WO2006021983A1 - ロータの補修方法及びロータ補修装置 - Google Patents
ロータの補修方法及びロータ補修装置 Download PDFInfo
- Publication number
- WO2006021983A1 WO2006021983A1 PCT/JP2004/012061 JP2004012061W WO2006021983A1 WO 2006021983 A1 WO2006021983 A1 WO 2006021983A1 JP 2004012061 W JP2004012061 W JP 2004012061W WO 2006021983 A1 WO2006021983 A1 WO 2006021983A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- rotor
- repaired
- repair
- coating
- spray gun
- Prior art date
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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
- C23C4/00—Coating by spraying the coating material in the molten state, e.g. by flame, plasma or electric discharge
- C23C4/01—Selective coating, e.g. pattern coating, without pre-treatment of the material to be coated
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K9/00—Arc welding or cutting
- B23K9/04—Welding for other purposes than joining, e.g. built-up welding
- B23K9/044—Built-up welding on three-dimensional surfaces
- B23K9/046—Built-up welding on three-dimensional surfaces on surfaces of revolution
- B23K9/048—Built-up welding on three-dimensional surfaces on surfaces of revolution on cylindrical surfaces
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23P—METAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
- B23P6/00—Restoring or reconditioning objects
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23P—METAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
- B23P6/00—Restoring or reconditioning objects
- B23P6/002—Repairing turbine components, e.g. moving or stationary blades, rotors
- B23P6/007—Repairing turbine components, e.g. moving or stationary blades, rotors using only additive methods, e.g. build-up welding
-
- 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
- C23C4/00—Coating by spraying the coating material in the molten state, e.g. by flame, plasma or electric discharge
- C23C4/02—Pretreatment of the material to be coated, e.g. for coating on selected surface areas
-
- 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
- C23C4/00—Coating by spraying the coating material in the molten state, e.g. by flame, plasma or electric discharge
- C23C4/12—Coating by spraying the coating material in the molten state, e.g. by flame, plasma or electric discharge characterised by the method of spraying
- C23C4/129—Flame spraying
-
- 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
- C23C4/00—Coating by spraying the coating material in the molten state, e.g. by flame, plasma or electric discharge
- C23C4/18—After-treatment
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K2101/00—Articles made by soldering, welding or cutting
- B23K2101/001—Turbines
Definitions
- the present invention relates to a rotor repair method and a rotor repair device for repairing a damaged portion by forming a sprayed coating on a damaged portion to be repaired, for example, in a rotor used in a turbine generator.
- FIG. 7 is a schematic configuration diagram showing a structure of a conventional turbine generator. Turbine generator
- stator 2 In general, it is composed of a stator 2, a rotor 1, and a journal bearing 3 that rotatably supports the rotor 1.
- the stator 2 includes a stator iron core 2a and a stator coil 2b inserted into a slot formed in the stator iron core 2a.
- the rotor 1 cools the rotor coil la inserted in a slot (not shown) formed in the rotor body, the end ring lb for fixing the rotor coil la, the rotor 1 and the stator 2.
- the end of the rotor 1 is provided with a rotor coupling Id for connecting to a gas turbine or a steam turbine, and a journal portion le rotatably supported by the journal bearing 3.
- Item 1 suffers damage during transportation and transportation, and suffers from repairs such as cutting the damaged part of rotor 1 by machining and improving peripheral equipment.
- the journal part le of the rotor 1 that is rotatably supported by the journal bearing 3 has a damaged part 4 due to foreign matter, abnormalities during operation and part life. There is a case.
- the rotor diameter (rotor diameter) If is reduced to the size indicated by lg by machining or the like. Yes.
- journal bearing 3 is also manufactured again according to the rotor diameter If reduced by this lg. There is a need. For this reason, it has led to a decrease in operating rate due to long-term shutdown and an increase in manufacturing costs.
- Patent Document 1 and Patent Document 2 described below are conventional methods for manufacturing a rotating body.
- the manufacturing method of Patent Document 1 does not cause a problem such as a gap due to a difference in thermal expansion or seizure in a sliding portion where the casing contacts the rotating body in an oil pump or other rotating machine.
- the purpose is to increase wear resistance.
- Patent Document 1 discloses a metal material having wear resistance, for example, steel, using a thermal spraying device at a contact portion with a light alloy rotating body housed in a light alloy casing. After that, at least the edge portion of the rotating body is subjected to pressure treatment, for example, shot beung.
- Patent Document 2 is intended to provide a thermal spray roll that can be used as an iron-making process tool without coating and having an excellent functional thermal spray coating.
- a thermal spray coating of 20 zm 200 xm with the composition of tungsten carbide (WC) and cobalt (Co) force is formed on the surface of the roll substrate, and Mo, Ni, Cr, Co, Al, Y, AlO, Cr C, TiO, any metal, one or more metals
- a functional film of a metal compound, ceramics or cermet is coated.
- Patent Document 1 is Japanese Patent Laid-Open No. 4-232244.
- Patent Document 2 is Japanese Patent Laid-Open No. 9-20975.
- the present invention has been made to solve the above-described problems.
- the damage to the rotor can be reduced by shortening the periodic inspection period with less thermal damage to the rotor base material, reducing the repair cost, and reducing the machine cost.
- a rotor repair method and a rotor repair device for the purpose of improving the reliability of the machine are provided.
- the invention corresponding to claim 1 has a frame speed of 600 m / sec—3000 m / sec, with respect to a damaged portion to be repaired of a rotor rotatably supported by a bearing.
- This is a method for repairing a rotor in which the damaged portion is repaired by forming a thermal spray coating on a high-speed flame spraying apparatus having a particle velocity of 500 m / sec-2000 m / sec.
- the invention corresponding to claim 12 includes a thermal spray gun for forming a thermal spray coating on a portion of the rotor to be repaired while rotating the rotor to be repaired.
- a rotor repairing device comprising a thermal spraying device and a moving device that moves the thermal spraying gun in a horizontal direction or a vertical direction with respect to a rotation axis of the rotor at a moving speed of 0.1 mmZsec pitch.
- the rotor can be repaired with a rotor that can reduce damage to the rotor base material, reduce the periodic inspection period, reduce the repair cost, and improve the reliability of the equipment.
- a method and a rotor repair device can be provided.
- FIG. 1 is a flow chart for explaining a rotor repair method by high-speed flame spraying according to the present invention.
- FIG. 2 is a configuration diagram showing a state where a damaged portion of the rotor in FIG. 1 is repaired by a high-speed flame spraying process.
- FIG. 3A is a diagram of an experimental result showing a defect occurrence rate of a boundary surface that is generated when a damaged portion of the rotor of FIG. 1 is formed by a high-speed flame spraying process.
- FIG. 3B is a cross-sectional view of the boundary surface in the case where the corner finishing angle exceeds 45 ° at the boundary surface between the removed portion and the healthy portion of the damaged portion of the rotor in FIG.
- FIG. 4 is a view showing a measurement result of X-ray residual stress generated in the film of the present invention.
- FIG. 5A is a front view showing that the repair of the rotor by high-speed flame spraying of the present invention is repaired at a local power plant.
- FIG. 5B is a left side view of FIG. 5A.
- FIG. 5C is a right side view of FIG. 5A.
- FIG. 6 is a schematic diagram showing that a thermal spray repair system configured for repairing a local power plant according to another embodiment of the present invention is mounted on a movable vehicle.
- FIG. 7 is a schematic diagram showing the structure of a conventional turbine generator.
- FIG. 8A is a schematic diagram showing damage that occurs in a rotor journal supported by a conventional journal bearing.
- FIG. 8B is a schematic diagram showing a state where a damaged portion generated in a rotor journal portion supported by a conventional journal bearing is removed.
- FIG. 9A Schematic diagram showing a state where an error occurred in the machining process during conventional rotor manufacturing.
- FIG. 9B State where an error occurred during the machining process during conventional rotor manufacturing.
- FIG. 1 is a flowchart for explaining a rotor repair method 10 according to a first embodiment of the present invention, which will be specifically described below.
- the damaged part to be repaired generated in the journal le of the rotor 1 which is a result obtained by visual observation by a repairman, will be described later by machining or grinder processing.
- the damaged part is completely removed and shaping is performed.
- the damaged portion to be repaired in the first step S1 is removed, and the shaped surface is roughened by blasting using a blast material and processing conditions described later.
- the surface roughened in the second step S2 is formed into a film with a high-speed flame spraying (HP / HVOF: High Pressure I High Velocity Oxygen Fuel) apparatus described later. carry out.
- HP / HVOF High Pressure I High Velocity Oxygen Fuel
- the coating formed in the third step S3 is subjected to a finishing process by machining or polishing.
- a defect inspection is performed to detect the presence or absence of defects.
- the damaged portion of the rotor 1 is completely removed.
- the reason for shaping is to improve the reliability of the equipment by preventing the progress and expansion of defects due to damage in the repair process to be performed later.
- the removal amount and the removal range of the damaged part need to be determined based on the depth of damage occurring in the damaged part and the extent of the area of the damaged part. Desired from the viewpoint of preventing reliability degradation.
- both end portions in the axial direction that is, the boundary surface 4c between the damage removal portion 4a and the healthy portion 4b is formed into a machining shape having a bottom surface portion and an inclined surface portion.
- the bottom part is formed parallel to the rotation axis, and the inclined part (gradient part) 4d is formed on both ends of the bottom part, and 45 ° or less (0
- the base material surface of the rotor 1 can be uniformly roughened, and also occurs during the formation of the film by the high-speed flame spraying in the third step S3. Defects at the interface 4c can be reduced, and the adhesion of the coating can be improved and the reliability of the thermal spray repair can be improved.
- the effect is further increased.
- an arc surface may be formed instead of the inclined surface 4d.
- the surface of the removed and shaped damaged portion treated in the first step S1 is roughened by the blast treatment in the second step S2, which is performed by high-speed flame spraying in the third step S3. This is because the adhered thermal spray material adheres firmly to the surface of the rotor 1 and improves the adhesion of the film to be formed.
- Particles such as alumina, silica, glass beads, light alloy material, Conorek, and rubber are used as the blasting material in the blasting process in the second step S2. Also, blast processing at a pressure of m N 2 kg 2 - 6 kg N m 2 (. 0. 2-0 6MPa) Les use air or gas pressure, by Rukoto, rough surface to prevent deformation of the rotor 1 surface Can be made. When this surface roughening is performed, the surface of the rotor 1 base material can be roughened three-dimensionally by blasting at a blast angle of 45 ° 90 ° with respect to the surface of the rotor 1 base material. Improved adhesion
- the coating is formed by using a high-speed flame spraying device by spraying a sprayed material at a speed two to three times the speed of sound and impinging on the surface of the substrate of the rotor 1 at a high speed. This is for forming a film by projecting.
- a high-speed flame spraying device By using a high-speed flame spraying device in this way, the coating film formed is dense with few pores, high adhesion, and excellent interparticle bonding force. Can be improved.
- the coating adhesion of the rotor 1 to the base material is further improved by performing high-speed flame spraying on the surface of the base material of the rotor 1 at 45 ° 90 °. At the same time, it is possible to obtain a denser film having fewer pores in the film and having an excellent interparticle bonding force.
- the finishing treatment of the thermal spray coating formed in the third step S3 is performed by machining or polishing.
- the high-speed flame spraying and the high-speed flame spraying in the third step S3 are performed.
- the sprayed coating is shaped to be larger than the original rotor diameter, for example, If in Figs. 8 and 9. This is because the diameter of the repaired part by thermal spraying is returned to the original rotor diameter If and the surface roughness of the design value of the port 1 is restored. At this time, it is possible to greatly improve reliability by finishing so that there is no step on the boundary surface between the repair site and the original rotor 1 base material surface.
- the defect inspection for detecting the presence or absence of defects in the fifth step S5 and the size and quality inspection of the repaired part in the sixth step S6 are necessary steps to provide a sound product. Defects promote peeling of the film and propagation of cracks, and are a cause of reducing the performance of repaired parts. By eliminating defects in these parts, the reliability of repaired products can be improved.
- FIG. 2 shows a damaged portion of the rotor 1 rotatably supported by the journal bearing 3 shown in FIG. 7 or a thrust bearing (not shown) according to the high-speed flame spraying process, which is the third step S3 of FIG.
- FIG. 4 is a view showing a state in which 4 is repaired by using the following high-speed flame spraying device 6.
- the high-speed flame spraying device 6 is equipped with a spray gun 6b that can adjust the velocity of the frame 6a to 600 m / sec—300 m / sec and the particle velocity to 500 m / sec—2000 m / sec.
- the construction conditions of the high-speed flame spraying construction process which is the third process S3 described above, are as follows.
- a thermal spraying device 6 manufactured by JP5000TAFA is used, the base material of the rotor is NiCrMoV steel, and the coating or spraying powder is NiCrMoV steel.
- the fuel is a sink and oxygen, the 4-inch gun barrel, the oxygen flow rate.
- Construction conditions 1850 scfh (8701 / min), kerosene fuel supply rate 5 ⁇ 7 gph (221 / hr), combustion pressure 97 psi (0.7 MPa), gun moving speed 350 mm / sec, powder supply rate 40 g / min, spraying distance 380 mm Thermal sprayed with.
- FIG. 3A shows the defect occurrence rate of the boundary surface 4c that occurs when the coating is formed by the high-speed flame spraying device 6 (defect occurrence rate for the five measurement points in the corner of the repair unit 9).
- FIG. 3B is a cross-sectional view of the boundary surface 4c when the corner finishing angle exceeds 45 ° at the boundary surface 4c of the removed portion 4a and the healthy portion 4b of the damaged portion 4. In this case, a defect occurred at the corner (the part indicated by the arrow).
- Figure 3B shows the defect occurrence rate of the boundary surface 4c that occurs when the coating is formed by the high-speed flame spraying device 6 (defect occurrence rate for the five measurement points in the corner of the repair unit 9).
- FIG. 3C shows the boundary when the angle of the slanted surface 4d (corner finish angle) of the groove 4d at the boundary surface 4c between the removed part 4a and the healthy part 4b of the damaged part is 45 ° or less (excluding 0 °)
- FIG. 4 is a cross-sectional view of the surface 4c. In this case, no defect occurred in the corner.
- 7 is a sprayed material sprayed on the removal part 4a
- 8 shows the sprayed coating
- 9 shows a repaired part.
- the defect occurrence rate is 10% or less. It can be seen that almost no defects occur. As a result, it is possible to reduce the defect occurrence rate, improve the adhesion of the thermal spray coating, and improve the reliability of the thermal spray repair.
- the spray material 7 to be used is a coating material having the same chemical composition and material characteristics as the rotor 1 to be repaired, and is sprayed on the repair 10 of the rotor 1 in the range of 0.020 mm force to 8.0 mm.
- Form film 8 and finish the film surface to a specified thickness with a surface roughness of 6.5S or less (excluding OS, S represents the finish roughness) by machining or polishing.
- the thermal spray material 7 having the same chemical composition and material characteristics as the rotor 1 to be repaired is used because the stress and heat generated in the repair part 9 of the rotor 1 at the time of start / stop, operation, and abnormal operation are used. This is to prevent the deformation due to. Further, the sliding performance can be equivalent to that of the base material of the rotor 1. That is, when a material different from the base material of rotor 1 is used for repair part 9, deformation or thermal stress occurs due to the difference in thermal expansion coefficient or thermal conductivity, which causes vibration during one rotation of the motor. This leads to a significant decrease in device reliability.
- a thick film can be formed by high-speed flame spraying, it has the same shaping function as overlay welding, and does not damage the rotor 1 base material. It can be performed.
- the thermal spray coating 8 formed in the above-mentioned third step S3 is subjected to a finishing process by machining or polishing in the fourth step S4 in consideration of mechanical finishing by high-speed flame spraying.
- machining or polishing in order to form the sprayed coating 8 in advance so as to be larger than the original rotor diameter If, the diameter of the repaired part 9 by spraying is returned to the original rotor diameter If. Both are to return the surface roughness of the design value of the rotor 1 to 6S or less. At this time, it is necessary to finish so that there is no step on the boundary surface 4c between the repair site 9 and the original rotor 1 base material surface.
- FIG. 5 is a diagram for explaining a second embodiment of the present invention.
- the repair method 10 of the rotor 1 by the high-speed flame spraying device 6 in the third step S3 described above is applied to the power plant or repair factory at the site (the turbine generator in which the rotor to be repaired is installed). It is a figure for demonstrating the method of repairing in one place or the place which combined these.
- Fig. 5A is the front view
- Fig. 5B is the left side view of Fig. 5A
- Fig. 5C is the right side view of Fig. 5A.
- Formation of rotor 1, rotor rotating device 14, and thermal spray coating 8 is the field repair target.
- High-speed flame spraying device 6 with spray gun 6b high-speed flame spraying device 6 with spray gun 6b, horizontal spray gun moving device 15 that moves spray gun 6b horizontally relative to the rotation axis of rotor 1, and spray gun 6b as the rotation axis of rotor 1
- it shows that it is configured by a vertical spray gun moving device 16 that moves in the vertical direction.
- the horizontal spray gun transfer device 15 and the vertical spray gun transfer device 16 may be equipped with the vertical spray gun transfer device 16 or may not be the high-speed flame spray device 6. ,.
- the repair method 10 of the rotor 1 is usually performed at the assembly plant, but repairing at the local power plant where the equipment to be repaired is installed shortens the repair period and costs. Reduction is possible.
- the thermal spraying equipment installed as factory equipment can be used.
- Factory-installed thermal spraying equipment includes soundproof rooms, thermal spraying robots and control equipment, dust collectors, cooling water chillers, cranes, and rotor rotating equipment.
- the thermal spray gun 6b is assigned to the rotation axis of the rotor 1 in the horizontal direction 15a and the vertical direction 16a. It shows that the spray gun moving device 15 and 16 can be fixed and repaired.
- a drive mechanism having a ball screw and a stepping motor is provided. Use the spray gun transfer device 15, 16 used.
- a spray gun moving table 17 for moving the spray gun 6b in the horizontal direction 15a and the vertical direction 16a with respect to the rotation axis of the rotor 1 is provided, and the spray gun moving speed is set at 0.1 mm / sec pitch.
- the device can be controlled with Furthermore, during thermal spray repair, the thermal spray gun 6b is moved in the horizontal direction 15a while rotating the rotor 1 in the direction of arrow 14a shown in Fig. 5 (b), and repair is performed by thermal spraying. To do.
- the spray gun 6b When repairing the rotor 1 at the local power plant, the spray gun 6b is fixed to the spray gun moving devices 15 and 16 that can be arbitrarily moved in the horizontal direction 15a and vertical direction 16a with respect to the rotating shaft. The reason is that the spray gun 6b can be moved to an arbitrary position even when the repair portion 9 of the rotor 1 is not limited, and an optimum repair range can be arbitrarily set. In particular, when moving in the vertical direction 16a, since it is necessary to set the spray gun 6b at the center of the rotor diameter If, it is possible to adjust in mm units, which has an excellent effect of high-precision spray repair.
- the spraying gun 6b is fixed to the robot arm, and the robot arm is moved to perform spraying.
- the robot arm is moved to perform spraying.
- the rotor 1 is rotated in the direction of the arrow 14a with a device capable of rotating the rotor 1 in the direction of the arrow 14a, for example, a rotating device having a rotation mechanism such as a lathe. Rotate in the direction and repair the surface of rotor 1 repair part 9.
- the desired thermal spray coating can be uniformly formed on the outer peripheral surface of the rotor 1, and the reliability of repair can be improved.
- the reason why the spray gun moving device 15, 16 using a drive mechanism having a ball screw and a stepping motor is used is that the spray gun moving speed can be controlled at a pitch of 0.1 mm / sec. It prevents shaking and vibration, and gives continuous and stable movement to the spray gun 6b.
- FIG. 6 shows a spray gun 6b, a spray gun moving device 15, 16, a simple soundproof room 19, a cooling water chiller 20, dust collection for field power plant repair according to the third embodiment of the present invention. It is a diagram showing that the spraying repair system 24 composed of the device 21, the generator 22 and the blasting device 23 is mounted on a movable automobile 25 and repaired easily 10 on site.
- the present invention can be used when repairing rotors such as water turbines, gas turbines, and steam turbines, and rotors such as generators.
Abstract
Description
Claims
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP04772022A EP1798302A4 (en) | 2004-08-23 | 2004-08-23 | METHOD AND DEVICE FOR REPAIRING A ROTOR |
PCT/JP2004/012061 WO2006021983A1 (ja) | 2004-08-23 | 2004-08-23 | ロータの補修方法及びロータ補修装置 |
US11/678,072 US20070269608A1 (en) | 2003-02-27 | 2007-02-23 | Rotor repair method and rotor repair apparatus |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
PCT/JP2004/012061 WO2006021983A1 (ja) | 2004-08-23 | 2004-08-23 | ロータの補修方法及びロータ補修装置 |
Related Child Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US11/678,072 Continuation US20070269608A1 (en) | 2003-02-27 | 2007-02-23 | Rotor repair method and rotor repair apparatus |
Publications (1)
Publication Number | Publication Date |
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WO2006021983A1 true WO2006021983A1 (ja) | 2006-03-02 |
Family
ID=35967206
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
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PCT/JP2004/012061 WO2006021983A1 (ja) | 2003-02-27 | 2004-08-23 | ロータの補修方法及びロータ補修装置 |
Country Status (2)
Country | Link |
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EP (1) | EP1798302A4 (ja) |
WO (1) | WO2006021983A1 (ja) |
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TWI842433B (zh) | 2023-03-15 | 2024-05-11 | 中國鋼鐵股份有限公司 | 傳動軸元件的修護方法 |
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EP1898048B1 (en) * | 2005-06-17 | 2011-03-09 | Hitachi, Ltd. | Rotor for steam turbine and process for producing the same |
EP2166125A1 (en) * | 2008-09-19 | 2010-03-24 | ALSTOM Technology Ltd | Method for the restoration of a metallic coating |
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US20170073806A1 (en) * | 2015-09-10 | 2017-03-16 | General Electric Company | Article treatment methods |
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EP1408134A1 (en) * | 2001-06-13 | 2004-04-14 | Mitsubishi Heavy Industries, Ltd. | Method for repairing ni base alloy component |
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US4869936A (en) * | 1987-12-28 | 1989-09-26 | Amoco Corporation | Apparatus and process for producing high density thermal spray coatings |
FI96970C (fi) * | 1994-08-09 | 1996-09-25 | Telatek Oy | Menetelmä teräspintojen kunnostamiseksi |
US6049978A (en) * | 1996-12-23 | 2000-04-18 | Recast Airfoil Group | Methods for repairing and reclassifying gas turbine engine airfoil parts |
US5998755A (en) * | 1997-12-19 | 1999-12-07 | United Technologies Corporation | Tooling assembly for positioning airfoils of a rotary machine |
GB9803561D0 (en) * | 1998-02-19 | 1998-04-15 | Monitor Coatings & Eng | Surface treatment of rotors |
US6575349B2 (en) * | 2001-02-22 | 2003-06-10 | Hickham Industries, Inc. | Method of applying braze materials to a substrate |
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2004
- 2004-08-23 WO PCT/JP2004/012061 patent/WO2006021983A1/ja active Application Filing
- 2004-08-23 EP EP04772022A patent/EP1798302A4/en not_active Withdrawn
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JPS5445638A (en) * | 1977-09-16 | 1979-04-11 | Shinichirou Nakaguchi | Regeneration of grooved roll by using molten metal projection |
JPH11240624A (ja) * | 1997-12-10 | 1999-09-07 | Nippon Yuteku Kk | ロータリーバルブおよびその再生補修方法 |
JP2002105666A (ja) * | 2000-09-28 | 2002-04-10 | Mitsubishi Heavy Ind Ltd | 研磨層、燃焼エンジン、ガスタービン、及び、その製造方法 |
JP2002309999A (ja) * | 2001-04-12 | 2002-10-23 | Toei Giko Kk | 内燃機関のシリンダヘッド補修方法 |
EP1408134A1 (en) * | 2001-06-13 | 2004-04-14 | Mitsubishi Heavy Industries, Ltd. | Method for repairing ni base alloy component |
JP2004018983A (ja) * | 2002-06-19 | 2004-01-22 | Kansai Electric Power Co Inc:The | 円形鋼構造物の内壁面を自動溶射する装置及びその自動溶射方法 |
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Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN114682999A (zh) * | 2022-03-21 | 2022-07-01 | 中建隧道装备制造有限公司 | 一种盾构机中心回转体再制造工艺 |
CN114682999B (zh) * | 2022-03-21 | 2023-07-28 | 中建隧道装备制造有限公司 | 一种盾构机中心回转体再制造工艺 |
TWI842433B (zh) | 2023-03-15 | 2024-05-11 | 中國鋼鐵股份有限公司 | 傳動軸元件的修護方法 |
Also Published As
Publication number | Publication date |
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EP1798302A4 (en) | 2009-12-02 |
EP1798302A1 (en) | 2007-06-20 |
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