CN106676529A - Alkaline chemical polishing method for 1060 aluminum alloy and alkaline chemical polishing solution adopted by alkaline chemical polishing method - Google Patents
Alkaline chemical polishing method for 1060 aluminum alloy and alkaline chemical polishing solution adopted by alkaline chemical polishing method Download PDFInfo
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- CN106676529A CN106676529A CN201710104706.6A CN201710104706A CN106676529A CN 106676529 A CN106676529 A CN 106676529A CN 201710104706 A CN201710104706 A CN 201710104706A CN 106676529 A CN106676529 A CN 106676529A
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- chemical polishing
- sodium
- alkaline chemical
- aluminum alloy
- basic chemical
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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
- C23F—NON-MECHANICAL REMOVAL OF METALLIC MATERIAL FROM SURFACE; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL; MULTI-STEP PROCESSES FOR SURFACE TREATMENT OF METALLIC MATERIAL INVOLVING AT LEAST ONE PROCESS PROVIDED FOR IN CLASS C23 AND AT LEAST ONE PROCESS COVERED BY SUBCLASS C21D OR C22F OR CLASS C25
- C23F3/00—Brightening metals by chemical means
- C23F3/02—Light metals
Abstract
The invention discloses an alkaline chemical polishing method for a 1060 aluminum alloy and an alkaline chemical polishing solution adopted by the alkaline chemical polishing method. The alkaline chemical polishing method comprises the steps that aluminum and/or the aluminum alloy are/is put into absolute ethyl alcohol to be pretreated, and then washed through deionized water; the pretreated aluminum and/or the aluminum alloy are/is put into the alkaline chemical polishing solution to be subjected to alkaline chemical polishing; and the polished aluminum and/or the aluminum alloy are/is sequentially put into dilute nitric acid to be neutralized, put into the deionized water to be subjected to ultrasonic washing for 5-15 min, and taken out to be blow-dried. The alkaline chemical polishing solution is an aqueous solution composed of 250 g/L sodium hydroxide, 150 g/L sodium nitrate, 250 g/L sodium acetate, 75 g/L sodium bromate, 15 g/L sodium fluoride and 2 g/L zinc sulfate. The alkaline chemical polishing method is environmentally friendly, and the polished aluminum alloy surface is good in brightness and flatness.
Description
The application is Application No. 201510143972.0, and the applying date is on March 30th, 2015, and invention and created name is
The divisional application of the application for a patent for invention of " basic chemical polishing method and its basic chemical polishing liquid of employing ".
Technical field
The invention belongs to field of metal surface treatment technology, and in particular to a kind of basic chemical polishing method and its employing
Basic chemical polishing liquid.
Background technology
The method being polished to aluminum and aluminum alloy surface mainly includes Mechanical Method, electrochemical process and chemical method.Machinery
Polishing and electrochemical polish have certain requirement due to the shapes and sizes to part, therefore, using being subject to certain restrictions.And
Chemical polishing shape then not by part, size are limited, and can disposably be processed more part, therefore, it is at present most
Conventional finishing method.
And existing chemically polishing method is mainly or using acidic chemical polishing liquid（Containing phosphoric acid, sulphuric acid and nitric acid,
It is commonly called as three acid polishing liquid）, the advantage of acidic chemical polishing liquid is：Preferably, the piece surface after polishing is bright, flat for polishing effect
It is whole；Shortcoming is then：Substantial amounts of NOx gases can be produced in polishing process, environmental pollution is serious.
Chinese patent literature CN102925900A discloses a kind of basic chemical polishing liquid, and it is by 150~280g/L
Sodium hydroxide, the sodium nitrite of 100~150g/L, the sodium fluoride of 1~1.2g/L, the sodium phosphate of 10~20g/L and surplus
Water is constituted.Chinese patent literature CN103668228A also discloses that a kind of basic chemical polishing solution, and it is by 180~200g/L
Sodium hydroxide, the sodium nitrite of 145~180g/L, the sodium nitrate of 155~200g/L, 100~150g/L tertiary sodium phosphate with
And the water composition of surplus.
Above two basic chemical polishing liquid and acidic chemical polishing liquid phase ratio, advantage is：It is environmentally friendly；Shortcoming is then
It is：Polishing effect is not as good as acidic chemical polishing liquid, and the aluminum alloy surface brightness and flatness after especially polishing is poor.
Japanese documentation JPS5845380A discloses a kind of basic chemical polishing liquid, and it is by sodium hydroxide, nitrous acid
Sodium, sodium nitrate, sodium phosphate, heavy metallic salt and silicide composition.The document is by adding heavy metallic salt to improve product surface
Brightness, but flatness is not still good, product surface exist " point-like vesicle " or " meat skin shape " defect.
Chinese patent literature CN1031574A discloses a kind of aluminum and aluminum alloy basification optical polishing solution, and it is by hydrogen-oxygen
Change sodium, sodium nitrate, heavy metallic salt, pyrophosphate or hexametaphosphate or metavanadate composition.The document is by adding pyrophosphoric acid
Salt or hexametaphosphate are used cooperatively with heavy metallic salt, so as to both improve brightness, also improve flatness.But pyrophosphoric acid
The addition of salt and hexametaphosphate is still unfriendly to environment.
The content of the invention
An object of the present invention is to solve above-mentioned technical problem, there is provided a kind of not only environmentally friendly but also can make throwing
The preferable basic chemical polishing method of aluminum alloy surface brightness and flatness after light.
Another object of the present invention is to provide the basic chemical polishing liquid of said method employing.
Realizing the technical scheme of one of the object of the invention is：A kind of basic chemical polishing method, has steps of：1. will
Aluminum and/or aluminium alloy are put in dehydrated alcohol carries out pretreatment, and then deionized water is cleaned；2. by pretreated aluminum
And/or aluminium alloy is put in basic chemical polishing liquid, 5~20s of basic chemical polishing is carried out at a temperature of 30~80 DEG C；Institute
The aqueous solution that the basic chemical polishing liquid stated is made up of the component of following concentration：100~500g/L of sodium hydroxide, sodium nitrate 50
~200g/L, 100~500g/L of sodium acetate, 10~150g/L of sodium bromate, 5~20g/L of sodium fluoride, the sulfate 0.1 of heavy metal
~4g/L；3. the aluminum and/or aluminium alloy after polishing is sequentially placed in dust technology and is neutralized, puts in deionized water
Row is cleaned by ultrasonic 5~15min, taking-up and dries up.
The aqueous solution that described basic chemical polishing liquid is preferably made up of the component of following concentration：Sodium hydroxide 150~
300g/L, 75~175g/L of sodium nitrate, 150~300g/L of sodium acetate, 25~100g/L of sodium bromate, 7.5~17.5g/ of sodium fluoride
L, the 0.5~3g/L of sulfate of heavy metal.
The aqueous solution that described basic chemical polishing liquid is more preferably made up of the component of following concentration：Sodium hydroxide 200
~250g/L, 100~150g/L of sodium nitrate, 200~250g/L of sodium acetate, 50~75g/L of sodium bromate, 10~15g/L of sodium fluoride,
1~the 2g/L of sulfate of heavy metal.
Described heavy metal is the one or two kinds of in Ni, Cu, Co, Zn, Sb, Pb, As, preferably Cu and/or Zn.
Realizing the technical scheme of another object of the present invention is：The basic chemical polishing that a kind of basic chemical polishing method is adopted
Liquid its aqueous solution for being made up of the component of following concentration：100~500g/L of sodium hydroxide, 50~200g/L of sodium nitrate, acetic acid
100~500g/L of sodium, 10~150g/L of sodium bromate, 5~20g/L of sodium fluoride, the 0.1~4g/L of sulfate of heavy metal.
The aqueous solution being preferably made up of the component of following concentration：150~300g/L of sodium hydroxide, sodium nitrate 75~
175g/L, 150~300g/L of sodium acetate, 25~100g/L of sodium bromate, 7.5~17.5g/L of sodium fluoride, the sulfate of heavy metal
0.5~3g/L.
The aqueous solution being more preferably made up of the component of following concentration：200~250g/L of sodium hydroxide, sodium nitrate 100~
150g/L, 200~250g/L of sodium acetate, 50~75g/L of sodium bromate, 10~15g/L of sodium fluoride, the 1~2g/ of sulfate of heavy metal
L。
Described heavy metal is the one or two kinds of in Ni, Cu, Co, Zn, Sb, Pb, As, preferably Cu and/or Zn.
The good effect that the present invention has：The present invention has surprisingly found that, is matched somebody with somebody with heavy metal sulfate by adding sodium bromate
Conjunction is used, and can either improve the brightness of aluminum alloy product surface, it is also possible to improve flatness, solves product surface " point-like
The defect such as vesicle " and " meat skin shape ", and the basic chemical polishing liquid is environmentally friendly.
Description of the drawings
Fig. 1 is the metallurgical microscope photo of 7075 aluminum alloy surfaces Jing after the basic chemical polishing of embodiment 1.
Fig. 2 is the metallurgical microscope photo of 1060 aluminum alloy surfaces Jing after the basic chemical polishing of embodiment 6.
Fig. 3 is the metallurgical microscope photo of 7075 aluminum alloy surfaces by contrast after the basic chemical polishing of example 1.
Fig. 4 is the metallurgical microscope photo of 7075 aluminum alloy surfaces by contrast after the basic chemical polishing of example 2.
Fig. 5 is the metallurgical microscope photo of 7075 aluminum alloy surfaces by contrast after the basic chemical polishing of example 3.
Specific embodiment
（Embodiment 1）
The present embodiment is to carry out basic chemical polishing to 7075 aluminum alloy surfaces, is had steps of：
1. 7075 aluminium alloys are put into into immersion 5min in dehydrated alcohol carries out pretreatment, and then deionized water is cleaned.
2. pretreated 7075 aluminium alloy is put in basic chemical polishing liquid, alkalescence is carried out at a temperature of 60 DEG C
Chemical polishing 10s.
The aqueous solution that the basic chemical polishing liquid of the present embodiment is made up of the component of following concentration：Sodium hydroxide 200g/
L；Sodium nitrate 100g/L；Sodium acetate 200g/L；Sodium bromate 50g/L；Sodium fluoride 10g/L；Copper sulfate 1g/L.
3. by polishing after 7075 aluminium alloys first put in dust technology and be neutralized, be then placed in entering in deionized water
Row is cleaned by ultrasonic 10min, finally takes out hot blast drying.
The metallurgical microscope photo of 7075 aluminum alloy surfaces Jing after the basic chemical polishing of the present embodiment is shown in Fig. 1, by Fig. 1
It can be seen that：The 7075 aluminum alloy surface brightness is preferable.
（2~embodiment of embodiment 5）
Each embodiment is substantially the same manner as Example 1, and difference is the composition of basic chemical polishing liquid, is specifically shown in Table 1.
Table 1
| Embodiment 1 | Embodiment 2 | Embodiment 3 | Embodiment 4 | Embodiment 5 | |
| Sodium hydroxide | 200g/L | 250g/L | 200g/L | 300g/L | 150g/L |
| Sodium nitrate | 100g/L | 150g/L | 100g/L | 175g/L | 75g/L |
| Sodium acetate | 200g/L | 250g/L | 200g/L | 300g/L | 150g/L |
| Sodium bromate | 50g/L | 75g/L | 50g/L | 100g/L | 25g/L |
| Sodium fluoride | 10g/L | 15g/L | 10g/L | 17.5g/L | 7.5g/L |
| Sulfate | Copper sulfate 1g/L | Copper sulfate 1g/L | Copper sulfate 2g/L | Zinc sulfate 2g/L | Nickel sulfate 1g/L |
（Embodiment 6）
The present embodiment is to carry out basic chemical polishing to 1060 aluminum alloy surfaces, is had steps of：
1. 1060 aluminium alloys are put into into immersion 5min in dehydrated alcohol carries out pretreatment, and then deionized water is cleaned.
2. pretreated 1060 aluminium alloy is put in basic chemical polishing liquid, alkalescence is carried out at a temperature of 50 DEG C
Chemical polishing 10s.
The aqueous solution that the basic chemical polishing liquid of the present embodiment is made up of the component of following concentration：Sodium hydroxide 250g/
L；Sodium nitrate 150g/L；Sodium acetate 250g/L；Sodium bromate 75g/L；Sodium fluoride 15g/L；Zinc sulfate 2g/L.
3. by polishing after 1060 aluminium alloys first put in dust technology and be neutralized, be then placed in entering in deionized water
Row is cleaned by ultrasonic 10min, finally takes out hot blast drying.
The metallurgical microscope photo of 1060 aluminum alloy surfaces Jing after the basic chemical polishing of the present embodiment is shown in Fig. 2, by Fig. 2
It can be seen that：The 1060 aluminum alloy surface brightness is preferable.
（7~embodiment of embodiment 10）
Each embodiment is substantially the same manner as Example 6, and difference is the composition of basic chemical polishing liquid, is specifically shown in Table 2.
Table 2
| Embodiment 6 | Embodiment 7 | Embodiment 8 | Embodiment 9 | Embodiment 10 | |
| Sodium hydroxide | 250g/L | 200g/L | 250g/L | 150g/L | 300g/L |
| Sodium nitrate | 150g/L | 100g/L | 150g/L | 75g/L | 175g/L |
| Sodium acetate | 250g/L | 200g/L | 250g/L | 150g/L | 300g/L |
| Sodium bromate | 75g/L | 50g/L | 75g/L | 25g/L | 100g/L |
| Sodium fluoride | 15g/L | 10g/L | 15g/L | 7.5g/L | 17.5g/L |
| Sulfate | Zinc sulfate 2g/L | Zinc sulfate 2g/L | Zinc sulfate 1g/L | Copper sulfate 1g/L | Cobaltous sulfate 2g/L |
（1~comparative example of comparative example 3）
Each comparative example is substantially the same manner as Example 1, and difference is the composition of basic chemical polishing liquid, is specifically shown in Table 3.
Table 3
| Comparative example 1 | Comparative example 2 | Comparative example 3 | |
| Sodium hydroxide | 200g/L | 200g/L | 200g/L |
| Sodium nitrate | 100g/L | 100g/L | 100g/L |
| Sodium acetate | 200g/L | 200g/L | 200g/L |
| Sodium bromate | - | - | 50g/L |
| Sodium fluoride | 10g/L | 10g/L | 10g/L |
| Sulfate | Copper sulfate 1g/L | - | - |
Claims (2)
1. a kind of 1060 aluminum alloy basification optical polishing method, it is characterised in that have steps of：
1. 1060 aluminium alloys are put into into immersion 5min in dehydrated alcohol carries out pretreatment, and then deionized water is cleaned；
2. pretreated 1060 aluminium alloy is put in basic chemical polishing liquid, alkali electroless is carried out at a temperature of 50 DEG C
Polishing 10s；
The aqueous solution that described basic chemical polishing liquid is made up of the component of following concentration：Sodium hydroxide 250g/L；Sodium nitrate
150g/L；Sodium acetate 250g/L；Sodium bromate 75g/L；Sodium fluoride 15g/L；Zinc sulfate 2g/L；
3. by polishing after 1060 aluminium alloys first put in dust technology and be neutralized, be then placed in being surpassed in deionized water
Sound cleans 10min, finally takes out hot blast drying.
2. the basic chemical polishing liquid that a kind of 1060 aluminum alloy basification optical polishing method is adopted, it is characterised in that it is by following
The aqueous solution of the component composition of concentration：Sodium hydroxide 250g/L；Sodium nitrate 150g/L；Sodium acetate 250g/L；Sodium bromate 75g/L；
Sodium fluoride 15g/L；Zinc sulfate 2g/L.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201710104706.6A CN106676529B (en) | 2015-03-30 | 2015-03-30 | A kind of 1060 aluminum alloy basification optical polishing method and its basic chemical polishing liquid of use |
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|---|---|---|---|
| CN201710104706.6A CN106676529B (en) | 2015-03-30 | 2015-03-30 | A kind of 1060 aluminum alloy basification optical polishing method and its basic chemical polishing liquid of use |
| CN201510143972.0A CN104694931B (en) | 2015-03-30 | 2015-03-30 | The basic chemical polishing liquid of basic chemical polishing method and its employing |
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| CN201710104706.6A Active CN106676529B (en) | 2015-03-30 | 2015-03-30 | A kind of 1060 aluminum alloy basification optical polishing method and its basic chemical polishing liquid of use |
| CN201710104707.0A Active CN106702389B (en) | 2015-03-30 | 2015-03-30 | A kind of 7075 aluminum alloy basification optical polishing method and its basic chemical polishing liquid of use |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108950565A (en) * | 2018-08-16 | 2018-12-07 | 广州波耳化工科技有限公司 | Aluminum alloy chemically polishing agent and aluminum alloy surface polishing method |
| CN112522709A (en) * | 2020-12-18 | 2021-03-19 | 东莞市新东明科技有限公司 | Flat plate shell polishing method |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105177586A (en) * | 2015-07-21 | 2015-12-23 | 安徽江威精密制造有限公司 | Aluminum alloy polishing solution and preparing method thereof |
| CN105039992A (en) * | 2015-07-21 | 2015-11-11 | 安徽江威精密制造有限公司 | Alkaline polishing solution and preparation method thereof |
| CN106757034A (en) * | 2016-11-28 | 2017-05-31 | 江南大学 | A kind of preparation method of alkalinous metal polishing fluid |
| CN110629225B (en) * | 2018-06-25 | 2021-11-12 | 比亚迪股份有限公司 | Aluminum alloy alkaline chemical polishing solution, preparation method and polishing method |
| CN113718328B (en) * | 2021-11-04 | 2022-02-11 | 山东裕航特种合金装备有限公司 | Surface treatment method for aluminum alloy casting for ship |
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| JPS5845380A (en) * | 1981-09-14 | 1983-03-16 | Yokoyama Hyomen Kogyo Kk | Alkaline chemical polishing liquid for aluminum |
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2015
- 2015-03-30 CN CN201510143972.0A patent/CN104694931B/en active Active
- 2015-03-30 CN CN201710104706.6A patent/CN106676529B/en active Active
- 2015-03-30 CN CN201710104707.0A patent/CN106702389B/en active Active
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| JPS5845380A (en) * | 1981-09-14 | 1983-03-16 | Yokoyama Hyomen Kogyo Kk | Alkaline chemical polishing liquid for aluminum |
| CN1031574A (en) * | 1987-06-19 | 1989-03-08 | 北京航空学院 | Aluminium and aluminum alloy basification optical polishing solution |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108950565A (en) * | 2018-08-16 | 2018-12-07 | 广州波耳化工科技有限公司 | Aluminum alloy chemically polishing agent and aluminum alloy surface polishing method |
| CN112522709A (en) * | 2020-12-18 | 2021-03-19 | 东莞市新东明科技有限公司 | Flat plate shell polishing method |
Also Published As
| Publication number | Publication date |
|---|---|
| CN104694931B (en) | 2017-03-15 |
| CN104694931A (en) | 2015-06-10 |
| CN106676529B (en) | 2019-01-25 |
| CN106702389B (en) | 2019-01-25 |
| CN106702389A (en) | 2017-05-24 |
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