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Intermediate-temperate zinc phosphating solution and preparation method thereof

A zinc-based phosphating solution and medium-temperature technology, applied in the direction of metal material coating technology, can solve the problems of difficult process control, safety, environmental protection, economy and cheapness, and many raw materials for formula selection, so as to shorten the phosphating time, the process is concise, and the The effect of saving resources

Inactive Publication Date: 2019-09-06
季新春
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Not limited to the patents listed above, although each has corresponding technical effects, there are many raw materials used in the formula
The process control is difficult, and there are disadvantages such as loss of safety, environmental protection, economy and cheapness.

Method used

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  • Intermediate-temperate zinc phosphating solution and preparation method thereof

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Embodiment 1

[0019] A kind of preparation method of medium-temperature zinc system phosphating solution, it is that earlier by the zinc oxide 10% of proportioning by mass percentage, drop into the container that is filled with water and is equipped with stirrer such as reactor and stir 10min, the rotating speed of stirrer is 100rpm, then sequentially add 11.5% nitric acid and 22% phosphoric acid according to the mass percentage ratio in the aforementioned container and continue to stir for 30min, the rotating speed of the stirring device when continuing to stir is 80rpm, then add successively into the aforementioned container according to the mass percentage ratio Manganese nitrate 2%, sodium molybdate 1%, sodium gluconate 1% and sodium chlorate 0.1%, then stirred for 25min, then the rotating speed of the stirring device during stirring was controlled to 90rpm, after the completion of stirring, the solution was clear , so as to obtain a medium-temperature zinc-based phosphating solution. T...

Embodiment 2

[0021] A kind of preparation method of medium-temperature zinc system phosphating solution, it is to drop into the container that is filled with water and is equipped with stirrer such as reactor 20min with the zinc oxide 12% of proportioning by mass percentage earlier, and the rotating speed of stirrer is 20min. 90rpm, then sequentially add 10% nitric acid and 18% phosphoric acid according to the mass percentage ratio to the aforementioned container and continue to stir for 20min. Manganese nitrate 1.5%, sodium molybdate 0.7%, sodium gluconate 2.7% and sodium chlorate 0.6%, then stirred for 30min, then the rotating speed of the stirring device during stirring was controlled to be 80rpm, after finishing and then stirring, the solution was clear , so as to obtain a medium-temperature zinc-based phosphating solution. It can be seen that the water in the present embodiment is 54.5%.

Embodiment 3

[0023] A kind of preparation method of middle temperature zinc system phosphating solution, it is to drop into the container that is filled with water and is equipped with stirring device such as reactor and stir 15min by the zinc oxide 11% of proportioning by mass percentage earlier, the rotating speed of stirring device is 80rpm, then sequentially add 13% nitric acid and 15% phosphoric acid according to the mass percentage ratio in the aforementioned container and continue to stir for 25min. Manganese nitrate 1%, sodium molybdate 0.5%, sodium gluconate 1.4% and sodium chlorate 1%, then stirred for 20min, then the rotating speed of the stirring device during stirring was controlled to 100rpm, after the completion of stirring, the solution was clear , so as to obtain a medium-temperature zinc-based phosphating solution. This shows that the water in the present embodiment is 57.1%.

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Abstract

The invention discloses an intermediate-temperate zinc phosphating solution and a preparation method thereof. 10%-12% of zinc oxide proportioned according to the mass percent is firstly put into a container to be stirred, wherein the container contains water and is provided with a stirring device; then 10%-13% of nitric acid and 15%-22% of phosphoric acid proportioned according to the mass percentare sequentially added into the container, and stirring continues; then 1%-2% of manganous nitrate, 0.5%-1% of sodium molybdate, 1%-2.7% of sodium gluconate and 0.1%-1% of sodium chlorate proportioned according to the mass percent are sequentially added into the container, and stirring continues; and the continuous stirring time and the rotating speed of the stirring device are controlled, and the intermediate-temperate zinc phosphating solution is obtained. Environmental protection and safety are embodied; the solid waste disposal expenses are reduced; economical performance is embodied; application is wide; the best phosphating effect is achieved; resources are saved, and the phosphating cost is reduced; and the process is simple, and no harsh equipment and process elements exist.

Description

technical field [0001] The invention belongs to the technical field of surface antirust treatment liquid and its preparation, in particular relates to a medium-temperature zinc-based phosphating liquid, and also relates to a preparation method thereof. Background technique [0002] As known in the industry, in order to improve the adhesion and corrosion resistance of the coating film, the phosphating process is used in the metal surface treatment, especially the phosphating treatment before the metal surface coating, the phosphating treatment before wire drawing, the steel pipe cold drawing and finishing rolling And the application of anti-rust phosphating treatment of steel pipe products is very extensive. Furthermore, as known in the industry, the use conditions of phosphating solution are normal temperature type and high temperature type. The normal temperature type phosphating solution is also called low temperature phosphating solution. Long and difficult to meet the r...

Claims

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Application Information

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IPC IPC(8): C23C22/40
CPCC23C22/40
Inventor 季卫才季新春
Owner 季新春
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