CN104674251A - Degreasing agent for cold-rolled continuous annealing unit - Google Patents
Degreasing agent for cold-rolled continuous annealing unit Download PDFInfo
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- CN104674251A CN104674251A CN201510107576.2A CN201510107576A CN104674251A CN 104674251 A CN104674251 A CN 104674251A CN 201510107576 A CN201510107576 A CN 201510107576A CN 104674251 A CN104674251 A CN 104674251A
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- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23G—CLEANING OR DE-GREASING OF METALLIC MATERIAL BY CHEMICAL METHODS OTHER THAN ELECTROLYSIS
- C23G1/00—Cleaning or pickling metallic material with solutions or molten salts
- C23G1/14—Cleaning or pickling metallic material with solutions or molten salts with alkaline solutions
- C23G1/19—Iron or steel
Abstract
The invention discloses a degreasing agent for a cold-rolled continuous annealing unit. The degreasing agent is prepared from an alkaline matter, an auxiliary cleaning agent, a chelating agent, a surfactant and desalted water, wherein the alkaline matter is prepared from the following ingredients in percentage by weight: 12-36 percent of sodium hydroxide and 0-6 percent of potassium hydroxide; the auxiliary cleaning agent is prepared from the following ingredients in percentage by weight: 1-5 percent of sodium carbonate and 1-5 percent of trisodium phosphate; the chelating agent is prepared from the following ingredients in percentage by weight: 1-6 percent of sodium gluconate and 0.5-2 percent of ethylenediamine tetraacetic acid; the surfactant is prepared from the following ingredients in percentage by weight: 0.5-2 percent of polyacrylic acid sodium salt, 0.5-2 percent of nonylphenol polyoxyethylene ether and 0.5-2 percent of an H-11type anionic surfactant. The degreasing agent is good in cleaning performance and low in cost. According to the degreasing agent, the cleaning rate of the cleaned band steel can be more than 98 percent, the oil residue on surface is smaller than or equal to 10 mg/m<2>, and the residual quantity of iron is smaller than or equal to 10 mg/m<2>. The degreasing agent can well adapt to the requirement on the cleaning quality of boards during high-speed production of the cold-rolled continuous annealing unit.
Description
Technical field
The present invention relates to a kind of cold-rolling continuous annealing unit grease-removing agent, belong to corrosion and protection technical field.
Background technology
Cleaning section connects the important step of moving back pre-treatment.Cold rolled strip has to pass through surface cleaning processing technique before annealing, its Main Function removes the emulsion greasy dirt of cold rolling rear belt steel surface, iron powder, dust and other foreign material, keep metal base surface to be in good degree of cleaning, produce high-quality cold-rolled products for subsequent technique and lay a solid foundation.Therefore improving this operation oil removing cleansing power, reducing production cost is connect the problem of moving back and producing general concern.
In recent years along with the introduction of more advanced technology and equipment, new company of iron and steel enterprise moves back unit and is in succession constructed and put into operation, it is fast that cold-rolling continuous annealing unit has highlighted unit speed, and board surface quality is high, specification, feature various in style, and this just has higher requirement to plate face cleaning quality.
Cold-rolling continuous annealing unit grease-removing agent requires appearance transparent, and solution is without layering, without precipitation and floss, and the working fluid being diluted to 2 ~ 4% has excellent cleaning, surface tension, cleaning and rust-preventing characteristic.Composition should possess wettability and perviousness, can not only soak the grease of metallic surface, also will penetrate into the inside of grease, reduces the viscous force of grease; And can react with organic grease, it is absorbed from metallic surface, is dispersed in water; Also to prevent grease from again condensing, second adsorption metallic surface.The technique that existing cold-rolling continuous annealing unit grease-removing agent adopts high temperature cleaning showers, high-temperature electrolysis degreasing and high-temperature hot to wash, degreasing time is longer, can not meet the degreasing requirement connected when moving back unit cleaning section high-speed cruising completely, also may there is the situations such as breakdown of emulsion layering, precipitation in some grease-removing agent in addition in storage process.
Summary of the invention
The object of the present invention is to provide a kind of cold-rolling continuous annealing unit grease-removing agent of cleaning performance excellence, this cold-rolling continuous annealing unit grease-removing agent can be applicable to modernization cold-rolling continuous annealing production line cleaning section preferably.
For achieving the above object, the cold-rolling continuous annealing unit grease-removing agent designed by the present invention, is formed by alkaline matter, auxiliary cleaning agent, sequestrant, tensio-active agent and de-salted water assembly; Described alkaline matter is made up of sodium hydroxide, potassium hydroxide, and weight ratio is respectively 12 ~ 36% and 0 ~ 6%; Described auxiliary cleaning agent is made up of sodium carbonate, tertiary sodium phosphate, and weight ratio is respectively 1 ~ 5% and 1 ~ 5%; Described sequestrant is made up of Sunmorl N 60S, ethylenediamine tetraacetic acid (EDTA), and weight ratio is respectively 1 ~ 6% and 0.5 ~ 2%; Described tensio-active agent is made up of polyacrylic acid sodium salt, polyoxyethylene nonylphenol ether and H-11 type anion surfactant, and weight ratio is respectively 0.5 ~ 2%, 0.5 ~ 2%, 0.5 ~ 2%.
Further, in described alkaline matter, the weight ratio of sodium hydroxide, potassium hydroxide is respectively 18 ~ 25% and 1 ~ 3%; In described auxiliary cleaning agent, the weight ratio of sodium carbonate, tertiary sodium phosphate is respectively 2 ~ 4% and 2 ~ 4%; In described sequestrant, the weight ratio of Sunmorl N 60S, ethylenediamine tetraacetic acid (EDTA) is respectively 2 ~ 5% and 1 ~ 2%; In described tensio-active agent, the weight ratio of polyacrylic acid sodium salt, polyoxyethylene nonylphenol ether and H-11 type anion surfactant is respectively 1 ~ 2%, 1 ~ 2%, 1 ~ 2%.
The concrete compound method of cold-rolling continuous annealing unit grease-removing agent of the present invention is: be first dissolved in by auxiliary cleaning agent in a part of de-salted water and obtain inorganic salt solution, again alkaline matter is dissolved in another part de-salted water and obtains alkali lye, then inorganic salt solution has slowly been joined in churned mechanically normal temperature alkali lye and obtained homogeneous, the water white mixed solution of outward appearance, then slowly add sequestrant and tensio-active agent successively having in churned mechanically situation, obtain cold-rolling continuous annealing unit grease-removing agent product of the present invention.
The each compositional selecting of cold-rolling continuous annealing unit grease-removing agent of the present invention and Cleaning principle as follows:
Alkaline matter sodium hydroxide in formula, potassium hydroxide energy and the vegetable and animals oils generation saponification reaction sticked on steel plate, generate soap and glycerine, both can well be dissolved in clean-out system, thus the animal-plant oil on cold rolled strip is removed.For ensureing, with other components, there is good synergy, the content of each component in alkaline matter should be controlled preferably.
In composite grease-removing agent, often add multiple washing assistant or other additives, to improve the soil release performance of clean-out system, especially remove the ability of hard dirt.Cold-rolling continuous annealing grease-removing agent of the present invention is with sodium carbonate, tertiary sodium phosphate for auxiliary cleaning agent, and its Main Function is softening water hardness, provides alkaline buffer environment and wetting, emulsification, suspension, dispersion spot dirt, prevents the precipitation again of dirt from adhering to.Selected inorganic salt also have the ability of certain cleaning greasy dirt, can strengthen the deoiling effect of clean-out system.
Sequestrant Sunmorl N 60S in formula and ethylenediamine tetraacetic acid (EDTA), coordination compound can be formed with metal ions such as Fe, Ca, the Mg in scavenging solution, reduce the possibility that lipid acid that these metal ions and fat saponification formed is combined into metallic soap, thus avoid the formation of water-fast heavy metal soap and again adhere to band steel and cause cleaning efficiency to decline.
Polyacrylic acid sodium salt in formula, polyoxyethylene nonylphenol ether and H-11 type anion surfactant are when washing dirt, lipophilic group absorption dirt, hydrophilic radical is water-soluble, simultaneously due to the existence of these two kinds of groups, the surface tension of water significantly reduces, original immiscible oil and water are connected, makes lipophilic group become fine particle together with dirt companion hydrophilic radical and be scattered in water, reach the object of decontamination.The synergistic effect that surfactant compound produces shows as: give full play to its effect such as wetting, infiltration, emulsification, solubilising in cleaning process, satisfiedly to degrease, protection against corrosion, the requirement such as stability and anti-hard water.The efficiency of nonionogenic tenside is higher, and form micelle and be also easier to, and ionogenic surfactant produces electrostatic repulsion because hydrophilic radical ionizes in water, efficiency is often lower.Therefore, in nonionogenic tenside, add appropriate anion surfactant, will the activity of compound be improved and overcome some weakness when anion surfactant is used alone.In addition, the cloud point of non-ionic monomer solution can be eliminated or improve to anionic monomer effectively.To adapt to the needs that heated wash and high temperature are deposited, this class clean-out system without cloud point or cloud point high, can be used for cleaning of heating.
Cold-rolling continuous annealing unit grease-removing agent of the present invention is compared with other similar grease-removing agent product, owing to mutually working in coordination with between each component, requirement to plate face cleaning quality when can adapt to cold-rolling continuous annealing unit high-speed production, cleaning performance is excellent, cheap, band steel after adopting this grease-removing agent can make cleaning is cleaned rate and is reached more than 98%, Oil residue on surface≤10mg/m
2(one side), residual iron≤10mg/m
2(one side), the cleaning performance in employing during warm processing condition is satisfactory equally.In addition, after tested, there is not the situations such as breakdown of emulsion layering, precipitation in cold-rolling continuous annealing unit grease-removing agent of the present invention in storage process.
Embodiment
Below in conjunction with specific embodiment, the present invention will be further described.
Embodiment 1
Get sodium hydroxide 12%, potassium hydroxide 6%, sodium carbonate 2.4%, sodium phosphate 1.8%, Sunmorl N 60S 5%, ethylenediamine tetraacetic acid (EDTA) 1%, polyacrylic acid sodium salt 2%, polyoxyethylene nonylphenol ether 1%, H-11 promoting agent 1%, de-salted water 67.8% by weight.After being mixed by described mode by these raw materials, make concentrated solution.During use, the water of the concentrated solution of 3 weight parts and 97 weight parts is mixed to get the working fluid that massfraction is 3%, test by standard method JB/T 4323.2-19999, this working fluid cleansing power is 98.2%, cold-rolled steel sheet plate face reflectivity 87.5% after degreasing, surface of steel plate residue is less than 10mg/m
2.In storage process, there is not the situations such as breakdown of emulsion layering, precipitation by the cold-rolling continuous annealing unit grease-removing agent of this embodiment proportions.
Embodiment 2
Get sodium hydroxide 15%, potassium hydroxide 5%, sodium carbonate 3%, sodium phosphate 2%, Sunmorl N 60S 5%, ethylenediamine tetraacetic acid (EDTA) 1%, polyacrylic acid sodium salt 1%, polyoxyethylene nonylphenol ether 2%, H-11 promoting agent 1%, de-salted water 65% by weight.After being mixed by described mode by these raw materials, make concentrated solution.During use, the water of the concentrated solution of 3 weight parts and 97 weight parts is mixed to get the working fluid that massfraction is 3%, test by standard method JB/T 4323.2-19999, this working fluid cleansing power is 98.8%, cold-rolled steel sheet plate face reflectivity 89.2% after degreasing, surface of steel plate residue is less than 8mg/m
2.In storage process, there is not the situations such as breakdown of emulsion layering, precipitation by the cold-rolling continuous annealing unit grease-removing agent of this embodiment proportions.
Embodiment 3
Get sodium hydroxide 17%, potassium hydroxide 4%, sodium carbonate 3.2%, sodium phosphate 2.6%, Sunmorl N 60S 5%, ethylenediamine tetraacetic acid (EDTA) 1%, polyacrylic acid sodium salt 1%, polyoxyethylene nonylphenol ether 2%, H-11 promoting agent 1%, de-salted water 63.2% by weight.After being mixed by described mode by these raw materials, make concentrated solution.During use, the water of the concentrated solution of 3 weight parts and 97 weight parts is mixed to get the working fluid that massfraction is 3%, test by standard method JB/T 4323.2-19999, this working fluid cleansing power is 98.0%, cold-rolled steel sheet plate face reflectivity 90.7% after degreasing, surface of steel plate residue is less than 7mg/m
2.In storage process, there is not the situations such as breakdown of emulsion layering, precipitation by the cold-rolling continuous annealing unit grease-removing agent of this embodiment proportions.
Embodiment 4
Get sodium hydroxide 21%, sodium carbonate 3.4%, sodium phosphate 3.2%, Sunmorl N 60S 6%, ethylenediamine tetraacetic acid (EDTA) 2%, polyacrylic acid sodium salt 2%, polyoxyethylene nonylphenol ether 1%, H-11 promoting agent 1%, de-salted water 60.4% by weight.After being mixed by described mode by these raw materials, make concentrated solution.During use, the water of the concentrated solution of 3 weight parts and 97 weight parts is mixed to get the working fluid that massfraction is 3%, test by standard method JB/T 4323.2-19999, this working fluid cleansing power is 98.8%, cold-rolled steel sheet plate face reflectivity 90.3% after degreasing, surface of steel plate residue is less than 8mg/m
2.In storage process, there is not the situations such as breakdown of emulsion layering, precipitation by the cold-rolling continuous annealing unit grease-removing agent of this embodiment proportions.
Embodiment 5
Get sodium hydroxide 24%, sodium carbonate 4%, sodium phosphate 3.4%, Sunmorl N 60S 5%, ethylenediamine tetraacetic acid (EDTA) 1%, polyacrylic acid sodium salt 1%, polyoxyethylene nonylphenol ether 2%, H-11 promoting agent 1%, de-salted water 58.6% by weight.After being mixed by described mode by these raw materials, make concentrated solution.During use, the water of the concentrated solution of 3 weight parts and 97 weight parts is mixed to get the working fluid that massfraction is 3%, test by standard method JB/T 4323.2-19999, this working fluid cleansing power is 99.2%, cold-rolled steel sheet plate face reflectivity 92.1% after degreasing, surface of steel plate residue is less than 6mg/m
2.In storage process, there is not the situations such as breakdown of emulsion layering, precipitation by the cold-rolling continuous annealing unit grease-removing agent of this embodiment proportions.
Claims (2)
1. a cold-rolling continuous annealing unit grease-removing agent, is formed by alkaline matter, auxiliary cleaning agent, sequestrant, tensio-active agent and de-salted water assembly; It is characterized in that:
Described alkaline matter is made up of sodium hydroxide, potassium hydroxide, and weight ratio is respectively 12 ~ 36% and 0 ~ 6%; Described auxiliary cleaning agent is made up of sodium carbonate, tertiary sodium phosphate, and weight ratio is respectively 1 ~ 5% and 1 ~ 5%; Described sequestrant is made up of Sunmorl N 60S, ethylenediamine tetraacetic acid (EDTA), and weight ratio is respectively 1 ~ 6% and 0.5 ~ 2%; Described tensio-active agent is made up of polyacrylic acid sodium salt, polyoxyethylene nonylphenol ether and H-11 type anion surfactant, and weight ratio is respectively 0.5 ~ 2%, 0.5 ~ 2%, 0.5 ~ 2%.
2. cold-rolling continuous annealing unit grease-removing agent according to claim 1, is characterized in that:
In described alkaline matter, the weight ratio of sodium hydroxide, potassium hydroxide is respectively 18 ~ 25% and 1 ~ 3%; In described auxiliary cleaning agent, the weight ratio of sodium carbonate, tertiary sodium phosphate is respectively 2 ~ 4% and 2 ~ 4%; In described sequestrant, the weight ratio of Sunmorl N 60S, ethylenediamine tetraacetic acid (EDTA) is respectively 2 ~ 5% and 1 ~ 2%; In described tensio-active agent, the weight ratio of polyacrylic acid sodium salt, polyoxyethylene nonylphenol ether and H-11 type anion surfactant is respectively 1 ~ 2%, 1 ~ 2%, 1 ~ 2%.
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| CN201510107576.2A CN104674251A (en) | 2015-03-12 | 2015-03-12 | Degreasing agent for cold-rolled continuous annealing unit |
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Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104962938A (en) * | 2015-07-23 | 2015-10-07 | 马鞍山市鸿翮实业有限公司 | Concentrated liquid degreasing agent for silicon steel continuous annealing production line and preparation method thereof |
| CN105220166A (en) * | 2015-09-28 | 2016-01-06 | 武汉钢铁(集团)公司 | A kind of painting dressing automobiles Environment-friendlydegreasant degreasant and using method thereof |
| CN106757086A (en) * | 2016-11-10 | 2017-05-31 | 武汉钢铁股份有限公司 | For the alkaline defatting agent and its low-cost manufacture method of the cleaning of cold-rolling continuous annealing unit |
| CN106835167A (en) * | 2017-03-16 | 2017-06-13 | 冯志海 | A kind of special degreasing agent of without phosphorus strip and preparation method thereof |
| CN107868977A (en) * | 2016-09-26 | 2018-04-03 | 宝山钢铁股份有限公司 | A kind of cleaning agent for chromium plating substrate surface |
| CN108034952A (en) * | 2017-12-11 | 2018-05-15 | 武汉钢铁有限公司 | Painting dressing automobiles table tune pre-treatment high temperature degreasing agent and its degreasing method |
| CN108914044A (en) * | 2018-07-23 | 2018-11-30 | 安徽宏翔农业机械有限公司 | A kind of anti-corrosive treatment method of agricultural machinery metalwork |
| CN110629236A (en) * | 2019-10-30 | 2019-12-31 | 湖南金裕环保科技有限公司 | High-temperature degreasing agent and preparation method thereof |
| CN111781133A (en) * | 2019-04-04 | 2020-10-16 | 上海梅山钢铁股份有限公司 | Method for detecting anti-corrosion performance of wet leveling liquid for cold-rolled continuous annealed steel plate |
| CN112553635A (en) * | 2020-11-23 | 2021-03-26 | 武汉迪赛新材料有限公司 | Environment-friendly foamless liquid degreasing agent for cleaning before cold rolling continuous annealing |
| CN112845413A (en) * | 2019-11-26 | 2021-05-28 | 东莞新科技术研究开发有限公司 | Steel pipe cleaning method |
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Cited By (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104962938B (en) * | 2015-07-23 | 2018-04-20 | 马鞍山市鸿翮实业有限公司 | A kind of concentrated liquid degreasing agent for silicon steel continuous annealing production line and preparation method thereof |
| CN104962938A (en) * | 2015-07-23 | 2015-10-07 | 马鞍山市鸿翮实业有限公司 | Concentrated liquid degreasing agent for silicon steel continuous annealing production line and preparation method thereof |
| CN105220166A (en) * | 2015-09-28 | 2016-01-06 | 武汉钢铁(集团)公司 | A kind of painting dressing automobiles Environment-friendlydegreasant degreasant and using method thereof |
| CN107868977B (en) * | 2016-09-26 | 2019-10-25 | 宝山钢铁股份有限公司 | A kind of cleaning agent for chromium plating substrate surface |
| CN107868977A (en) * | 2016-09-26 | 2018-04-03 | 宝山钢铁股份有限公司 | A kind of cleaning agent for chromium plating substrate surface |
| CN106757086A (en) * | 2016-11-10 | 2017-05-31 | 武汉钢铁股份有限公司 | For the alkaline defatting agent and its low-cost manufacture method of the cleaning of cold-rolling continuous annealing unit |
| CN106835167A (en) * | 2017-03-16 | 2017-06-13 | 冯志海 | A kind of special degreasing agent of without phosphorus strip and preparation method thereof |
| CN108034952A (en) * | 2017-12-11 | 2018-05-15 | 武汉钢铁有限公司 | Painting dressing automobiles table tune pre-treatment high temperature degreasing agent and its degreasing method |
| CN108034952B (en) * | 2017-12-11 | 2019-11-08 | 武汉钢铁有限公司 | Painting dressing automobiles table tune pre-treatment high temperature degreasing agent and its degreasing method |
| CN108914044A (en) * | 2018-07-23 | 2018-11-30 | 安徽宏翔农业机械有限公司 | A kind of anti-corrosive treatment method of agricultural machinery metalwork |
| CN108914044B (en) * | 2018-07-23 | 2020-10-27 | 安徽宏翔农业机械有限公司 | Anti-corrosion treatment method for agricultural machine metal part |
| CN111781133A (en) * | 2019-04-04 | 2020-10-16 | 上海梅山钢铁股份有限公司 | Method for detecting anti-corrosion performance of wet leveling liquid for cold-rolled continuous annealed steel plate |
| CN110629236A (en) * | 2019-10-30 | 2019-12-31 | 湖南金裕环保科技有限公司 | High-temperature degreasing agent and preparation method thereof |
| CN112845413A (en) * | 2019-11-26 | 2021-05-28 | 东莞新科技术研究开发有限公司 | Steel pipe cleaning method |
| CN112553635A (en) * | 2020-11-23 | 2021-03-26 | 武汉迪赛新材料有限公司 | Environment-friendly foamless liquid degreasing agent for cleaning before cold rolling continuous annealing |
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