CN107779941A - Electrolytic polishing liquid, its preparation method and alloy electrolytic polishing method - Google Patents
Electrolytic polishing liquid, its preparation method and alloy electrolytic polishing method Download PDFInfo
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- CN107779941A CN107779941A CN201710967172.XA CN201710967172A CN107779941A CN 107779941 A CN107779941 A CN 107779941A CN 201710967172 A CN201710967172 A CN 201710967172A CN 107779941 A CN107779941 A CN 107779941A
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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
- C25F3/00—Electrolytic etching or polishing
- C25F3/16—Polishing
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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
- C25F3/00—Electrolytic etching or polishing
- C25F3/02—Etching
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N1/00—Sampling; Preparing specimens for investigation
- G01N1/28—Preparing specimens for investigation including physical details of (bio-)chemical methods covered elsewhere, e.g. G01N33/50, C12Q
- G01N1/32—Polishing; Etching
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Abstract
A kind of electrolytic polishing liquid, its preparation method and alloy electrolytic polishing method, belong to electrobrightening technical field, and the electrolytic polishing liquid is made up of oxalic acid, potassium permanganate and water, and the proportioning of oxalic acid, potassium permanganate and water is 8~10ml：1~2g：90~100ml.Present invention also offers a kind of alloy electrolytic polishing method, it comprises the following steps：By alloy style sanding and polishing, electrobrightening is carried out using above-mentioned electrolytic polishing liquid, using the alloy style after sanding and polishing as anode during electrobrightening, using stainless steel substrates as negative electrode.Alloy electrolytic polishing method provided by the invention can quickly and efficiently corrode to obtain the metallographic structure of alloy, corrosive effect is good, metallurgical structure and crystal boundary can clearly be shown, and crystal grain shows and completely, is easy to researcher to measure its metallographic structure using metallographic microscope and carries out corresponding measurement to analyze.In addition the invention further relates to the preparation method of above-mentioned electrolytic polishing liquid.
Description
Technical field
The present invention relates to electrobrightening field, and more particularly to a kind of electrolytic polishing liquid, its preparation method and alloy electrolysis
Polishing method.
Background technology
Metallographic Analysis is a kind of important means of metal material experimental study, and it can be amplified by Electronic Speculum and observed to be checked
The institutional framework of metal inside is tested to determine the quantitative relationship between metal alloy composition, tissue and performance, it has measurement accuracy
High, fireballing advantage, therefore Metallographic Analysis inspection extensively should be in the quality control in the inspection of raw and process materials, production process, product
Quality inspection, failure analysis etc..
In order to ensure the quick and precisely progress of Metallographic Analysis, it is necessary to be processed by shot blasting to the surface of metal material, remove
The out-of-flatness surface of metal surface and oxide layer, current existing polishing method have mechanical polishing, chemical polishing and electrolysis
Three kinds of polishing, wherein mechanical polishing operation are simple, the flatness of polishing is high, but its labor intensity is big, and can not be to complexity
Part is processed；Requirement of the chemical polishing to equipment is low, and polishing velocity is fast, efficiency high, but it has pollution environment, led to
The defects of wind demand is high, polishing product gloss difference, anti-corrosive properties difference；Electrobrightening have polishing effect it is good, pollution less, cost it is low,
The advantages of product anti-corrosive properties are strong is polished, but the time needed during existing electrolytic polishing method electrobrightening is longer, reduces
Polishing efficiency.
Therefore, it is necessary to it is a kind of can fast erosion obtain the metallographic structure of alloy, and can clearly show metallurgical structure
Alloy electrolytic polishing method.
The content of the invention
It is an object of the invention to provide a kind of electrolytic polishing liquid, and it has the advantages of composition is simple, cost is cheap.
Another object of the present invention is to provide the preparation method of above-mentioned electrolytic polishing liquid, it has simple to operate
Advantage.
Another object of the present invention is to provide a kind of alloy electrolytic polishing method, it can quickly and efficiently corrode to obtain
The metallographic structure of alloy, and metallurgical structure and crystal boundary are clearly shown, it is easy to researcher to measure and analyze.
The present invention is solved its technical problem and realized using following technical scheme.
A kind of electrolytic polishing liquid, it is made up of oxalic acid, potassium permanganate and water, the proportioning of oxalic acid, potassium permanganate and water for 8~
10ml：1~2g：90~100ml.
Further, in present pre-ferred embodiments, the purity of oxalic acid is more than 95%.
Further, in present pre-ferred embodiments, the purity of potassium permanganate is more than 95%.
Present invention also offers the preparation method of above-mentioned electrolytic polishing liquid, and it comprises the following steps：By potassium permanganate and water
By 1~2g：90~100ml volume ratio is well mixed to obtain oxidation solution, and into oxidation solution, addition oxalic acid is well mixed obtains electricity
Solve liquid；The proportioning of potassium permanganate and oxalic acid is 1~2g in electrolyte：8~10ml.
Present invention also offers a kind of alloy electrolytic polishing method, it comprises the following steps：By alloy style sanding and polishing,
Then electrobrightening is carried out using the electrolytic polishing liquid such as any one of claim 1-3；During electrobrightening with sanding and polishing after
Alloy style be anode, using stainless steel substrates as negative electrode.
Further, in present pre-ferred embodiments, sanding and polishing is to use 200 mesh sand successively after using grinder buffing
Paper, 400 mesh sand paper, 600 mesh sand paper, 800 mesh sand paper are ground, and are finally thrown on polishing machine using diamond paste polishing
Light.
Further, in present pre-ferred embodiments, voltage during electrobrightening is 5~6V, and the time is 80~110S.
Further, in present pre-ferred embodiments, the temperature of electrobrightening is 20~30 DEG C.
Further, in present pre-ferred embodiments, alloy style after electrobrightening is handled successively using water and
Dried up after ethanol cleaning.
Further, in present pre-ferred embodiments, alloy is GH1016 alloys.
The beneficial effect of the electrolytic polishing liquid of the embodiment of the present invention, its preparation method and alloy electrolytic polishing method is：This
The electrolytic polishing liquid that inventive embodiments provide is made up of oxalic acid, potassium permanganate and water, and the proportioning of oxalic acid, potassium permanganate and water is 8
~10ml：1~2g：90~100ml.The raw material of the electrolytic polishing liquid is simple, cost is cheap, can effectively improve electrobrightening
Efficiency, and reduce polishing cost.In addition the invention further relates to the preparation method of above-mentioned electrolytic polishing liquid, it includes following step
Suddenly：Potassium permanganate and water are pressed into 8~10ml：90~100ml volume ratio is well mixed to obtain oxidation solution, then in oxidation solution
Addition oxalic acid is well mixed to obtain solution, and the preparation method of the electrolytic polishing liquid is simple to operate, is easy to produce and uses.This
Invention additionally provides a kind of alloy electrolytic polishing method, and it comprises the following steps：By alloy style sanding and polishing, using above-mentioned
Electrolytic polishing liquid carries out electrobrightening, using the alloy style after sanding and polishing as anode during electrobrightening, using stainless steel substrates to be cloudy
Pole.Alloy electrolytic polishing method provided by the invention can quickly and efficiently corrode to obtain the metallographic structure of alloy, corrosive effect
Well, metallurgical structure and crystal boundary can be clearly shown, and crystal grain is shown completely, is easy to researcher to utilize metallographic microscope
Measure its metallographic structure and carry out corresponding measurement analysis.
Brief description of the drawings
In order to illustrate the technical solution of the embodiments of the present invention more clearly, below by embodiment it is required use it is attached
Figure is briefly described, it will be appreciated that the following drawings illustrate only certain embodiments of the present invention, therefore be not construed as pair
The restriction of scope, for those of ordinary skill in the art, on the premise of not paying creative work, can also be according to this
A little accompanying drawings obtain other related accompanying drawings.
Fig. 1 is the metallurgical structure figure of the invention applied in example 1 after GH1016 alloys electrobrightening；
Fig. 2 is the metallurgical structure figure after GH1016 alloy electrobrightenings in the embodiment of the present invention 2.
Embodiment
, below will be in the embodiment of the present invention to make the purpose, technical scheme and advantage of the embodiment of the present invention clearer
Technical scheme be clearly and completely described.Unreceipted actual conditions person, builds according to normal condition or manufacturer in embodiment
The condition of view is carried out.Agents useful for same or the unreceipted production firm person of instrument, it is the conventional production that can be obtained by commercially available purchase
Product.
The electrolytic polishing liquid of the embodiment of the present invention, its preparation method and alloy electrolytic polishing method are carried out specifically below
It is bright.
The embodiments of the invention provide a kind of electrolytic polishing liquid, and it is made up of oxalic acid, potassium permanganate and water, oxalic acid, Gao Meng
The proportioning of sour potassium and water is 8~10ml：1~2g：90~100ml.Wherein, the purity of oxalic acid is preferably more than 95%；Permanganic acid
The purity of potassium is preferably more than 95%.
Electrolytic polishing liquid provided in an embodiment of the present invention, which uses oxalic acid, potassium permanganate being dissolved in water, is configured to electrolysis throwing
Light liquid uses, and wherein potassium permanganate can aoxidize the oxide layer and grease of elution metal material surface, corrosion and dissolving metal material
The deformation fault on surface and hole, the ammeter faces such as corrosion treatment formation are carried out to the surface of metal material；Oxalic acid can be with metal
Ions binding simultaneously forms chelant layer film to the anticorrosive protection of metal surface progress, the chelant layer film in metal material surface
Potassium permanganate can be avoided to produce rough surface to metal surface excessive erosion, improve the smooth degree of electrobrightening；
Electrolytic polishing liquid raw material provided in an embodiment of the present invention is simple, cost is cheap, is adapted to large-scale use.
Present invention also offers the preparation method of above-mentioned electrolytic polishing liquid, and it comprises the following steps：By potassium permanganate and water
By 8~10ml：90~100ml volume ratio is well mixed to obtain oxidation solution, and into oxidation solution, addition oxalic acid is well mixed obtains
Solution；The proportioning of potassium permanganate and oxalic acid is 8~10ml in solution：1~2g.Electrolytic polishing liquid provided in an embodiment of the present invention
Preparation method technique is simple and convenient to operate, and the cheap electrolytic polishing liquid of cost can be prepared.
Present invention also offers a kind of alloy electrolytic polishing method, it comprises the following steps：
S1, by alloy style sanding and polishing；Sanding and polishing uses 200 mesh sand paper, 400 successively after preferably using grinder buffing
Mesh sand paper, 600 mesh sand paper, 800 mesh sand paper are ground, and diamond paste sanding and polishing is finally used on polishing machine；
S2, then carry out electrobrightening using above-mentioned electrolytic polishing liquid；With the alloy after sanding and polishing during electrobrightening
Style is anode, using stainless steel substrates as negative electrode；Voltage during electrobrightening is 5~6V, and the time is 80~110S；Electrobrightening
Temperature is 20~30 DEG C；
S3, electrobrightening is handled after alloy style successively using water and ethanol cleaning after dry up
Preferably, above-mentioned alloy style is style made of GH1016 alloys.
Alloy electrolytic polishing method provided in an embodiment of the present invention first by emery wheel, the sand paper of 200 mesh, 400 mesh sand
Paper, the sand paper of 600 mesh, the sand paper of 800 mesh and polishing machine are polished the surfaces of GH1016 alloy styles successively, remove alloy style table
Oxide layer, pit-hole and the burr in face, then using GH1016 alloys style as anode at 20~30 DEG C, using stainless steel substrates as negative electrode
80~110S of electrobrightening under 5~6V voltage, after obtaining the processing that glossiness is good, flatness is high, anticorrosive property is strong
GH1016 alloy styles, dried up after finally being cleaned to the GH1016 alloys style after processing with water and ethanol, you can carry out metallographic
It is measured microscopically, the table for the polishing GH1016 alloys that alloy electrolytic polishing method provided in an embodiment of the present invention can be rapidly and efficiently
Face, the GH1016 alloy microstructures after corrosion are obvious, and Display of Grain Boundary is clear, and crystal grain is complete, are easy to accurately measure grain size,
Mass defect is analyzed, to meet the technology needs of enterprise development new product, alloy electrobrightening side provided in an embodiment of the present invention
Method technique is simple, easy to operate, and the activity duration is short, effect is high, and the surface to alloy style that can be rapidly and efficiently is handled.
The feature and performance of the present invention are described in further detail with reference to embodiments.
Embodiment 1
GH1016 alloys prepared by a kind of alloy electrolytic polishing method are present embodiments provided, its preparation method is as follows：
S101, prepare electrolytic polishing liquid；Distilled water 90ml is measured with graduated cylinder to pour into flask, and Gao Meng is weighed with electronic balance
Sour potassium 1g is added in flask, and being stirred continuously with glass bar is completely dissolved potassium permanganate particles, then measures oxalic acid 10ml and pour into
Oxidation solution is stated, being gently mixed with glass bar makes solution is well mixed to obtain electrolyte, set aside for use；Wherein potassium permanganate and oxalic acid
Purity more than 95%.
S102, sanding and polishing；GH1016 alloy samples is first smooth with grinder buffing, then successively with 200 mesh sand paper, 400
Mesh sand paper, 600 mesh sand paper, 800 mesh sand paper are ground, and diamond paste is finally utilized on polishing machine to GH1016 alloys
Sample carries out grinding and polishing.
S103, electrobrightening；Using the GH1016 alloy samples after sanding and polishing as anode, with D.C. regulated power supply positive pole phase
Even immerse in electrolyte, using stainless steel substrates as negative electrode, be connected with D.C. regulated power supply negative pole and immerse in electrolyte, voltage selection is
6V, the electrobrightening 80s at 25 DEG C, the polishing spacing between anode and negative electrode are 30mm.
S104, rinse drying；The GH1016 alloy samples surface after electrobrightening is rinsed simultaneously using deionized water
Cleaned with cotton, using alcohol flushing GH1016 alloy samples surface, finally dried up with hair-dryer.
GH1016 alloy samples after above-mentioned processing are taken into multiplication factor under AXIO Observer Alm light microscopes
200 times of micro- metallographic structures of observation, as shown in Figure 1.According to Fig. 1 it can be seen that, the crystal boundary of GH1016 alloy samples and the second phase
Display is clear, and crystal grain is complete, is easy to crystal grain to grade and measure.
Embodiment 2
GH1016 alloys prepared by a kind of alloy electrolytic polishing method are present embodiments provided, its preparation method is as follows：
S201, prepare electrolytic polishing liquid；Distilled water 90ml is measured with graduated cylinder to pour into flask, and Gao Meng is weighed with electronic balance
Sour potassium 1.5g is added in flask, and being stirred continuously with glass bar is completely dissolved potassium permanganate particles, then measures oxalic acid 9ml and pour into
Oxidation solution is stated, being gently mixed with glass bar makes solution is well mixed to obtain electrolyte, set aside for use；Wherein potassium permanganate and oxalic acid
Purity more than 95%.
S202, sanding and polishing；GH1016 alloy samples is first smooth with grinder buffing, then successively with 200 mesh sand paper, 400
Mesh sand paper, 600 mesh sand paper, 800 mesh sand paper are ground, and diamond paste is finally utilized on polishing machine to GH1016 alloys
Sample carries out grinding and polishing.
S203, electrobrightening；Using the GH1016 alloy samples after sanding and polishing as anode, with D.C. regulated power supply positive pole phase
Even immerse in electrolyte, using stainless steel substrates as negative electrode, be connected with D.C. regulated power supply negative pole and immerse in electrolyte, voltage selection is
5.5V, the electrobrightening 90s at 30 DEG C, the polishing spacing between anode and negative electrode are 30mm.
S204, rinse drying；The GH1016 alloy samples surface after electrobrightening is rinsed simultaneously using deionized water
Cleaned with cotton, using alcohol flushing GH1016 alloy samples surface, finally dried up with hair-dryer.
GH1016 alloy samples after above-mentioned processing are taken into multiplication factor under AXIO Observer Alm light microscopes
200 times of micro- metallographic structures of observation, as shown in Figure 2.According to Fig. 2, it can be seen that, the Display of Grain Boundary of GH1016 alloy samples is clear,
And crystal grain is complete, it is easy to crystal grain to grade and measure.
Embodiment 3
GH1016 alloys prepared by a kind of alloy electrolytic polishing method are present embodiments provided, its preparation method is as follows：
S301, prepare electrolytic polishing liquid；Distilled water 100ml is measured with graduated cylinder to pour into flask, and height is weighed with electronic balance
Potassium manganate 2g is added in flask, and being stirred continuously with glass bar is completely dissolved potassium permanganate particles, then measures oxalic acid 10ml and pour into
Above-mentioned oxidation solution, being gently mixed with glass bar makes solution is well mixed to obtain electrolyte, set aside for use；Wherein potassium permanganate and grass
The purity of acid is more than 95%.
S302, sanding and polishing；GH1016 alloy samples is first smooth with grinder buffing, then successively with 200 mesh sand paper, 400
Mesh sand paper, 600 mesh sand paper, 800 mesh sand paper are ground, and diamond paste is finally utilized on polishing machine to GH1016 alloys
Sample carries out grinding and polishing.
S303, electrobrightening；Using the GH1016 alloy samples after sanding and polishing as anode, with D.C. regulated power supply positive pole phase
Even immerse in electrolyte, using stainless steel substrates as negative electrode, be connected with D.C. regulated power supply negative pole and immerse in electrolyte, voltage selection is
5V, the electrobrightening 85s at 20 DEG C, the polishing spacing between anode and negative electrode are 30mm.
S304, rinse drying；The GH1016 alloy samples surface after electrobrightening is rinsed simultaneously using deionized water
Cleaned with cotton, using alcohol flushing GH1016 alloy samples surface, finally dried up with hair-dryer.
Electrolytic polishing liquid, its preparation method and alloy electrolytic polishing method provided in an embodiment of the present invention provide a kind of original
The electrolytic polishing liquid that material is simple, cost is cheap, it can effectively improve the efficiency of electrobrightening, and reduce polishing cost.This
Outer alloy electrolytic polishing method provided by the invention can quickly and efficiently corrode to obtain the metallographic structure of alloy, and corrosive effect is good
It is good, metallurgical structure and crystal boundary can be clearly shown, and crystal grain is shown completely, is easy to researcher to be surveyed using metallographic microscope
Measure its metallographic structure and carry out corresponding measurement analysis.
Embodiments described above is part of the embodiment of the present invention, rather than whole embodiments.The reality of the present invention
The detailed description for applying example is not intended to limit the scope of claimed invention, but is merely representative of the selected implementation of the present invention
Example.Based on the embodiment in the present invention, what those of ordinary skill in the art were obtained under the premise of creative work is not made
Every other embodiment, belongs to the scope of protection of the invention.
Claims (10)
1. a kind of electrolytic polishing liquid, it is characterised in that it is made up of oxalic acid, potassium permanganate and water, the oxalic acid, the permanganic acid
The proportioning of potassium and the water is 8~10ml：1~2g：90~100ml.
2. electrolytic polishing liquid according to claim 1, it is characterised in that the purity of the oxalic acid is more than 95%.
3. electrolytic polishing liquid according to claim 1, it is characterised in that the purity of the potassium permanganate is more than 95%.
4. the preparation method of the electrolytic polishing liquid according to any one of claim 1-3, it is characterised in that it includes following
Step：Potassium permanganate and water are pressed into 1~2g：90~100ml volume ratio is well mixed to obtain oxidation solution, into the oxidation solution
Addition oxalic acid is well mixed to obtain electrolyte；The proportioning of potassium permanganate and the oxalic acid described in the electrolyte is 1~2g：8
~10ml.
5. a kind of alloy electrolytic polishing method, it is characterised in that it comprises the following steps：By alloy style sanding and polishing, then
Electrobrightening is carried out using the electrolytic polishing liquid as any one of claim 1-3；Thrown during the electrobrightening with polishing
Alloy style after light is anode, using stainless steel substrates as negative electrode.
6. alloy electrolytic polishing method according to claim 5, it is characterised in that the sanding and polishing is beaten using emery wheel
It is ground using 200 mesh sand paper, 400 mesh sand paper, 600 mesh sand paper, 800 mesh sand paper after mill, is finally made on polishing machine successively
With diamond paste sanding and polishing.
7. alloy electrolytic polishing method according to claim 5, it is characterised in that the voltage during electrobrightening is 5
~6V, time are 80~110S.
8. alloy electrolytic polishing method according to claim 5, it is characterised in that the temperature of the electrobrightening be 20~
30℃。
9. alloy electrolytic polishing method according to claim 5, it is characterised in that the alloy type after electrobrightening is handled
Sample is dried up after being cleaned successively using water and ethanol.
10. alloy electrolytic polishing method according to claim 5, it is characterised in that the alloy is GH1016 alloys.
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109827830A (en) * | 2019-01-22 | 2019-05-31 | 上海理工大学 | A kind of twin boundary of super stainless steel and the display methods of precipitate |
| CN110687117A (en) * | 2019-10-28 | 2020-01-14 | 攀钢集团攀枝花钢铁研究院有限公司 | Metallographic etchant for wrought superalloy and metallographic structure display method |
| CN112730171A (en) * | 2020-12-30 | 2021-04-30 | 成都市海瑞产品质量技术检测有限公司 | Grain size detection method for low-carbon high-alloy material |
| CN113125318A (en) * | 2021-05-25 | 2021-07-16 | 西安热工研究院有限公司 | Macroscopic grain size detection method for martensite cast steel test piece containing Mo and Co |
| CN114088759A (en) * | 2021-11-11 | 2022-02-25 | 中国航发贵州黎阳航空动力有限公司 | Method for displaying grain size of titanium alloy |
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| CN109827830A (en) * | 2019-01-22 | 2019-05-31 | 上海理工大学 | A kind of twin boundary of super stainless steel and the display methods of precipitate |
| CN110687117A (en) * | 2019-10-28 | 2020-01-14 | 攀钢集团攀枝花钢铁研究院有限公司 | Metallographic etchant for wrought superalloy and metallographic structure display method |
| CN112730171A (en) * | 2020-12-30 | 2021-04-30 | 成都市海瑞产品质量技术检测有限公司 | Grain size detection method for low-carbon high-alloy material |
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| CN113125318A (en) * | 2021-05-25 | 2021-07-16 | 西安热工研究院有限公司 | Macroscopic grain size detection method for martensite cast steel test piece containing Mo and Co |
| CN114088759A (en) * | 2021-11-11 | 2022-02-25 | 中国航发贵州黎阳航空动力有限公司 | Method for displaying grain size of titanium alloy |
| CN114088759B (en) * | 2021-11-11 | 2023-11-21 | 中国航发贵州黎阳航空动力有限公司 | Method for displaying grain size of titanium alloy |
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