US20070017607A1 - Method for heating components - Google Patents

Method for heating components Download PDF

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Publication number
US20070017607A1
US20070017607A1 US10/556,644 US55664404A US2007017607A1 US 20070017607 A1 US20070017607 A1 US 20070017607A1 US 55664404 A US55664404 A US 55664404A US 2007017607 A1 US2007017607 A1 US 2007017607A1
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US
United States
Prior art keywords
component
heating
laser
laser device
recited
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.)
Abandoned
Application number
US10/556,644
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English (en)
Inventor
Stefan Czerner
Klaus Emiljanow
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
MTU Aero Engines AG
Original Assignee
MTU Aero Engines GmbH
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by MTU Aero Engines GmbH filed Critical MTU Aero Engines GmbH
Assigned to MTU AERO ENGINES GMBH reassignment MTU AERO ENGINES GMBH ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: EMILJANOW, KLAUS, CZERNER, STEFAN OLIVER
Publication of US20070017607A1 publication Critical patent/US20070017607A1/en
Abandoned legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F27—FURNACES; KILNS; OVENS; RETORTS
    • F27D—DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS, OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
    • F27D99/00—Subject matter not provided for in other groups of this subclass
    • F27D99/0001—Heating elements or systems
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B3/00—Ohmic-resistance heating
    • H05B3/0033—Heating devices using lamps
    • H05B3/0038—Heating devices using lamps for industrial applications

Definitions

  • the present invention relates to a method for heating components prior to and/or during further processing.
  • Components such as turbine blades for example, must be heated during production or maintenance and repair in order to carry out different processing operations. This heating is also referred to as pre-heating.
  • a process known as hardfacing is used during maintenance and repair of turbine blades, for example. Pre-heating of the turbine blades to be welded to an intended processing temperature is required in connection with hardfacing. Reliable hardfacing can only be carried out when the turbine blade to be welded is heated to the processing temperature and the intended processing temperature is maintained during the hardfacing process.
  • inductive systems are used for heating or pre-heating of components.
  • Such inductive systems may be, for example, coils which heat the component by applying inductive energy.
  • Heating or pre-heating of components via inductive systems has the disadvantage that, during heating or pre-heating, large temperature tolerances of up to 50° C. may occur on the component to be heated. This improper temperature distribution on the component to be heated is disadvantageous.
  • inductive systems consume a large amount of energy.
  • Another disadvantage of inductive systems is the fact that, during heating or pre-heating, higher temperatures may occur in the interior of the component than on the surface of the component. This may result in damage to the component.
  • the object of the present invention is to create a novel method for heating components.
  • At least one laser device is used as the energy source for heating.
  • Speedier heating is achieved by using laser devices for heating the component than in heating methods known from the related art. Moreover, the use of laser devices ensures that no higher temperatures occur in the interior of the component to be heated than on its surfaces. Furthermore, laser devices have a radiant energy with a narrowly limitable specific wavelength. All this ensures that a defined amount of energy is applied to the component and advantageously affects the result of the heating of the component.
  • angles of incidence with which the laser beams hit the particular surface or each surface of the component to be heated are adjusted to the contour of the respective surface. This improves the homogeneity of the energy application, in particular to components such as turbine blades which have surfaces of different curvatures.
  • heating of the component is measured and, as a function thereof, the heating process is controlled in such a way that the power of the individual laser device or of each laser device is adjusted for achieving an intended temperature setpoint value.
  • This provides for adherence to the intended temperature setpoint value which is advantageous in particular when the temperature setpoint value of the heating is to be maintained over a longer period of time during processing of the component.
  • FIG. 1 shows a highly simplified representation including a component to be heated for explaining a first embodiment of the method according to the present invention
  • FIG. 2 shows a highly simplified representation including a component to be heated for explaining a second embodiment of the method according to the present invention
  • FIG. 3 shows a highly simplified representation including a component to be heated for explaining a third embodiment of the method according to the present invention.
  • FIGS. 1 through 3 each show different exemplary embodiments of the method according to the present invention.
  • FIG. 1 shows in highly simplified form a turbine blade 10 of a high-pressure turbine of an aircraft engine.
  • the object of the present invention is to heat turbine blade 10 of the high-pressure turbine prior to and/or during further processing. Further processing of turbine blade 10 may mean, for example, a process known as hardfacing.
  • At least one laser device is used as the energy source for heating or pre-heating the component.
  • Diode lasers are preferably used as laser devices. The use of diode lasers is particularly advantageous. However, other laser radiation sources may be used as energy sources alternatively or additionally to diode lasers. CO 2 lasers, Nd lasers, YAG lasers, or eximer lasers should be mentioned here as examples.
  • turbine blade 10 to be heated is irradiated by the laser devices on two sides. This means that radiation energy is directed onto turbine blade 10 to be heated or the respective surfaces from two irradiation directions.
  • FIG. 1 shows first arrows 11 as well as second arrows 12 .
  • First arrows 11 indicate the irradiation of turbine blade 10 to be heated from a first irradiation direction and second arrows 12 indicate the irradiation of the very same from a second irradiation direction.
  • the two irradiation directions in the sense of arrows 11 and 12 are used to irradiate two different surfaces of turbine blade 10 .
  • Turbine blade 10 is heated by the laser radiation.
  • turbine blade 10 is irradiated from four directions.
  • FIG. 2 shows first arrows 13 , second arrows 14 , third arrows 15 , and fourth arrows 16 .
  • First arrows 13 indicate a first irradiation direction.
  • Second arrows 14 indicate a second irradiation direction and third and fourth arrows 15 , 16 indicate a third and a fourth irradiation direction.
  • Four different surfaces of turbine blade 10 are thereby irradiated.
  • the exact selection or determination of the number of irradiation directions depends on the component to be irradiated and on the type of further processing to be carried out prior to and/or during the irradiation.
  • FIG. 3 shows another exemplary embodiment of the method according to the present invention in which turbine blade 10 to be heated or pre-heated is irradiated via laser devices from four directions.
  • First arrows 17 indicate a first irradiation direction
  • second arrows 18 indicate a second irradiation direction
  • third and fourth arrows 19 , 20 indicate a third and a fourth irradiation direction.
  • the angles of incidence at which the laser beams hit the surfaces of turbine blade 10 to be heated are adjusted to the contour of the respective surfaces.
  • FIG. 3 shows that the laser beams indicated by first arrows 17 hit turbine blade 10 at a different angle than the laser beams indicated by second arrows 18 .
  • turbine blade 10 is heated by using laser devices as energy sources. The energy is applied to turbine blade 10 to be heated contact-free via the surfaces of turbine blade 10 .
  • thermoelectric blade 10 heating or pre-heating of turbine blade 10 and thus the temperatures achieved on the respective surfaces of turbine blade 10 are measured contact-free via the surfaces.
  • This contact-free measurement is carried out using one or multiple pyrometers.
  • One pyrometer for temperature control is preferably used for each irradiation direction or for each surface of turbine blade 10 to be irradiated or heated.
  • Two pyrometers for temperature measurement on the respective surfaces would be used in exemplary embodiment of FIG. 1 and four pyrometers in the exemplary embodiments according to FIGS. 3 and 4 . This yields the direct result that not only the energy application but also the temperature measurement take place contact-free via the surfaces of turbine blade 10 .
  • Heating or pre-heating of the component, monitored with the aid of the contact-free temperature measurement, is used for regulating heating of turbine blade 10 . Therefore, part of the object of the present invention is that one or each pyrometer measures the temperature on the respective surface of turbine blade 10 and that an appropriate measuring signal is conveyed to a regulating device (not shown). These measuring signals are processed by the regulating device in such a way that an intended temperature setpoint value is achieved on the respective surface.
  • the power output of the laser devices is influenced by the regulating device for this purpose. After the intended temperature setpoint value is reached, the power control of the respective laser device takes over further temperature regulation.
  • diode lasers are preferably used as laser devices. Particularly advantageous is the use of diode lasers which have a linear power output under linear control. It is preferred in particular that heating or pre-heating takes place in a power range of 200 Watts to 800 Watts when diode lasers are used.
  • diode lasers make it possible to apply radiation energy having a narrowly limited specific wavelength to turbine blade 10 to be heated.
  • Focal distances having positive, negative, or parallel dispersion of the laser radiation energy may be used.
  • the defined wavelength of the diode lasers enables particularly good and defined limiting of the energy dispersion. This makes it possible that the surface of turbine blade 10 to be heated may be accurately irradiated and heated.
  • FIGS. 1 through 3 show the parallel energy radiation from each of the irradiation directions.
  • turbine blade 10 is heated in particular in connection with further processing of turbine blade 10 to be carried out prior to and/or during heating.
  • One type of processing where heating or pre-heating of turbine blade 10 is required is the process known as hardfacing or laser beam hardfacing.
  • Laser beam hardfacing is primarily used for maintenance and repair of gas turbines, aircraft engines in particular, and produces a metallurgical bonding of base materials and additives.
  • Laser beam hardfacing is used for maintenance and repair in connection with wear areas on turbine blades, the wear areas being primarily the leading edges of the turbine blades of high-pressure turbines.
  • the method according to the present invention for heating or pre-heating turbine blades 10 may be used particularly advantageously in such laser beam hardfacing.
  • the method according to the present invention is used in laser beam hardfacing for pre-heating the base material or the turbine blade to be maintained or repaired. These are heated using diode lasers as described above in connection with the method according to the present invention.
  • a temperature setpoint value of approximately 950° C. may be reached after an average heating period of 30 s.
  • Laser hardfacing may be started after 40 s, the time difference of 10 s being used for homogenizing the temperature within the turbine blade to be processed. Separate laser devices are subsequently used for the actual laser hardfacing.
US10/556,644 2003-05-17 2004-04-17 Method for heating components Abandoned US20070017607A1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE10322344A DE10322344A1 (de) 2003-05-17 2003-05-17 Verfahren zur Erwärmung von Bauteilen
DE103223444 2003-05-17
PCT/DE2004/000812 WO2004105436A1 (de) 2003-05-17 2004-04-17 Verfahren zur erwärmung von bauteilen

Publications (1)

Publication Number Publication Date
US20070017607A1 true US20070017607A1 (en) 2007-01-25

Family

ID=33394728

Family Applications (1)

Application Number Title Priority Date Filing Date
US10/556,644 Abandoned US20070017607A1 (en) 2003-05-17 2004-04-17 Method for heating components

Country Status (5)

Country Link
US (1) US20070017607A1 (ja)
EP (1) EP1625771B1 (ja)
JP (1) JP4500815B2 (ja)
DE (1) DE10322344A1 (ja)
WO (1) WO2004105436A1 (ja)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20140065320A1 (en) * 2012-08-30 2014-03-06 Dechao Lin Hybrid coating systems and methods
US10520919B2 (en) * 2017-05-01 2019-12-31 General Electric Company Systems and methods for receiving sensor data for an operating additive manufacturing machine and mapping the sensor data with process data which controls the operation of the machine

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP5611757B2 (ja) * 2010-10-18 2014-10-22 株式会社東芝 加熱補修装置および加熱補修方法
JP6050141B2 (ja) * 2013-02-22 2016-12-21 三井造船株式会社 硬化肉盛溶接装置及び方法
WO2023162253A1 (ja) * 2022-02-28 2023-08-31 ヤマザキマザック株式会社 付加製造方法、付加製造システム、及び、付加製造プログラム

Citations (20)

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US3938418A (en) * 1973-12-14 1976-02-17 Gustav Wagner Maschinenfabrik Circular saw blade
US4315130A (en) * 1978-03-03 1982-02-09 Hitachi, Ltd. Method of treating object by laser beam and apparatus therefor
US4539462A (en) * 1983-01-24 1985-09-03 Westinghouse Electric Corp. Robotic laser beam delivery apparatus
US4857699A (en) * 1987-01-30 1989-08-15 Duley Walter W Means of enhancing laser processing efficiency of metals
US5080474A (en) * 1988-12-27 1992-01-14 Isamu Miyamoto Laser beam shaping device
US5493445A (en) * 1990-03-29 1996-02-20 The United States Of America As Represented By The Secretary Of The Navy Laser textured surface absorber and emitter
US5701669A (en) * 1995-12-21 1997-12-30 Mtu Motoren- Und Turbinen-Union Muenchen Gmbh Repair method for lengthening turbine blades
US5759641A (en) * 1996-05-15 1998-06-02 Dimitrienko; Ludmila Nikolaevna Method of applying strengthening coatings to metallic or metal-containing surfaces
US5841098A (en) * 1996-09-27 1998-11-24 Daimler-Benz Aerospace Airbus Gmbh Method and apparatus for laser welding sectional members onto large-format aluminum structural components
US6078022A (en) * 1997-12-30 2000-06-20 Lsp Technologies, Inc. Laser peening hollow core gas turbine engine blades
US6270619B1 (en) * 1998-01-13 2001-08-07 Kabushiki Kaisha Toshiba Treatment device, laser annealing device, manufacturing apparatus, and manufacturing apparatus for flat display device
US20040074572A1 (en) * 2000-07-29 2004-04-22 Erwin Bayer Method and device for hardening a metal component by plasma pulse technology
US6752593B2 (en) * 2001-08-01 2004-06-22 Lsp Technologies, Inc. Articles having improved residual stress profile characteristics produced by laser shock peening
US6759626B2 (en) * 2001-08-01 2004-07-06 L&P Technologies, Inc. System for laser shock processing objects to produce enhanced stress distribution profiles
US6833405B1 (en) * 1998-07-31 2004-12-21 E. I. Du Pont De Nemours And Company Compositions containing liquid crystalline polymers
US6857255B1 (en) * 2002-05-16 2005-02-22 Fisher-Barton Llc Reciprocating cutting blade having laser-hardened cutting edges and a method for making the same with a laser
US6861612B2 (en) * 2001-01-25 2005-03-01 Jimmie Brooks Bolton Methods for using a laser beam to apply wear-reducing material to tool joints
US20060252189A1 (en) * 2002-05-17 2006-11-09 Nobuo Sasaki Method and apparatus for crystallizing semiconductor with laser beams
US7154067B2 (en) * 2002-07-03 2006-12-26 Thk Co., Ltd. Hardening method and apparatus utilizing laser beams
US20080053972A1 (en) * 2002-03-12 2008-03-06 Mitsuboshi Diamond Industrial Co., Ltd. Method and apparatus for processing brittle material

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JPS57185918A (en) * 1981-05-06 1982-11-16 Hitachi Ltd Method and apparatus for heating metal by laser irradiation
JPS58221222A (ja) * 1982-06-16 1983-12-22 Sumitomo Metal Ind Ltd 耐食性鉄鋼の製造方法
JPS63248587A (ja) * 1987-04-03 1988-10-14 Toshiba Corp タ−ビンロ−タおよびその肉盛溶接方法
JPH058062A (ja) * 1991-07-03 1993-01-19 Toshiba Corp レーザ加工装置
JP3272534B2 (ja) * 1994-03-14 2002-04-08 三菱重工業株式会社 Ａｌ合金のレーザー溶接方法
JP3256090B2 (ja) * 1994-08-11 2002-02-12 松下電器産業株式会社 レーザ加熱ツール、レーザ加熱装置および方法
JPH09302410A (ja) * 1996-05-13 1997-11-25 Toshiba Corp レーザ焼入れ装置
DE19720652A1 (de) * 1996-05-17 1997-11-20 Siemens Ag Beheizungsvorrichtung und Verfahren zur Erwärmung eines Bauteils
JP3686319B2 (ja) * 2000-08-30 2005-08-24 株式会社日立製作所 ガスタービン動翼の溶接方法

Patent Citations (20)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3938418A (en) * 1973-12-14 1976-02-17 Gustav Wagner Maschinenfabrik Circular saw blade
US4315130A (en) * 1978-03-03 1982-02-09 Hitachi, Ltd. Method of treating object by laser beam and apparatus therefor
US4539462A (en) * 1983-01-24 1985-09-03 Westinghouse Electric Corp. Robotic laser beam delivery apparatus
US4857699A (en) * 1987-01-30 1989-08-15 Duley Walter W Means of enhancing laser processing efficiency of metals
US5080474A (en) * 1988-12-27 1992-01-14 Isamu Miyamoto Laser beam shaping device
US5493445A (en) * 1990-03-29 1996-02-20 The United States Of America As Represented By The Secretary Of The Navy Laser textured surface absorber and emitter
US5701669A (en) * 1995-12-21 1997-12-30 Mtu Motoren- Und Turbinen-Union Muenchen Gmbh Repair method for lengthening turbine blades
US5759641A (en) * 1996-05-15 1998-06-02 Dimitrienko; Ludmila Nikolaevna Method of applying strengthening coatings to metallic or metal-containing surfaces
US5841098A (en) * 1996-09-27 1998-11-24 Daimler-Benz Aerospace Airbus Gmbh Method and apparatus for laser welding sectional members onto large-format aluminum structural components
US6078022A (en) * 1997-12-30 2000-06-20 Lsp Technologies, Inc. Laser peening hollow core gas turbine engine blades
US6270619B1 (en) * 1998-01-13 2001-08-07 Kabushiki Kaisha Toshiba Treatment device, laser annealing device, manufacturing apparatus, and manufacturing apparatus for flat display device
US6833405B1 (en) * 1998-07-31 2004-12-21 E. I. Du Pont De Nemours And Company Compositions containing liquid crystalline polymers
US20040074572A1 (en) * 2000-07-29 2004-04-22 Erwin Bayer Method and device for hardening a metal component by plasma pulse technology
US6861612B2 (en) * 2001-01-25 2005-03-01 Jimmie Brooks Bolton Methods for using a laser beam to apply wear-reducing material to tool joints
US6752593B2 (en) * 2001-08-01 2004-06-22 Lsp Technologies, Inc. Articles having improved residual stress profile characteristics produced by laser shock peening
US6759626B2 (en) * 2001-08-01 2004-07-06 L&P Technologies, Inc. System for laser shock processing objects to produce enhanced stress distribution profiles
US20080053972A1 (en) * 2002-03-12 2008-03-06 Mitsuboshi Diamond Industrial Co., Ltd. Method and apparatus for processing brittle material
US6857255B1 (en) * 2002-05-16 2005-02-22 Fisher-Barton Llc Reciprocating cutting blade having laser-hardened cutting edges and a method for making the same with a laser
US20060252189A1 (en) * 2002-05-17 2006-11-09 Nobuo Sasaki Method and apparatus for crystallizing semiconductor with laser beams
US7154067B2 (en) * 2002-07-03 2006-12-26 Thk Co., Ltd. Hardening method and apparatus utilizing laser beams

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20140065320A1 (en) * 2012-08-30 2014-03-06 Dechao Lin Hybrid coating systems and methods
US10520919B2 (en) * 2017-05-01 2019-12-31 General Electric Company Systems and methods for receiving sensor data for an operating additive manufacturing machine and mapping the sensor data with process data which controls the operation of the machine

Also Published As

Publication number Publication date
EP1625771A1 (de) 2006-02-15
JP2007537877A (ja) 2007-12-27
JP4500815B2 (ja) 2010-07-14
WO2004105436A1 (de) 2004-12-02
DE10322344A1 (de) 2004-12-02
EP1625771B1 (de) 2012-08-29

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Owner name: MTU AERO ENGINES GMBH, GERMANY

Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNORS:CZERNER, STEFAN OLIVER;EMILJANOW, KLAUS;REEL/FRAME:017436/0459;SIGNING DATES FROM 20051102 TO 20051115

STCB Information on status: application discontinuation

Free format text: ABANDONED -- AFTER EXAMINER'S ANSWER OR BOARD OF APPEALS DECISION