fluorosilicate, sulfuric acid 4 parts of hydroxylamine, 4 parts of triazole compound, 2 parts of sodium citrate, 10 parts of polyphosphate, 2 parts of sodium fluoride, 2 parts of ammonium peroxodisulfate, 5 parts of sodium molybdate, 1 part of hexamethylenetetramine , 3 parts of sodium cyclic trimetaphosphate, 2 parts of nickel sulfate.

[0040] The preparation method is as follows: first dissolve 25 parts of zinc oxide in an acid-resistant container or a phosphating tank with an appropriate amount of water, stir thoroughly, then add 30 parts of phosphoric acid nitric acid mixture and continue stirring, heat to 100-120°C for 2 hours to fully dissolve reaction, after fully reacting, add 100 parts o...

Embodiment 2

[0042] The raw materials of the phosphating solution are composed in parts by weight: 100 parts of zinc dihydrogen phosphate, 25 parts of zinc oxide, 40 parts of phosphoric acid nitric acid mixed solution, 20 parts of calcium nitrate, 2 parts of manganese carbonate, 3.5 parts of sodium fluorosilicate, sulfuric acid 4 parts of hydroxylamine, 4 parts of triazole compound, 2 parts of sodium citrate, 10 parts of polyphosphate, 3 parts of sodium fluoride, 2 parts of ammonium peroxodisulfate, 5 parts of sodium molybdate, 1 part of hexamethylenetetramine , 3 parts of sodium cyclic trimetaphosphate, and 2 parts of nickel sulfate. It can be seen that compared with Example 1, the configuration of the activator component has been increased.

[0043] The preparation method is as follows: first dissolve 25 parts of zinc oxide in an acid-resistant container or a phosphating tank with an appropriate amount of water, stir thoroughly, then add 40 parts of phosphoric acid nitric acid mixture and...

Embodiment 3

[0045] The raw materials of the phosphating solution are composed in parts by weight: 100 parts of zinc dihydrogen phosphate, 25 parts of zinc oxide, 40 parts of phosphoric acid nitric acid mixed solution, 20 parts of calcium nitrate, 2 parts of manganese carbonate, 2 parts of sodium fluorosilicate, sulfuric acid 4 parts of hydroxylamine, 6 parts of triazole compound, 2 parts of sodium citrate, 10 parts of polyphosphate, 2 parts of sodium fluoride, 2 parts of ammonium peroxodisulfate, 8 parts of sodium molybdate, 1 part of hexamethylenetetramine , 3 parts of sodium cyclic trimetaphosphate, and 2 parts of nickel sulfate. It can be seen that compared with Example 1, the configuration of the oxidant component has been increased.

[0046] Its preparation method is as follows: first dissolve 15 parts of zinc oxide in an acid-resistant container or phosphating tank with an appropriate amount of water, stir thoroughly, then add 40 parts of phosphoric acid and continue stirring, heat t...

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Abstract

The invention discloses a preparation method of a zinc-series metal treatment fluid, and also discloses a using method of the zinc-series metal treatment fluid. The zinc-series metal treatment fluid comprises the following raw materials in parts by weight: 80-150 parts of zinc dihydrogen phosphate, 20-40 parts of zinc oxide, 15-40 parts of a phosphoric acid and nitric acid mixed solution, 10-30 parts of calcium nitrate, 2-5 parts of manganese carbonate, 2-4 parts of sodium fluorosilicate, 1-4 parts of hydroxylamine sulphate, 3-6 parts of a triazole compound, 2-3 parts of sodium citrate, 5-15 parts of a polyphosphate, 1-3 parts of sodium fluoride, 1-2 parts of ammonium peroxydisulfate, 5-10 parts of sodium molybdate, 1-3 parts of hexamethylenetetramine, 3-5 parts of sodium trimetaphosphate, and 2-4 parts of nickel sulfate.

Description

technical field [0001] The invention relates to a method for preparing a zinc-based metal treatment solution, in particular to a method for preparing a phosphating solution suitable for phosphating the surface of a metal workpiece before painting, and also discloses a method for using the phosphating solution. Background technique [0002] Phosphating surface treatment of metals is a process in which iron and steel are treated in a phosphating solution composed of dihydrogen phosphate, oxidants, additives, etc., and a phosphating film with a thickness of several microns is formed on the surface, including zinc-based zinc-calcium-based, Manganese series and iron series and other types. Phosphating film is mainly used as the bottom layer of paint, lubricating layer during metal cold working, and metal surface protection layer, etc., which can play various functions such as rust prevention, wear reduction, lubrication, and improvement of adhesion between paint and metal substra...

Claims

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Application Information

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IPC IPC(8): C23C22/44C23C22/73C23C22/76
CPCC23C22/44C23C22/73C23C22/76
Inventor 董晓娜
Owner 广东志远环保设备有限公司
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