Water-based cleaning agent with iron rust and copper rust removing function as well as preparation method thereof

A water-based rust removal technology, applied in the field of metal cleaning agents, can solve the problems that iron and copper oxides and flux residues cannot be completely cleaned, and achieve the effect of excellent cleaning ability

Inactive Publication Date: 2019-01-04
MAANSHAN TUORUI METAL SURFACE TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Although the current conventional acid-base cleaning agent has a good effect on cleaning oil and dirt on stamping and welding workp...

Method used

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  • Water-based cleaning agent with iron rust and copper rust removing function as well as preparation method thereof
  • Water-based cleaning agent with iron rust and copper rust removing function as well as preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] Weigh the raw materials according to the proportion, and the mass percentage of each raw material is: 2% nitric acid, 2% citric acid, 1% fatty alcohol polyoxyethylene ether, 1% thiourea, 1% tetrasodium edetate , 0.2% 726 defoamer, and the rest is water.

[0025] First add water to mix and add, stir until completely dissolved.

[0026] The cleaning agent prepared in this example was tested for degreasing rate, foam performance and hydrophilic performance respectively, and the results are shown in Table 1.

Embodiment 2

[0028] Weigh the raw materials according to the ratio, and the mass percentage of each raw material is: 3% phosphoric acid, 3% EDTA, 1% fatty alcohol polyoxyethylene ether, 1% succinic acid, 1% tetrasodium ethylenediaminetetraacetic acid , 0.2% 726 defoamer, and the rest is water.

[0029] First add water to mix and add, stir until completely dissolved.

[0030] The cleaning agent prepared in this example was tested for degreasing rate, foam performance and hydrophilic performance respectively, and the results are shown in Table 1.

Embodiment 3

[0032] The raw materials are weighed according to the ratio, and the mass percentages of each raw material are: 4% sulfuric acid, 4% HEDP, 1% fatty alcohol polyoxyethylene ether, 1% thiourea, 1% tetrasodium edetate, 0.2% 726 defoamer, the rest is water.

[0033] First add water to mix and add, stir until completely dissolved.

[0034] The cleaning agent prepared in this example was tested for degreasing rate, foam performance and hydrophilic performance respectively, and the results are shown in Table 1.

[0035] Evaluation method:

[0036] a. Derusting appearance: visually evaluate the flux residue on the surface of the copper tube and the surface of the welding part.

[0037] Judgment criteria:

[0038] Level 0: Complete removal of more than 98%

[0039] Level 1: Complete removal (90-98%)

[0040] Level 2: Complete removal (70-90%)

[0041] Level 3: Complete removal (50-70%)

[0042] Level 4: Complete removal (30-50%)

[0043] Level 5: Complete removal (0-30%)

[00...

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PUM

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Abstract

The invention discloses a water-based cleaning agent with an iron rust and copper rust removing function as well as a preparation method thereof, and belongs to the technical field of a metal cleaningagent. An excellent surfactant is selected and has excellent cleaning ability at medium and high temperature; the selected inorganic acid and organic acid can completely clean oxide and soldering flux generated during steel welding; a skin membrane generated by special organic acid is adopted and the cleaned steel surface has a certain anti-rust property; furthermore, after cleaning, obvious residues or exotic matters do not exist on the surface of the steel plate.

Description

technical field [0001] The invention relates to the technical field of metal cleaning agents, in particular to a water-based cleaning agent with the function of removing rust and copper rust and a preparation method thereof. Background technique [0002] With the rapid development of the metal processing industry, the cleaning requirements of metal processed products are also increasing, and the cleaning content is also varied. The original conventional metal cleaning agents cannot meet the requirements of special products and special processes. [0003] After the stamping process of the refrigerator compressor shell, the copper pipe is welded by fire before assembly. Use a flux containing borax during the soldering process. Because the refrigerator compressor uses refrigerant after assembly, it is required that the stamping and welding workpieces must be cleaned of oil stains, oxide scales produced by high-temperature oxidation on the surface of iron and copper tubes, and ...

Claims

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Application Information

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IPC IPC(8): C23G1/06C23G1/10C23G1/08
CPCC23G1/06C23G1/065C23G1/088C23G1/103
Inventor 洪光日
Owner MAANSHAN TUORUI METAL SURFACE TECH
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