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High-efficiency and environment-friendly steel strip degreasing agent and preparation and using method thereof

A degreasing agent and steel strip technology, applied in the field of metal surface chemical treatment, can solve the problems of poor anti-corrosion performance, low degreasing efficiency, high investment cost, etc., and achieve the effect of long service life, strong degreasing ability and high product concentration

Inactive Publication Date: 2018-07-20
WUXI CITY XIDONG RUBBER & PLASTICS MACHINERY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Aiming at the problems of poor anti-corrosion performance, high investment cost, and low degreasing efficiency in the prior art, the present invention provides a high-efficiency and environment-friendly steel strip degreasing agent, which is convenient to prepare, and is used in the continuous degreasing and cleaning process of steel strips, with excellent degreasing effect

Method used

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  • High-efficiency and environment-friendly steel strip degreasing agent and preparation and using method thereof
  • High-efficiency and environment-friendly steel strip degreasing agent and preparation and using method thereof
  • High-efficiency and environment-friendly steel strip degreasing agent and preparation and using method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] Preparation:

[0022] Mix 20 parts of potassium hydroxide and 10 parts of sodium carbonate, add 65 parts of water, stir at 40°C for 3 minutes, maintain the temperature and add 3.5 parts of EDTMPS, 5 parts of APG and 1 part of glycerin fatty acid ester to complete the solution.

[0023] Instructions:

[0024] Quantitative titration of the high-efficiency and environmental-friendly steel strip degreasing agent into the circulating fluid tank equipped with desalinated water, diluting it into an alkali solution with an alkali concentration of 2.8%, and quantitatively adding the high-efficiency and environmental protection steel strip degreasing agent to ensure that during the degreasing process The alkali concentration of the circulating liquid water tank remains unchanged, the steel strip passes through the circulating liquid water tank continuously, the temperature of the degreasing liquid is 50°C, and the passing speed of the steel strip is 320m / min.

Embodiment 2

[0026] Preparation:

[0027] Mix 25 parts of potassium hydroxide and 8.2 parts of sodium carbonate, add 61 parts of water, stir at 50°C for 3 minutes, maintain the temperature and add 4 parts of EDTMPS, 4 parts of APG and 0.4 parts of glycerin fatty acid ester to complete the solution.

[0028] Instructions:

[0029] Quantitative titration of the high-efficiency environmental protection steel belt degreasing agent into the circulating fluid water tank equipped with desalinated water, diluting it into an alkali solution with an alkali concentration of 2.5%, and quantitatively adding the high-efficiency environmental protection steel belt degreasing agent to ensure that during the degreasing process The alkali concentration of the circulating liquid water tank remains unchanged, the steel strip passes through the circulating liquid water tank continuously, the temperature of the degreasing liquid is 65°C, and the passing speed of the steel strip is 240m / min.

Embodiment 3

[0031] Preparation:

[0032] Mix 29 parts of potassium hydroxide and 4.8 parts of sodium carbonate, add 58 parts of water, stir at 60°C for 3 minutes, maintain the temperature and add 3 parts of EDTMPS, 3 parts of APG and 0.6 parts of glycerin fatty acid ester to complete the solution.

[0033] Instructions:

[0034] Quantitative titration of the high-efficiency and environmental-friendly steel belt degreasing agent into the circulating fluid tank equipped with desalinated water, diluting it into an alkali solution with an alkali concentration of 3.5%, and quantitatively adding the high-efficiency and environmental protection steel belt degreasing agent to ensure that during the degreasing process The alkali concentration of the circulating liquid water tank remains unchanged, the steel strip passes through the circulating liquid water tank continuously, the temperature of the degreasing liquid is 70°C, and the passing speed of the steel strip is 400m / min.

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Abstract

The invention relates to a high-efficiency and environment-friendly steel strip degreasing agent and a preparation method and a using method thereof. The high-efficiency and environment-friendly steelstrip degreasing agent is prepared by taking potassium hydroxide as a chemical degreasing agent, taking sodium carbonate as a degreasing aid, taking Ethylene Diamine Tetra (Methylene Phosphonic Acid)Sodium (EDTMPS) as a water quality stabilizer, taking alkyl glycoside (APG) as a complexing agent, taking Glycerol fatty acid fat as an emulsifier, and mixing the components with water according to acertain proportion. During the use, the high-efficiency and environment-friendly steel strip degreasing agent is quantitatively tiltrated into a circulating liquid water tank in which water is filledso as to be diluted into low-concentration alkali solution; through a quantitative supplementing manner, the alkali concentration of the circulating liquid water tank in the degreasing production process remains unchanged; steel strips continuously pass through the circulating liquid water tank; and through manners of spraying, washing and scrubbing, residual grease and iron powder on the surfaces of the steel strips are removed. Through the formula, the steel strip degreasing agent has the advantages of being high in degreasing efficiency, environment-friendly and good in stability.

Description

technical field [0001] The invention belongs to the technical field of metal surface chemical treatment, and mainly relates to a high-efficiency and environment-friendly degreasing agent for steel strips, a preparation method and a use method thereof. Background technique [0002] During the rolling process of the steel strip, palm oil or similar synthetic oil is usually used as a lubricant due to technological needs, but this lubricant will cover part of the residual iron powder and leave a residue on the surface of the steel strip. A layer of oil film. When this layer of oil film is annealed in the annealing furnace, carburization and residues will occur due to thermal decomposition, which will affect the composition and surface cleanliness of the steel strip, and then affect the quality of subsequent processing. Therefore, degreasing, cleaning, Drying and other processes remove the residues on the surface of the steel strip. The degreasing cleaning process usually adopts...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C23G1/19
CPCC23G1/19
Inventor 沈建新
Owner WUXI CITY XIDONG RUBBER & PLASTICS MACHINERY
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