CN1757794A - Chemical etching preparation technology of titanium alloy and etching agent used in said technology - Google Patents
Chemical etching preparation technology of titanium alloy and etching agent used in said technology Download PDFInfo
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- CN1757794A CN1757794A CN 200510115277 CN200510115277A CN1757794A CN 1757794 A CN1757794 A CN 1757794A CN 200510115277 CN200510115277 CN 200510115277 CN 200510115277 A CN200510115277 A CN 200510115277A CN 1757794 A CN1757794 A CN 1757794A
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Abstract
A process for preparing pinholes, pattern, or holes on the surface of Ti-alloy by chemical etching includes such steps as washing the Ti-alloy workpiece for removing oil, spraying a plastic protecting layer, carving pinholes, preparing the etching liquid from nitric acid and hydrofluoric acid through proportional mixing, chemical etching to form the pinholes, and removing said plastic protecting layer.
Description
Technical field
The present invention relates to a kind of chemical etching process and the used etching agent of this technology of titanium alloy.
Background technology
The method of existing manufacturing titanium alloy porous surface layer, make methods such as titanium bead layer, plasma spray coating-Ti alloy microvoid structure as sintering process, all need titanium alloy substrate is carried out pyroprocessing, but pyroprocessing can change the crystalline structure of titanium alloy, thereby reduce the fatigue strength of matrix, shortened the work-ing life of titanium alloy workpiece.
Summary of the invention
At the problems referred to above, the pattern that the object of the present invention is to provide a kind of matrix to need not pyroprocessing, simple and reliable process, low production cost, micropore and decorative pattern can accurately design, the chemical milling preparation technology and the used etching agent of this technology of the bright and clean titanium alloy attractive in appearance of product.
For achieving the above object, technical solution of the present invention is:
A kind of chemical milling preparation technology of titanium alloy, this technology may further comprise the steps:
(1) titanium alloy workpiece is cleaned oil removing;
(2) at described titanium alloy workpiece surface spraying plastic protective layer;
(3) on described plastic protective layer, carve out micropore;
(4) the above-mentioned micropore of chemical corrosion: the titanium alloy workpiece that is carved with micropore on the above-mentioned plastic protective layer is immersed in the mixed acid solution of nitric acid and hydrofluoric acid; the titanium alloy workpiece surface at described micropore place is corroded, thereby on the titanium alloy workpiece surface, etches micropore.
(5) remove remaining plastic protective film for plastics.
Further, described plastic protective layer is Resins, epoxy or furane resin or tetrafluoroethylene.
Further, the thickness of described plastic protective layer is the 50-70 micron.
Further, described mixed acid solution be weight content be the nitric acid of 20-50% and hydrofluoric acid that weight content is 3-15% by 1: 1.0-1: 3 volume ratio mixes.
Further, the temperature of described mixed acid solution is 35-50 ℃.
Further, the degree of depth of the micropore decorative pattern on described titanium alloy workpiece surface is the 200-500 micron.
Further, the micropore on described titanium alloy workpiece surface is the through hole that penetrates this workpiece.
Further, in described step (five), the described titanium alloy workpiece that etches behind the micropore decorative pattern is put into plastic containers, pour acid plastic coating remover into, soak the back, brush remaining plastic protective layer with iron then, use flushing with clean water again with the flushing of diluted alkaline water.
A kind of aforesaid right requires the used etching agent of arbitrary method in 1 to 8, it is characterized in that, described etching agent be weight content be the nitric acid of 20-50% and hydrofluoric acid that weight content is 3-15% by 1: 1.0-1: 3 volume ratio is mixed the mixed solution that obtains.
After adopting above-mentioned technology, in etching process, titanium alloy workpiece does not need pyroprocessing, and technology is easy to be reliable, and the micropore of being carved and the pattern of decorative pattern can accurately design, and low production cost, product are bright and clean attractive in appearance; In addition, since described etching agent is a weight content be the nitric acid of 20-50% and hydrofluoric acid that weight content is 3-15% by 1: 1.0-1: 3 volume ratio is mixed the mixed solution that obtains, the mixed solution corrosion speed of this concentration is fast, mixed solution need not heat up too high, get final product a little more than normal temperature, therefore very little to the performance impact of titanium alloy workpiece; Adopt above-mentioned technology, the floral designs that can be needed arbitrarily on the titanium alloy workpiece surface; In addition, because making titanium alloy workpiece add trade union with machining process commonly used, the special crystalline structure of titanium alloy influences its mechanical property, adopt above-mentioned preparation technology to increase etching period or then can obtain through hole, solved the problem of processing through hole on titanium alloy workpiece in the etchings simultaneously of the obverse same position of two of titanium alloy workpieces.
Embodiment:
Embodiment 1
The chemical milling preparation technology of titanium alloy of the present invention comprises following process:
(1) the cleaning oil removing of workpiece: solid and reliable for the plastic protective layer that makes titanium alloy workpiece surface spraying, workpiece need clean through caustic liquor, uses flushing with clean water again, seasoning then after thoroughly removing surface and oil contaminant;
(2) spraying plastic protective layer: with the powder spraying machine Resins, epoxy is sprayed on the titanium alloy workpiece surface for the treatment of that etched above-mentioned cleaning is crossed, coating thickness is the 50-70 micron;
(3) use laser engraving machine, according to the decorative pattern that designs, on the plastic protective layer on titanium alloy workpiece surface, get decorative pattern, make the plastic protective layer of decorative pattern part remove the formation micropore, countless micropores form the decorative pattern that designs, make the titanium alloy workpiece matrix expose out, on plastic protective layer, carve out the decorative pattern micropore so that chemical milling;
(4) chemical milling micropore: be 65% nitric acid (HNO with weight content
3) be 20% with distilled water diluting, with weight content is that 40% hydrofluoric acid (HF) is 7% with distilled water diluting, nitric acid with above-mentioned 20% and 6% hydrofluoric acid are mixing in 1: 1.5 by volume, promptly obtain mixing acid, the titanium alloy workpiece that is carved with the micropore floral designs on the above-mentioned plastic protective layer is immersed in the described mixing acid, make the temperature of mixing acid remain on 35 ℃, can on the titanium alloy workpiece surface, etch the micropore decorative pattern through 12 minutes, the degree of depth of decorative pattern depends on etching period, time is long more, the degree of depth is dark more, the degree of depth of decorative pattern generally is controlled at the 200-500 micron, and the workpiece after the etching is used flushing with clean water immediately;
(5) remove plastic protective film for plastics: the workpiece after the above-mentioned etching is put into plastic containers; pour acid plastic coating remover into; this acidity plastic coating remover is that Beijing Ai Ersimu company produces; soaked 5-10 minute; after the flushing of diluted alkaline water; brush remaining plastic protective layer with iron, use flushing with clean water again, change the clean room after the seasoning over to.
Embodiment 2
The chemical milling preparation technology of titanium alloy of the present invention comprises following process:
(1) the cleaning oil removing of workpiece;
(2) spraying plastic protective layer: with the powder spraying machine Resins, epoxy is sprayed on the titanium alloy workpiece surface for the treatment of that etched above-mentioned cleaning is crossed, coating thickness is the 50-70 micron;
(3) use laser engraving machine, according to the decorative pattern that designs, on the plastic protective layer on titanium alloy workpiece surface, get decorative pattern, make the plastic protective layer of decorative pattern part remove the formation micropore, make the titanium alloy workpiece matrix expose out, on plastic protective layer, carve out the decorative pattern micropore so that chemical milling;
(4) chemical milling micropore: be 65% nitric acid (HNO with weight content
3) be 50% with distilled water diluting, with weight content is that 40% hydrofluoric acid (HF) is 12% with distilled water diluting, nitric acid with above-mentioned 50% and 12% hydrofluoric acid are mixing in 1: 2 by volume, promptly obtain mixing acid, mixing acid is sprayed on the titanium alloy workpiece that is carved with the micropore floral designs on the above-mentioned plastic protective layer, the temperature of mixing acid is remained on about 40 ℃, can on the titanium alloy workpiece surface, etch the micropore decorative pattern through 8 minutes, the degree of depth of decorative pattern depends on etching period, time is long more, the degree of depth is dark more, the degree of depth of decorative pattern generally is controlled at the 200-500 micron, and the workpiece after the etching is used flushing with clean water immediately;
(5) remove plastic protective film for plastics: the workpiece after the above-mentioned etching is put into plastic containers; pour acid plastic coating remover into; this acidity plastic coating remover is that Beijing Ai Ersimu company produces; soaked 5-10 minute; after the flushing of diluted alkaline water; brush remaining plastic protective layer with iron, use flushing with clean water again, change the clean room after the seasoning over to.
Embodiment 3
The chemical milling preparation technology of titanium alloy of the present invention comprises following process:
(1) the cleaning oil removing of workpiece;
(2) spraying plastic protective layer: with the powder spraying machine tetrafluoroethylene is sprayed on the titanium alloy workpiece surface for the treatment of that etched above-mentioned cleaning is crossed, coating thickness is the 50-70 micron;
(3) use laser engraving machine, according to the decorative pattern that designs, on the plastic protective layer on titanium alloy workpiece surface, get decorative pattern, make the plastic protective layer of decorative pattern part remove the formation micropore, make the titanium alloy workpiece matrix expose out, on plastic protective layer, carve out the decorative pattern micropore so that chemical milling;
(4) chemical milling micropore: be 65% nitric acid (HNO with weight content
3) be 30% with distilled water diluting, with weight content is that 40% hydrofluoric acid (HF) is 10% with distilled water diluting, nitric acid with above-mentioned 30% and 10% hydrofluoric acid are mixing in 1: 3 by volume, promptly obtain mixing acid, the titanium alloy workpiece that is carved with the micropore floral designs on the above-mentioned plastic protective layer is immersed in the described mixing acid, the temperature of mixing acid is remained on about 36 ℃, can on the titanium alloy workpiece surface, etch the micropore decorative pattern through 10 minutes, the degree of depth of decorative pattern depends on etching period, time is long more, the degree of depth is dark more, the degree of depth of decorative pattern generally is controlled at the 200-500 micron, and the workpiece after the etching is used flushing with clean water immediately;
(5) remove plastic protective film for plastics: the workpiece after the above-mentioned etching is put into plastic containers; pour acid plastic coating remover into; this acidity plastic coating remover is that Beijing Ai Ersimu company produces; soaked 5-10 minute; after the flushing of diluted alkaline water; brush remaining plastic protective layer with iron, use flushing with clean water again, change the clean room after the seasoning over to.
In addition, in above-mentioned technological process, the floral designs that can be needed arbitrarily on the titanium alloy workpiece surface, and then can obtain through hole during the etching period sufficiently long or in two obverse same position etchings simultaneously of titanium alloy workpiece, solved the problem of processing through hole on titanium alloy workpiece.
Claims (9)
1, a kind of chemical milling preparation technology of titanium alloy is characterized in that, this technology may further comprise the steps:
(1) titanium alloy workpiece is cleaned oil removing;
(2) at described titanium alloy workpiece surface spraying plastic protective layer;
(3) on described plastic protective layer, carve out micropore;
(4) the above-mentioned micropore of chemical corrosion: the titanium alloy workpiece that is carved with micropore on the above-mentioned plastic protective layer is immersed in the mixed acid solution of nitric acid and hydrofluoric acid; the titanium alloy workpiece surface at described micropore place is corroded, thereby on the titanium alloy workpiece surface, etches micropore.
(5) remove remaining plastic protective film for plastics.
2, the chemical milling preparation technology of titanium alloy as claimed in claim 1 is characterized in that, described plastic protective layer is Resins, epoxy or furane resin or tetrafluoroethylene.
3, the chemical milling preparation technology of titanium alloy as claimed in claim 2 is characterized in that, the thickness of described plastic protective layer is the 50-70 micron.
4, the chemical milling preparation technology of titanium alloy as claimed in claim 1 is characterized in that, described mixed acid solution be weight content be the nitric acid of 20-50% and hydrofluoric acid that weight content is 3-15% by 1: 1.0-1: 3 volume ratio mixes.
5, the chemical milling preparation technology of titanium alloy as claimed in claim 1 is characterized in that, the temperature of described mixed acid solution is 35-50 ℃.
6, the chemical milling preparation technology of titanium alloy as claimed in claim 1 is characterized in that, the degree of depth of the micropore decorative pattern on described titanium alloy workpiece surface is the 200-500 micron.
7, the chemical milling preparation technology of titanium alloy as claimed in claim 1 is characterized in that, the micropore on described titanium alloy workpiece surface is the through hole that penetrates this workpiece.
8, the chemical milling preparation technology of titanium alloy as claimed in claim 1; it is characterized in that; in described step (five); the described titanium alloy workpiece that etches behind the micropore decorative pattern is put into plastic containers; pour acid plastic coating remover into; soak the back with the flushing of diluted alkaline water, brush remaining plastic protective layer with iron then, use flushing with clean water again.
9, a kind of aforesaid right requires the used etching agent of arbitrary method in 1 to 8, it is characterized in that, described etching agent be weight content be the nitric acid of 20-50% and hydrofluoric acid that weight content is 3-15% by 1: 1.0-1: 3 volume ratio is mixed the mixed solution that obtains.
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| Application Number | Priority Date | Filing Date | Title |
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| CN 200510115277 CN1757794A (en) | 2005-11-15 | 2005-11-15 | Chemical etching preparation technology of titanium alloy and etching agent used in said technology |
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| CN 200510115277 CN1757794A (en) | 2005-11-15 | 2005-11-15 | Chemical etching preparation technology of titanium alloy and etching agent used in said technology |
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| CN1757794A true CN1757794A (en) | 2006-04-12 |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103147077A (en) * | 2013-03-20 | 2013-06-12 | 沈阳飞机工业（集团）有限公司 | Titanium alloy sawtooth-shaped shallow step precision chemical milling fluid and process thereof |
| CN105039983A (en) * | 2015-06-30 | 2015-11-11 | 珠海保税区摩天宇航空发动机维修有限公司 | Aeroengine titanium alloy hub surface oxidation and residual silver removal technology |
| WO2016101706A1 (en) * | 2014-12-25 | 2016-06-30 | 比亚迪股份有限公司 | Metal-resin composite and preparation method thereof and electronic product housing |
| CN109248935A (en) * | 2018-09-11 | 2019-01-22 | 山东大学 | The processing technology of cellular profile in a kind of band |
| CN112209334A (en) * | 2020-10-13 | 2021-01-12 | 深圳迪致科技术有限公司 | Micropore preparation method |
-
2005
- 2005-11-15 CN CN 200510115277 patent/CN1757794A/en active Pending
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103147077A (en) * | 2013-03-20 | 2013-06-12 | 沈阳飞机工业（集团）有限公司 | Titanium alloy sawtooth-shaped shallow step precision chemical milling fluid and process thereof |
| CN103147077B (en) * | 2013-03-20 | 2015-04-08 | 沈阳飞机工业（集团）有限公司 | Titanium alloy sawtooth-shaped shallow step precision chemical milling fluid and process thereof |
| WO2016101706A1 (en) * | 2014-12-25 | 2016-06-30 | 比亚迪股份有限公司 | Metal-resin composite and preparation method thereof and electronic product housing |
| CN105039983A (en) * | 2015-06-30 | 2015-11-11 | 珠海保税区摩天宇航空发动机维修有限公司 | Aeroengine titanium alloy hub surface oxidation and residual silver removal technology |
| CN105039983B (en) * | 2015-06-30 | 2017-07-28 | 珠海保税区摩天宇航空发动机维修有限公司 | The removal technique of aero-engine titanium alloy hub surface oxidation and remaining silver |
| CN109248935A (en) * | 2018-09-11 | 2019-01-22 | 山东大学 | The processing technology of cellular profile in a kind of band |
| CN112209334A (en) * | 2020-10-13 | 2021-01-12 | 深圳迪致科技术有限公司 | Micropore preparation method |
| CN112209334B (en) * | 2020-10-13 | 2024-07-26 | 深圳迪致科技术有限公司 | Microporous preparation method |
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Owner name: MENGTAIYIN MEDICAL EQUIPMENT CO., LTD., BEIJING Free format text: FORMER OWNER: BEIJING YINPULAN SCIENCE + TECHNOLOGY DEVELOPMENT CO., LTD. Effective date: 20061229 |
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Effective date of registration: 20061229 Address after: 102200, Beijing Changping science and Technology Park, super Road, No. 12 Applicant after: Beijing Montagne Medical Device Co., Ltd. Address before: 102200, Beijing Changping science and Technology Park, super Road, No. 12 Applicant before: Beijing Yinpulan Technology Development Co., Ltd. |
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