CN103014735A - Film stripping method for stripping titanium alloy anode oxide film - Google Patents
Film stripping method for stripping titanium alloy anode oxide film Download PDFInfo
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- CN103014735A CN103014735A CN2012105129058A CN201210512905A CN103014735A CN 103014735 A CN103014735 A CN 103014735A CN 2012105129058 A CN2012105129058 A CN 2012105129058A CN 201210512905 A CN201210512905 A CN 201210512905A CN 103014735 A CN103014735 A CN 103014735A
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Abstract
The invention discloses a film stripping method for stripping a titanium alloy anode oxide film. Film stripping liquid is prepared from sodium tartrate and sodium hydroxide. By adopting the film stripping method, the defects that the existing film stripping liquid contains toxic and harmful substances and unstable ingredients are solved; use of hydrofluoric acid in the film stripping process can be avoided; meanwhile, use of nitric acid and hydrogen peroxide is also avoided, and the film stripping method is the stripping method of a green environment-friendly titanium alloy anode oxide film of which the film stripping liquid is easy to prepare and the ingredients are stable.
Description
Technical field
The invention belongs to field of metal surface treatment technology, more particularly relate to a kind of membrane method that moves back for the stripping titanium alloy anodic oxide film.
Background technology
Anodic oxidation is a kind of traditional process for modifying surface, is about to metal or alloy and places suitable electrolytic solution as the anode processing of switching on, and makes the electrochemical oxidation method of its Surface Creation sull.Adopt this technology that titanium alloy is carried out surface treatment, at its Surface Creation one deck oxidation titanium film, can greatly improve the performance of corrosion-resistant, wear-resistant, the heat shock resistance of titanium alloy, have wide application prospects in fields such as Aeronautics and Astronautics, machinery, electronics, decorations.In process of production, when can't meet the quality requirement of anode oxide film, if re-start anodic oxidation treatment after anode oxide film being removed, the rate of reducing the number of rejects and seconds can save material.At present, all contain hydrofluoric acid (HF) or fluorion (F in the stripping solution of titanium alloy anodic oxide film
-).Fluorion energy dissolved oxygen film is removed rapidly rete up hill and dale.But hydrofluoric acid and fluorion have intense stimulus and corrodibility to skin, and human body and environment are had very large harm.And in the acid stripping of this kind liquid, hydrogen very easily infiltrates in the titanium alloy, causes titanium alloy to produce hydrogen embrittlement.The hydrogen peroxide of invention-sodium hydroxide system meet environmental requirement, but the dioxygen water electrode is unstable as the main component of moving back film liquid recently, is unfavorable for that operation and solution composition detect, and have increased the process costs that moves back film.
Summary of the invention
The objective of the invention is to propose a kind of membrane method that moves back of titanium alloy anodic oxide film, of the present inventionly move back film lyolysis existing the moving back of having determined and contain poisonous and harmful substances and the unsettled defective of composition in the film liquid, adopt the present invention to move back film liquid titanium alloy anodic oxide film is moved back the film processing, can avoid the use of hydrofluoric acid in moving back membrane process, simultaneously also having avoided the use of nitric acid, hydrogen peroxide, is a kind ofly to move back that coating solution is easily prepared, the stripping method of the environmental protection titanium alloy anodic oxide film of stable components.
Technical scheme of the present invention is as follows:
The first step: film liquid is moved back in preparation: sodium tartrate 140～160g/L, sodium hydroxide 20～40g/L.
Second step: the titanium alloy exemplar that will contain anode oxide film fills extension;
The 3rd step: with its suspension put into 70～90 ℃ move back film liquid, constantly observe the variation on exemplar surface, soak 15～30min and can obviously observe rete and substantially come off, metallic matrix appears rear taking-up;
The 4th goes on foot: the exemplar after processing through the 3rd step is placed on carries out in the deionized water taking out behind ultrasonic cleaning 3～5min, use deionized water rinsing again; Adopt blower to dry up through the exemplar after the deionization flushing.
The coating solution that moves back of the present invention is that to use be to use the sodium tartrate that titanium is played strong complexing action to replace hydrofluoric acid, particularly fluorion in the existing conventional techniques; Sodium hydroxide provides the main component of alkaline environment, oxide film is played the effect of dissolving and peeling off.The combination of using sodium tartrate and sodium hydroxide replaces the stripping that environmentally harmful hydrofluoric acid carries out titanium alloy anodic oxide film, is a kind for the treatment of solution of environmental protection.The present invention moves back that coating solution is nontoxic, stable components, can strip underproof titanium alloy anodic oxide film fully, and the front rete of the rete that forms of two-step anodization and strip not is the same, smooth surface, color even.
Description of drawings
The TA15 titanium alloy moves back (A) before the film, moves back (B) behind the film and the outward appearance photo of (C) after the anodic oxidation again among Fig. 1 embodiment 1;
The TA15 titanium alloy moves back (A) before the film, moves back (B) behind the film and the outward appearance photo of (C) after the anodic oxidation again among Fig. 2 embodiment 2;
The TB6 titanium alloy moves back (A) before the film, moves back (B) behind the film and the outward appearance photo of (C) after the anodic oxidation again among Fig. 3 embodiment 3;
The TB6 titanium alloy moves back (A) before the film, moves back (B) behind the film and the outward appearance photo of (C) after the anodic oxidation again among Fig. 4 embodiment 4.
Embodiment
The present invention is described in further detail below in conjunction with drawings and Examples.
Embodiment 1:
The TA15 titanium alloy anodic oxide film is moved back film to be processed
The first step: film liquid is moved back in preparation: sodium tartrate 160g/L, sodium hydroxide 40g/L.
Second step: the titanium alloy exemplar that will contain anode oxide film fills extension;
The 3rd step: with its suspension put into 70 ℃ move back film liquid, soak 15min and can see obviously that rete comes off substantially, metallic matrix appears rear taking-up;
The 4th goes on foot: the exemplar after processing through the 3rd step is placed on carries out in the deionized water taking out behind the ultrasonic cleaning 5min, use deionized water rinsing again; Adopt blower to dry up through the exemplar after the deionization flushing.
With the outward appearance photo contrast before and after moving back film through the above-mentioned TA15 titanium alloy that moves back the film processing, Figure 1A moves back the front outward appearance photo of film, can find out that from photo the TA15 titanium alloy anodic oxide film is yellow, and is evenly good; Through moving back after film processes, shown in Figure 1B, the matrix that moves back behind the film is smooth smooth on macro-scale, adopts om observation, and the anode oxide film 95% or more strips; Exemplar after processing is carried out the anodic oxidation plated film again, and shown in Fig. 1 C, the rete of formation is the same with rete before the strip not, and film forming be yellow, and is well even.
Embodiment 2:
TA15 Ti-alloy anode oxygen film is moved back film to be processed
The first step: film liquid is moved back in preparation: sodium tartrate 140～160g/L, sodium hydroxide 20～40g/L.
Second step: the TA15 titanium alloy exemplar that will contain anode oxide film fills extension;
The 3rd step: with its suspension put into 70 ℃ move back film liquid, soak 20min and can see obviously that the rete metallic matrix that substantially comes off appears rear taking-up;
The 4th goes on foot: the exemplar after processing through the 3rd step is placed on carries out in the deionized water taking out behind the ultrasonic cleaning 5min, use deionized water rinsing again; Adopt blower to dry up through the exemplar after the deionization flushing.
With the outward appearance photo contrast before and after moving back film through the above-mentioned TA15 titanium alloy that moves back the film processing, Fig. 2 A moves back the front outward appearance photo of film, can find out that from photo the TA15 titanium alloy anodic oxide film is yellow, and is evenly good; Through moving back after film processes, shown in Fig. 2 B, the matrix that moves back behind the film is smooth smooth on macro-scale, adopts om observation, and the anode oxide film 95% or more strips; Exemplar after processing is carried out the anodic oxidation plated film again, and shown in Fig. 3 C, the rete of formation is the same with rete before the strip not, and film forming be yellow, and is well even.
Embodiment 3:
The TB6 titanium alloy anodic oxide film is moved back film to be processed
The first step: film liquid is moved back in preparation: sodium tartrate 140g/L, sodium hydroxide 20g/L.
Second step: the TB6 titanium alloy exemplar that will contain anode oxide film fills extension;
The 3rd step: with its suspension put into 90 ℃ move back film liquid, soak 30min and can see obviously that the rete metallic matrix that substantially comes off appears rear taking-up;
The 4th goes on foot: the exemplar after processing through the 3rd step is placed on carries out in the deionized water taking out behind the ultrasonic cleaning 3min, use deionized water rinsing again; Adopt blower to dry up through the exemplar after the deionization flushing.
With the outward appearance photo contrast before and after moving back film through the above-mentioned TB6 titanium alloy that moves back the film processing, Fig. 3 A moves back the front outward appearance photo of film, can find out that from photo the TB6 titanium alloy anodic oxide film is yellow, and is evenly good; Through moving back after film processes, shown in Fig. 3 B, the matrix that moves back behind the film is smooth smooth on macro-scale, adopts om observation, and the anode oxide film 95% or more strips; Exemplar after processing is carried out the anodic oxidation plated film again, and shown in Fig. 3 C, the rete of formation is the same with rete before the strip not, and film forming be yellow, and is well even.
Embodiment 4:
The TB6 titanium alloy anodic oxide film is moved back film to be processed
The first step: film liquid is moved back in preparation: sodium tartrate 150g/L g/L, sodium hydroxide 30g/L.
Second step: the TB6 titanium alloy exemplar that will contain anode oxide film fills extension;
The 3rd step: with its suspension put into 80 ℃ move back film liquid, soak 25min and can see obviously that the rete metallic matrix that substantially comes off appears rear taking-up;
The 4th goes on foot: the exemplar after processing through the 3rd step is placed on carries out in the deionized water taking out behind ultrasonic cleaning 3～5min, use deionized water rinsing again; Adopt blower to dry up through the exemplar after the deionization flushing.
With the outward appearance photo contrast before and after moving back film through the above-mentioned TB6 titanium alloy that moves back the film processing, Fig. 4 A moves back the front outward appearance photo of film, can find out that from photo the TB6 titanium alloy anodic oxide film is yellow, and is evenly good; Through moving back after film processes, shown in Fig. 4 B, the matrix that moves back behind the film is smooth smooth on macro-scale, adopts om observation, and the anode oxide film 95% or more strips; Exemplar after processing is carried out the anodic oxidation plated film again, and shown in Fig. 4 C, the rete of formation is the same with rete before the strip not, and film forming is yellow, evenly not well.
Claims (1)
1. the membrane method that moves back that is used for the stripping titanium alloy anodic oxide film is characterized in that, comprises following treatment step:
The first step: film liquid is moved back in preparation: sodium tartrate 140～160g/L, sodium hydroxide 20～40g/L.
Second step: the titanium alloy exemplar that will contain anode oxide film fills extension;
The 3rd step: with its suspension put into 70～90 ℃ move back film liquid, constantly observe the variation on exemplar surface, soak 15～30min and can obviously observe rete and substantially come off, metallic matrix appears rear taking-up;
The 4th goes on foot: the exemplar after processing through the 3rd step is placed on carries out in the deionized water taking out behind ultrasonic cleaning 3～5min, use deionized water rinsing again; Adopt blower to dry up through the exemplar after the deionization flushing.
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103305855A (en) * | 2013-06-06 | 2013-09-18 | 北京航空航天大学 | Energy-saving and environment-friendly aluminum alloy anode oxide film stripping process |
| CN104018170A (en) * | 2014-05-29 | 2014-09-03 | 东风汽车紧固件有限公司 | Low-temperature environment-friendly chromium-free phosphating-film-removing agent |
| CN105256317A (en) * | 2015-10-27 | 2016-01-20 | 苏州市海岸钛业股份有限公司 | Titanium chip alkaline etching and smoothing process |
| CN107974687A (en) * | 2017-10-24 | 2018-05-01 | 广东富行洗涤剂科技有限公司 | It is a kind of to take off mould agent for glass vacuum coating mould |
| CN109957830A (en) * | 2017-12-25 | 2019-07-02 | 比亚迪股份有限公司 | A kind of strip method of positive pole oxidation film on aluminum alloy surface decoating liquid and positive pole oxidation film on aluminum alloy surface |
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| CN101661230A (en) * | 2009-09-24 | 2010-03-03 | 项建龙 | Grinding technique for aluminum alloy drum of external-drum type plate-making machine |
| CN101717945A (en) * | 2009-12-24 | 2010-06-02 | 浙江今飞机械集团有限公司 | Method for pretreating motorbike hub |
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2012
- 2012-12-04 CN CN2012105129058A patent/CN103014735A/en active Pending
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| FR2587354A1 (en) * | 1985-09-16 | 1987-03-20 | Gouttes Michel | Degreasing cleaning product for industrial and domestic use, and process for manufacturing the said product |
| CN101245467A (en) * | 2008-03-21 | 2008-08-20 | 北京航空航天大学 | Stripping liquid and stripping method for stripping titanium and titanium alloy anodized film |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103305855A (en) * | 2013-06-06 | 2013-09-18 | 北京航空航天大学 | Energy-saving and environment-friendly aluminum alloy anode oxide film stripping process |
| CN103305855B (en) * | 2013-06-06 | 2015-04-08 | 北京航空航天大学 | Energy-saving and environment-friendly aluminum alloy anode oxide film stripping process |
| CN104018170A (en) * | 2014-05-29 | 2014-09-03 | 东风汽车紧固件有限公司 | Low-temperature environment-friendly chromium-free phosphating-film-removing agent |
| CN105256317A (en) * | 2015-10-27 | 2016-01-20 | 苏州市海岸钛业股份有限公司 | Titanium chip alkaline etching and smoothing process |
| CN107974687A (en) * | 2017-10-24 | 2018-05-01 | 广东富行洗涤剂科技有限公司 | It is a kind of to take off mould agent for glass vacuum coating mould |
| CN109957830A (en) * | 2017-12-25 | 2019-07-02 | 比亚迪股份有限公司 | A kind of strip method of positive pole oxidation film on aluminum alloy surface decoating liquid and positive pole oxidation film on aluminum alloy surface |
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Application publication date: 20130403 |