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A metal surface treatment process

A technology for metal surface treatment and metal workpieces, applied in the field of metal surface treatment technology and metal surface treatment agents, can solve the problems of uneven adhesion of metal surface treatment agents, uneven corrosion of metal surfaces, etc., achieve adhesion balance and reduce erosion Time, the effect of improving compatibility

Active Publication Date: 2019-11-22
NINGBO CITY XINGUANG SHELF
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0010] The purpose of the present invention is to provide a metal surface treatment process and a metal surface treatment agent to solve the problem in the prior art that when the metal surface is treated, the corrosion on the metal surface is uneven, resulting in uneven adhesion of the metal surface treatment agent

Method used

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Examples

Experimental program
Comparison scheme
Effect test

preparation example 1

[0070] Modified borax is vinyl alcohol modified borax, by weight, and its preparation method is:

[0071] 1) Weigh 0.2 parts of KH-560 and 35 parts of borax and mix and stir to obtain the borax mixture;

[0072] 2) Take by weighing 20 parts of vinyl alcohol monomers, 2 parts of sodium dodecylbenzenesulfonate and 2 parts of persulfate to be formulated into an aqueous solution, and then mix with the borax mixture obtained in step 1) for hydrothermal reaction After 0.5 hours, add 1 part of aluminum sulfate and ultrasonically disperse for 1 hour. After filtering and washing, the modified borax P1 is obtained. The particle size of borax is less than 100nm.

preparation example 2

[0074] Modified borax is vinyl alcohol modified borax, by weight, and its preparation method is:

[0075] 1) Weigh 0.3 parts of KH560 and 40 parts of borax and mix and stir to obtain the borax mixture;

[0076] 2) Take by weighing 25 parts of vinyl alcohol monomers, 5 parts of sodium dodecylbenzenesulfonate and 3 parts of persulfate to be formulated into an aqueous solution, and then mix with the borax mixture obtained in step 1) for hydrothermal reaction After 2 hours, add 2 parts of aluminum sulfate, and ultrasonically disperse for 1 hour. After filtering and washing, the modified borax P2 is obtained; the particle size of borax is less than 100nm.

preparation example 3

[0078] Modified borax is vinyl alcohol modified borax, by weight, and its preparation method is:

[0079] 1) Weigh 0.22 parts of KH560 and 38 parts of borax and mix and stir to obtain the borax mixture;

[0080] 2) Take by weighing 23 parts of vinyl alcohol monomers, 3 parts of sodium dodecylbenzene sulfonate and 2.6 parts of persulfate are formulated into aqueous solution, then mix with the borax mixture obtained in step 1) and then hydrothermally react After 1 hour, add 2 parts of aluminum sulfate and ultrasonically disperse for 1 hour. After filtering and washing, the modified borax P3 is obtained; the particle size of borax is less than 100nm.

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Abstract

The invention relates to a metal surface treating process and a metal surface treating agent. The metal surface treating process comprises the steps that a metal workpiece is degreased, subjected to wax removing and cleaned and then dried; sodium hydroxide aqueous solution steam of 0.8Mpa is pumped into a sealed erosion chamber, the metal workpiece is arranged in the erosion chamber and then placed in a salpeter solution for neutralizing treatment, and the surface of the metal workpiece is completely washed and then dried; and the surface of the metal workpiece is coated with the metal surfacetreating agent and subjected to heat treatment; and the metal surface treating agent is composed of an organic condensation compound, zirconium nitrate, titanium fluoride, hydrofluoric acid, modifiedborax and modified ferromanganese sulfate. According to the technical scheme, by using sodium hydroxide aqueous solution steam with pressure, sodium hydroxide does not form liquid flow on the metal surface, the surface of the metal workpiece eroded by the process is uniform, thus, the adhesiveness of the surface treating agent on the metal surface is balanced, and the corrosion resistance and abrasion resistance of the metal surface are improved.

Description

technical field [0001] The invention belongs to the technical field of metal surface treatment, in particular to a metal surface treatment process and a metal surface treatment agent. Background technique [0002] In order to improve the corrosion resistance of the metal surface, in the prior art, the metal surface is usually treated with chromate or phosphate. However, chromate has certain toxicity, and the cost of its treatment process and waste liquid treatment after treatment is very high, and the treatment effect is poor, which does not meet the requirements of the current society for environmental protection. [0003] When using phosphate to treat the metal surface, in order to ensure the corrosion resistance of the metal surface, it is also necessary to use chromic acid for rinsing treatment. Therefore, there is still the problem of chromium ion treatment. [0004] In order to prevent chromium ions from polluting the environment, there is a large amount of research o...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C23C22/34C23C22/78
CPCC23C22/34C23C22/78C23C2222/20
Inventor 朱旭光
Owner NINGBO CITY XINGUANG SHELF
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