CN106191947A - Before being suitable for steel band plating, quickly defat activates two-in-one inorganic agent collocation method - Google Patents
Before being suitable for steel band plating, quickly defat activates two-in-one inorganic agent collocation method Download PDFInfo
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- CN106191947A CN106191947A CN201610700449.8A CN201610700449A CN106191947A CN 106191947 A CN106191947 A CN 106191947A CN 201610700449 A CN201610700449 A CN 201610700449A CN 106191947 A CN106191947 A CN 106191947A
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- China
- Prior art keywords
- defat
- steel band
- grams per
- per liter
- inorganic agent
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- C—CHEMISTRY; METALLURGY
- C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
- C25D—PROCESSES FOR THE ELECTROLYTIC OR ELECTROPHORETIC PRODUCTION OF COATINGS; ELECTROFORMING; APPARATUS THEREFOR
- C25D5/00—Electroplating characterised by the process; Pretreatment or after-treatment of workpieces
- C25D5/34—Pretreatment of metallic surfaces to be electroplated
- C25D5/36—Pretreatment of metallic surfaces to be electroplated of iron or steel
-
- C—CHEMISTRY; METALLURGY
- C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
- C25F—PROCESSES FOR THE ELECTROLYTIC REMOVAL OF MATERIALS FROM OBJECTS; APPARATUS THEREFOR
- C25F1/00—Electrolytic cleaning, degreasing, pickling or descaling
- C25F1/02—Pickling; Descaling
- C25F1/04—Pickling; Descaling in solution
- C25F1/06—Iron or steel
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Cleaning And De-Greasing Of Metallic Materials By Chemical Methods (AREA)
Abstract
The present invention relates to quick defat before one is suitable for steel band plating and activate two-in-one inorganic agent, containing: sulphuric acid 20 40 grams per liter, hydrochloric acid 10 40 grams per liter, combined additive 0.1 5 grams per liter, wherein combined additive is sodium ethylene diamine tetracetate 20 25%, nonionic surfactant 30 35%, low-carbon alcohols 20 25%, cetyl pyridinium 20 25%.Provide and a kind of be conducive to improving defat, the inorganic agent of acid-wash activation efficiency and collocation method, and shortening processes the time, save before the steel band plating of operation quickly defat activating treatment method.
Description
Technical field
The present invention relates to cleaning metal surface process, before belonging to a kind of steel band plating, quickly defat activates two-in-one process
Agent, collocation method and defat activating treatment method thereof.
Background technology
For strengthening the bond strength between coating and steel band, will be through defat, activation processing before steel band plating, it is therefore an objective to go
Fall the greasy dirt of steel strip surface, oxide skin, expose base activated surface, improve base activated and improve affine to coating of matrix
Property.
The defat process of deoiling includes the superficial phenomenon of complexity, and it is mainly by the removal of liquid greasy dirt, and auxiliary is with machinery
Power makes it be suspended in medium and remove.Surfactant, can be as defat owing to having hydrophilic group and hydrophobic group in its molecule
The main component of agent, in liquid greasy dirt removal process, surfactant by crispaturaing, emulsifying, solubilising, the effect such as Formation of liquid crystals
Play effect.
The surfactant added in degreasing agent should be soluble in water, it is simple to cleans, can quickly remove the dirt of metal surface,
In cleaning process, dirt not reprecipitation, and damage corrosion-free to metal, metal surface cleaning after cleaning.Live in used surface
Property agent be all compound at the correct ratio after, there is mutual repulsive interaction between the molecule of surfactant or attract each other
Effect, thus produce potentiation, its deoiling effect can be better than the deoiling effect of single surfactant, passes through synergism
Improve the effectiveness of surfactant.Sodium phosphate joins in degreasing agent, and it has dissolving oils and fats, the ability of demineralized water.Right
Surface smut has certain moistening, emulsifying, dispersion removal effect, it may be possible to improve the effectiveness of degreasing agent.
During defat is deoiled, cleaning can be interfered with because producing a large amount of bubble during mechanical force auxiliary stirring or air-blowing
Process, the flushing that additionally too much foam can make greasy dirt is more difficult, slows down separation and the precipitation of dirt.Therefore oil removing effect is being ensured
On the premise of Guo, reduce the generation of foam as far as possible.The method reducing bubble content of degreasing agent mainly has in degreasing agent at present
Add defoamer, but in oil removal process, can be along with the carrying out of oil removal process, the ability of froth breaking can reduce.The present invention passes through
The screening of Surfactant and compounded technology, reach low bubble requirement by reducing the content of surfactant.
By associating between this body structure of surfactant, physicochemical property and oil removing, utilize the association of surfactant
With and potentiation, several surfactants are carried out compounding proportioning, it is thus achieved that the surfactant of required effect, be improve de-
The main direction of studying of the ability of fat agent removing oil grease removal.
Steel band activation processing is usually to be put into containing in the acid solution such as sulphuric acid, hydrochloric acid by steel band, by acid to steel band table
The chemical reaction of surface oxidized skin etc. and remove oxide skin and reach the purpose of activated matrix.
The defat of traditional handicraft steel band, pickling are carried out separately, and general degreasing agent uses alkaline solution and is aided with surface
The adding ingredient such as activating agent, emulsifying agent, such technique process is more, to wash through multiple tracks after defat, pickling, money of wasting water
Source.
Summary of the invention
For the above-mentioned deficiency of prior art, the invention provides and a kind of be conducive to improving defat, acid-wash activation efficiency
Inorganic agent and collocation method, and shortening process time, save quick defat activating treatment method before the steel band plating of operation.
The technical scheme is that one is suitable for the front quickly defat of steel band plating and activates two-in-one inorganic agent, it is special
Levy and be: contain: sulphuric acid 20-40 grams per liter, hydrochloric acid 10-40 grams per liter, combined additive 0.1-5 grams per liter, wherein combined additive is
Sodium ethylene diamine tetracetate 20-25%, nonionic surfactant 30-35%, low-carbon alcohols 20-25%, cetyl pyridinium 20-25%.
Further, the one during nonionic surfactant is MOA-5, L-35, SPAN-80, NOS, OP-10, TX-10
Or it is multiple.
Further, one or more during low-carbon alcohols is methanol, dehydrated alcohol, isopropanol mixed alcohol.
Before being suitable for steel band plating, quickly defat activates two-in-one inorganic agent collocation method: be sequentially added in water sulphuric acid,
Hydrochloric acid, ethanedioic acid tetraacethyl sodium, be the most slowly warmed up to 30 DEG C, is incubated 30 minutes so that it is fully dissolve；Add low-carbon alcohols,
It is made fully to dissolve；Add nonionic surfactant, stir；Add cetyl pyridinium, stir
?.
Quick defat activating treatment method before being suitable for steel band plating, is characterized in that: is placed in by steel band and is suitable for steel band electricity
Before plating, quickly defat carries out periodical reversal current in activating two-in-one inorganic agent, and the commutation cycle is 30 minutes/time, and electric current density is
0.9-10A/2, temperature is 10-50 DEG C, and the process time is 1-5min.
Described nonionic surfactant is that SPAN-80, MOA-5, L-35, TX-10, OP-10 are according to 1:1:1:4:3 ratio
Join and take gained.
Nonionic surfactant of the present invention is that SPAN-80, MOA-5, L-35, TX-10, OP-10 are according to 1:1:1:4:3 ratio
Example is joined and is taken gained, and the mixed surfactant obtained under this ratio has preferable synergism, have preferable oil removing ability and
Dispersibility, foam is few, can obtain preferable oil removal rate at a lower temperature.MOA-5 good water solubility, hydrolysis ability is strong,
Have a preferable moistening, emulsifying and surely steep ability, and toxicity low irritant is little, be compare environmental protection a kind of surfactant.
Low-carbon (LC) alcohols material has froth breaking effect, it is possible to reduce in galvanization, the bubble near anode and cathode produces in a large number, and it is also simultaneously
Do not reduce the surface activity of surfactant.Cetyl pyridinium has enhanced shine in acid medium, and steel band can be made to obtain
Obtain glossy surface, improve its activity function.
Steel band is passed through the unidirectional current of periodic reverse, improves defat activation efficiency.
The present invention is to use acid solution to carry out defat, and in skimming processes, treatment fluid also activates work to steel strip surface
With, take periodical reversal current that steel band is processed simultaneously, accelerate defat, acid-wash activation efficiency, shorten the process time, save
Operation.
The present invention is by adding the surfactant prepared in proportion, and the defat activating treatment agent obtained can be at cryogenic conditions
Descending efficient, to rapidly remove steel surface greasy dirt and oxide, existing degreasing has again activation, it is achieved that defat activates
One step completes.The method is applicable to the pre-treatment defat of steel band plating, activation processing.The present invention can be under the conditions of 10-50 DEG C
Carrying out, in 5min, oil removal rate is up to 96%.This technique has defat, activates a step and complete, and technique is simple, low cost, pollution are little
Feature.
Detailed description of the invention
Embodiment 1
Sulphuric acid 20 grams per liter, hydrochloric acid 10 grams per liter, combined additive 0.1 grams per liter, combined additive ratio is: ethylenediaminetetraacetic acid
Sodium 25%, nonionic surfactant 30%, low-carbon alcohols 25%, cetyl pyridinium 20%, be placed in the aqueous solution of inorganic agent by steel band
In carry out periodical reversal current process, the commutation cycle is 30 minutes/time, and electric current density is 0.9A/dm2, temperature is 10 DEG C, processes
Time time is 1 minute.Gained steel strip surface is the brightest, and defat steel band is carried out oil removing test, can calculate the rate of deoiling and reach
94%.
Embodiment 2
Sulphuric acid 20 grams per liter；Hydrochloric acid 30 grams per liter；Combined additive 0.1 grams per liter, combined additive ratio is: ethylenediaminetetraacetic acid
Sodium 20%, nonionic surfactant 30%, low-carbon alcohols 25%, cetyl pyridinium 25%, be placed in the aqueous solution of inorganic agent by steel band
In carry out periodical reversal current process, the commutation cycle is 30 minutes/time, electric current density is 2A/dm2, temperature is 20 DEG C, processes
Time time is 1 minute.Gained steel strip surface light, carries out oil removing test to defat steel band, can calculate the rate of deoiling and reach
95%.
Embodiment 3
Sulphuric acid 40 grams per liter；Hydrochloric acid 10 grams per liter；Combined additive 5 grams per liter, combined additive ratio is: sodium ethylene diamine tetracetate
25%, nonionic surfactant 30%, low-carbon alcohols 20%, cetyl pyridinium 25%, be placed in steel band in the aqueous solution of inorganic agent
Carrying out periodical reversal current process, the commutation cycle is 30 minutes/time, and electric current density is 10A/dm2, temperature is 30 DEG C, during process
Between the time be 0.5 minute.Gained steel strip surface light, carries out oil removing test to defat steel band, can calculate the rate of deoiling and reach
96%.
Embodiment 4
Sulphuric acid 40 grams per liter；Hydrochloric acid 10 grams per liter；Combined additive 0.1 grams per liter, combined additive ratio is: ethylenediaminetetraacetic acid
Sodium 20%, nonionic surfactant 35%, low-carbon alcohols 20%, cetyl pyridinium 25%, be placed in the aqueous solution of inorganic agent by steel band
In carry out periodical reversal current process, the commutation cycle is 30 minutes/time, and electric current density is 2A/dm2, temperature is 20 DEG C, during process
Between the time be 1 minute.Gained steel strip surface light, carries out oil removing test to defat steel band, can calculate the rate of deoiling and reach 96%.
Embodiment 5
Sulphuric acid 40 grams per liter；Hydrochloric acid 40 grams per liter；Combined additive 5 grams per liter, combined additive ratio is: sodium ethylene diamine tetracetate
20%, nonionic surfactant 35%, low-carbon alcohols 20%, cetyl pyridinium 25%, be placed in steel band in the aqueous solution of inorganic agent
Carrying out periodical reversal current process, the commutation cycle is 30 minutes/time, and electric current density is 2A/dm2, temperature is 50 DEG C, processes the time
Time is 5 minutes.Gained steel strip surface light, carries out oil removing test to defat steel band, can calculate the rate of deoiling and reach 98%.
Wherein nonionic surfactant optimum proportioning is: SPAN-80, MOA-5, L-35, TX-10, OP-10 are according to 1:1:
1:4:3 ratio is joined and is taken gained.
The present invention is steel band acid water base defat, the two-in-one inorganic agent of activator, and technique is simple, operation is few, to steel in process
Ferrum series products not damaged, it is adaptable to the defat before the plating of various steel bands, activation processing.
Have been described with the present invention, but be not limited to above-described embodiment.
Claims (2)
1. before being suitable for steel band plating, quickly defat activates a two-in-one inorganic agent collocation method, it is characterized in that: inorganic agent contains
Have: sulphuric acid 20-40 grams per liter, hydrochloric acid 10-40 grams per liter, combined additive 0.1-5 grams per liter, wherein combined additive is ethylenediamine
Tetraacethyl sodium 20-25%, nonionic surfactant 30-35%, low-carbon alcohols 20-25%, cetyl pyridinium 20-25%;Nonionic
Surfactant is one or more in SPAN-80, MOA-5, L-35, TX-10, OP-10;Low-carbon alcohols is methanol, anhydrous second
One or more in alcohol, isopropanol mixed alcohol;Xiang Shuizhong is sequentially added into sulphuric acid, hydrochloric acid, ethanedioic acid tetraacethyl sodium, the most slowly
It is warmed up to 30 DEG C, is incubated 30 minutes so that it is fully dissolve；Add low-carbon alcohols so that it is fully dissolve；Add non-ionic surface
Activating agent, stirs；Add cetyl pyridinium, stir.
The steel band that is suitable for the most according to claim 1 electroplates the front quickly defat two-in-one inorganic agent collocation method of activation, its
Feature is: described nonionic surfactant is that SPAN-80, MOA-5, L-35, TX-10, OP-10 are according to 1:1:1:4:3 ratio
Join and take gained.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510865006 | 2015-12-01 | ||
| CN201510865006X | 2015-12-01 |
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| Publication Number | Publication Date |
|---|---|
| CN106191947A true CN106191947A (en) | 2016-12-07 |
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| CN1108703A (en) * | 1994-08-24 | 1995-09-20 | 山东省冶金科学研究院 | Pickle for stainless-steel and carbon-steel compound plate and pickling technology thereof |
| CN1654712A (en) * | 2005-03-04 | 2005-08-17 | 河北工业大学 | Compound cleaning method for hot dip steel member |
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| WO2007056992A1 (en) * | 2005-11-21 | 2007-05-24 | Eric Blauenstein | Method and agent for the electrolytic cleaning and descaling of a metallic workpiece |
| CN101463302A (en) * | 2009-01-13 | 2009-06-24 | 南京科润工业介质有限公司 | Aqueous degreasing agent for stainless steel tube |
| CN102418102A (en) * | 2011-12-08 | 2012-04-18 | 上海太阳能电池研究与发展中心 | Surface cleaning agent and cleaning method for stainless steel substrate of thin film solar cell |
| CN103103541A (en) * | 2013-01-24 | 2013-05-15 | 宝山钢铁股份有限公司 | Silicon steel acid cleaning stabilizing material and application method thereof |
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| CN1860256A (en) * | 2003-09-30 | 2006-11-08 | 巴斯福股份公司 | Method for pickling metallic surfaces by using alkoxylated alkynols |
| CN1654712A (en) * | 2005-03-04 | 2005-08-17 | 河北工业大学 | Compound cleaning method for hot dip steel member |
| WO2007056992A1 (en) * | 2005-11-21 | 2007-05-24 | Eric Blauenstein | Method and agent for the electrolytic cleaning and descaling of a metallic workpiece |
| CN101463302A (en) * | 2009-01-13 | 2009-06-24 | 南京科润工业介质有限公司 | Aqueous degreasing agent for stainless steel tube |
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| CN103103541A (en) * | 2013-01-24 | 2013-05-15 | 宝山钢铁股份有限公司 | Silicon steel acid cleaning stabilizing material and application method thereof |
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Application publication date: 20161207 |