EP3013993A1 - Verfahren zum schutz des verdichterrades eines abgasturboladers vor einer beschädigung sowie verdichterrad - Google Patents
Verfahren zum schutz des verdichterrades eines abgasturboladers vor einer beschädigung sowie verdichterradInfo
- Publication number
- EP3013993A1 EP3013993A1 EP14780455.3A EP14780455A EP3013993A1 EP 3013993 A1 EP3013993 A1 EP 3013993A1 EP 14780455 A EP14780455 A EP 14780455A EP 3013993 A1 EP3013993 A1 EP 3013993A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- compressor wheel
- blades
- process gas
- edges
- melt
- 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 37
- 238000001816 cooling Methods 0.000 claims abstract description 8
- 229910052751 metal Inorganic materials 0.000 claims abstract description 8
- 239000002184 metal Substances 0.000 claims abstract description 8
- 238000002844 melting Methods 0.000 claims abstract 2
- 230000008018 melting Effects 0.000 claims abstract 2
- 239000007789 gas Substances 0.000 claims description 41
- 239000000155 melt Substances 0.000 claims description 13
- 229910052782 aluminium Inorganic materials 0.000 claims description 6
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 6
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims description 4
- 239000001301 oxygen Substances 0.000 claims description 4
- 229910052760 oxygen Inorganic materials 0.000 claims description 4
- TWNQGVIAIRXVLR-UHFFFAOYSA-N oxo(oxoalumanyloxy)alumane Chemical compound O=[Al]O[Al]=O TWNQGVIAIRXVLR-UHFFFAOYSA-N 0.000 claims description 2
- 239000000463 material Substances 0.000 description 13
- 239000002245 particle Substances 0.000 description 11
- 239000007787 solid Substances 0.000 description 6
- 238000000576 coating method Methods 0.000 description 5
- 239000011248 coating agent Substances 0.000 description 4
- 239000004071 soot Substances 0.000 description 3
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 2
- 230000003116 impacting effect Effects 0.000 description 2
- 239000007769 metal material Substances 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 description 1
- 239000000956 alloy Substances 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 229910052593 corundum Inorganic materials 0.000 description 1
- 239000010431 corundum Substances 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
- 229910052759 nickel Inorganic materials 0.000 description 1
- 239000010936 titanium Substances 0.000 description 1
- 229910052719 titanium Inorganic materials 0.000 description 1
- 238000012800 visualization Methods 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C8/00—Solid state diffusion of only non-metal elements into metallic material surfaces; Chemical surface treatment of metallic material by reaction of the surface with a reactive gas, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals
- C23C8/06—Solid state diffusion of only non-metal elements into metallic material surfaces; Chemical surface treatment of metallic material by reaction of the surface with a reactive gas, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals using gases
- C23C8/08—Solid state diffusion of only non-metal elements into metallic material surfaces; Chemical surface treatment of metallic material by reaction of the surface with a reactive gas, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals using gases only one element being applied
- C23C8/10—Oxidising
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01D—NON-POSITIVE DISPLACEMENT MACHINES OR ENGINES, e.g. STEAM TURBINES
- F01D5/00—Blades; Blade-carrying members; Heating, heat-insulating, cooling or antivibration means on the blades or the members
- F01D5/12—Blades
- F01D5/28—Selecting particular materials; Particular measures relating thereto; Measures against erosion or corrosion
- F01D5/286—Particular treatment of blades, e.g. to increase durability or resistance against corrosion or erosion
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
- F05D—INDEXING SCHEME FOR ASPECTS RELATING TO NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES, GAS-TURBINES OR JET-PROPULSION PLANTS
- F05D2220/00—Application
- F05D2220/40—Application in turbochargers
Definitions
- the invention relates to a method for protecting the compressor wheel of an exhaust gas turbocharger from damage and a compressor wheel.
- To reduce the exhaust emissions of an automotive engine it is already known to supply a portion of the exhaust gas to the engine together with fresh air again.
- the recirculated exhaust gas are often small solid particles, especially soot particles.
- the fresh air-exhaust gas mixture is supplied to the combustion chamber of the engine via the compressor wheel of an exhaust gas turbocharger. In this case, those contained in the exhaust gas
- An object of the invention is to provide a method for protecting the compressor wheel of an exhaust gas turbocharger from damage in which neither high-strength materials nor a coating of the compressor wheel with a high-strength material are needed.
- Another object of the invention is to provide a protected from damage compressor wheel of an exhaust gas turbocharger, which neither from a high-strength material is still a coating of a high-strength material.
- the advantages of the invention are that by locally converting the light metal material of the surfaces of the leading edges of the blades of the compressor wheel using a laser beam and a process gas, these leading edges are hardened, thus providing improved protection of the compressor wheel damage is achieved.
- it is not necessary to use expensive high-strength materials as a compressor wheel ⁇ material or as a coating material for the comparison you terrad.
- a further advantage of the invention is that a compressor wheel with the features according to the invention is comparatively easy to produce, since the laser beams required for carrying out the method and also the required process gas can each be directed in a simple manner specifically to the parts of the compressor wheel to be hardened.
- Figure 1 is a representation for illustrating the
- FIG. 2 shows an enlarged partial view of the one shown in FIG.
- FIG. 3 shows an enlarged partial view of that shown in FIG.
- FIG. 4 shows a flowchart for illustrating a method for protecting a compressor wheel from damage.
- FIG. 1 shows a representation to illustrate the compressor wheel of an exhaust gas turbocharger.
- This compressor wheel has blades 2, which are compressor wheel main blades and intermediate compressor blades. Each of these blades 2 has an entry edge 2a and flanks 2b. These flanks 2b have a part adjacent to the leading edge 2a and a part remote from the leading edge 2a.
- the air-gas mixture enters, which contains small solid particles, in particular soot particles, in motor vehicles with exhaust gas recirculation.
- the Ver ⁇ dichterrad 1 rotates at a very high speed during operation of the exhaust gas turbocharger, it can damage or wear of the inlet edges of the compressor wheel and thus with a consisting of a light metal compressor wheel by the impinging on the inlet edges 2a of the blades 2 solid particles the entire compressor wheel come. As a result, the functionality of the exhaust gas turbocharger may be limited.
- Alloy material of the blades is converted using a laser beam and a process gas such that the surfaces of the leading edges are hardened and thereby provide better protection against damage by impacting exhaust particles.
- Figure 2 shows an enlarged partial view of the in the figure
- Ver Whyrradzapfens 3 it can be seen that this has a Man ⁇ tel Chemistry 3a and an end face 3b.
- the leading edges 2a of the blades 2 of the compressor wheel 1 according to the present invention have a laser-oxidized, hardened surface. Furthermore, in the case of FIG.
- flanks 2b of the blades 2 adjacent to the laser-oxidized, hardened surface of the inlet edges 2a are also provided with a laser-oxidized, hardened surface.
- This part of the laseroxid striv, hardened surface of the leading edge 2a adjacent edges 2b of the vanes, which is also equipped with a laseroxid striv, hardened surface can be chosen un ⁇ differently sized depending on the particular application case, as shown by the arrows in the figure 2 is illustrated. However, this part comprises at most half of the total area of a flank, since this has proven to be sufficient for the practice.
- the portion of the flanks 2b remote from the leading edges is not provided with a laser-oxidized, hardened surface.
- FIG. 3 shows an enlarged partial view of the compressor wheel shown in FIG. 1 for better illustration of the compressor wheel journal 3, which has a jacket surface 3a and an end face 3b.
- the invention also includes these He ⁇ Ver emphasizerradzapfen 3 to a laseroxidiert, hardened surface.
- this laser ⁇ oxidized, hardened surface is provided either in the region of the outer surface 3a or in the region of the end face 3b or both in the area of the lateral surface 3a and in the region of the end face 3b.
- 4 shows a flow chart illustrating a method for protecting a compressor wheel in front of a loading ⁇ damage.
- This compressor wheel has blades and a Ver emphasizerradzapfen and consists of a light metal, preferably aluminum.
- a step S1 the surface of the entry edges 2a of the blades 2 is melted by means of a laser beam. Subsequently, in a step S2, a supply of a process gas, which connects to the melt. Thereafter, in a step S3, hardening of the surface of the entry edges 2a occurs by cooling the process gas associated with the melt. If the compressor 1 of aluminum, then as
- Process gas supplied to oxygen This connects to the melt formed by the application of a laser beam in the region of the surface of the entrance edges 2a to an aluminum oxide (corundum).
- This has according to the purpose of cooling or rigid high hardness, so that the leading edge 2a of the blades 2 of the impeller 1 and therefore also the compressor 1, protected in the operation of the exhaust ⁇ turbocharger total from damage by impinging solid particles, in particular soot particles are, ie not damaged by their impact.
- a second embodiment of the invention will also be protected entry edges 2a adjacent portions of the edges 2b of the vanes 2 by a hardening of the surface thereof from being damaged by impacting hard ⁇ material particles in addition to the leading edge 2a of the blades 2 of the compressor wheel. 1
- a part of the surface of the inlet edges 2a of the blades 2 adjacent flanks 2b of the blades 2 is melted by means of a laser beam and acted upon by a supplied process gas, which connects to the melt.
- the compressor wheel journal 3 is additionally provided with a laser-oxidized, hardened surface.
- the surface of the Ver emphasizerradzapfens 3 is melted by means of a laser beam and applied to a process gas which connects to the melt. Thereafter, a hardening of the surface of Ver emphasizerradzapfens 3 by cooling the process gas connected to the melt.
- Ver Whyrradzapfens each for the purpose of forming a hardened surface By means of this laser-oxidized, hardened surface, the named components are protected against damage by solid particles impinging during operation of the exhaust-gas turbocharger.
- the compressor wheel is made of a different light metal than aluminum, then one or more gases other than oxygen are used as the process gas.
- a compressor wheel according to the invention offers cost advantages, since costly coatings of the compressor wheel with a high-strength material and also a use of costly, high-strength materials for the entire compressor wheel are not needed.
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Mechanical Engineering (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- General Engineering & Computer Science (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102013221712.9A DE102013221712A1 (de) | 2013-10-25 | 2013-10-25 | Verfahren zum Schutz des Verdichterrades eines Abgasturboladers vor einer Beschädigung sowie Verdichterrad |
PCT/EP2014/070973 WO2015058938A1 (de) | 2013-10-25 | 2014-09-30 | Verfahren zum schutz des verdichterrades eines abgasturboladers vor einer beschädigung sowie verdichterrad |
Publications (3)
Publication Number | Publication Date |
---|---|
EP3013993A1 true EP3013993A1 (de) | 2016-05-04 |
EP3013993B1 EP3013993B1 (de) | 2019-06-26 |
EP3013993B8 EP3013993B8 (de) | 2019-08-07 |
Family
ID=51659633
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP14780455.3A Active EP3013993B8 (de) | 2013-10-25 | 2014-09-30 | Verfahren zum schutz des verdichterrades eines abgasturboladers vor einer beschädigung sowie verdichterrad |
Country Status (3)
Country | Link |
---|---|
EP (1) | EP3013993B8 (de) |
DE (1) | DE102013221712A1 (de) |
WO (1) | WO2015058938A1 (de) |
Family Cites Families (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102006046503A1 (de) * | 2006-08-18 | 2008-02-21 | Mg-Micro Galva Gmbh | Laseroxidieren von Magnesium-, Titan- oder Aluminiumwerkstoffen |
DE102006051709A1 (de) * | 2006-10-30 | 2008-05-08 | AHC-Oberflächentechnik GmbH | Erzeugung von Verschleißschutzschichten auf Werkstoffen aus sperrschichtbildenden Metallen oder deren Legierungen mittels Laserbehandlung |
GB2475533B (en) * | 2009-11-21 | 2016-04-13 | Cummins Turbo Tech Ltd | Compressor wheel |
DE102012002284B4 (de) * | 2012-02-06 | 2014-08-21 | Audi Ag | Verfahren zum Herstellen eines Turbinenrotors eines Abgasturboladers sowie Verwendung eines Turbinenrotors |
-
2013
- 2013-10-25 DE DE102013221712.9A patent/DE102013221712A1/de not_active Withdrawn
-
2014
- 2014-09-30 WO PCT/EP2014/070973 patent/WO2015058938A1/de active Application Filing
- 2014-09-30 EP EP14780455.3A patent/EP3013993B8/de active Active
Non-Patent Citations (1)
Title |
---|
See references of WO2015058938A1 * |
Also Published As
Publication number | Publication date |
---|---|
EP3013993B1 (de) | 2019-06-26 |
EP3013993B8 (de) | 2019-08-07 |
DE102013221712A1 (de) | 2015-04-30 |
WO2015058938A1 (de) | 2015-04-30 |
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