CN104878442A - Non-phosphorus electrolytic polishing liquid and technology for polishing workpiece surfaces with same - Google Patents
Non-phosphorus electrolytic polishing liquid and technology for polishing workpiece surfaces with same Download PDFInfo
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- CN104878442A CN104878442A CN201510344408.5A CN201510344408A CN104878442A CN 104878442 A CN104878442 A CN 104878442A CN 201510344408 A CN201510344408 A CN 201510344408A CN 104878442 A CN104878442 A CN 104878442A
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Abstract
The invention discloses non-phosphorus electrolytic polishing liquid and a technology for polishing workpiece surfaces with the same. The non-phosphorus electrolytic polishing liquid comprises 30%-60% of sulfuric acid, 15%-35% of organic acid, 1%-5% of brightener, 2%-10% of viscosity modifier, 1%-5% of corrosion inhibitor and 20%-30% of water. The non-phosphorus electrolytic polishing liquid does not contain components not allowed by environmental standards, waste water is convenient to process in the cleaning process, and toxic effects on human body and livestock are avoided. The invention further provides the best polishing process condition for polishing stainless steel workpieces with the non-phosphorus electrolytic polishing liquid. The electrolytic polishing effect is completely identical with the polishing effect of original phosphoric acid electrolytic polishing liquid. The polishing time is short, and machining cost is low.
Description
Technical field
The present invention relates to electrochemical etching technical field, be specifically related to a kind of without phosphorus electrolytic polishing liquid and its preparation method and application.
Background technology
Electropolishing, is that insoluble petal is negative electrode, and the two poles of the earth are immersed in electrolyzer, passes to direct current chemical reaction and produces selectively anode dissolution to be thrown workpiece for anode simultaneously, thus reaches the effect that workpiece surface removes trickle burr and luminance brightness increase.
Existing stainless steel electrolytic polishing fluid most with phosphoric acid, sulfuric acid for main component, then be equipped with corresponding additive, the formula even had in addition chromic anhydride to improve the effect of electropolishing.Such as, application number be 200510109406 the formula that uses of the patent method of its Pingtan metal level " electrolytic polishing liquid and " namely comprise alcohol based additive, phosphoric acid and organic acid.Application number be 201410171714 the etching reagent that uses of patent " polishing fluid and its preparation method and application " be sulfuric acid and phosphoric acid.
In existing polishing fluid formula, chromic acid toxicity is large and corrodibility is strong; Phosphoric acid is then expensive, and when phosphorus content in water body is more than 20mg/L, can causes body eutrophication, cause algal bloom, and the rear decomposition of frond death can make water body produce musty and stink, affects the hydrobiological existence such as fish.
Application number is 201110151813.7 patent discloses " a kind of stainless steel non-chromium electrolytic polishing solution and surface polishing process thereof ", although avoid the without phosphorus use without chromic acid, the main component methyl alcohol wherein used or ethanol material know from experience generation toxic action to people.Therefore, develop a kind of without phosphorus electrolytic polishing liquid that is pollution-free, harmless, environmental protection to have very important significance.
Summary of the invention
The object of the invention is to, provide a kind of without phosphorus electrolytic polishing liquid and this without phosphorus electrolytic polishing liquid to the polished finish technique of workpiece surface.
The present invention is as follows for solving the problems of the technologies described above adopted technical scheme:
A kind of without phosphorus electrolytic polishing liquid, consisting of of this without phosphorus electrolytic polishing liquid: sulfuric acid, organic acid, brightening agent, viscosity modifier, inhibiter, water; Wherein, the content of sulfuric acid is 30% ~ 60%, and organic acid content is 15% ~ 35%, and the content of brightening agent is 1% ~ 5%, and the content of viscosity modifier is 2% ~ 10%, and the content of inhibiter is 1% ~ 5%, the content 20% ~ 30% of water.
Preferably, described organic acid is citric acid and oxalic acid, and the content of described citric acid is 10% ~ 18%, and the content of oxalic acid is 5% ~ 17%.
Preferably, described brightening agent is selected from one or more in asccharin, phenylformic acid, Whitfield's ointment, sulfonic acid, glucose.
Preferably, described viscosity modifier is selected from one or more in glycerine, polyoxyethylene glycol, gelatin, gelatine.
Preferably, if described inhibiter is selected from vulkacit H fourth, thiocarbamide, diamyl amine, toluene thiocarbamide, ethylenediamine tetraacetic acid (EDTA) amine one or more.
The present invention also provides the preparation method of described without phosphorus electrolytic polishing liquid, the method is: added by water in container, then brightening agent is added to the water stirring and dissolving, then adds organic acid stirring and dissolving, finally add sulfuric acid, viscosity modifier, inhibiter stirring and dissolving successively.Described organic acid is preferably the combination of citric acid and oxalic acid.
Present invention also offers described without phosphorus electrolytic polishing liquid carries out polished finish application to stainless steel surface.
The present invention also provides described without phosphorus electrolytic polishing liquid stainless steel surface to be carried out to the processing method of polished finish, the method is: connect positive source using stainless steel work-piece as anode, power cathode is connect as negative electrode using the electro-conductive material that resistance to polishing fluid corrodes, with described without phosphorus electrolytic polishing liquid for electrolytic solution, heating electrolyte temperature is to 55 ~ 65 DEG C, then adjust voltage at 8 ~ 10 volts, polishing time is 3 ~ 5 minutes.The formula of described without phosphorus electrolytic polishing liquid is: sulfuric acid 30% ~ 60%, citric acid 10% ~ 18%, oxalic acid 5% ~ 17%, brightening agent 1% ~ 5%, viscosity modifier 2% ~ 10%, inhibiter 1% ~ 5%, water 20% ~ 30%.
Compared with prior art, beneficial effect of the present invention is as follows:
1, the present invention is by studying each moiety of electrolytic polishing liquid, one or more selecting wherein in the optional substance of each moiety compare and experiment, eliminate usual etching reagent phosphoric acid, keep away with containing any heavy metal (sexavalent chrome etc.) material, any to the virulent material of human body (as methyl alcohol, ethanol etc.) and any flammable and explosive substance (as perchloric acid etc.), prepared without phosphorous Environment-friendlyelectrolytic electrolytic polishing fluid.The waste water that this electrolytic polishing liquid cleaning process produces, not containing the composition that environmental protection standard is forbidden, wastewater treatment is also very convenient, to human body and livestock toxicological harmless effect.
2, for without phosphorus electrolytic polishing liquid of the present invention, also formulated this without phosphorus electrolytic polishing liquid carries out polished finish best polishing technological conditions to stainless steel work-piece, electropolishing effect reaches the polishing effect of original phosphoric acid class electrolytic polishing liquid completely, and polishing time is short, tooling cost is low.
3, electrolytic polishing liquid of the present invention contains citric acid and oxalic acid two kinds of organic acids, and citric acid and oxalic acid two kinds of organic acid compound uses have better polishing effect relative to being used alone citric acid.If be only used alone a kind of organic acid of citric acid in electrolytic polishing liquid, then polishing effect is unsatisfactory, there will be the flaw that glazed surface is rough, polishing brightness is inadequate; By citric acid and oxalic acid used in combination, the defect that glazed surface is rough, polishing brightness is inadequate can be overcome.
Embodiment
Below by way of specific embodiment, technical scheme of the present invention is described.Raw material used in the present invention and reagent are all commercially.
First prepare without phosphorus electrolytic polishing liquid: added by water in container, then brightening agent is added to the water stirring and dissolving, then add organic acid stirring and dissolving, finally add sulfuric acid, viscosity modifier, inhibiter stirring and dissolving successively.Described organic acid is preferably the combination of citric acid and oxalic acid.
Add in electrolyzer by the without phosphorus electrolytic polishing liquid of preparation, stainless steel work-piece is connect positive source as anode, connect power cathode using the electro-conductive material (as plumbous or stainless steel) that resistance to polishing fluid corrodes as negative electrode, ratio of cathodic to anodic area is 1 ~ 3:1; With described without phosphorus electrolytic polishing liquid for electrolytic solution, heating electrolyte temperature is to 55 ~ 65 DEG C, and on load voltage carries out electropolishing.Without phosphorus electrolytic polishing liquid composition (all calculating by massfraction), current density and polishing time are see each embodiment below.The sulfuric acid adopted in following embodiment is the vitriol oil of commercially available massfraction 98%.
Embodiment one
Without phosphorus electrolytic polishing liquid composition: sulfuric acid 40%, citric acid 10%, oxalic acid 10%, asccharin 5%, glycerine 10%, vulkacit H 2%, water 23%.
Electrolytic condition: electrolyte temperature 60 DEG C, voltage 9 volts, current density 40A/dm
2, polishing time 4min.
Embodiment two
Without phosphorus electrolytic polishing liquid composition: sulfuric acid 45%, citric acid 10%, oxalic acid 8%, asccharin 5%, glycerine 4%, vulkacit H 3%, water 25%.
Electrolytic condition: electrolyte temperature 55 DEG C, voltage 10 volts, current density 50A/dm
2, polishing time 3min.
Embodiment three
Without phosphorus electrolytic polishing liquid composition: sulfuric acid 30%, citric acid 15%, oxalic acid 10%, asccharin 5%, glycerine 12%, vulkacit H 3%, water 25%.
Electrolytic condition: electrolyte temperature 50 DEG C, voltage 8 volts, current density 30A/dm
2, polishing time 4.5min.
Embodiment four
Without phosphorus electrolytic polishing liquid composition: sulfuric acid 60%, citric acid 10%, oxalic acid 5%, asccharin 2%, glycerine 1%, vulkacit H 2%, water 20%.
Electrolytic condition: electrolyte temperature 50 DEG C, voltage 10 volts, current density 45A/dm
2, polishing time 4min.
Embodiment five
Without phosphorus electrolytic polishing liquid composition: sulfuric acid 30%, citric acid 15%, oxalic acid 15%, asccharin 2%, glycerine 10%, vulkacit H 3%, water 25%.
Electrolytic condition: electrolyte temperature 60 DEG C, voltage 10 volts, current density 50A/dm
2, polishing time 3min.
Embodiment six
Without phosphorus electrolytic polishing liquid composition: sulfuric acid 40%, citric acid 15%, oxalic acid 8%, phenylformic acid 3%, polyoxyethylene glycol 2%, if fourth 2%, water 30%.
Electrolytic condition: electrolyte temperature 60 DEG C, voltage 8 volts, current density 30A/dm
2, polishing time 5min.
Embodiment seven
Without phosphorus electrolytic polishing liquid composition: sulfuric acid 35%, citric acid 18%, oxalic acid 15%, Whitfield's ointment 2%, gelatin 2%, ethylenediamine tetraacetic acid (EDTA) ammonium 3%, water 25%.
Electrolytic condition: electrolyte temperature 55 DEG C, voltage 10 volts, current density 50A/dm
2, polishing time 4min.
Embodiment eight
Without phosphorus electrolytic polishing liquid composition: sulfuric acid 40%, citric acid 15%, oxalic acid 10%, sulfonic acid 5%, gelatine 2%, toluene thiocarbamide 3%, water 25%.
Electrolytic condition: electrolyte temperature 55 DEG C, voltage 10 volts, current density 50A/dm
2, polishing time 4min.
After electrolytic polishing process in above-described embodiment carries out polishing to stainless steel surface, while stainless steel surface is smoothing, also give stainless steel surface sufficient gloss, the light value after Stainless Steel Watch mirror polish reaches as high as 300GU, reaches the light value after containing phosphorous electropolishing completely.
Above are only part preferred embodiment of the present invention, the present invention is not limited in the content of embodiment.To those skilled in the art, can have various change and change in the concept of technical solution of the present invention, any change done and change, all within scope.
Claims (9)
1. a without phosphorus electrolytic polishing liquid, consisting of of this without phosphorus electrolytic polishing liquid: sulfuric acid, organic acid, brightening agent, viscosity modifier, inhibiter, water; Wherein, the content of sulfuric acid is 30% ~ 60%, and organic acid content is 15% ~ 35%, and the content of brightening agent is 1% ~ 5%, and the content of viscosity modifier is 2% ~ 10%, and the content of inhibiter is 1% ~ 5%, the content 20% ~ 30% of water.
2. a kind of without phosphorus electrolytic polishing liquid as claimed in claim 1, it is characterized in that: described organic acid is citric acid and oxalic acid, the content of described citric acid is 10% ~ 18%, the content of oxalic acid is 5% ~ 17%.
3. a kind of without phosphorus electrolytic polishing liquid as claimed in claim 1, is characterized in that: described brightening agent be selected from asccharin, phenylformic acid, Whitfield's ointment, sulfonic acid, glucose one or more.
4. a kind of without phosphorus electrolytic polishing liquid as claimed in claim 1, is characterized in that: described viscosity modifier be selected from glycerine, polyoxyethylene glycol, gelatin, gelatine one or more.
5. a kind of without phosphorus electrolytic polishing liquid as claimed in claim 1, is characterized in that: if described inhibiter is selected from one or more in vulkacit H fourth, thiocarbamide, diamyl amine, toluene thiocarbamide, ethylenediamine tetraacetic acid (EDTA) amine.
6. the preparation method of the without phosphorus electrolytic polishing liquid described in any one of claim 1-5, the method is: added by water in container, then brightening agent is added to the water stirring and dissolving, then adds organic acid stirring and dissolving, finally add sulfuric acid, viscosity modifier, inhibiter stirring and dissolving successively.
7. the without phosphorus electrolytic polishing liquid described in any one of claim 1-5 carries out the application of polished finish to stainless steel surface.
8. the without phosphorus electrolytic polishing liquid described in any one of claim 1-5 carries out the processing method of polished finish to stainless steel surface, the method is: connect positive source using stainless steel work-piece as anode, power cathode is connect as negative electrode using the electro-conductive material that resistance to polishing fluid corrodes, with described without phosphorus electrolytic polishing liquid for electrolytic solution, heating electrolyte temperature is to 55 ~ 65 DEG C, then adjust voltage at 8 ~ 10 volts, polishing time is 3 ~ 5 minutes.
9. without phosphorus electrolytic polishing liquid as claimed in claim 8 carries out the processing method of polished finish to stainless steel surface, it is characterized in that, the formula of described without phosphorus electrolytic polishing liquid is: sulfuric acid 30% ~ 60%, citric acid 10% ~ 18%, oxalic acid 5% ~ 17%, brightening agent 1% ~ 5%, viscosity modifier 2% ~ 10%, inhibiter 1% ~ 5%, water 20% ~ 30%.
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Cited By (16)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105256368A (en) * | 2015-11-11 | 2016-01-20 | 无锡清杨机械制造有限公司 | Stainless steel polishing method |
| CN105332043A (en) * | 2015-11-24 | 2016-02-17 | 苏州盖德精细材料有限公司 | Normal-temperature electropolishing solution and preparation method thereof |
| CN105332044A (en) * | 2015-11-24 | 2016-02-17 | 苏州盖德精细材料有限公司 | Novel chromic anhydride-free stainless steel electrolytic polishing solution and polishing process thereof |
| CN106567122A (en) * | 2017-02-17 | 2017-04-19 | 大博医疗科技股份有限公司 | Electrochemical polishing electrolyte and polishing method for titanium and titanium alloy |
| CN106637218A (en) * | 2016-12-24 | 2017-05-10 | 李月巧 | Polishing agent and preparation method thereof |
| CN106835259A (en) * | 2016-12-16 | 2017-06-13 | 安徽宝恒新材料科技有限公司 | A kind of electrobrightening processing method of stainless steel |
| CN107858744A (en) * | 2017-11-08 | 2018-03-30 | 上海邦浦实业集团有限公司 | A kind of stainless steel pipes electrolytic polishing liquid and its stainless steel pipes glossing |
| CN108118386A (en) * | 2017-12-29 | 2018-06-05 | 重庆全茂合渝科技有限公司 | A kind of motorcycle fork axis electrolytic polishing process |
| CN109778298A (en) * | 2019-03-19 | 2019-05-21 | 常州华森医疗器械有限公司 | A kind of electrolytic polishing liquid, burnishing device and polishing method |
| CN110219039A (en) * | 2019-05-24 | 2019-09-10 | 深圳市蒙瑞电子有限公司 | A kind of SMT steel mesh polishing liquid |
| CN110230088A (en) * | 2019-07-03 | 2019-09-13 | 岭东核电有限公司 | Cleansing composition and decontamination method |
| CN111663173A (en) * | 2019-03-08 | 2020-09-15 | 江苏越众医疗科技有限公司 | Electrolytic polishing treatment process and equipment for medical surgical anastomat metal piece |
| CN112299725A (en) * | 2019-08-02 | 2021-02-02 | 常熟中信建材有限公司 | Method for manufacturing anti-glare glass |
| CN113337876A (en) * | 2021-04-22 | 2021-09-03 | 中国石油大学(北京) | Electrolytic polishing solution and electrolytic polishing method of nickel-titanium alloy |
| CN113481585A (en) * | 2021-07-12 | 2021-10-08 | 上海应用技术大学 | Electrolytic polishing solution and electrolytic polishing method for stainless steel |
| CN114517299A (en) * | 2022-03-16 | 2022-05-20 | 常熟理工学院 | Water-based cement block dissolving agent and preparation method thereof |
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Cited By (17)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105256368A (en) * | 2015-11-11 | 2016-01-20 | 无锡清杨机械制造有限公司 | Stainless steel polishing method |
| CN105332043A (en) * | 2015-11-24 | 2016-02-17 | 苏州盖德精细材料有限公司 | Normal-temperature electropolishing solution and preparation method thereof |
| CN105332044A (en) * | 2015-11-24 | 2016-02-17 | 苏州盖德精细材料有限公司 | Novel chromic anhydride-free stainless steel electrolytic polishing solution and polishing process thereof |
| CN106835259A (en) * | 2016-12-16 | 2017-06-13 | 安徽宝恒新材料科技有限公司 | A kind of electrobrightening processing method of stainless steel |
| CN106637218A (en) * | 2016-12-24 | 2017-05-10 | 李月巧 | Polishing agent and preparation method thereof |
| CN106567122A (en) * | 2017-02-17 | 2017-04-19 | 大博医疗科技股份有限公司 | Electrochemical polishing electrolyte and polishing method for titanium and titanium alloy |
| CN107858744A (en) * | 2017-11-08 | 2018-03-30 | 上海邦浦实业集团有限公司 | A kind of stainless steel pipes electrolytic polishing liquid and its stainless steel pipes glossing |
| CN108118386A (en) * | 2017-12-29 | 2018-06-05 | 重庆全茂合渝科技有限公司 | A kind of motorcycle fork axis electrolytic polishing process |
| CN111663173A (en) * | 2019-03-08 | 2020-09-15 | 江苏越众医疗科技有限公司 | Electrolytic polishing treatment process and equipment for medical surgical anastomat metal piece |
| CN109778298A (en) * | 2019-03-19 | 2019-05-21 | 常州华森医疗器械有限公司 | A kind of electrolytic polishing liquid, burnishing device and polishing method |
| CN110219039A (en) * | 2019-05-24 | 2019-09-10 | 深圳市蒙瑞电子有限公司 | A kind of SMT steel mesh polishing liquid |
| CN110230088A (en) * | 2019-07-03 | 2019-09-13 | 岭东核电有限公司 | Cleansing composition and decontamination method |
| CN112299725A (en) * | 2019-08-02 | 2021-02-02 | 常熟中信建材有限公司 | Method for manufacturing anti-glare glass |
| CN113337876A (en) * | 2021-04-22 | 2021-09-03 | 中国石油大学(北京) | Electrolytic polishing solution and electrolytic polishing method of nickel-titanium alloy |
| CN113481585A (en) * | 2021-07-12 | 2021-10-08 | 上海应用技术大学 | Electrolytic polishing solution and electrolytic polishing method for stainless steel |
| CN114517299A (en) * | 2022-03-16 | 2022-05-20 | 常熟理工学院 | Water-based cement block dissolving agent and preparation method thereof |
| CN114517299B (en) * | 2022-03-16 | 2023-08-22 | 常熟理工学院 | Cement block water-based dissolving agent and preparation method thereof |
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Application publication date: 20150902 |