CN111334846A - Copper alloy electrolytic powder and preparation method thereof - Google Patents
Copper alloy electrolytic powder and preparation method thereof Download PDFInfo
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- CN111334846A CN111334846A CN201911372947.4A CN201911372947A CN111334846A CN 111334846 A CN111334846 A CN 111334846A CN 201911372947 A CN201911372947 A CN 201911372947A CN 111334846 A CN111334846 A CN 111334846A
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- 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
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- Electrochemistry (AREA)
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- Detergent Compositions (AREA)
- Cleaning And De-Greasing Of Metallic Materials By Chemical Methods (AREA)
Abstract
The invention relates to the technical field of electrolytic degreasing, in particular to copper alloy electrolytic powder and a preparation method thereof, wherein the electrolytic powder comprises the following components in parts by weight: 5-25 parts of soda ash, 20-60 parts of soda ash, 10-40 parts of sodium metasilicate pentahydrate, 5-20 parts of sodium citrate, 1-10 parts of sodium gluconate, 0.5-5 parts of disodium EDTA (ethylene diamine tetraacetic acid), 0.1-1 part of sodium dodecyl sulfate, 0.5-5 parts of nonylphenol polyoxyethylene ether TX-10, 0.5-5 parts of peregal O-25 and 1-5 parts of lactose; has excellent emulsifying dispersivity, avoids the reattachment of oil stains and has good cleaning capability.
Description
Technical Field
The invention relates to the technical field of electrolytic degreasing, in particular to copper alloy electrolytic powder and a preparation method thereof.
Background
During the manufacturing, transportation, storage and use of the metal workpiece, the surface of the metal workpiece is coated with grease due to the requirements of machining, rust prevention and the like. These fats and oils are based on mineral fats and oils and vegetable fats, and are added with various organic or inorganic additive components. Therefore, in the surface treatment of metal materials, degreasing is an important process, the degreasing degree of the metal surface directly influences the subsequent treatment quality of a workpiece, electrolytic degreasing is a method for removing grease and other dirt by adopting the workpiece as a cathode or an anode and electrolyzing in an alkaline cleaning solution, a copper alloy can be used as the cathode and the anode during electrolytic degreasing, a large amount of gas generated by electrolysis can remove grease and other dirt from the surface, and the alkaline electrolyte during electrolysis is very important for the electrolytic effect.
Disclosure of Invention
The invention provides copper alloy electrolytic powder and a preparation method thereof for removing grease on the surface of a copper alloy through electrolysis, and the copper alloy electrolytic powder has the characteristics of strong electrolytic detergency, short electrolysis time, good conductivity, high electrolysis efficiency and long service life, and is suitable for copper alloy parts with high corrosion resistance.
In order to solve the technical problems, the technical scheme of the invention is as follows: the copper alloy electrolytic powder comprises the following components in parts by weight: 5-25 parts of soda beads, 20-60 parts of soda ash, 10-40 parts of sodium metasilicate pentahydrate, 5-20 parts of sodium citrate, 1-10 parts of sodium gluconate, 0.5-5 parts of disodium EDTA (ethylene diamine tetraacetic acid), 0.1-1 part of sodium dodecyl sulfate, 0.5-5 parts of nonylphenol polyoxyethylene ether TX-10, 0.5-5 parts of peregal O-25 and 1-5 parts of lactose.
Further, the electrolytic powder comprises the following components in parts by weight: 10-20 parts of soda beads, 30-50 parts of soda ash, 20-30 parts of sodium metasilicate pentahydrate, 5-10 parts of sodium citrate, 3-8 parts of sodium gluconate, 1-2 parts of disodium EDTA (ethylene diamine tetraacetic acid), 0.3-0.8 part of sodium dodecyl sulfate, 0.8-2 parts of nonylphenol polyoxyethylene ether TX-10, 1-2 parts of peregal O-25 and 2-4 parts of lactose.
Further, the electrolytic powder comprises the following components in parts by weight: 15 parts of soda bead, 40 parts of soda ash, 24.5 parts of sodium metasilicate pentahydrate, 8 parts of sodium citrate, 5 parts of sodium gluconate, 1.5 parts of disodium EDTA, 0.5 part of sodium dodecyl sulfate, 1 part of nonylphenol polyoxyethylene ether TX-10, 1.5 parts of peregal O-25 and 3 parts of lactose.
A preparation method of copper alloy electrolytic powder comprises the following steps:
the method comprises the following steps: adding soda ash, sodium metasilicate pentahydrate, sodium citrate, sodium gluconate, disodium EDTA, sodium dodecyl sulfate and lactose into a stirrer, and uniformly stirring;
step two: adding nonylphenol polyoxyethylene ether TX-10 into the stirrer, and uniformly stirring;
step three: heating the peregal O-25 to a transparent state, adding the peregal O-25 into the stirrer, and uniformly stirring;
step four: and finally, uniformly stirring the pearl soda in the stirrer.
Further, in the first step and the fourth step, the temperature of the stirrer is controlled to be 25-80 ℃.
Compared with the prior art, the invention has the beneficial effects that:
the sodium metasilicate pentahydrate has the capabilities of descaling, emulsifying, dispersing, wetting, permeating and pH value buffering;
disodium EDTA is an organic carboxylate, and has chelation and dispersion effects on metal ions and buffering effects on alkali, and can be used as a washing assistant to inhibit Ca ions, Mg ions and other metal ions from forming precipitates, eliminate agglomeration of water insoluble substances, change the water insoluble substances into a suspension body and disperse the suspension body into a solution, and play a role in softening water;
sodium gluconate and sodium citrate are also used as washing aids for softening hard water, wherein the sodium gluconate has a carboxyl and 5 hydroxyls, can chelate metal ions or metal oxides under the alkaline condition, and is an ideal cleaning aid;
sodium metasilicate pentahydrate and nonylphenol polyoxyethylene ether TX-10 are used as surfactants, and have good functions of cleaning, emulsifying and dispersing;
lactose and sodium dodecyl sulfate have emulsification effect;
the electrolytic powder prepared by the invention has the characteristics of strong electrolytic detergency, short electrolytic time, good conductivity and high electrolytic efficiency, and is suitable for copper alloy parts with high corrosion resistance.
Detailed Description
The technical solution of the present invention will be described in detail with reference to the following examples. The following examples are only for illustrating the technical solutions of the present invention more clearly, and therefore are only examples, and the protection scope of the present invention is not limited thereby.
Examples 1-5 the respective components were used in the amounts shown in table 1, and copper alloy electrolytic powders were prepared in the amounts shown in table 1 and according to the following preparation methods:
table 1: examples 1 to 5 Each component ratio (parts by mass)
The preparation method comprises the following steps:
the method comprises the following steps: weighing sodium carbonate, sodium metasilicate pentahydrate, sodium citrate, sodium gluconate, disodium EDTA, sodium dodecyl sulfate and lactose according to the formula ratio, adding into a stirrer, and stirring for 5min at the speed of 50 r/min;
step two: weighing nonylphenol polyoxyethylene ether TX-10 with the formula ratio, adding into the stirrer, and stirring for 5 min;
step three: weighing peregal O-25 with the formula ratio, heating to a transparent state, and adding into the stirrer to stir for 5 min;
step four: weighing the pearl alkali with the formula ratio, adding the pearl alkali into the stirrer, and stirring for 3 min.
Comparative example 1:
alkali bead is used as electrolytic degreasing powder.
The hot steel degreasing powders prepared in the examples 1 to 5 were subjected to cleaning experiments according to the following steps:
s1, preparing a steel test piece, namely adopting No. 45 steel with the size of 50mm × 25mm × 5mm as the test piece.
S2: preparation of a test solution: preparing the hot degreased powder of the steel prepared in the examples 1 to 5 and the soda beads prepared in the comparative example 1 into a 5% aqueous solution by using deionized water;
s3: preparing the artificial oil stain according to the following mass ratio formula:
the formula is as follows: 8% of barium petroleum sulfonate, 3.5% of lanolin magnesium soap, 2% of lanolin, 30% of industrial vaseline, 34.5% of No. 20 machine oil, 12% of No. 30 machine oil, 2% of calcium-based lubricating grease and 8% of aluminum oxide;
the preparation method comprises the following steps: weighing industrial vaseline, No. 20 mechanical oil and No. 30 mechanical oil according to the formula amount, mixing, heating to about 120 ℃ for uniform melting, pouring barium petroleum sulfonate, lanolin magnesium soap, lanolin and calcium-based lubricating grease according to the formula amount, and stirring for melting. Controlling the temperature not to exceed 130 ℃, stopping heating after the aluminum oxide powder is completely dissolved, uniformly stirring, cooling to room temperature, and storing in a refrigerator at the temperature of 5-10 ℃ for later use.
S4: and (2) placing the prepared stainless steel test piece in the step S1 in a drying oven at 40 +/-2 ℃ for drying for 30min, transferring the test piece into a dryer for cooling, weighing to 0.1mg, horizontally placing the weighed test piece on dried filter paper, uniformly coating artificial oil stains to the lower 2/3 part of one side of the test piece by using a knife, not coating the other surfaces, wiping off the excessive oil stains on the two sides and the bottom edge of the test piece by using the filter paper, controlling the coating amount of the oil stains to be between 0.08g and 0.20g, placing the coated test piece into a constant-temperature drying oven at 40 +/-2 ℃ for drying for 30min, taking out the test piece after wiping off the oil stains on the bottom edge, cooling in the dryer, and weighing to 0.1 mg.
S5: pouring 400ml of test solution into a 500ml beaker, carrying out electrolytic degreasing at (70 +/-2) DEG C for 100 seconds under the voltage of 5V, taking out the test solution from (40 +/-2) DEG C after the electrolytic degreasing is finished, drying the test solution for 2 hours, taking out the test solution, weighing the test solution to 0.1mg, calculating the cleaning power according to the following formula, and comparing the cleaning power with the results shown in Table 2.
Wherein m0 is the mass of the test piece, m1 is the mass of the oil stain coated test piece before electrolytic degreasing, and m2 is the mass of the oil stain coated test piece after electrolytic degreasing, and the unit is gram (g).
Table 2: examples 1-5 detergency and comparative example 1 detergency comparison
| Group of | Example 1 | Example 2 | Example 3 | Example 4 | Example 5 | Comparative example 1 |
| m0(g) | 48.73 | 49.08 | 49.11 | 49.15 | 48.81 | 49.2 |
| m1(g) | 48.88 | 49.25 | 49.29 | 49.27 | 48.92 | 49.36 |
| m2(g) | 48.74 | 49.09 | 49.12 | 49.16 | 48.82 | 49.22 |
| Detergency (%) | 93.33％ | 94.12％ | 94.44％ | 91.67％ | 90.91％ | 87.50％ |
As can be seen from the data in the table, compared with the electrolytic degreasing with single bead alkali as the electrolyte, the invention has the characteristic of strong cleaning ability.
The main technical indexes of the copper alloy electrolytic powder prepared by the method are as follows:
pH (5% aqueous g/L): 13.3-13.5
The steel hot degreasing powder prepared by the method has the following main construction parameters:
1. concentration of bath solution (g/L): 50-80
2. Treatment temperature (. degree. C.): 60-80
3. An electrolytic degreasing mode: cathodic electrolysis or anodic electrode
Claims (5)
1. A copper alloy electrolytic powder is characterized in that: the electrolytic powder comprises the following components in parts by weight: 5-25 parts of soda, 20-60 parts of soda ash, 10-40 parts of sodium metasilicate pentahydrate, 5-20 parts of sodium citrate, 1-10 parts of sodium gluconate, 0.5-5 parts of disodium EDTA, 0.1-1 part of sodium dodecyl sulfate, 0.5-5 parts of nonylphenol polyoxyethylene ether TX-10, 0.5-5 parts of peregal O-25 and 1-5 parts of lactose.
2. The copper alloy electrolytic powder according to claim 1, characterized in that: the electrolytic powder comprises the following components in parts by weight: 10-20 parts of soda beads, 30-50 parts of soda ash, 20-30 parts of sodium metasilicate pentahydrate, 5-10 parts of sodium citrate, 3-8 parts of sodium gluconate, 1-2 parts of disodium EDTA (ethylene diamine tetraacetic acid), 0.3-0.8 part of sodium dodecyl sulfate, 0.8-2 parts of nonylphenol polyoxyethylene ether TX-10, 1-2 parts of peregal O-25 and 2-4 parts of lactose.
3. The copper alloy electrolytic powder according to claim 2, characterized in that: the electrolytic powder comprises the following components in parts by weight: 15 parts of soda bead, 40 parts of soda ash, 24.5 parts of sodium metasilicate pentahydrate, 8 parts of sodium citrate, 5 parts of sodium gluconate, 1.5 parts of disodium EDTA, 0.5 part of sodium dodecyl sulfate, 1 part of nonylphenol polyoxyethylene ether TX-10, 1.5 parts of peregal O-25 and 3 parts of lactose.
4. A method for producing the copper alloy electrolytic powder according to any one of claims 1 to 3, characterized by comprising: the method comprises the following steps:
the method comprises the following steps: adding soda ash, sodium metasilicate pentahydrate, sodium citrate, sodium gluconate, disodium EDTA, sodium dodecyl sulfate and lactose into a stirrer, and uniformly stirring;
step two: adding nonylphenol polyoxyethylene ether TX-10 into the stirrer, and uniformly stirring;
step three: heating the peregal O-25 to a transparent state, adding the peregal O-25 into the stirrer, and uniformly stirring;
step four: and finally, uniformly stirring the pearl soda in the stirrer.
5. The method for preparing the copper alloy electrolytic powder according to claim 4, wherein the method comprises the following steps: in the first step and the fourth step, the temperature of the stirrer is controlled to be 25-80 ℃.
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Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1155294A (en) * | 1994-06-13 | 1997-07-23 | 普罗格特-甘布尔公司 | Detergent composition containing anionic surfactants and water-soluble saccharides |
| CN101285204A (en) * | 2007-04-11 | 2008-10-15 | 姜堰市德美化工有限公司 | Degreasing powder for surface treatment of copper and copper alloy and preparation method thereof |
| CN101570881A (en) * | 2008-05-04 | 2009-11-04 | 姜堰市德美化工有限公司 | Phosphorus-free electrolytic degreasing powder for steel and preparation method thereof |
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2019
- 2019-12-26 CN CN201911372947.4A patent/CN111334846A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1155294A (en) * | 1994-06-13 | 1997-07-23 | 普罗格特-甘布尔公司 | Detergent composition containing anionic surfactants and water-soluble saccharides |
| CN101285204A (en) * | 2007-04-11 | 2008-10-15 | 姜堰市德美化工有限公司 | Degreasing powder for surface treatment of copper and copper alloy and preparation method thereof |
| CN101570881A (en) * | 2008-05-04 | 2009-11-04 | 姜堰市德美化工有限公司 | Phosphorus-free electrolytic degreasing powder for steel and preparation method thereof |
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