EP2603355A2 - Verfahren und vorrichtung zum entfernen einer schicht von einer oberfläche eines körpers - Google Patents
Verfahren und vorrichtung zum entfernen einer schicht von einer oberfläche eines körpersInfo
- Publication number
- EP2603355A2 EP2603355A2 EP11796609.3A EP11796609A EP2603355A2 EP 2603355 A2 EP2603355 A2 EP 2603355A2 EP 11796609 A EP11796609 A EP 11796609A EP 2603355 A2 EP2603355 A2 EP 2603355A2
- Authority
- EP
- European Patent Office
- Prior art keywords
- particles
- almen
- pressure jet
- layer
- temporarily
- 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.)
- Granted
Links
- 238000000034 method Methods 0.000 title claims abstract description 29
- 239000000463 material Substances 0.000 claims abstract description 26
- 239000002245 particle Substances 0.000 claims abstract description 23
- 238000005422 blasting Methods 0.000 claims abstract description 7
- 239000000919 ceramic Substances 0.000 claims description 5
- 239000003795 chemical substances by application Substances 0.000 claims description 4
- 239000000126 substance Substances 0.000 claims description 4
- 239000011521 glass Substances 0.000 claims description 3
- 150000008044 alkali metal hydroxides Chemical class 0.000 claims description 2
- QCWXUUIWCKQGHC-UHFFFAOYSA-N Zirconium Chemical compound [Zr] QCWXUUIWCKQGHC-UHFFFAOYSA-N 0.000 claims 1
- 229910001854 alkali hydroxide Inorganic materials 0.000 claims 1
- 229910052726 zirconium Inorganic materials 0.000 claims 1
- 239000010410 layer Substances 0.000 description 15
- KWYUFKZDYYNOTN-UHFFFAOYSA-M Potassium hydroxide Chemical compound [OH-].[K+] KWYUFKZDYYNOTN-UHFFFAOYSA-M 0.000 description 4
- 238000000576 coating method Methods 0.000 description 4
- 230000008569 process Effects 0.000 description 4
- 230000008859 change Effects 0.000 description 3
- 238000004140 cleaning Methods 0.000 description 3
- 238000005480 shot peening Methods 0.000 description 3
- 239000012790 adhesive layer Substances 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 230000005855 radiation Effects 0.000 description 2
- 229910000639 Spring steel Inorganic materials 0.000 description 1
- 238000005299 abrasion Methods 0.000 description 1
- 239000003082 abrasive agent Substances 0.000 description 1
- 239000002585 base Substances 0.000 description 1
- 239000011324 bead Substances 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005336 cracking Methods 0.000 description 1
- 230000002950 deficient Effects 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000018109 developmental process Effects 0.000 description 1
- 238000005530 etching Methods 0.000 description 1
- 238000000227 grinding Methods 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 238000011835 investigation Methods 0.000 description 1
- 230000001678 irradiating effect Effects 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000003973 paint Substances 0.000 description 1
- 239000011241 protective layer Substances 0.000 description 1
- 230000008439 repair process Effects 0.000 description 1
- VSZWPYCFIRKVQL-UHFFFAOYSA-N selanylidenegallium;selenium Chemical compound [Se].[Se]=[Ga].[Se]=[Ga] VSZWPYCFIRKVQL-UHFFFAOYSA-N 0.000 description 1
- 239000012798 spherical particle Substances 0.000 description 1
- 239000002344 surface layer Substances 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24C—ABRASIVE OR RELATED BLASTING WITH PARTICULATE MATERIAL
- B24C1/00—Methods for use of abrasive blasting for producing particular effects; Use of auxiliary equipment in connection with such methods
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B08—CLEANING
- B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
- B08B7/00—Cleaning by methods not provided for in a single other subclass or a single group in this subclass
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24C—ABRASIVE OR RELATED BLASTING WITH PARTICULATE MATERIAL
- B24C1/00—Methods for use of abrasive blasting for producing particular effects; Use of auxiliary equipment in connection with such methods
- B24C1/08—Methods for use of abrasive blasting for producing particular effects; Use of auxiliary equipment in connection with such methods for polishing surfaces, e.g. smoothing a surface by making use of liquid-borne abrasives
- B24C1/086—Descaling; Removing coating films
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24C—ABRASIVE OR RELATED BLASTING WITH PARTICULATE MATERIAL
- B24C1/00—Methods for use of abrasive blasting for producing particular effects; Use of auxiliary equipment in connection with such methods
- B24C1/10—Methods for use of abrasive blasting for producing particular effects; Use of auxiliary equipment in connection with such methods for compacting surfaces, e.g. shot-peening
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24C—ABRASIVE OR RELATED BLASTING WITH PARTICULATE MATERIAL
- B24C11/00—Selection of abrasive materials or additives for abrasive blasts
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24C—ABRASIVE OR RELATED BLASTING WITH PARTICULATE MATERIAL
- B24C11/00—Selection of abrasive materials or additives for abrasive blasts
- B24C11/005—Selection of abrasive materials or additives for abrasive blasts of additives, e.g. anti-corrosive or disinfecting agents in solid, liquid or gaseous form
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24C—ABRASIVE OR RELATED BLASTING WITH PARTICULATE MATERIAL
- B24C3/00—Abrasive blasting machines or devices; Plants
Definitions
- the invention relates to a method and an apparatus for removing a layer of at least one first material from a surface of a body of at least one second material.
- bodies are components of machines or devices, the O ber Assembly are often provided with a coating of another material, such as a paint or a similar protective layer.
- a particularly preferred use relates to components of aircraft engines, in particular components, such as umström- te profiles such as runners or vanes or grids.
- layers are in particular heat-insulating layers or ceramic layers, such as coatings, the Zr0 2 or A1 2 0 3 includes, in particular, defective coatings on newly manufactured or repaired parts.
- abrasive methods have hitherto been used for this, in which abrasives are used manually or with the aid of grinding machines for machining the surface.
- chemical cleaning or etching agents are used, with the help of which the layer to be removed is attacked and detached.
- Wännedämm Anlagenen or ceramic layers are often removed by means of high pressure water jets, especially in combination with KOH lye.
- Such methods are often quite expensive, associated with the use of expensive equipment or with an undesirable change in the adhesive layer.
- the present invention has for its object to improve a removal of a layer from a surface of a body.
- the body is exposed to a pressure jet of at least one blasting medium, in particular spherical, particles, the pressure blast having an alpine intensity at most during the entire impingement time or at least in part of this time 0.35 Almen A, preferably at most 0.3 Almen A and particularly preferably at most 0.25 Almen A.
- a low-energy fatigue radiation in particular for the removal of thermal insulation and / or ceramic layers, for components of an aircraft engine such as guide or playpens, in particular a turbine or turbine stage, thus proposed over the prior art.
- the method can equally be used to repair such components as well as to remove coatings in the new production.
- the almen intensity of the pressure jet is at least 0.005 Almen N, preferably at least 0.01 Almen N and particularly preferably at least 0.05 Almen N during the entire loading time or at least part of this time.
- Almenintenstician is a quantitative measure of jet processes, in particular shot peening processes ,
- the deformation which causes the blasting process in a sample, in particular a strip of SAE1070 spring steel ("Almenstsammlung") when irradiated from 90 mm, in particular the deflection due to the impressed by the blasting process in the unilaterally irradiated sample residual compressive stresses, in particular the
- the Almen strip can be irradiated for a defined time or until the saturation point is reached, which is defined as the deflection, which only increases by 10% when the jet duration is doubled It is about 0.79 mm (0.031 ”) at N and about 1.25 mm (0.051") at A, the wall thickness of the used Almenstsammlungs.
- the first material may also be wholly or partly identical to the second material, in particular chemically or physically.
- the particles are preferably spherical, they must but not exactly spherical in terms of; It is also sufficient for an approximately spherical shape of the particles.
- the body is exposed to the pressure jet only until the layer to be removed has been removed to a desired degree.
- the body is exposed to the pressure jet even if the layer to be removed has been removed to the desired degree until the surface of the body reaches a desired position where it was exposed to the pressure jet , has reached specified strength level.
- This embodiment of the invention has the advantage that the cleaning of a surface or the removal of a layer from a surface can be combined with a solidifying treatment of the surface in one operation. When irradiating a surface with shot peening, it is possible to introduce compressive residual stresses into the surface, which improves the fatigue strength of the surface material. In this way cracking, e.g. due to corrosion fatigue in the surface, decisively reduce.
- the particles in particular spherical particles, consist of a chemically less reactive ("inert") material at least temporarily during the duration of the irradiation
- the size of the particles, the material composition and / or the internal structure of the particles can be change the duration of the irradiation
- Transition from the cleaning, the abrasion abrading effect of the radiation to the curing effect of the irradiation, a change in the size of the particles, their material composition or their internal structure can advantageously affect the result of the irradiation.
- At least temporarily particles are used which contain a concentric with a first material encased, in particular spherical, core of a second material.
- a preferred embodiment of the method according to the invention provides that the pressure jet next to a blasting agent of particles, which preferably consist of a chemically less reactive material, at least temporarily contains at least one further substance which reacts chemically with at least one material component of the layer to be removed.
- These chemically reactive materials are preferably alkalis of an alkali metal hydroxide, for example potassium hydroxide (KOH). Investigations have shown that glass beads or glass-coated particles are particularly suitable blasting agents. Additionally or alternatively, some or all of the particles may also comprise, in particular consist of, zirconium (Zr), ceramic and / or plastic.
- particles whose maximum or average dimension, in particular their diameter, at least 5 ⁇ , preferably at least ⁇ and more preferably at least 15 ⁇ and / or at most 550 ⁇ , preferably at most 500 ⁇ and more preferably at most 450 ⁇ , at least temporarily use to lead to advantageous results of the surface texture.
- the degree of coverage in the case of irradiation by the process according to the invention is preferably between 3 and 100.
- Some or all of the particles preferably have, at least temporarily, a hardness of between 280 and 550 Vickers hardness (HV) at a test load of 0.3 kiloponds. Additionally or alternatively, their elongation at break ⁇ is preferably at most 0.3%, preferably at most 0.2% and particularly preferably at most 0.1%.
- the mean velocity of the particles in the pressure jet is preferably at least 0.5 m / s, preferably at least 1 m / s and more preferably at least 20 m / s, and / or at most 80 m s.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Application Of Or Painting With Fluid Materials (AREA)
- Cleaning In General (AREA)
- Photoreceptors In Electrophotography (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102010034336A DE102010034336B4 (de) | 2010-08-14 | 2010-08-14 | Verfahren und Vorrichtung zum Entfernen einer Schicht von einer Oberfläche eines Körpers |
| PCT/DE2011/001562 WO2012022298A2 (de) | 2010-08-14 | 2011-08-06 | Verfahren und vorrichtung zum entfernen einer schicht von einer oberfläche eines körpers |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP2603355A2 true EP2603355A2 (de) | 2013-06-19 |
| EP2603355B1 EP2603355B1 (de) | 2015-10-07 |
Family
ID=45528287
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP11796609.3A Not-in-force EP2603355B1 (de) | 2010-08-14 | 2011-08-06 | Verfahren zum entfernen einer schicht von einer oberfläche eines körpers |
Country Status (4)
| Country | Link |
|---|---|
| US (1) | US9333623B2 (de) |
| EP (1) | EP2603355B1 (de) |
| DE (1) | DE102010034336B4 (de) |
| WO (1) | WO2012022298A2 (de) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB201517128D0 (en) * | 2015-09-28 | 2015-11-11 | Enbio Ltd | Abrasive blast modification of surfaces |
| US10406651B2 (en) * | 2016-04-01 | 2019-09-10 | Rolls-Royce Plc | Methods of vibro-treating and vibro-treating apparatus |
| JP6307109B2 (ja) * | 2016-05-20 | 2018-04-04 | 株式会社不二製作所 | 金属成品の表面処理方法及び金属成品 |
| US11260421B2 (en) | 2017-07-21 | 2022-03-01 | Raytheon Technologies Corporation | Method to strip and recoat erosion coatings applied to fan blades and structural guide vanes |
| DE102022116082A1 (de) | 2022-06-28 | 2023-12-28 | Voestalpine Metal Forming Gmbh | Verfahren zum Konditionieren der Oberflächen von wärmebehandelten, verzinkten Stahlblechen |
Family Cites Families (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4239804A (en) * | 1979-03-05 | 1980-12-16 | Progressive Blasting Systems | Method for treating metal articles for rust corrosion protection and article produced thereby |
| US4889589A (en) | 1986-06-26 | 1989-12-26 | United Technologies Corporation | Gaseous removal of ceramic coatings |
| US5227036A (en) | 1990-02-23 | 1993-07-13 | Gordon Roy G | Electrolytic removal of tin oxide from a coater |
| DE4041103A1 (de) * | 1990-12-21 | 1992-07-02 | Mtu Muenchen Gmbh | Verfahren zur oberflaechenbehandlung von bauteilen |
| DE4110595C1 (en) | 1991-04-02 | 1992-11-26 | Thyssen Edelstahlwerke Ag, 4000 Duesseldorf, De | Wet-chemical removal of hard coatings from workpiece surfaces - comprises using hydrogen peroxide soln. stabilised by complex former e.g. potassium-sodium tartrate-tetra:hydrate |
| DE4303137C2 (de) | 1993-02-04 | 1996-07-11 | Mtu Muenchen Gmbh | Verfahren zum Entfernen von Keramikschichten auf Metallbauteilen |
| US5972424A (en) | 1998-05-21 | 1999-10-26 | United Technologies Corporation | Repair of gas turbine engine component coated with a thermal barrier coating |
| US6194026B1 (en) | 1998-10-19 | 2001-02-27 | Howmet Research Corporation | Superalloy component with abrasive grit-free coating |
| EP1317995A1 (de) * | 2001-12-05 | 2003-06-11 | Siemens Aktiengesellschaft | Verfahren und Vorrichtung zur Glättung der Oberfläche einer Gasturbinenschaufel |
| DE102005049249B4 (de) | 2005-10-14 | 2018-03-29 | MTU Aero Engines AG | Verfahren zur Entschichtung eines Gasturbinenbauteils |
| JP2011504409A (ja) * | 2007-10-16 | 2011-02-10 | エイチケーピービー サイエンティフィック リミテッド | 表面コーティング方法およびその使用 |
| DE102008014726A1 (de) * | 2008-03-18 | 2009-09-24 | Rolls-Royce Deutschland Ltd & Co Kg | Verfahren zur Kugelstrahlbehandlung von integral beschaufelten Rotoren |
-
2010
- 2010-08-14 DE DE102010034336A patent/DE102010034336B4/de not_active Expired - Fee Related
-
2011
- 2011-08-06 EP EP11796609.3A patent/EP2603355B1/de not_active Not-in-force
- 2011-08-06 US US13/816,910 patent/US9333623B2/en not_active Expired - Fee Related
- 2011-08-06 WO PCT/DE2011/001562 patent/WO2012022298A2/de not_active Ceased
Non-Patent Citations (1)
| Title |
|---|
| See references of WO2012022298A2 * |
Also Published As
| Publication number | Publication date |
|---|---|
| US9333623B2 (en) | 2016-05-10 |
| DE102010034336B4 (de) | 2013-05-29 |
| WO2012022298A2 (de) | 2012-02-23 |
| WO2012022298A3 (de) | 2012-06-07 |
| DE102010034336A1 (de) | 2012-02-16 |
| US20130139852A1 (en) | 2013-06-06 |
| EP2603355B1 (de) | 2015-10-07 |
| WO2012022298A9 (de) | 2012-08-16 |
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