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Phosphorus-free electrolytic degreasing powder for steel and preparation method thereof

A technology of fat powder and steel, applied in the field of phosphorus-free electrolytic degreasing powder and its preparation, can solve problems such as poor dissolution and emulsification performance, unscientific and reasonable ratio of raw materials, and impact on use costs, etc.

Inactive Publication Date: 2009-11-04
JIANGSU DEMEI TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The existing electrolytic degreasing powder contains phosphorus compounds, which is not good for safety and environmental protection, and its raw material ratio is not scientific and reasonable, resulting in poor dissolution and emulsification performance, poor degreasing and decontamination effects, and difficult sewage treatment. Affect the cost of use

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] (1) Mix 10 kilograms of sodium carbonate with 3 kilograms of sodium gluconate, and stir to obtain powder A;

[0028] (2) Mix 10 kilograms of sodium alkylsulfonate, 2 kilograms of isomeric alcohol polyoxyethylene ethers, and 8 kilograms of nonylphenol polyoxyethylene ethers, add A powder after stirring, and then stir evenly to obtain B powder;

[0029] (3) Add 20 kg of sodium metasilicate pentahydrate, 2 kg of disodium edetate and 45 kg of sodium hydroxide into powder B, and stir evenly to obtain the finished phosphorus-free electrolytic degreasing powder.

Embodiment 2

[0031] (1) 35 kilograms of sodium carbonate are mixed with 4 kilograms of sodium gluconate, and stirred to obtain A powder;

[0032] (2) 3 kilograms of sodium alkylsulfonate, 3 kilograms of isomeric alcohol polyoxyethylene ethers, and 6 kilograms of nonylphenol polyoxyethylene ethers are mixed, after stirring, A powder is added, and then stirred evenly to obtain B powder;

[0033] (3) Add 25 kg of sodium metasilicate pentahydrate, 4 kg of disodium edetate and 20 kg of sodium hydroxide into powder B, and stir evenly to obtain the finished phosphorus-free electrolytic degreasing powder.

Embodiment 3

[0035] (1) 21 kilograms of sodium carbonate are mixed with 8 kilograms of sodium gluconate, and stirred to obtain A powder;

[0036] (2) 5 kilograms of sodium alkylsulfonate, 4 kilograms of isomerized alcohol polyoxyethylene ethers, and 3 kilograms of nonylphenol polyoxyethylene ethers are mixed, after stirring, A powder is added, and then stirred evenly to obtain B powder;

[0037] (3) Add 19 kilograms of sodium metasilicate pentahydrate, 5 kilograms of disodium edetate and 35 kilograms of sodium hydroxide into powder B, and stir evenly to obtain the finished phosphorus-free electrolytic degreasing powder.

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Abstract

The invention discloses phosphorus-free electrolytic degreasing powder for steel and a preparation method thereof. The phosphorus-free electrolytic degreasing powder comprises the following raw materials according to the weight portion: 10-40 of sodium carbonate, 3-16 of gluconic acid sodium salt, 2-10 of sodium alkyl sulfonate, 1-6 of isoalcohol polyethenoxy ether, 1-8 of polyoxyethylene nonyl phenyl ether, 10-30 of pentahydrate sodium metasilicate, 2-10 of disodium ethylene diamine tetraacetate and 15-45 of sodium hydroxide. The preparation of the degreasing powder is completed by three steps, and all the raw materials are fully mixed and uniformly stirred. The degreasing powder has no phosphorus and toxicity, is non-combustible, non-explosive, safe and environmental-friendly, is used for electrolytic degreasing on the surface of the steel, and has good use effect, simple preparation and low use cost.

Description

technical field [0001] The invention relates to a degreasing powder used for electrolytic degreasing treatment of iron and steel surfaces, in particular to a phosphorus-free electrolytic degreasing powder and a preparation method thereof. Background technique [0002] Steel parts need to be degreased after processing. Regardless of chemical degreasing or electrolytic degreasing, degreasing powder must be used in the treatment process. Relying on the emulsifying performance and descaling ability of degreasing powder, animal oil, vegetable oil and minerals on the metal surface can be effectively removed. Oil, heavy machine oil, butter and other greasy dirt. The existing electrolytic degreasing powder contains phosphorus compounds, which is not good for safety and environmental protection, and its raw material ratio is not scientific and reasonable, resulting in poor dissolution and emulsification performance, poor degreasing and decontamination effects, and difficult sewage tr...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C25F1/06
Inventor 瞿德勤
Owner JIANGSU DEMEI TECH
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