CN1566410A - Method for anode treatment of aluminum casting profile - Google Patents
Method for anode treatment of aluminum casting profile Download PDFInfo
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- CN1566410A CN1566410A CN 03147941 CN03147941A CN1566410A CN 1566410 A CN1566410 A CN 1566410A CN 03147941 CN03147941 CN 03147941 CN 03147941 A CN03147941 A CN 03147941A CN 1566410 A CN1566410 A CN 1566410A
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Abstract
The invention discloses a method for anode treatment of aluminum casting profile which comprises anodic treatment, charging chemical agent, surface polishing, surface activating treatment, mechanical grinding, high temperature water scrubbing.
Description
Technical field
The present invention relates to a kind of metallic substance anode treatment method, particularly relate to a kind of the shortening and make man-hour, the aluminum casting profile anode treatment method that reduces production costs.
Background technology
General aluminum products possess erosion-resisting purpose for making it, can do anodizing to aluminum products usually, make the surface produce oxide scale film, because this oxide scale film compact structure, can form iris action on the aluminum products surface, prevent that extraneous air, aqueous vapor etc. from contacting with inside, and reach etch-proof effect; As shown in Figure 1, be the surperficial anodizing flow process that general aluminium is forged molding, its key step is:
One, mechanical type pre-treatment: wherein a kind of method of the grinding of common available cloth wheel, abrasion wheel grinding, cylinder grinding, abrasive blasting or other grinding, aluminium is forged the former bad oxide scale film in molding surface remove.
Two, chemical formula pre-treatment: after several water wash procedures, aluminium is forged molding surface grease remove, wherein a kind of with the polishing of pears ground, electropolishing, chemical rightenning or etching method forges the molding surface to aluminium and does polishing then, makes its generation gloss.
Three, anodizing: again through washing several, then wherein a kind of with sulphuric acid anodizing method, oxalic acid anodizing method, chromic acid electrolytic process, other sour electrolytic process or hard film method made aluminium forge the molding surface and produces oxide scale film after polishing was finished.
Four, painted (dyeing) processing: after the washing,, aluminium forging molding is dyeed with the wherein a kind of of organic coloring method, inorganic coloring method, natural coloring method or electrocolor process according to product demand.
Five, sealing of hole: the painted after washing of finishing, again with water and sealing of hole are handled, the metal-salt sealing of hole is handled, the organism sealing of hole is handled or the application sealing of hole is handled wherein a kind of method, aluminium is forged molding do the sealing of hole processing, its surface oxidation epithelium is shunk, form dense structure, after after the washing, drying, just finish surperficial anodizing operation.
Applied to the surface treatment that this eka-aluminum is swaged into the shape product in the past, because the part of the non-anodizing of mechanical mill,, influenced the smooth and easy of production operation, production cost is improved so haulage time, working method are very long to the anodizing deadline; And general aluminium is cast molding because of material behavior, and outward appearance easily produces runner trace, Cavitations etc., and is not suitable for doing anodizing with this method, a cover anode treatment method so industry develops in addition, does surface treatment at aluminium casting molding; As shown in Figure 2, the surperficial anodizing flow process of general aluminium casting molding, its key step is:
One, mechanical type pre-treatment: grind and the interpolation abrasive with vibration (cylinder), aluminium is cast the former bad oxide film in molding surface remove washing then.
Two, degreasing is cleaned: mix 98% sulphuric acid soln with 40～60 ℃ grease-removing agents and soaked 1～5 minute, aluminium is cast molding surface grease remove, and clean through washing.
Three, sensitization is handled: mix with 85% phosphoric acid solution, 62% salpeter solution and promotor, and soaked 0.4～1 minute for 100～110 ℃, make aluminium casting molding surface form activated interfaces with temperature, and clean through washing again.
Four, sensitization secondary treatment: soak with the chemical agent below 40 ℃ (as strong acid), and make aluminium casting molding surface heat, reach the interface activation effect, take out washing totally.
Five, oxidation suppresses: at room temperature with the chemical agent of pressure 4kg/cm2 spray is done on aluminium casting molding surface and removed, about 4 minutes of time, aluminium is cast the molding surface film oxide remove, and washing is clean.
Six, wet chemistry grinds: use diameter 3.2mm～4.0mm steel ball to add the powdery abrasive,, aluminium casting molding is done grinding, make its surface-stable, and eliminate partly residual mechanical stress with vibration (cylinder) lapping mode, and then clean through washing.
Seven, secondary degreasing is cleaned: mix 98% sulphuric acid soln with 40～60 ℃ grease-removing agents and soaked 1～5 minute, aluminium is cast molding surface grease remove, and clean through washing.
Eight, anodizing: aluminium is cast molding insert in the sulphuric acid soln of the dissolving aluminium acid element that is added with 0.5～12g/L, temperature keeps 23～24 ℃, reply 40～60 minutes method reaction times with electric current, make aluminium casting molding surface form fine and close oxide scale film, take out washing.
Nine, painted: the aluminium casting molding that will be formed with oxide scale film according to product demand dyes, for example can be with the acid blue black dyestuff of PH4.7～4.8 in stainless steel tank, and temperature was soaked 5～20 minutes for 50～55 ℃, took out washing.
Ten, sealing of hole: the aluminium casting molding of finishing painted is immersed in and contains in 7～10g/L heavy metal salt solution, 80～100 ℃ of temperature, in the time of approximately 2～20 minutes, washing then.
11, drying: dehydrate.
12, Treating Cuttings with Paraffin Wax: 22～23 ℃ aluminium is cast the molding surface with temperature and coat paraffin, then in 80～100 ℃ of dryings 1～2 minute, air cooling was 10 minutes then, just finishes whole surface treatment flow process.
According to above-mentioned steps aluminium casting molding is done surperficial anodizing and can obtain quality good oxidation epithelium, and then reach the purpose against corrosion and the finished product of surface luster, but, in this anodizing flow process, there is the chemical agent of 12 passages to need to contact approximately with aluminium casting molding, so that it produces oxide scale film, because the action time of pharmaceutical chemicals is longer, cause this method processing extremely long man-hour, and operational condition is more rigorous, if control is improper, can't obtain the good oxide scale film of quality, production cost is improved.
Summary of the invention
The object of the present invention is to provide a kind ofly by manufacturing in the flow process, add mechanical mill and handle, can make surface generation epithelium against corrosion with chemical agent in anodizing, and the aluminum casting profile anode treatment method of surface smoothing light.
Aluminum casting profile anode treatment method of the present invention comprises the following steps:
Step 1: alumite purifies:
It is worn with the mechanical polishing method aluminium to be cast the former residual oxide film of molding appearance at normal temperatures, takes out washing;
Step 2: degreasing is cleaned:
After aluminium casting molding grinds, then add the proper concn sulphuric acid soln aluminium is cast shape with grease-removing agent
The surperficial grease of product is removed, and takes out washing;
Step 3: surface finish is handled:
Soak with proper concn ratio phosphoric acid, salpeter solution, aluminium cast the molding surface do chemical rightenning,
Through water wash procedures residual chemical solution is cleaned then;
Step 4: acidic surface activation treatment:
Aluminium casting molding after the surface finish processing is cooperated suitably with the acidic activated agent solution of comparatively high temps
The salpeter solution of ratio soaks the scheduled time, makes aluminium casting molding form the surface active layer, then
Take out washing;
Step 5: mechanical polishing:
The aluminium casting molding that the acidic surface activation treatment is finished shakes with the tiny grinding medium of diameter
The moving grinding makes the surface active layer stable, and increases surface luster, takes out with proper temperature hot water
Wash;
Step 6: drying:
Aluminium behind mechanical polishing is cast shape product dehydration drying;
Step 7: anodizing:
Dried aluminium casting molding is placed on the plain sulphuric acid soln of acid that is added with the solubilized aluminium
In, and carry out anodizing with electric current answer method, make aluminium casting molding surface produce oxide scale film,
Take out washing then;
Step 8: sealing of hole:
Deionized water with proper temperature carries out the sealing of hole program, the aluminium casting molding that anodizing is finished
The surface oxidation epithelium is more stable;
Step 9: drying is finished product:
After the aluminium casting molding washing that sealing of hole is finished, drying is handled, and just finishes all anodizing
Program make the surface of aluminium casting molding produce epithelium against corrosion, and the surface smoothing light is indefectible.
Advantage of the present invention is: the present invention adds chemical agent to handle and mechanical mill in the anodizing flow process, make aluminium casting molding before doing anodizing, obtain the preferable activated interfaces in a surface, and increase its surface luster, and chemical agent on stream can be shared, so can reduce pharmaceutical chemicals different concns proportioning, operation is more simplified, and the present invention is except can being used in aluminium casting molding, also the utmost point is applicable to aluminium forging molding, therefore, be different from anodizing flow process (as Fig. 1) in the past and do the shortcoming that aluminium is forged molding only, moreover the present invention can effectively shorten the treatment time, improves long shortcoming in the molding anodizing flow process (as Fig. 2) of aluminium casting in the past man-hour, so the present invention more can reduce production costs.
In order further to understand essence of the present invention, the present invention will be further described below in conjunction with the drawings and specific embodiments.
Description of drawings
Fig. 1 is the schematic flow sheet that a kind of in the past aluminium is forged the molding anodizing.
Fig. 2 is the schematic flow sheet of another kind of in the past aluminium casting molding anodizing.
Fig. 3 is the schematic flow sheet of the present invention's one preferable enforcement.
Embodiment
As shown in Figure 3, aluminum casting profile anode treatment method one preferred embodiment of the present invention mainly is to form the oxide scale film of a densification on aluminium casting molding surface, and makes the brightness of product surface tool gloss, includes the following step:
Step 1: alumite purifies:
It is worn with the mechanical polishing method aluminium to be cast the former residual oxide film of molding appearance at normal temperatures, then
Take out washing.
Step 2: degreasing is cleaned:
After aluminium casting molding grinds, then at normal temperatures, add concentration 30～50% with grease-removing agent solution
Sulphuric acid soln aluminium cast molding soak 1～5 minute removing surperficial grease, and take out water
Wash.
Step 3: surface finish is handled:
Soaked 0.5～4 minute with concentration 85% phosphoric acid, 62% nitric acid mixing solutions again, aluminium is cast shape
Chemical rightenning is done on the product surface, through water wash procedures residual chemical solution is cleaned then.
Step 4: acidic surface activation treatment:
Aluminium casting molding that will be after surface finish is handled is molten with 100～110 ℃ of temperature acidic activators
Liquid cooperates concentration 62%, and (70～100ml/L) nitric acid mixing solutions soaked 1 minute, made aluminium
The casting molding forms the surface active layer, takes out washing then.
Step 5: mechanical polishing:
The aluminium casting molding that the acidic surface activation treatment is finished advances with the steel ball of the thin 3.0～3.5mm of diameter
About 10 minutes of row vibro-grinding is cast the part stress of molding remained on surface to remove aluminium, and is made table
The face active layer is stable, and increases surface luster, and the hot water that takes out then with 80～120 ℃ of temperature advances
About 1 minute of row washing.
Step 6: drying:
Aluminium behind mechanical polishing is cast shape product dehydration drying.
Step 7: anodizing:
Dried aluminium casting molding is placed on the plain sulphuric acid soln of acid that is added with the solubilized aluminium
In, and carry out anodizing with electric current answer method, make aluminium casting molding surface produce fine and close oxygen
Change epithelium, take out washing then.
Step 8: sealing of hole:
Carry out the sealing of hole program with the deionized water of temperature more than 70 ℃, the aluminium that anodizing is finished is cast
Shape product surface oxidation epithelium shrinks, and oxide scale film that must be stable.
Step 9: drying is finished product:
After the aluminium casting molding washing that sealing of hole is finished, drying is handled, and just finishes all anodizing
Program makes the surperficial oxide scale film that produces tool effect against corrosion of aluminium casting molding, and surface smoothing light
Bright indefectible.
In addition, the also visual product demand of the present invention after the step 7 anodizing is finished, is done dyeing to aluminium casting molding, and its staining method does not repeat them here with identical in the past, wait to dye finish after, continue sealing of hole, exsiccant step again.
Claims (4)
1, a kind of aluminum casting profile anode treatment method comprises the following steps:
Step 1: alumite purifies:
It is worn with the mechanical polishing method aluminium to be cast the former residual oxide film of molding appearance at normal temperatures, takes out washing;
Step 2: degreasing is cleaned:
After aluminium casting molding grinds, then aluminium is cast molding surface grease and remove, and take out washing with the sulphuric acid soln of grease-removing agent interpolation concentration 30～50;
Step 3: surface finish is handled:
Mixing solutions with concentration 85% phosphoric acid, 62% nitric acid soaked 0.5～4 minute, aluminium is cast the molding surface do chemical rightenning, through water wash procedures residual chemical solution was cleaned then;
Step 4: acidic surface activation treatment:
Cooperate the salpeter solution of concentration 62% to soak 1 minute with 100～110 ℃ of acidic activated agent solutions of temperature the aluminium casting molding after the surface finish processing, make aluminium casting molding formation surface active layer, take out washing then;
Step 5: mechanical polishing:
The aluminium casting molding that the acidic surface activation treatment is finished carried out vibro-grinding 10 minutes with the tiny grinding medium of diameter, made the surface active layer stable, and increased surface luster, took out and washed with 80 ℃～120 ℃ hot water;
Step 6: drying:
Aluminium behind mechanical polishing is cast shape product dehydration drying;
Step 7: anodizing:
Dried aluminium casting molding is placed in the sulphuric acid soln of the acid element that is added with the solubilized aluminium, and carries out anodizing, make aluminium casting molding surface produce oxide scale film, take out then and wash with electric current answer method;
Step 8: sealing of hole:
Carry out the sealing of hole program with the deionized water of temperature more than 70 ℃, the aluminium casting molding surface oxidation epithelium that anodizing is finished is more stable;
Step 9: drying is finished product:
After the aluminium casting molding washing that sealing of hole is finished, drying is handled, and just finishes all anodizing programs, make the surface of aluminium casting molding produce epithelium against corrosion, and the surface smoothing light is indefectible.
2, aluminum casting profile anode treatment method as claimed in claim 1 is characterized in that:
After the anodizing program of step 7 is finished, can do dyeing according to product demand and handle, after washing, carry out the sealing of hole step then.
3, aluminum casting profile anode treatment method as claimed in claim 1 is characterized in that:
The aluminium of step 2 casting molding soak time be 1～5 minute to remove surperficial grease.
4, aluminum casting profile anode treatment method as claimed in claim 1 is characterized in that:
The used deionized water of step 8 is a pure water.
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| CN 03147941 CN1566410A (en) | 2003-06-26 | 2003-06-26 | Method for anode treatment of aluminum casting profile |
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| CN 03147941 CN1566410A (en) | 2003-06-26 | 2003-06-26 | Method for anode treatment of aluminum casting profile |
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Cited By (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100462483C (en) * | 2006-12-21 | 2009-02-18 | 上海交通大学 | Preparing process of anticorrosive coating on surface of aluminium base composite material |
| CN102355965A (en) * | 2009-03-17 | 2012-02-15 | 伊斯帕诺-絮扎公司 | Moulded casing with added piping |
| CN102485967A (en) * | 2010-12-06 | 2012-06-06 | 深圳市鹏桑普太阳能股份有限公司 | Process for preparing continuous anodic oxide film light-absorbing coating |
| CN102634831A (en) * | 2012-05-04 | 2012-08-15 | 东莞市华轩幕墙材料有限公司 | Anodized aluminum plate and preparation technique thereof |
| CN103276431A (en) * | 2013-05-21 | 2013-09-04 | 昆山乙盛机械工业有限公司 | Highlight anodizing process of aluminum product |
| CN103305887A (en) * | 2012-03-13 | 2013-09-18 | 汉达精密电子(昆山)有限公司 | Aluminum alloy surface treatment method and aluminum alloy surface treatment product |
| CN105506706A (en) * | 2016-01-04 | 2016-04-20 | 沈阳建筑大学 | Aluminum alloy anodizing coloring treatment method |
| CN104762632B (en) * | 2015-04-29 | 2017-10-27 | 胡道春 | The method for cleaning surface of aluminum alloy forge piece |
| CN107460519A (en) * | 2017-07-04 | 2017-12-12 | 泰州亚泰金属有限公司 | A kind of process of surface treatment of aluminum products |
| CN107761149A (en) * | 2017-09-29 | 2018-03-06 | 昌宏精密刀具（东莞）有限公司 | A kind of minute surface anode fabrication method of suitable dyeing |
| CN109514174A (en) * | 2011-09-30 | 2019-03-26 | 苹果公司 | Laser-graining and anodized surface processing |
| CN112160005A (en) * | 2020-10-27 | 2021-01-01 | 苏州东盺金属科技有限公司 | Aluminum alloy anodic oxidation surface treatment method |
| CN112210808A (en) * | 2020-09-29 | 2021-01-12 | 九牧厨卫股份有限公司 | Preparation method of black film |
| CN112575361A (en) * | 2019-09-30 | 2021-03-30 | S-连接株式会社 | Double plating method for aluminum alloy |
| CN112725860A (en) * | 2021-01-16 | 2021-04-30 | 郝云霞 | Simple micro-arc oxidation aluminum material treatment method |
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2003
- 2003-06-26 CN CN 03147941 patent/CN1566410A/en active Pending
Cited By (21)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100462483C (en) * | 2006-12-21 | 2009-02-18 | 上海交通大学 | Preparing process of anticorrosive coating on surface of aluminium base composite material |
| CN102355965A (en) * | 2009-03-17 | 2012-02-15 | 伊斯帕诺-絮扎公司 | Moulded casing with added piping |
| CN102355965B (en) * | 2009-03-17 | 2014-09-03 | 伊斯帕诺-絮扎公司 | Moulded casing with added piping |
| CN102485967A (en) * | 2010-12-06 | 2012-06-06 | 深圳市鹏桑普太阳能股份有限公司 | Process for preparing continuous anodic oxide film light-absorbing coating |
| CN109514174A (en) * | 2011-09-30 | 2019-03-26 | 苹果公司 | Laser-graining and anodized surface processing |
| CN103305887A (en) * | 2012-03-13 | 2013-09-18 | 汉达精密电子(昆山)有限公司 | Aluminum alloy surface treatment method and aluminum alloy surface treatment product |
| CN103305887B (en) * | 2012-03-13 | 2016-06-29 | 汉达精密电子(昆山)有限公司 | Aluminium alloy surface treatment method and products thereof |
| CN102634831A (en) * | 2012-05-04 | 2012-08-15 | 东莞市华轩幕墙材料有限公司 | Anodized aluminum plate and preparation technique thereof |
| CN102634831B (en) * | 2012-05-04 | 2016-08-17 | 东莞市创星自动化科技有限公司 | A kind of anodic oxidation aluminium sheet and preparation technology thereof |
| CN103276431A (en) * | 2013-05-21 | 2013-09-04 | 昆山乙盛机械工业有限公司 | Highlight anodizing process of aluminum product |
| CN103276431B (en) * | 2013-05-21 | 2015-08-26 | 昆山乙盛机械工业有限公司 | Aluminum products height light anodic process |
| CN104762632B (en) * | 2015-04-29 | 2017-10-27 | 胡道春 | The method for cleaning surface of aluminum alloy forge piece |
| CN105506706B (en) * | 2016-01-04 | 2018-01-19 | 沈阳建筑大学 | A kind of aluminium alloy anode oxide coloring treatment process |
| CN105506706A (en) * | 2016-01-04 | 2016-04-20 | 沈阳建筑大学 | Aluminum alloy anodizing coloring treatment method |
| CN107460519A (en) * | 2017-07-04 | 2017-12-12 | 泰州亚泰金属有限公司 | A kind of process of surface treatment of aluminum products |
| CN107761149A (en) * | 2017-09-29 | 2018-03-06 | 昌宏精密刀具（东莞）有限公司 | A kind of minute surface anode fabrication method of suitable dyeing |
| CN112575361A (en) * | 2019-09-30 | 2021-03-30 | S-连接株式会社 | Double plating method for aluminum alloy |
| CN112210808A (en) * | 2020-09-29 | 2021-01-12 | 九牧厨卫股份有限公司 | Preparation method of black film |
| CN112210808B (en) * | 2020-09-29 | 2021-09-17 | 九牧厨卫股份有限公司 | Preparation method of black film |
| CN112160005A (en) * | 2020-10-27 | 2021-01-01 | 苏州东盺金属科技有限公司 | Aluminum alloy anodic oxidation surface treatment method |
| CN112725860A (en) * | 2021-01-16 | 2021-04-30 | 郝云霞 | Simple micro-arc oxidation aluminum material treatment method |
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