CN109175368A - A kind of cleaning method of selective laser fusing forming alloy complex inner cavity - Google Patents
A kind of cleaning method of selective laser fusing forming alloy complex inner cavity Download PDFInfo
- Publication number
- CN109175368A CN109175368A CN201811270755.8A CN201811270755A CN109175368A CN 109175368 A CN109175368 A CN 109175368A CN 201811270755 A CN201811270755 A CN 201811270755A CN 109175368 A CN109175368 A CN 109175368A
- Authority
- CN
- China
- Prior art keywords
- cleaning
- inner cavity
- selective laser
- laser fusing
- fusing forming
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
- B22F10/00—Additive manufacturing of workpieces or articles from metallic powder
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
- B22F10/00—Additive manufacturing of workpieces or articles from metallic powder
- B22F10/20—Direct sintering or melting
- B22F10/28—Powder bed fusion, e.g. selective laser melting [SLM] or electron beam melting [EBM]
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
- B22F10/00—Additive manufacturing of workpieces or articles from metallic powder
- B22F10/60—Treatment of workpieces or articles after build-up
- B22F10/68—Cleaning or washing
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
- B22F3/00—Manufacture of workpieces or articles from metallic powder characterised by the manner of compacting or sintering; Apparatus specially adapted therefor ; Presses and furnaces
- B22F3/24—After-treatment of workpieces or articles
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
- B22F3/00—Manufacture of workpieces or articles from metallic powder characterised by the manner of compacting or sintering; Apparatus specially adapted therefor ; Presses and furnaces
- B22F3/24—After-treatment of workpieces or articles
- B22F2003/247—Removing material: carving, cleaning, grinding, hobbing, honing, lapping, polishing, milling, shaving, skiving, turning the surface
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P10/00—Technologies related to metal processing
- Y02P10/25—Process efficiency
Abstract
A kind of cleaning method of selective laser fusing forming alloy complex inner cavity is the blowing that (1) carries out floating powder to the inner cavity of the component of selective laser fusing forming including step；(2) cleaning solution and neutralizer are configured；(3) cleaning solution is poured into and carries out pickling in element cavity；(4) neutralizer is poured into and carries out alkali cleaning in element cavity；(5) clear water is poured into element cavity and is cleaned；(6) inner cavity is dried up, completes cleaning.The Structure adaptation of such technique is good, and the cleaning for the inner-cavity structure that the techniques such as various mechanical grindings, blast can not clear up may be implemented.The cleaning solution and neutralizer of use are the preferable liquid of mobility, are easier to clear up after cleaning, will not leave behind residue.Such technique cleaning efficiency is high, can realize the cleaning of complex component in a short time.Meanwhile such cleaning process is manufactured without additional Fixture Design.
Description
Technical field
The present invention relates to the cleaning methods that forming alloy complex inner cavity is melted in a kind of selective laser, belong to for increasing material manufacturing
Technical field.
Background technique
It is a kind of increases material manufacturing technology based on powder bed powder laying that forming technique is melted in selective laser, can be complete using such technique
At the entirety manufacture with the complicated inner cavities structure such as inner flow passage.But in the profile scan of selective laser fusing forming process, by
In laser energy be Gaussian Profile, it is lower in the energy density of Laser edge, powder cannot be completely melt, so that drip molding surface
The powder for joining some semi-moltens can be glued.These powder can be removed in outside by physical methods such as polishing or blasts, but for
Complicated inner cavity in component, physical method not can be removed the powder of these viscous connection, these powder, which will become fifth wheel, influences component
Use.
Summary of the invention
Technology of the invention solves the problems, such as: having overcome the deficiencies of the prior art and provide a kind of selective laser fusing forming
Complex-shaped surface mould titanium alloy member inner surface chemical cleaning method realizes the fifth wheels such as such complex component inner surface adhesion powder
It removes.
The technical solution of the invention is as follows:
A kind of cleaning method of selective laser fusing forming alloy complex inner cavity, steps are as follows:
(1) blowing of floating powder is carried out to the inner cavity of the component of selective laser fusing forming；
(2) cleaning solution and neutralizer are configured；
(3) cleaning solution is poured into and carries out pickling in element cavity；
(4) neutralizer is poured into and carries out alkali cleaning in element cavity；
(5) clear water is poured into element cavity and is cleaned；
(6) inner cavity is dried up, completes cleaning.
The blowing of floating powder is carried out using inner cavity of the compressed air to the component of selective laser fusing forming.
The temperature of the compressed air of use is more than dew-point temperature, pressure 0.5-0.8Mpa.
The component of selective laser fusing forming uses titanium alloy material.
For titanium alloy, cleaning solution is mass fraction 15-25%HNO3 and 3-10%HF mixed acid aqueous solution.
For titanium alloy, neutralizer is the NaOH aqueous solution of mass fraction 10-30%.
When cleaning solution pours into progress pickling in element cavity, cleaning solution is poured out after standing 3-5 minutes.
When neutralizer is poured into progress alkali cleaning in element cavity, neutralizer is poured out after standing 10-20 minutes.
Clear water is poured into when being cleaned in element cavity, cleaning inner cavity 3-5 times.
Inner cavity is dried up to complete to clean with compressed air, more than dew-point temperature, pressure is the temperature of compressed air
0.5-0.8Mpa。
Compared with the prior art, the invention has the advantages that:
(1) fusing forming complex-shaped surface mould titanium alloy member inner surface in selective laser is carried out using such chemical cleaning method
Cleaning can obtain good cleaning effect, and the Structure adaptation of such technique is good, and the works such as various mechanical grindings, blast may be implemented
The cleaning for the inner-cavity structure that skill can not clear up.
(2) cleaning solution and neutralizer used in this programme is the preferable liquid of mobility, is easier to after cleaning clear
Reason, will not leave behind residue.
(3) such technique cleaning efficiency is high, can realize the cleaning of complex component in a short time.
(4) such cleaning process is manufactured without additional Fixture Design.
Detailed description of the invention
Fig. 1 is cleaning method flow chart of the present invention；
Fig. 2 is that the method for the present invention is not used to clean schematic diagram under complicated inner cavity microscope；
Fig. 3 is the partial enlarged view of Fig. 2；
Fig. 4 is schematic diagram under complicated inner cavity microscope after being cleaned using the method for the present invention；
Fig. 5 is the partial enlarged view of Fig. 4.
Specific embodiment
The specific embodiment of the invention is further illustrated with reference to the accompanying drawing.
The technical field of the invention is increases material manufacturing technology field, is related to a kind of selective laser fusing forming titanium alloy
Glue the cleaning method of powder in complex-shaped surface mould inner surface of component surface.It is mainly used for aerospace, derived energy chemical field alloy complex
The inner surface of type chamber component glues the cleaning of the fifth wheels such as powder.The method of the present invention carries out the powder of the viscous connection in complicated inner cavity surface clear
Reason, cleaning effect is preferable, and is not limited by cavity shape, and the clear of the complicated inner cavities such as spiral inner flow passage surface can be carried out
Reason.
The embodiment of the present invention realizes the cleaning of complicated inner cavity according to step as shown in Figure 1:
1, the blowing of floating powder, the compression of use are carried out using inner cavity of the compressed air to the component of selective laser fusing forming
The temperature of air is more than dew-point temperature, pressure 0.5-0.8Mpa.
2, cleaning solution and neutralizer are configured, for titanium alloy, cleaning solution is mass fraction 15-25%HNO3And 3-10%HF
Mixed acid aqueous solution, neutralizer are the NaOH aqueous solution of mass fraction 10-30%.
3, cleaning solution is poured into element cavity, pours out cleaning solution after standing 3-5 minutes.
4, neutralizer is poured into element cavity, pours out neutralizer after standing 10-20 minutes.
5, clear water is poured into element cavity, cleaning inner cavity 3-5 times.
6, inner cavity is dried up with compressed air, completes cleaning, the temperature of the compressed air used dew-point temperature with
On, pressure 0.5-0.8Mpa.
The clear of selective laser fusing forming complex-shaped surface mould titanium alloy member inner surface is carried out using such chemical cleaning method
Good cleaning effect can be obtained by washing, and be had the advantage that
The Structure adaptation of such technique is good, and the inner cavity knot that the techniques such as various mechanical grindings, blast can not clear up may be implemented
The cleaning of structure.The cleaning solution and neutralizer of use are the preferable liquid of mobility, are easier to clear up after cleaning, will not leave behind
Residue.Such technique cleaning efficiency is high, can realize the cleaning of complex component in a short time.Meanwhile such cleaning process without
Need additional Fixture Design manufacture.In the prior art, herein situation can not physical cleaning, can be seen that by practical cleaning effect
Advantage of the invention.As shown in Figures 2 and 3 for using the effect before present invention cleaning, it can be seen that be fused into selective laser
It is lower in the energy density of Laser edge since laser energy is Gaussian Profile in the profile scan of shape process, it cannot melt completely
Change powder, so that drip molding surface can glue the powder for joining some semi-moltens.Effect picture after cleaning is as shown in Figure 4 and Figure 5, can
To find out, after the cleaning of the method for the present invention, selective laser fusing shapes the clear of complex-shaped surface mould titanium alloy member inner surface
It washes and achieves good cleaning effect.
The content that description in the present invention is not described in detail belongs to the well-known technique of those skilled in the art.
Claims (10)
1. a kind of cleaning method of selective laser fusing forming alloy complex inner cavity, it is characterised in that steps are as follows:
(1) blowing of floating powder is carried out to the inner cavity of the component of selective laser fusing forming；
(2) cleaning solution and neutralizer are configured；
(3) cleaning solution is poured into and carries out pickling in element cavity；
(4) neutralizer is poured into and carries out alkali cleaning in element cavity；
(5) clear water is poured into element cavity and is cleaned；
(6) inner cavity is dried up, completes cleaning.
2. a kind of cleaning method of selective laser fusing forming alloy complex inner cavity according to claim 1, feature
It is: carries out the blowing of floating powder using inner cavity of the compressed air to the component of selective laser fusing forming.
3. a kind of cleaning method of selective laser fusing forming alloy complex inner cavity according to claim 2, feature
Be: the temperature of the compressed air of use is more than dew-point temperature, pressure 0.5-0.8Mpa.
4. a kind of cleaning method of selective laser fusing forming alloy complex inner cavity according to claim 1, feature
Be: the component of selective laser fusing forming is using titanium alloy material.
5. a kind of cleaning method of selective laser fusing forming alloy complex inner cavity according to claim 1, feature
Be: for titanium alloy, cleaning solution is mass fraction 15-25%HNO3 and 3-10%HF mixed acid aqueous solution.
6. a kind of cleaning method of selective laser fusing forming alloy complex inner cavity according to claim 1, feature
Be: for titanium alloy, neutralizer is the NaOH aqueous solution of mass fraction 10-30%.
7. a kind of cleaning method of selective laser fusing forming alloy complex inner cavity according to claim 1, feature
It is: when cleaning solution pours into progress pickling in element cavity, pours out cleaning solution after standing 3-5 minutes.
8. a kind of cleaning method of selective laser fusing forming alloy complex inner cavity according to claim 1, feature
It is: when neutralizer is poured into progress alkali cleaning in element cavity, pours out neutralizer after standing 10-20 minutes.
9. a kind of cleaning method of selective laser fusing forming alloy complex inner cavity according to claim 1, feature
It is: clear water is poured into when being cleaned in element cavity, cleaning inner cavity 3-5 times.
10. a kind of cleaning method of selective laser fusing forming alloy complex inner cavity according to claim 1, feature
It is: dries up to complete to clean by inner cavity with compressed air, the temperature of compressed air is more than dew-point temperature, pressure 0.5-
0.8Mpa。
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811270755.8A CN109175368A (en) | 2018-10-29 | 2018-10-29 | A kind of cleaning method of selective laser fusing forming alloy complex inner cavity |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811270755.8A CN109175368A (en) | 2018-10-29 | 2018-10-29 | A kind of cleaning method of selective laser fusing forming alloy complex inner cavity |
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| Publication Number | Publication Date |
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| CN109175368A true CN109175368A (en) | 2019-01-11 |
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ID=64944362
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| CN201811270755.8A Pending CN109175368A (en) | 2018-10-29 | 2018-10-29 | A kind of cleaning method of selective laser fusing forming alloy complex inner cavity |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112743848A (en) * | 2020-12-14 | 2021-05-04 | 北京大学 | 3D printing model surface treatment method |
| CN113649598A (en) * | 2021-08-20 | 2021-11-16 | 中北大学 | SLM (selective laser melting) -based surface cleaning treatment method for formed metal and alloy sample thereof |
| CN115122243A (en) * | 2022-07-25 | 2022-09-30 | 西门子燃气轮机部件(江苏)有限公司 | Coating thickness removing method with controllable coating thickness |
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Application publication date: 20190111 |
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