WO2004111303A1 - 金属製品の製造方法、金属製品、金属部品の接続方法、及び接続構造体 - Google Patents
金属製品の製造方法、金属製品、金属部品の接続方法、及び接続構造体 Download PDFInfo
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- WO2004111303A1 WO2004111303A1 PCT/JP2004/008212 JP2004008212W WO2004111303A1 WO 2004111303 A1 WO2004111303 A1 WO 2004111303A1 JP 2004008212 W JP2004008212 W JP 2004008212W WO 2004111303 A1 WO2004111303 A1 WO 2004111303A1
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- metal
- electrode
- molded
- build
- concave portion
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Classifications
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- 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
- B23K28/00—Welding or cutting not covered by any of the preceding groups, e.g. electrolytic welding
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23H—WORKING OF METAL BY THE ACTION OF A HIGH CONCENTRATION OF ELECTRIC CURRENT ON A WORKPIECE USING AN ELECTRODE WHICH TAKES THE PLACE OF A TOOL; SUCH WORKING COMBINED WITH OTHER FORMS OF WORKING OF METAL
- B23H1/00—Electrical discharge machining, i.e. removing metal with a series of rapidly recurring electrical discharges between an electrode and a workpiece in the presence of a fluid dielectric
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23H—WORKING OF METAL BY THE ACTION OF A HIGH CONCENTRATION OF ELECTRIC CURRENT ON A WORKPIECE USING AN ELECTRODE WHICH TAKES THE PLACE OF A TOOL; SUCH WORKING COMBINED WITH OTHER FORMS OF WORKING OF METAL
- B23H1/00—Electrical discharge machining, i.e. removing metal with a series of rapidly recurring electrical discharges between an electrode and a workpiece in the presence of a fluid dielectric
- B23H1/04—Electrodes specially adapted therefor or their manufacture
- B23H1/06—Electrode material
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23H—WORKING OF METAL BY THE ACTION OF A HIGH CONCENTRATION OF ELECTRIC CURRENT ON A WORKPIECE USING AN ELECTRODE WHICH TAKES THE PLACE OF A TOOL; SUCH WORKING COMBINED WITH OTHER FORMS OF WORKING OF METAL
- B23H9/00—Machining specially adapted for treating particular metal objects or for obtaining special effects or results on metal objects
- B23H9/001—Disintegrating
-
- 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
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- 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
- C23C26/00—Coating not provided for in groups C23C2/00 - C23C24/00
Definitions
- the present invention relates to a method for manufacturing a metal product, a method for connecting a metal product and a metal component, and a connection structure.
- the series of steps of joining the metal parts includes a step of forming a buildup.
- the product main body is formed by, for example, molding.
- defects such as nests are generated on the surface to be processed of the product main body due to molding.
- a peripheral portion including the defect is removed by grinding to form a concave portion on the surface to be processed of the product body.
- a weld overlay is formed around the recess including the recess by welding.
- the pair of metal parts are joined to each other to form a groove between one metal part and a groove part of the other metal part. To define a recess. Then, a buildup is formed around the recess including the recess by welding. Disclosure of the invention
- the overlay is formed by welding, in other words, the overlay in a high temperature state is formed instantaneously or in a short time around the recess, so that the production of the metal product or At the time of joining the pair of metal parts, the temperature around the concave portion rises sharply. Therefore, there is a problem that the thermal deformation around the concave portion becomes large, resulting in defective production of the metal product and defective connection of the pair of metal components.
- a first feature of the present invention is a method for manufacturing a metal product, comprising: a molding step of molding a product main body; A defect removing step of removing a defect including a defect generated on the surface of the product main body by molding to form a concave portion on the processed surface of the product main body; After the completion of the process, using a molded body formed from a metal powder or a molded electrode composed of the heat-treated molded body, in a liquid or air having an electrically insulating property, the vicinity of the concave portion including the concave portion A pulsed discharge is generated between the electrode and the forming electrode, and the discharge energy causes the material of the forming electrode or a reactant of the material to deposit, diffuse, and Z or weld around the concave portion, and gradually, And a step of forming a build-up around the concave portion.
- a second feature of the present invention is a method of joining a pair of metal parts, and by abutting the pair of metal parts, a groove portion of one metal part and another metal part are joined.
- a pulse-like discharge is generated between the periphery of the recess including the recess and the molding electrode, and the discharge energy causes the material of the molding electrode or a reactant of the material to surround the recess.
- FIG. 1 is a view showing an electric discharge machine according to a first embodiment.
- FIG. 2 is a partial sectional view of a cylinder according to the first embodiment.
- FIG. 3 is a diagram illustrating a method for manufacturing a metal product according to the first embodiment.
- FIG. 4 is a diagram illustrating a method for manufacturing a metal product according to the first embodiment.
- FIG. 5 is a diagram illustrating a method for manufacturing a metal product according to the first embodiment.
- FIG. 6 is a diagram illustrating a method for manufacturing a metal product according to the first embodiment.
- FIG. 7 is a diagram illustrating a method for manufacturing a metal product according to the first embodiment.
- FIG. 8 is a partial sectional view of a cylinder according to a second embodiment.
- FIG. 9 is a diagram illustrating a method for manufacturing a metal product according to the second embodiment.
- FIG. 10 is a diagram illustrating a method for manufacturing a metal product according to the second embodiment.
- FIG. 11 is a diagram illustrating a method for manufacturing a metal product according to the second embodiment.
- FIG. 12 is a diagram illustrating a method for manufacturing a metal product according to the second embodiment.
- Garden 13] is a diagram illustrating a method for manufacturing a metal product according to the second embodiment.
- FIG. 14 is a partial sectional view of a cylinder according to a third embodiment.
- Garden 15 is a diagram illustrating a method for manufacturing a metal product according to the third embodiment.
- Garden 16 is a diagram illustrating a method for manufacturing a metal product according to the third embodiment.
- Garden 17 is a diagram illustrating a method for manufacturing a metal product according to the third embodiment.
- FIG. 18 is a view showing a connection structure according to a fourth embodiment.
- Garden 19 is a diagram illustrating a method for joining metal parts according to the fourth embodiment.
- FIG. 20 is a view for explaining a method for joining metal parts according to the fourth embodiment.
- Garden 21 is a diagram illustrating a method for joining metal parts according to the fourth embodiment.
- the electric discharge machine 1 includes a bed 3 extending in the X-axis direction and the Y-axis direction, and the bed 3 is provided with a column 5 extending in the Z-axis direction. .
- the bed 3 is provided with a table 7 which can be moved in the X-axis direction by driving the X-axis servomotor 9 and can be moved in the Y-axis direction by driving the Y-axis servomotor 11. Can be moved to
- the table 7 is provided with a processing tank 13 for storing an electrically insulating liquid S such as oil, and a support plate 15 is provided in the processing tank 13.
- the support plate 15 is provided with a jig 17 on which a metal product or the like described later can be set. Note that the jig 17 is electrically connected to the power supply 19 via the support plate 15, and the specific configuration of the jig 17 can be changed according to a metal product or the like.
- the machining head 21 is provided on the ram 5, and the machining head 21 is provided with a Z-axis servo motor. Can be moved in the Z-axis direction by driving the motor 23.
- the processing head 21 can be moved relatively in the X-axis direction with respect to the tape holder 7.
- the processing head 21 can be moved relatively to the table 7 in the Y-axis direction.
- the caroe head 21 is provided with a first holder 29 for holding the formed electrode 25 or the formed electrode 27.
- a hard electrode having wear resistance is provided near the first holder 29 in the processing head 21.
- a second holder 33 for holding 31 is provided. Note that the first holder 29 and the second honoreda 33 are electrically connected to the power supply 19. The specific configuration of the shaped electrodes 25 and 27 will be described later.
- the cylinder 35 as a metal part according to the first embodiment is one of the components of the gas turbine, and includes a cylinder main body 37 as a product main body.
- a recess 39 is formed on the outer peripheral surface of the cylinder body 37 by discharge energy, and a buildup 41 is formed by discharge energy on a periphery 39 ′ including the recess 39.
- the details of the recess 39 and the overlay 41 will be described later.
- the method for manufacturing a metal product according to the first embodiment is a method for manufacturing a cylinder 35 as a metal part, and includes the above-described electric discharge machine 1, forming electrode 25, hard electrode 31, The heat treatment furnace 43 shown in FIG. 7 is used.
- the molded electrode 25 is formed of a powder of a material having the same composition as the base material of the cylinder body 37, a powder of a material having a composition similar to that of the base material of the cylinder body 37, or a material of the cylinder body 37. It is constituted by a compact formed by compressing a material having a coefficient of thermal expansion close to that of the base material by pressing with a press, or by a heat treatment in a vacuum furnace or the like.
- the base material of the cylinder body 37 is, for example, AMS (Aerospace Material Specifications).
- AMS Advanced Space Material Specifications
- various nickel alloys are materials having similar compositions
- cobalt or cobalt alloys are materials having similar thermal expansion coefficients.
- electrode 25 instead of molding by compression, electrode 25 may be molded by slurry injection, MIM (Metal Injection Molding), thermal spraying, or the like.
- the hard electrode 31 is made of a solid material such as graphite, a tungsten alloy, or a copper alloy.
- the method of manufacturing a metal product according to the first embodiment includes the following (1-1) forming step, (1-2) defect removing step, (1-3) overlaying Process, (1-4) excess material removing process, and (1-5) heat treatment process.
- a mold (not shown) is used, and a cylinder body 37 as a product body is formed by fabrication. Note that, as shown in FIG. 3, the molding of the cylinder main body 37 has an object nest D, which is one of the defects, on the outer peripheral surface as the surface to be processed of the cylinder main body 37.
- the cylinder body 37 is set on the jig 17. Next, by moving the table 7 in the X-axis direction and the Y-axis direction by driving the X-axis servomotor 9 and the Y-axis servomotor 11, the vicinity of the object nest D 'as the periphery of the defect including the object nest D is obtained.
- the cylinder body 37 is positioned so that the hard electrodes 31 face each other. In some cases, it is sufficient to simply move the tape holder 7 in one of the X-axis direction and the Y-axis direction.
- a pulse-like discharge is generated between the periphery D 'of the object and the hard electrode 31.
- the cavity P can be removed by the discharge energy, and the concave portion 39 can be formed on the outer peripheral surface of the cylinder main body 37.
- the hard electrode 31 is reciprocated in the Z-axis direction by a small amount by the driving of the Z-axis servomotor 23 integrally with the machining head 21.
- the table 7 is moved in the X-axis direction and the Y-axis direction by driving the X-axis servomotor 9 and the Y-axis servomotor 11, thereby forming a concave.
- the cylinder body 37 is positioned so that the outer periphery 39 'and the molding electrode 25 face each other. In some cases, it is sufficient to simply move the table 7 in one of the X-axis direction and the Y-axis direction.
- a pulse-like discharge is generated between the periphery 39 ′ of the concave portion and the forming electrode 25.
- the material of the molded electrode 25 or a reactant of the material is deposited, diffused, and / or welded around the recess 39 ′ by the discharge energy, and gradually around the recess 39.
- An overlay 41 can be formed on the '.
- deposition, diffusion, and / or welding means “deposition,” “diffusion,” “welding,” “a mixture of two phenomena of deposition and diffusion,” and “a mixture of two of deposition and deposition. It is meant to include any of the following: “phenomena”, “mixing phenomena of diffusion and welding” and “mixing phenomena of deposition, diffusion and welding”.
- the size of the overlay 41 formed in the step (1-3) is set to be larger than the size of the recess 39.
- the outer edge of the build-up 41 is spread by 0.5 mm or more outside the outer edge of the recess 39, and the thickness of the build-up 41 is greater than the thickness required to fill the recess 39. 0.3mm or more thicker. Therefore, diffusion bonding between particles inside the overlay 41 can be generated.
- a part of the overlay 41 is a surplus portion 41f protruding from the concave portion 39.
- the table 7 is moved in the X-axis direction and the Y-axis direction by driving the X-axis servo motor 9 and the Y-axis servo motor 11, thereby forming the cladding 41 and the hard electrode. Position the cylinder body 37 so that 31 faces each other. In some cases, it is sufficient to move the table 7 in either the X-axis direction or the Y-axis direction.
- the hard electrode 31 is moved to the cylinder body 37 in the X-axis direction. In addition to the relative movement, the hard electrode 31 is reciprocated in the Z-axis direction by a small amount by the driving of the Z-axis servomotor 23 integrally with the processing head 21.
- the cylinder body 37 is removed from the jig 17 and set at a predetermined position of the heat treatment furnace 43. Then, as shown in FIG. 7, the cladding 41 together with the cylinder body 37 is kept at a high temperature in a vacuum or in the atmosphere by the heat treatment furnace 43. Thereby, heat treatment can be applied to the buildup 41 so that diffusion bonding between particles inside the buildup 41 proceeds, and the production of the cylinder 35 as a metal product is completed.
- the temperature and time of the heat treatment are, for example, when the overlay 41 is made of a nickel alloy or a cobalt alloy, at a high temperature of 1050 ° C for 20 minutes, and subsequently at a high temperature of 760 ° C. 4 hours to warm.
- the (1-4) excess wall removal step or the (1-5) heat treatment step may be omitted, or the order of the (1-4) excess wall removal step and the (1-5) heat treatment step may be changed. It is also possible.
- a grinder may be used to remove the surroundings D 'or remove the excess 41f.
- the periphery of a defect including a defect such as a crack may be removed.
- the discharge energy locally acts on an extremely small portion, and the buildup 41 is gradually formed by depositing, diffusing, and Z or welding the material of the molded electrode 25 in the concave portion 39. Therefore, when the cylinder 35 is manufactured, the temperature around the concave portion 39 ′ of the cylinder body 37 does not suddenly increase. Since the overlay 41 is formed by discharge energy, the boundary between the overlay 41 and the base material of the cylinder body 37 has a structure in which the composition ratio is inclined.
- the (1-4) excess No porous structure is left on the surface of the overlay 41 after the removal process.
- the temperature around the concave portion 39 ′ in the cylinder main body 37 does not rise sharply. Thermal deformation of the periphery 39 'is sufficiently suppressed, and the defective production of the cylinder 35 is almost eliminated.
- the overlay 41 can be firmly connected to the cylinder body 37, the overlay 41 is less likely to peel off from the base material of the cylinder body 37, and the quality of the cylinder 35 can be stabilized. Wear.
- the tensile strength of the overlay 41 can be increased, the mechanical strength of the periphery 39 ′ of the recess in the cylinder body 37 can be increased.
- the overlay 41 has the thin film 41a made of a high-density structure, it is possible to suppress seepage of fluid from the cylinder 35.
- a cylinder 45 as a metal part which is a target of the method for manufacturing a metal product according to the second embodiment will be briefly described.
- the cylinder 45 as a metal part according to the second embodiment includes a cylinder body 37 as a product body, similarly to the cylinder 35 according to the first embodiment.
- a concave portion 39 is formed by discharge energy.
- a cladding group 49 composed of two layers of cladding 47 is formed by discharge energy. The details of the cladding group 49 will be described later.
- the method for manufacturing a metal product according to the second embodiment is a method for manufacturing a cylinder 45 as a metal part, and includes the above-described electric discharge machine 1, forming electrode 25, hard electrode 31, The heat treatment furnace 43 is used.
- the method for manufacturing a metal product according to the second embodiment includes the following (2-1) forming step, (2-2) defect removing step, and (2-3) first step. It has a build-up process, (2-4) a thin film process, (2-5) a second build-up process, (2-6) a surplus removal process, and (2-7) a heat treatment process. .
- the table 7 is moved in the X-axis direction and the Y-axis direction by driving the X-axis servo motor 9 and the Y-axis servo motor 11, thereby forming the periphery 39 'of the concave portion.
- the cylinder body 37 is positioned so that the molded electrodes 25 face each other. In some cases, it is sufficient to simply move the table 7 in one of the X-axis direction and the Y-axis direction.
- a pulse-like discharge is generated between the periphery 39 ′ of the concave portion and the molded electrode 25.
- the material of the molded electrode 25 or a reactant of the material is deposited, diffused, and / or welded around the concave portion 39 ′ by the discharge energy, and gradually around the concave portion 39 ′.
- the overlay 47 can be formed on the '.
- the table 7 is moved in the X-axis direction and the Y-axis direction by driving the X-axis servomotor 9 and the Y-axis servomotor 11, so that the overlay 47 and the hard electrode 31 are moved.
- the cylinder body 37 is positioned so that the cylinder faces each other. In some cases, it is sufficient to move the table 7 in either the X-axis direction or the Y-axis direction.
- a pulse-like discharge is generated between the overlay 47 and the hard electrode 31. As a result, as shown in FIG.
- the surface of the build-up 47 can be melted by the discharge energy to generate a thin film 47a having a high-density structure on the surface of the build-up 47.
- the hard electrode 31 is reciprocated in the Z-axis direction by a small amount by the driving of the Z-axis servomotor 23 integrally with the pump head 21.
- the table 7 is moved in the X-axis direction and the Y-axis direction by driving the X-axis servo motor 9 and the Y-axis servo motor 11, thereby forming the thin film 47a on the build-up 47.
- the cylinder body 37 is positioned so that the molding electrode 25 and the molding electrode 25 face each other. In some cases, it is sufficient to simply move the table 7 in one of the X-axis direction and the Y-axis direction.
- a pulse-like discharge is generated between the thin film 47 a on the build-up 47 and the forming electrode 25.
- the material of the molded electrode 25 or a reactant of the material is deposited, diffused, and / or welded on the thin film 47 a on the build-up 47 by a discharge energy, as shown in FIG.
- a cladding group 49 consisting of two layers of cladding 47 can be formed in the recess 39.
- the size of the cladding group 49 formed in the (2-5) second cladding step is set to be larger than the size of the concave portion 39.
- the outer edge of the cladding group 49 is spread out by more than 0.5 mm outside the outer edge of the recess 39, and the thickness of the cladding group 49 is necessary to fill the recess 39. It is designed to be at least 0.3 mm thicker than the thickness.
- a part of the cladding group 49 is a surplus 49f protruding from the recess 39. Therefore, diffusion bonding between particles inside the cladding group 49 can be generated.
- the X-axis servo motor 9 and the Y-axis servo motor By moving the table 7 in the X-axis direction and the Y-axis direction by driving the table 11, the cylinder main body 37 is positioned so that the overlay 49 and the hard electrode 31 face each other. In some cases, it is sufficient to move the table 7 in either the X-axis direction or the ⁇ -axis direction.
- the hard electrode 31 is moved relatively to the cylinder body 37 in the X-axis direction, and the hard electrode 31 is integrated with the head 21 by driving the Z-axis servomotor 23. Reciprocate a small amount in the Z-axis direction.
- the cylinder body 37 is removed from the jig 17 and set at a predetermined position of the heat treatment furnace 43. Then, as shown in FIG. 13, the cladding group 49 together with the cylinder body 37 is kept at a high temperature in a vacuum or in the atmosphere by the heat treatment furnace 43. Thereby, heat treatment can be applied to the cladding group 49 so that diffusion bonding between particles inside the cladding group 49 proceeds, and the production of the cylinder 45 as a metal product is completed.
- the temperature and time of the heat treatment are, for example, when the cladding group 49 is made of a nickel alloy or a cobalt alloy, the temperature is set to a high temperature of 1050 ° C for 20 minutes, and then 760 ° C. The high temperature is 4 hours.
- the (2-6) excess thickness removal step or the (2-7) heat treatment step may be omitted, or the order of the (2-6) excess thickness removal step and the (2-7) heat treatment step may be changed. It is also possible.
- a pulsed discharge may be generated in the electrically insulating air.
- a pulsed discharge may be generated in the electrically insulating air.
- the periphery of a defect including a defect such as a crack may be removed.
- the discharge energy acts locally on an extremely small portion, and the build-up group 49 gradually forms the material or the like of the forming electrode 25 by depositing, diffusing, and Z or welding the concave portion 39. Therefore, when manufacturing the cylinder 45, the temperature around the concave portion 39 'in the cylinder body 37 does not rise rapidly.
- the boundary between the cladding group 49 and the base material of the cylinder body 37 has a structure in which the composition ratio is inclined. Can be firmly connected to the cylinder body 37.
- the tensile strength of the cladding group 49 can be increased.
- the temperature around the recess 39 ′ in the cylinder body 37 does not rise rapidly, so that the recess in the cylinder body 37 Thermal deformation of the periphery 39 'is sufficiently suppressed, and manufacturing failure of the cylinder 45 is almost eliminated.
- the cladding group 49 can be firmly bonded to the cylinder body 37, the cladding group 49 is less likely to peel from the base material of the cylinder body 37, and the quality of the cylinder 45 can be stabilized. it can.
- the mechanical strength of the periphery 39 ′ of the concave portion in the cylinder body 37 can be increased.
- the cladding group 49 has the thin films 47a and 49a made of a high-density structure
- a cylinder 51 as a metal part which is a target of the method for manufacturing a metal product according to the third embodiment, will be briefly described.
- the cylinder 51 as a metal part according to the third embodiment is similar to the cylinder 51 according to the first embodiment.
- a cylinder body 37 as a product body is provided, and a recess 39 is formed on the outer peripheral surface of the cylinder body 37 by discharge energy.
- a cladding group 53 including a multi-layered cladding 47 is formed by discharge energy. The details of the cladding group 53 will be described later.
- the method for manufacturing a metal product according to the third embodiment is a method for manufacturing a cylinder 51 as a metal part, and includes the above-described electric discharge machine 1, forming electrode 25, hard electrode 31, The heat treatment furnace 43 is used.
- the method of manufacturing a metal product according to the third embodiment includes the following (3-1) molding step, (3-2) defect removing step, and (3-3) overlaying. And (3-4) a thin film step, (3-5) a repetition step, (3-6) an excess thickness removing step, and (3-7) a heat treatment step.
- the (3-3) overlaying step and the (3-4) are alternately repeated.
- the discharge energy forms a thin film 47a on the surface of the overlay 47 of each layer, and gradually forms the overlay group 53 composed of the multilayer overlay 47 in the recess 39.
- the size of the cladding group 53 formed in the (3-5) repetition step is set to be larger than the size of the concave portion 39.
- the outer edge of the cladding group 53 is The thickness of the cladding group 53 is set to be at least 0.3 mm thicker than that required to fill the recess 39 by spreading the outer edge of the outer periphery of the outer edge 9 by more than 0.5 mm. Therefore, diffusion bonding between particles inside the cladding group 53 can be generated.
- the table 7 is moved in the X-axis direction and the Y-axis direction by driving the X-axis servomotor 9 and the Y-axis servomotor 11, so that the cladding group 53 and the hard electrodes are formed. Position the cylinder body 37 so that 31 faces each other. In some cases, it is sufficient to simply move the table 7 in one of the X-axis direction and the Y-axis direction.
- a pulse-like discharge is generated between the hard electrode 31 and the build-up group 53.
- the excess energy 53f can be removed while the discharge energy generates the thin film 53a having a high-density structure.
- the hard electrode 31 is moved relatively to the cylinder body 37 in the X-axis direction, and the hard electrode 31 is integrated with the caroe head 21 by driving the Z-axis servo motor 23. Reciprocate a small amount in the Z-axis direction.
- the cylinder body 37 is removed from the jig 17 and set at a predetermined position of the heat treatment furnace 43. Then, as shown in FIG. 17, the cladding group 49 together with the cylinder body 37 is kept at a high temperature in a vacuum or in the atmosphere by the heat treatment furnace 43. Thus, heat treatment can be applied to the cladding group 53 so that diffusion bonding between particles inside the cladding group 53 proceeds, and the production of the cylinder 51 as a metal product is completed.
- the temperature and the time of the heat treatment are, for example, when the cladding group 49 is made of a nickel alloy or a cobalt alloy, the temperature is raised to a high temperature of 1050 ° C for 20 minutes, and then 760 ° C. The high temperature is 4 hours.
- the (3-6) excess thickness removal step or the (3-7) heat treatment step may be omitted, or the order of the (3-6) excess thickness removal step and the (3-7) heat treatment step may be changed. It is also possible.
- a pulse-like discharge may be generated in the electrically insulating air.
- a pulse-like discharge may be generated in the electrically insulating air.
- a grinder may be used to remove the surroundings D 'of the object cavity or remove the excess material 53f.
- the surroundings of a defect including a defect such as a crack may be removed.
- the discharge energy acts locally on an extremely small portion, and the build-up group 53 gradually forms the material and the like of the forming electrode 25 by depositing, diffusing, and Z or welding to the concave portion 39. Therefore, when manufacturing the cylinder 51, the temperature around the concave portion 39 'in the cylinder body 37 does not rise sharply.
- the boundary between the cladding group 53 and the base material of the cylinder body 37 has a structure in which the composition ratio is inclined. Can be firmly connected to the cylinder body 37.
- the temperature of the periphery 39 ′ of the recess in the cylinder body 37 does not rise sharply. Thermal deformation of the periphery 39 'is sufficiently suppressed, and manufacturing defects of the cylinder 51 are almost eliminated.
- the cladding group 53 can be firmly bonded to the cylinder body 37, the cladding group 53 is less likely to peel off from the base material of the cylinder body 37, and the quality of the cylinder 51 can be stabilized. it can.
- the tensile strength of the cladding group 53 can be increased, the mechanical strength of the periphery 39 ′ of the concave portion in the cylinder body 37 can be increased. [0107] Further, since the cladding group 53 has the thin films 41a and 53a made of a high-density structure, the seepage of fluid from inside the cylinder 51 can be suppressed.
- a joint structure 55 according to the fourth embodiment will be described with reference to FIG.
- the joint structure 55 includes a pair of metal parts 57.59 to be joined in abutted state, and the pair of metal parts 57.59 has a groove portion 57a. 57b, respectively. . Further, a recess 61 is defined by a groove 57a of one metal part 57 and a groove 59a of the other metal part 59, and a build-up 63 Are formed by the discharge energy.
- the overlay 63 uses the shaped electrode 27 shown in FIG. 1 to form a pulse-like shape between the periphery 61 ′ of the recess including the recess 61 and the shaped electrode 27 in an electrically insulating liquid or air. It is gradually formed by generating a discharge and depositing, diffusing, and Z or welding the material of the molded electrode 27 or a reactant of the material on the periphery 61 'of the concave portion by the discharge energy.
- the molded electrode 27 is made of a powder of a material having the same composition as the base material of the metal component 57.59, a powder of a material having a composition similar to that of the base material of the metal component 57.59, or
- the metal part 57.59 is composed of a compact formed from powder of a material having a coefficient of thermal expansion close to the coefficient of thermal expansion of the base material by pressing with a press, or a heat-treated compact such as a vacuum furnace. It is what is done.
- the base material of the metal part 57.59 is, for example, a stainless alloy containing 18% chromium and 8% nickel in iron, other stainless alloys having different contents have similar compositions. And a material having a similar thermal expansion coefficient to that of cobalt or a conoret alloy.
- the forming electrode 27 may be formed by slurry injection, MIM (Metal Injection Molding), thermal spraying or the like instead of forming by compression.
- the method for joining metal parts according to the fourth embodiment is a method for joining a pair of metal parts 57 and 59, and includes the above-described electric discharge machine 1, forming electrode 27, and heat treatment furnace 43. Used.
- the method of joining metal parts according to the fourth embodiment is described below. Such a (4-1) butting, (4-2) overlaying step, and (4-3) heat treatment step are provided.
- the pair of metal parts 57 and 59 are set on the jig 17 so that the pair of metal parts 57 and 59 abut each other.
- the groove 61 can be defined by the groove 57a of one metal part 57 and the groove 59a of the other metal part 59.
- the table 7 is moved in the X-axis direction and the Y-axis direction by driving the X-axis servo motor 9 and the Y-axis servo motor 11, thereby forming the periphery of the recess 61 '.
- the pair of metal parts 57 and 59 are positioned so that the electrodes 27 face each other. In some cases, it is sufficient to simply move the table 7 in one of the X-axis direction and the Y-axis direction.
- a pulse-like discharge is generated between the periphery 61 'of the concave portion and the forming electrode 27.
- the material of the molded electrode 27 or a reactant of the material is deposited, diffused, and / or welded around the recess 61 ′ by the discharge energy, and gradually formed.
- the overlay 63 can be formed around the concave portion 61 '.
- the size of the overlay 63 formed in the (4-2) overlay process is made larger than the size of the concave portion 61.
- the outer edge of the build-up 63 is spread by 0.5 mm or more outside the outer edge of the recess 61, and the thickness of the build-up 63 is the thickness required to carry the recess 61. It is made to be 0.3 mm or more thicker than that. Therefore, diffusion bonding between particles inside the cladding 63 can be generated.
- the pair of metal parts 57.59 is removed from the jig 17 and set at a predetermined position of the heat treatment furnace 43. Then, the cladding 63 is kept at a high temperature in a vacuum or in the air together with the pair of metal parts 57.59 by the heat treatment furnace 43. Thereby, heat treatment can be applied to the overlay 63 so that diffusion bonding between the particles inside the overlay 63 proceeds, and the joining of the pair of metal parts 57.59 is completed.
- the temperature and time of the heat treatment are, for example, when the cladding 63 is made of a nickel alloy or a cobalt alloy, the temperature is set to a high temperature of 1050 ° C for 20 minutes, and then to a high temperature of 760 ° C. 4 hours to warm.
- the heat treatment step may be omitted.
- the excess thickness of the overlay 63 may be removed.
- a pulsed discharge may be generated in the air having electrical insulation. Absent.
- the discharge energy locally acts on an extremely small portion, and the overlay 63 is gradually formed by depositing, diffusing, and / or welding the material of the molded electrode 27 in the concave portion 61. Therefore, when joining the pair of metal parts 57.59, the temperature around the recess 61 'in the metal part 57.59 does not rise rapidly.
- the boundary between the overlay 63 and the base material of the metal component 57.59 has a structure in which the composition ratio is inclined. Can be firmly bonded to metal parts 5 7.59.
- the temperature around the recess 61 ′ in the metal parts 57.59 does not rise rapidly. Therefore, the thermal deformation of the periphery 61 'of the concave portion in the metal part 57.59 is sufficiently suppressed, and the joint failure between the pair of metal parts 57.59 is almost eliminated.
- the overlay 63 can be firmly bonded to the metal component 57.59 and the tensile strength of the overlay 63 can be increased, the joining state of the pair of metal components 57.59 becomes strong, Paraphrase Then, the mechanical strength of the joint structure 55 can be increased.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Manufacturing & Machinery (AREA)
- Thermal Sciences (AREA)
- Physics & Mathematics (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Other Surface Treatments For Metallic Materials (AREA)
- Electrical Discharge Machining, Electrochemical Machining, And Combined Machining (AREA)
- Pressure Welding/Diffusion-Bonding (AREA)
- Manufacturing Of Electrical Connectors (AREA)
Abstract
Description
Claims
Priority Applications (6)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CA2528886A CA2528886C (en) | 2003-06-11 | 2004-06-11 | Production method of metal product, metal product, connection method of metal component and connection structure |
CN2004800207849A CN1826430B (zh) | 2003-06-11 | 2004-06-11 | 金属制品及其制造方法、金属部件连接方法及连接结构体 |
US10/560,070 US7713361B2 (en) | 2003-06-11 | 2004-06-11 | Metal product producing method, metal product, metal component connecting method, and connection structure |
EP04745806A EP1659196B1 (en) | 2003-06-11 | 2004-06-11 | Metal product producing method, metal product, metal component connecting method, and connection structure |
JP2005506938A JPWO2004111303A1 (ja) | 2003-06-11 | 2004-06-11 | 金属製品の製造方法、金属製品、金属部品の接続方法、及び接続構造体 |
US12/632,436 US20100080648A1 (en) | 2003-06-11 | 2009-12-07 | Production method of metal product, metal product, connection method of metal component and connection structure |
Applications Claiming Priority (4)
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JP2003167025 | 2003-06-11 | ||
JP2003-167025 | 2003-06-11 | ||
JP2003-167074 | 2003-06-11 | ||
JP2003167074 | 2003-06-11 |
Related Child Applications (1)
Application Number | Title | Priority Date | Filing Date |
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US12/632,436 Division US20100080648A1 (en) | 2003-06-11 | 2009-12-07 | Production method of metal product, metal product, connection method of metal component and connection structure |
Publications (1)
Publication Number | Publication Date |
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WO2004111303A1 true WO2004111303A1 (ja) | 2004-12-23 |
Family
ID=33554388
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
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PCT/JP2004/008212 WO2004111303A1 (ja) | 2003-06-11 | 2004-06-11 | 金属製品の製造方法、金属製品、金属部品の接続方法、及び接続構造体 |
Country Status (9)
Country | Link |
---|---|
US (2) | US7713361B2 (ja) |
EP (2) | EP2371477A2 (ja) |
JP (2) | JPWO2004111303A1 (ja) |
CN (2) | CN1826430B (ja) |
CA (1) | CA2528886C (ja) |
RU (1) | RU2325257C2 (ja) |
SG (1) | SG163437A1 (ja) |
TW (1) | TWI248474B (ja) |
WO (1) | WO2004111303A1 (ja) |
Cited By (4)
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JP2007077476A (ja) * | 2005-09-16 | 2007-03-29 | Hitachi Ltd | 表面処理方法 |
US20090200274A1 (en) * | 2006-03-24 | 2009-08-13 | Foerster Ralf | Electrode Arrangement for Electrical Discharge Machining on an Electrically Non-Conductive Material |
WO2011016516A1 (ja) * | 2009-08-06 | 2011-02-10 | 株式会社Ihi | 穴を閉塞する方法 |
CN112981471A (zh) * | 2021-02-08 | 2021-06-18 | 广东工业大学 | 一种高定域性三维电沉积装置及方法 |
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US8079893B2 (en) * | 2006-08-03 | 2011-12-20 | Sharp Kabushiki Kaisha | Method of remedying glass substrate defect |
FR2932106B1 (fr) * | 2008-06-06 | 2010-05-21 | Airbus France | Procede de depose d'un revetement visant a ameliorer l'ecoulement laminaire |
WO2011118219A1 (ja) * | 2010-03-26 | 2011-09-29 | 京浜精密工業株式会社 | 金属部材結合構造及び装置 |
EP2681345B1 (fr) * | 2011-03-01 | 2019-01-16 | Safran Aircraft Engines | Procede de realisation d'une piece metallique telle qu'un renfort d'aube de turbomachine |
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- 2004-06-11 CN CN2004800207849A patent/CN1826430B/zh not_active Expired - Lifetime
- 2004-06-11 RU RU2005141497/02A patent/RU2325257C2/ru active
- 2004-06-11 CA CA2528886A patent/CA2528886C/en not_active Expired - Fee Related
- 2004-06-11 WO PCT/JP2004/008212 patent/WO2004111303A1/ja active Application Filing
- 2004-06-11 CN CN2011100391815A patent/CN102126063A/zh active Pending
- 2004-06-11 JP JP2005506938A patent/JPWO2004111303A1/ja active Pending
- 2004-06-11 EP EP11169018A patent/EP2371477A2/en not_active Withdrawn
- 2004-06-11 EP EP04745806A patent/EP1659196B1/en not_active Expired - Lifetime
- 2004-06-11 TW TW093116935A patent/TWI248474B/zh not_active IP Right Cessation
- 2004-06-11 US US10/560,070 patent/US7713361B2/en active Active
- 2004-06-11 SG SG200704557-8A patent/SG163437A1/en unknown
-
2009
- 2009-12-07 US US12/632,436 patent/US20100080648A1/en not_active Abandoned
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2010
- 2010-12-06 JP JP2010271884A patent/JP5328755B2/ja not_active Expired - Fee Related
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Cited By (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2007077476A (ja) * | 2005-09-16 | 2007-03-29 | Hitachi Ltd | 表面処理方法 |
JP4492503B2 (ja) * | 2005-09-16 | 2010-06-30 | 株式会社日立製作所 | 表面処理方法 |
US20090200274A1 (en) * | 2006-03-24 | 2009-08-13 | Foerster Ralf | Electrode Arrangement for Electrical Discharge Machining on an Electrically Non-Conductive Material |
WO2011016516A1 (ja) * | 2009-08-06 | 2011-02-10 | 株式会社Ihi | 穴を閉塞する方法 |
CN102471894A (zh) * | 2009-08-06 | 2012-05-23 | 株式会社Ihi | 封闭孔的方法 |
RU2496914C1 (ru) * | 2009-08-06 | 2013-10-27 | АйЭйчАй КОРПОРЕЙШН | Способ закрытия отверстий |
CN102471894B (zh) * | 2009-08-06 | 2013-11-27 | 株式会社Ihi | 封闭孔的方法 |
JP5354016B2 (ja) * | 2009-08-06 | 2013-11-27 | 株式会社Ihi | 穴を閉塞する方法 |
CN112981471A (zh) * | 2021-02-08 | 2021-06-18 | 广东工业大学 | 一种高定域性三维电沉积装置及方法 |
Also Published As
Publication number | Publication date |
---|---|
EP1659196B1 (en) | 2011-08-10 |
CA2528886C (en) | 2012-02-07 |
JPWO2004111303A1 (ja) | 2006-07-20 |
US7713361B2 (en) | 2010-05-11 |
JP2011094235A (ja) | 2011-05-12 |
CN1826430B (zh) | 2011-12-28 |
JP5328755B2 (ja) | 2013-10-30 |
RU2325257C2 (ru) | 2008-05-27 |
CN102126063A (zh) | 2011-07-20 |
EP1659196A4 (en) | 2008-09-17 |
TW200523399A (en) | 2005-07-16 |
US20100080648A1 (en) | 2010-04-01 |
US20070059905A1 (en) | 2007-03-15 |
EP2371477A2 (en) | 2011-10-05 |
TWI248474B (en) | 2006-02-01 |
CN1826430A (zh) | 2006-08-30 |
SG163437A1 (en) | 2010-08-30 |
EP1659196A1 (en) | 2006-05-24 |
RU2005141497A (ru) | 2006-06-27 |
CA2528886A1 (en) | 2004-12-23 |
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