EP1536025A1 - Verfahren und Vorrichtung zur Beschichtung oder Wärmebehandlung von BLISK- Scheiben für Fluggasturbinen - Google Patents
Verfahren und Vorrichtung zur Beschichtung oder Wärmebehandlung von BLISK- Scheiben für Fluggasturbinen Download PDFInfo
- Publication number
- EP1536025A1 EP1536025A1 EP04078135A EP04078135A EP1536025A1 EP 1536025 A1 EP1536025 A1 EP 1536025A1 EP 04078135 A EP04078135 A EP 04078135A EP 04078135 A EP04078135 A EP 04078135A EP 1536025 A1 EP1536025 A1 EP 1536025A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- cooling
- blisk
- ring channel
- coating
- blades
- 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
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Classifications
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D9/00—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor
- C21D9/0068—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor for particular articles not mentioned below
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D9/00—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor
- C21D9/0006—Details, accessories not peculiar to any of the following furnaces
- C21D9/0025—Supports; Baskets; Containers; Covers
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D2221/00—Treating localised areas of an article
Definitions
- the invention relates to a method for hard material coating at elevated temperature or for heat treatment of Blades of BLISK discs from aircraft gas turbines and a device for carrying out the method.
- BLISK discs are used in which the actual Slice, the scoop platform and the blades made of one piece.
- the blades for example in a plasma vapor coating process, at elevated temperature with hard materials such as Nitrides or carbides coated.
- the BLISK discs after repairs to the blades subjected to a heat treatment.
- the coating process or the heat treatment are disadvantageous in that not just the blades, but also the blade platform and the disc itself the high, the maximum operating temperature are exposed to excessive heating. While the high warming in the less loaded blades no serious problems, the treatment temperature can be in the other parts of the disc to geometric Deformation and impairment of function and ultimately lead to a shortening of the life.
- the invention is based on the object, the coating or Heat treatment process and the implementation of the Process required device in such a way that the Blades repeatedly repaired and heat treated or can be coated, but thereby the life of the BLISK disc as a whole is not affected.
- the object is achieved with a method according to the features of claim 1 and with a device for carrying out the method according to claim. From the subclaims advantageous embodiments result the invention.
- the proposed method are at the at high Temperature taking hard coating or a Heat treatment of the blades only those of high temperature exposed while the remaining disk parts opposite the hot environment isolated and partially by heat transfer on a solid medium and a flowable cooling medium be cooled and thus the maximum operating temperature do not exceed.
- the inventive idea exists in other words in the heat treatment / coating of the a disc part with simultaneous cooling and insulation of the other disc part.
- the heavily loaded during operation Disc therefore retains even after multiple heat treatment or coating their full functionality and achieved a long life.
- the functionality becomes the less loaded blades by the heat not impaired.
- the hard coating or the heat treatment repaired blades is a long life of BLISK blades guaranteed.
- the cooling device for carrying out the above Method includes two or more thermally insulated on the outer surfaces Cooling plates, namely a bottom cooling plate and a Deckkühlplatte and - if more than one to be treated BLISK disc - at least one intermediate cooling plate.
- the cooling plates have flanges on the circumference, their front sides in operative connection with the end faces of the blade platform stand up and by heat transfer from the blade platform serve the flange as a solid coolant.
- Another Cooling is done with a trained in the cooling plates Coolant channels supplied flowable cooling medium, the both the inner surfaces of the support flanges of the cooling plates as also the inner surfaces of the blade platform cools. While So the blades of the BLISK discs one for heat treatment after repair work or hard coating required high temperature can be subjected the other disc parts at a low temperature be kept, with no negative effect on the properties the disc and thus their function and life is.
- a cooling plate comprises a Inner ring channel through which the cooling fluid is supplied, and a connected thereto via the coolant channels outer ring channel with attached swirl nozzles. through The swirl nozzles can direct the cooling fluid to the inner surfaces directed the support flanges and the blade platform become. If the cooling plate as an intermediate cooling plate between Two adjacent BLISK disks are the swirl nozzles also arranged in opposite directions to both flanges and pressurize both blade platforms with the cooling fluid to be able to.
- the coolant channels upstream of a volume control means which preferably consists of two adjoining collars with slot openings.
- the degree of overlap of the slot openings determines the coolant volume supplied to the support flange and the blade platform, respectively.
- the thermal insulation of the cooling plates with respect to the hot hard coating or heat treatment atmosphere is carried out with attached to the outer surfaces heat shields.
- a one-piece BLISK disc 1 for the compressor an aircraft gas turbine comprises a disc 1 'with connecting arms 2, a paddle platform 3 and at this integrally formed airfoils 4.
- the blades 4 with carbides or nitrides or with one on one Blade repair following heat treatment will only be the Blades 4 for heat treatment or for coating in an evaporation process in an oven of the required Temperature exposed while the heating is not
- coated parts of the BLISK disc 1 to a higher Temperature than during normal operation of the aircraft gas turbine takes place, but according to the respectively used titanium alloy, for example, Ti64 or Ti6246, a maximum allowable Temperature does not exceed 320 ° C or 350 ° C.
- the example of two BLISK discs to be treated here shown cooling device comprises three cooling plates 5 to 7, namely a bottom cooling plate 5, a cover cooling plate 7 and a Swisskühlplatte6 arranged between the two BLISK discs 1.
- the Intermediate cooling plates have a central passage opening 27 on.
- the three cooling plates 5 to 7 each include one Inner ring channel 8 and an intermediate ring channel 9, via a Volume control means 10 for controlling the cooling medium flow connected to each other.
- the volume control means 10 consists from a first adjusting ring 11 with slot openings 12 and a second adjusting ring 13 with slot openings 14. Die necessary regulation of the in a cooling device in different height arranged BLISK discs 1 from each other deviating coolant volume is made by adjusting the collars 11, 13 relative to each other and thereby adjustable degree of coverage of the slot openings 12 and 14th
- the cooling plates 5 to 7 further have an outer ring channel 15 on.
- About the circumference of the intermediate ring channel 9 outgoing Radial coolant channels 16 is the intermediate ring channel 9 connected to the outer ring channel 15.
- the curved running Coolant channels 16 open tangentially into the outer ring channel 15.
- the formed in the bottom cooling plate 5 inner ring channel 8 is provided with a in the bottom cooling plate 5 Cooling medium connection 17 is connected, and the inner ring channel. 8 the intermediate cooling plate 6 is in each case via a media feed line 18 with the inner ring channels 8 both the bottom cooling plate 5 and the deck cooling plate 7 connected.
- Around Mouth of the coolant channels 16 in the outer ring channel 15 are obliquely arranged swirl nozzles 19 are formed. At the intermediate cooling plate 6, the swirl nozzles 19 go from both sides of the outer ring channel 15.
- the BLISK blades 1 are at the front of their blade platform 3 between support flanges 20 held on the Floor cooling plate 5 and on the deck cooling plate 7 each one-sided are formed and from the intermediate cooling plate 6 after both Aspire pages.
- the support flanges 20 are in close, thermally conductive contact with the blade platform 3 to from the blade platform 3 dissipate as much heat.
- to Increase the cooling effect of the cooling medium on the three cooling plates 5 to 7 is on the outer peripheral wall of the outer ring channels 17 and on the pressure-side outer wall of the swirl channels 16 to increase the cooling surface a surface structuring 25 provided.
- heat shields 21 attached to a heat transfer from the outside to prevent the cooling plates 3 to 5 or possible to keep low.
- More heat shields 22 are at the parallel opposite inner surfaces of the cooling plates. 5 to 7 provided.
- the heat shields 21, 22 can at the Inside lined with a heat-insulating material 26 be.
- the heat shields 22 are provided with holding means 23 fastened, which are shaped so that heated cooling medium of the heat shield 22 is routed away.
- In the floor cooling plate 5 is ademediumauslass 24th
- the blades 4 of the two BLISK disks 1 are thus free in the plasma vapor deposition chamber, while the remaining parts of the BLISK disc, apart from the one adjacent to the blades 4 Outside surface of the blade platform 3, in the of the cooling plates 5 to 7 enclosed, by external heat shields 21 isolated space.
- the cooling medium passes through the cooling medium connection 17 and the media supply lines 18 in the inner ring channel 8 of the bottom cooling plate 5, the intermediate cooling plate 6 and the deck cooling plate 7. From the inner ring channel 8, the cooling medium flows over the Volume control means 10, that is, the slot openings 12th and 14 in the adjustable collars 11, 13, in the respective Intermediate ring channel 9 and from there into the coolant channels 16 and finally into the respective outer ring channels 15th of the three cooling plates 5 to 7.
- Cooling medium flows along the support flanges 20 of the Cooling plates and the blade platform 3 and the connecting arms 2 of the BLISK disc 1 and passes over the as guide elements formed holding means 23 for the internal heat shields 22 in the space between each adjacent Cooling plates 5 and 6 as well as 6 and 7.
- the heated cooling medium finally flows over thedemediumauslass 24 to the outside. It can be cooled by means of heat exchangers (not shown) and be reintegrated into the cooling process.
- the closest to the blades 4 and thereby a blade platform exposed to a very high heat load 3 is on the one hand by the heat-conducting contact with the intensely cooled support flanges 20 and also immediately cooled by the cooling medium flow. This will - apart from the blades - the maximum operating temperature of the material of the BLISK disc and thus also with multiple, by repair or hard material coating conditional heat treatment of the blades one Long life of the BLISK disc achieved.
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- Mechanical Engineering (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Turbine Rotor Nozzle Sealing (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
Description
Die Wärmeisolierung der Kühlplatten gegenüber der heißen Hartstoffbeschichtungs- bzw. Wärmebehandlungsatmosphäre erfolgt mit an deren Außenflächen befestigten Wärmeschutzschilden.
- Fig. 1
- eine teilweise Darstellung einer Kühlvorrichtung für zwei BLISK-Scheiben des Hochdruckverdichters einer Fluggasturbine in einer Schnittansicht; und
- Fig. 2
- einen Längsschnitt durch eine zwischen zwei BLISK-Scheiben angeordnete Zwischenkühlplatte der Kühlvorrichtung nach Fig. 1.
- 1
- BLISK-Scheibe
- 1'
- Scheibe
- 2
- Anschlussarme
- 3
- Schaufelplattform
- 4
- Schaufelblatt
- 5
- Bodenkühlplatte (Kühlplatte)
- 6
- Zwischenkühlplatte (Kühlplatte)
- 7
- Deckkühlplatte (Kühlplatte)
- 8
- Innenringkanal
- 9
- Zwischenringkanal
- 10
- Volumenregelungsmittel
- 11
- Erster Stellring
- 12
- Schlitzöffnung
- 13
- Zweiter Stellring
- 14
- Schlitzöffnung
- 15
- Außenringkanal
- 16
- Kühlmittelkanäle
- 17
- Kühlmediumanschluss
- 18
- Medienzuleitung
- 19
- Dralldüsen
- 20
- Tragflansch
- 21
- Wärmeschutzschild außen
- 22
- Wärmeschutzschild innen
- 23
- Haltemittel (Leitelement)
- 24
- Kühlmediumauslass
- 25
- Oberflächenstrukturierung
- 26
- Isolierwerkstoff v. 21/22
- 27
- Durchlassöffnung v. 6
Claims (10)
- Verfahren zur Hartstoffbeschichtung bei erhöhter Temperatur oder zur Wärmebehandlung der Schaufelblätter von BLISK-Scheiben für Fluggasturbinen, dadurch gekennzeichnet, dass die BLISK-Scheiben als Ganzes in einen Wärmebehandlungsofen oder eine Beschichtungskammer mit der erforderlichen Wärmebehandlungs- oder Beschichtungstemperatur eingebracht werden und bis auf die Schaufelblätter die weiteren Teile der BLISK-Scheibe gegenüber Ofenatmosphäre isoliert und partiell mit einem festen und einem flüssigen Kühlmittel gekühlt werden, während die Schaufelblätter der für die Beschichtung oder Wärmebehandlung notwendigen hohen Temperatur ausgesetzt werden.
- Vorrichtung zur Durchführung des Verfahrens nach Anspruch 1, gekennzeichnet durch zwei oder mehrere an den Außenflächen wärmeisolierte Kühlplatten (5 bis 7), zwischen denen die BLISK-Scheibe(n) (1) jeweils an den Stirnflächen ihrer Schaufelplattform(en) (3) auf Tragflanschen (20) wärmeleitend abgestützt sind und die im Innern an eine Kühlmediumquelle angeschlossene, radial verlaufende Kühlmittelkanäle (16) zur Beaufschlagung der Innenflächen der Tragflansche (20) und der Schaufelplattformen (3) mit einem Kühlmedium aufweisen.
- Vorrichtung nach Anspruch 2, dadurch gekennzeichnet, dass die Kühlscheiben eine Bodenkühlplatte (5) und eine Deckkühlplatte (7) mit jeweils einem am Außenumfang umlaufenden Tragflansch (20) sowie bei der Behandlung von zwei oder mehreren BLISK-Scheiben (1) mindestens eine Zwischenkühlplatte (6) mit jeweils zwei am Außenumfang ausgebildeten, in entgegengesetzte Richtungen weisenden Tragflanschen (20) umfasst, und in der Bodenkühlplatte (5) ein Kühlmediumanschluss (17) und ein Kühlmediumauslass (24) vorgesehen ist.
- Vorrichtung nach Anspruch 2, dadurch gekennzeichnet, dass die Kühlmittelkanäle (16) als gekrümmte, einen Zwischenringkanal (9) und einen am Außenumfang der Kühlscheiben umlaufenden Außenringkanal (15) verbindende Drallkanäle ausgebildet sind, und dem Zwischenringkanal (9) über ein Volumenregelungsmittel (10) ein Innenringkanal (8) vorgeschaltet ist, der an eine Medienzuleitung (18) angeschlossen ist.
- Vorrichtung nach Anspruch 4, dadurch gekennzeichnet, dass vom Außenringkanal (15) am Umfang verteilte, in Richtung der Tragflansche (20) und der Schaufelplattform(en) weisende Dralldüsen (19) vorgesehen sind.
- Vorrichtung nach Anspruch 4, dadurch gekennzeichnet, dass das Volumenregelungsmittel (10) einen ersten und einen zweiten Stellring (11, 13), die jeweils Schlitzöffnungen (12, 14) haben, umfasst.
- Vorrichtung nach Anspruch 4, dadurch gekennzeichnet, dass der Außenringkanal (15) an seiner radialen Umfangsfläche eine Oberflächenstrukturierung (25) zur Erhöhung der Kühlwirkung an der dieser gegenüberliegenden Außenfläche der Kühlplatte (5bis7) aufweist
- Vorrichtung nach Anspruch 2, dadurch gekennzeichnet, dass zur Wärmeisolierung gegenüber dem Beschichtungsoder Wärmebehandlungsmedium an den Außenflächen der Kühlplatten (5 bis 7) Wärmeschutzschilde (21) angebracht sind.
- Vorrichtung nach Anspruch 2, dadurch gekennzeichnet, dass zur Wärmeisolierung gegenüber dem erhitzten Kühlmedium an den waagerechten Innenflächen der Kühlplatten (5 bis 7) Wärmeschutzschilde (22) angebracht sind.
- Vorrichtung nach Anspruch 9, dadurch gekennzeichnet, dass die inneren Wärmeschutzschilde (22) mit Haltemitteln (23) befestigt sind, die Leitelemente zum Wegleiten des erwärmten Kühlmediums von den inneren Wärmeschutzschilden (22) aufweisen.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE10356679 | 2003-11-28 | ||
DE10356679A DE10356679A1 (de) | 2003-11-28 | 2003-11-28 | Verfahren und Vorrichtung zur Beschichtung oder Wärmebehandlung von BLISK-Scheiben für Fluggasturbinen |
Publications (3)
Publication Number | Publication Date |
---|---|
EP1536025A1 true EP1536025A1 (de) | 2005-06-01 |
EP1536025B1 EP1536025B1 (de) | 2008-09-03 |
EP1536025B8 EP1536025B8 (de) | 2009-01-07 |
Family
ID=34442441
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP04078135A Expired - Fee Related EP1536025B8 (de) | 2003-11-28 | 2004-11-11 | Verfahren und Vorrichtung zur Beschichtung oder Wärmebehandlung von BLISK- Scheiben für Fluggasturbinen |
Country Status (3)
Country | Link |
---|---|
US (2) | US7413610B2 (de) |
EP (1) | EP1536025B8 (de) |
DE (2) | DE10356679A1 (de) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2008043617A2 (de) * | 2006-10-10 | 2008-04-17 | Robert Bosch Gmbh | Verfahren zur wärmebehandlung |
WO2010109012A1 (de) * | 2009-03-26 | 2010-09-30 | Voestalpine Automotive Gmbh | Verfahren zum herstellen partiell gehärteter stahlbauteile |
Families Citing this family (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US7837843B2 (en) * | 2005-07-12 | 2010-11-23 | Praxair S.T. Technology, Inc. | Fixture for use in a coating operation |
DE102009010109A1 (de) | 2009-02-21 | 2010-09-23 | Mtu Aero Engines Gmbh | Herstellung einer Turbinenblisk mit einer Oxikations- bzw. Korrosionsschutzschicht |
EP2359940A1 (de) * | 2010-02-12 | 2011-08-24 | Siemens Aktiengesellschaft | Spritznebelabschirmungsvorrichtung und -verfahren |
US8468969B2 (en) * | 2010-11-30 | 2013-06-25 | United Technologies Corporation | Dimensionally stable durable thermal spray masking system |
EP3034228A3 (de) * | 2014-12-17 | 2016-07-27 | Rolls-Royce plc | Verfahren zur herstellung eines integral beschaufelten rotors für eine turbomaschine |
US9903214B2 (en) | 2015-05-26 | 2018-02-27 | General Electric Company | Internally cooled turbine blisk and method of manufacture |
US11828190B2 (en) | 2021-11-18 | 2023-11-28 | General Electric Company | Airfoil joining apparatus and methods |
Citations (7)
Publication number | Priority date | Publication date | Assignee | Title |
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US3241519A (en) * | 1962-04-05 | 1966-03-22 | Western Electric Co | Tensioned and cooled mask |
US3683847A (en) * | 1971-02-19 | 1972-08-15 | Du Pont | Apparatus for vacuum metallizing |
EP0525975A1 (de) * | 1991-06-25 | 1993-02-03 | Turbine Blading Limited | Vorrichtung zur Wärmebehandlung und Reparatur von Turbinenschaufeln |
US5417567A (en) * | 1993-01-30 | 1995-05-23 | Ipsen Industries International Gesellschaft Mit Beschrankter Haftung | Holder means for the partial thermal treatment of workpieces |
WO2001004375A1 (en) * | 1999-07-14 | 2001-01-18 | Dormer Tools (Sheffield) Limited | Method and means for drill production |
EP1253289A2 (de) * | 2001-04-17 | 2002-10-30 | United Technologies Corporation | Verfahren zur Herstellung und Reparatur eines integral beschaufelten Rotors |
US20020157739A1 (en) * | 2000-07-28 | 2002-10-31 | Fisher Geoffrey Philip | Method and means for heat treating cutting tools |
Family Cites Families (12)
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US3849022A (en) * | 1973-07-12 | 1974-11-19 | Gen Motors Corp | Turbine blade coolant distributor |
US3928963A (en) * | 1974-11-04 | 1975-12-30 | Gen Motors Corp | Cast in place gas turbine containment ring and method of manufacture |
US4136516A (en) * | 1977-06-03 | 1979-01-30 | General Electric Company | Gas turbine with secondary cooling means |
US4851188A (en) * | 1987-12-21 | 1989-07-25 | United Technologies Corporation | Method for making a turbine blade having a wear resistant layer sintered to the blade tip surface |
US5317877A (en) * | 1992-08-03 | 1994-06-07 | General Electric Company | Intercooled turbine blade cooling air feed system |
US6172327B1 (en) * | 1998-07-14 | 2001-01-09 | General Electric Company | Method for laser twist welding of compressor blisk airfoils |
DE19919054B4 (de) | 1999-04-27 | 2004-09-23 | Mtu Aero Engines Gmbh | Abdeckung für eine Bauteiloberfläche |
US6588484B1 (en) * | 2000-06-20 | 2003-07-08 | Howmet Research Corporation | Ceramic casting cores with controlled surface texture |
US6884975B2 (en) * | 2002-11-12 | 2005-04-26 | The Boeing Company | Localized stress relief by induction heating |
US7259353B2 (en) * | 2004-09-30 | 2007-08-21 | Honeywell International, Inc. | Compact coaxial nozzle for laser cladding |
US7358466B1 (en) * | 2006-01-12 | 2008-04-15 | General Electric Company | Localized heat treating apparatus for blisk airfoils |
DE102006033299A1 (de) * | 2006-07-17 | 2008-01-24 | Rolls-Royce Deutschland Ltd & Co Kg | Verfahren zur Reparatur eines in BLISK-Bauweise ausgeführten Verdichterrotors |
-
2003
- 2003-11-28 DE DE10356679A patent/DE10356679A1/de not_active Withdrawn
-
2004
- 2004-11-11 EP EP04078135A patent/EP1536025B8/de not_active Expired - Fee Related
- 2004-11-11 DE DE502004007973T patent/DE502004007973D1/de active Active
- 2004-11-29 US US10/998,153 patent/US7413610B2/en not_active Expired - Fee Related
-
2008
- 2008-07-17 US US12/219,177 patent/US8029865B2/en not_active Expired - Fee Related
Patent Citations (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3241519A (en) * | 1962-04-05 | 1966-03-22 | Western Electric Co | Tensioned and cooled mask |
US3683847A (en) * | 1971-02-19 | 1972-08-15 | Du Pont | Apparatus for vacuum metallizing |
EP0525975A1 (de) * | 1991-06-25 | 1993-02-03 | Turbine Blading Limited | Vorrichtung zur Wärmebehandlung und Reparatur von Turbinenschaufeln |
US5417567A (en) * | 1993-01-30 | 1995-05-23 | Ipsen Industries International Gesellschaft Mit Beschrankter Haftung | Holder means for the partial thermal treatment of workpieces |
WO2001004375A1 (en) * | 1999-07-14 | 2001-01-18 | Dormer Tools (Sheffield) Limited | Method and means for drill production |
US20020157739A1 (en) * | 2000-07-28 | 2002-10-31 | Fisher Geoffrey Philip | Method and means for heat treating cutting tools |
EP1253289A2 (de) * | 2001-04-17 | 2002-10-30 | United Technologies Corporation | Verfahren zur Herstellung und Reparatur eines integral beschaufelten Rotors |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2008043617A2 (de) * | 2006-10-10 | 2008-04-17 | Robert Bosch Gmbh | Verfahren zur wärmebehandlung |
WO2008043617A3 (de) * | 2006-10-10 | 2008-06-26 | Bosch Gmbh Robert | Verfahren zur wärmebehandlung |
WO2010109012A1 (de) * | 2009-03-26 | 2010-09-30 | Voestalpine Automotive Gmbh | Verfahren zum herstellen partiell gehärteter stahlbauteile |
US8597441B2 (en) | 2009-03-26 | 2013-12-03 | Voestalpine Metal Forming Gmbh | Method for producing partially hardened steel components |
Also Published As
Publication number | Publication date |
---|---|
DE10356679A1 (de) | 2005-07-21 |
DE502004007973D1 (de) | 2008-10-16 |
US8029865B2 (en) | 2011-10-04 |
EP1536025B1 (de) | 2008-09-03 |
US20100034974A1 (en) | 2010-02-11 |
EP1536025B8 (de) | 2009-01-07 |
US20050271512A1 (en) | 2005-12-08 |
US7413610B2 (en) | 2008-08-19 |
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