WO2022131037A1 - Procédé de fabrication d'objet moulé et objet moulé - Google Patents

Procédé de fabrication d'objet moulé et objet moulé Download PDF

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Publication number
WO2022131037A1
WO2022131037A1 PCT/JP2021/044591 JP2021044591W WO2022131037A1 WO 2022131037 A1 WO2022131037 A1 WO 2022131037A1 JP 2021044591 W JP2021044591 W JP 2021044591W WO 2022131037 A1 WO2022131037 A1 WO 2022131037A1
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WO
WIPO (PCT)
Prior art keywords
flow path
wing
forming
manufacturing
welded
Prior art date
Application number
PCT/JP2021/044591
Other languages
English (en)
Japanese (ja)
Inventor
貴宏 篠崎
Original Assignee
株式会社神戸製鋼所
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
Priority claimed from JP2021156815A external-priority patent/JP7525458B2/ja
Application filed by 株式会社神戸製鋼所 filed Critical 株式会社神戸製鋼所
Priority to CN202180073594.7A priority Critical patent/CN116457080A/zh
Publication of WO2022131037A1 publication Critical patent/WO2022131037A1/fr

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
    • B01F23/00—Mixing according to the phases to be mixed, e.g. dispersing or emulsifying
    • B01F23/50—Mixing liquids with solids
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
    • B01F27/00—Mixers with rotary stirring devices in fixed receptacles; Kneaders
    • B01F27/60—Mixers with rotary stirring devices in fixed receptacles; Kneaders with stirrers rotating about a horizontal or inclined axis
    • B01F27/72—Mixers with rotary stirring devices in fixed receptacles; Kneaders with stirrers rotating about a horizontal or inclined axis with helices or sections of helices
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
    • B01F35/00—Accessories for mixers; Auxiliary operations or auxiliary devices; Parts or details of general application
    • B01F35/90—Heating or cooling systems
    • B01F35/95—Heating or cooling systems using heated or cooled stirrers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
    • B22F10/00—Additive manufacturing of workpieces or articles from metallic powder
    • B22F10/20—Direct sintering or melting
    • B22F10/22—Direct deposition of molten metal
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
    • B22F3/00—Manufacture of workpieces or articles from metallic powder characterised by the manner of compacting or sintering; Apparatus specially adapted therefor ; Presses and furnaces
    • B22F3/10—Sintering only
    • B22F3/105—Sintering only by using electric current other than for infrared radiant energy, laser radiation or plasma ; by ultrasonic bonding
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
    • B22F3/00—Manufacture of workpieces or articles from metallic powder characterised by the manner of compacting or sintering; Apparatus specially adapted therefor ; Presses and furnaces
    • B22F3/12—Both compacting and sintering
    • B22F3/16—Both compacting and sintering in successive or repeated steps
    • 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
    • B23K26/00—Working by laser beam, e.g. welding, cutting or boring
    • B23K26/20—Bonding
    • B23K26/21—Bonding by welding
    • 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
    • B23K26/00—Working by laser beam, e.g. welding, cutting or boring
    • B23K26/34—Laser welding for purposes other than joining
    • 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
    • B23K9/02—Seam welding; Backing means; Inserts
    • B23K9/032—Seam welding; Backing means; Inserts for three-dimensional seams
    • 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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B33—ADDITIVE MANUFACTURING TECHNOLOGY
    • B33Y—ADDITIVE MANUFACTURING, i.e. MANUFACTURING OF THREE-DIMENSIONAL [3-D] OBJECTS BY ADDITIVE DEPOSITION, ADDITIVE AGGLOMERATION OR ADDITIVE LAYERING, e.g. BY 3-D PRINTING, STEREOLITHOGRAPHY OR SELECTIVE LASER SINTERING
    • B33Y10/00—Processes of additive manufacturing
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B33—ADDITIVE MANUFACTURING TECHNOLOGY
    • B33Y—ADDITIVE MANUFACTURING, i.e. MANUFACTURING OF THREE-DIMENSIONAL [3-D] OBJECTS BY ADDITIVE DEPOSITION, ADDITIVE AGGLOMERATION OR ADDITIVE LAYERING, e.g. BY 3-D PRINTING, STEREOLITHOGRAPHY OR SELECTIVE LASER SINTERING
    • B33Y80/00—Products made by additive manufacturing
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D29/00—Details, component parts, or accessories
    • F04D29/60—Mounting; Assembling; Disassembling

Definitions

  • the present invention relates to a method for manufacturing a modeled object and a modeled object.
  • a 3D printer using a metal material melts a metal powder or a metal wire by using a heat source such as a laser or an arc, and laminates the molten metal to form a modeled object.
  • the cooling performance of the wing portion is improved. May be planned.
  • the formation of the internal flow path can be easily performed by machining such as cutting if the internal flow path has a simple shape, but it is difficult to form the internal flow path by machining when the internal flow path has a complicated shape.
  • the manufacturing process is complicated and it is difficult to remove the core after molding.
  • the present invention has been made in view of the above circumstances, and an object thereof is a method for manufacturing a modeled object and a modeled object capable of easily and at low cost to manufacture a modeled object having a flow path along a wing portion. It is to provide things.
  • the present invention has the following configuration.
  • (1) A method for manufacturing a shaped object having a shaped portion having a wing portion formed by laminating a welded bead obtained by laminating and solidifying a filler metal on the outer periphery of a rod-shaped shaft body. , When modeling the shaped portion, a wing portion forming step of forming the welded bead along the extending direction of the wing portion to form the wing portion is performed, and the wing portion forming step is performed.
  • a hollow portion is formed by leaving a gap between the welded beads so that the wing flow path surrounded by the welded beads can be formed along the extending direction of the welded beads in the axial cross-sectional view.
  • a wing flow path formed along the wing in the modeling portion The internal flow path formed around the shaft body and Have, Modeled object.
  • a modeled object having a flow path along a wing portion can be easily manufactured at low cost.
  • FIG. 3 is a cross-sectional view taken along the line I-I in FIG. It is sectional drawing along the line II-II in FIG.
  • FIG. 3 is a cross-sectional view taken along the line I-I in FIG. It is sectional drawing along the line II-II in FIG.
  • It is a schematic schematic block diagram of the manufacturing system for manufacturing a modeled object. It is a schematic side view along the axial direction of the modeled product in the middle of manufacturing which explains the manufacturing process of the modeled object. It is a schematic side view along the axial direction of the modeled product in the middle of manufacturing which explains the manufacturing process of the modeled object.
  • FIGS. (A) to (C) are schematic plan views of each of the shaped parts. It is a figure explaining the process of forming a curved cross section of a wing channel, and FIGS. (A) to (C) are schematic cross-sectional views of each of the shaped portions.
  • FIG. 1 is a perspective view of a modeled object W manufactured by the manufacturing method of the present invention.
  • FIG. 2 is a perspective view of the cooling flow path 61 formed inside the modeled object W.
  • the modeled object W has a shaft body 51 and a modeled portion 53 formed on the outer periphery of the shaft body 51, and a blade (wing portion) 55 is formed on the modeled portion 53. Has been done.
  • the shaft body 51 is, for example, a round bar body having a circular cross section such as a steel bar.
  • the blade 55 of the modeling portion 53 provided on the outer periphery of the shaft body 51 is formed in a shape in which a protruding portion toward the outer periphery is spirally twisted in the axial direction.
  • the modeling portion 53 having the blade 55 is formed by forming a welded bead around the shaft body 51 and laminating it. The surface of the modeling portion 53 formed by the welding bead is then machined by cutting to form a target shape.
  • the modeled object W has a cooling flow path 61 inside thereof.
  • the cooling flow path 61 is a flow path through which a cooling medium such as cooling water flows, and the model W is cooled by flowing the cooling medium through the cooling flow path 61.
  • the cooling flow path 61 has a pair of blade flow paths 63, an internal flow path 65, and a plurality of connection flow paths 67.
  • the blade flow path 63 is provided inside each blade 55 and extends along the blade 55.
  • Each wing flow path 63 is provided at a position symmetrical with respect to each other with the axis of the model W as the center.
  • These wing portion flow paths 63 are formed in the modeling portion 53 in the modeling object W.
  • the internal flow path 65 is provided on the center side of the blade flow path 63 in the model W, and is formed in a spiral shape in the axial direction.
  • the internal flow path 65 is formed on the outer peripheral portion of the shaft body 51.
  • connection flow paths 67 are formed near both ends of the modeled object W, and each is formed along the radial direction. Each connecting flow path 67 communicates with the end of the wing flow path 63. One of the connecting flow paths 67A and 67B near both ends of the modeled object W is communicated with the end of the internal flow path 65, respectively.
  • the other connection flow path 67C near one end of the model W is provided with a supply port 69A at its end, and the other connection flow path 67D near the other end of the model W is provided with a discharge port at its end. 69B is provided.
  • a cooling medium is sent from the supply port 69A, and this cooling medium is discharged from the discharge port 69B.
  • the cooling medium supplied from the supply port 69A is sent to one wing flow path 63 through the connection flow path 67C and flows in the wing flow path 63.
  • the cooling medium is sent to the internal flow path 65 through the connection flow path 67B and flows in the internal flow path 65.
  • the cooling medium is sent to the other blade flow path 63 through the connection flow path 67A and flows through the blade flow path 63.
  • the cooling medium is sent out to the connection flow path 67D and discharged from the discharge port 69B.
  • FIG. 3 is a cross-sectional view taken along the line I-I in FIG.
  • FIG. 4 is a cross-sectional view taken along the line II-II in FIG.
  • the blade flow path 63 is formed as a trapezoidal trapezoidal cross-sectional portion 63A in the axial cross-sectional view in the regions on both ends in the axial direction.
  • the region on the central side in the axial direction is formed as a curved cross-sectional portion 63B having a curved shape such as a bow shape or an arch shape in the axial cross-sectional view. There is.
  • the shape in the axial cross-sectional view is gradually changed from the trapezoidal cross-sectional portion 63A on both ends in the axial direction to the curved cross-sectional portion 63B on the central side in the axial direction.
  • the area on both ends in the axial direction is a trapezoidal cross-sectional portion 63A formed in a trapezoidal shape, and the region on the central side in the axial direction is a curved cross-sectional portion 63B formed in a curved shape.
  • the cross-sectional shape of the blade flow path 63 is gradually changed from trapezoidal to curved from both ends in the axial direction to the center while maintaining the same cross-sectional area at any axial position. .. That is, in FIG. 3, the surface of the blade flow path 63 along the outer surface of the blade has a trapezoidal shape parallel to the outer surface of the blade. As a result, the wall thickness from the outer surface of the wing portion to the wing portion flow path 63 can be made uniform, and the wing portion can be cooled evenly. Further, in FIG. 4, the surface of the blade flow path 63 along the outer surface of the blade has a surface parallel to the outer surface of the blade. Even in this case, the wall thickness from the outer surface of the wing portion to the wing portion flow path 63 can be made uniform, and the wing portion can be cooled evenly.
  • FIG. 5 is a schematic schematic configuration diagram of a manufacturing system 100 for manufacturing a model W.
  • the manufacturing system 100 having this configuration includes a laminated modeling device 11, a cutting device 12, a controller 13 that comprehensively controls the laminated modeling device 11 and the cutting device 12, and a power supply device 15.
  • the laminated modeling device 11 has a welding robot 19 having a torch 17 on the tip shaft, and a filler material supply unit 21 that supplies the filler material (welding wire) M to the torch 17.
  • the torch 17 holds the filler metal M in a state of protruding from the tip.
  • the welding robot 19 is an articulated robot, and the torch 17 provided on the tip shaft is supported so that the filler metal M can be continuously supplied.
  • the position and posture of the torch 17 can be arbitrarily set three-dimensionally within the range of the degree of freedom of the robot arm.
  • the torch 17 has a shield nozzle (not shown), and shield gas is supplied from the shield nozzle.
  • the arc welding method used in this configuration may be either a consumable electrode type such as shielded metal arc welding or carbon dioxide arc welding, or a non-consumable electrode type such as TIG welding or plasma arc welding. It will be selected as appropriate.
  • a contact tip is arranged inside the shield nozzle, and the filler metal M to which the melting current is supplied is held by the contact tip.
  • the torch 17 generates an arc from the tip of the filler M in a shield gas atmosphere while holding the filler M.
  • the filler material M is fed from the filler material supply unit 21 to the torch 17 by a feeding mechanism (not shown) attached to a robot arm or the like. Then, when the filler metal M that is continuously fed is melted and solidified while moving the torch 17, a linear welded bead that is a melt-solidified body of the filler metal M is formed.
  • the heat source for melting the filler metal M is not limited to the above-mentioned arc.
  • a heat source by another method such as a heating method using a combination of an arc and a laser, a heating method using plasma, a heating method using an electron beam or a laser may be adopted.
  • the amount of heating can be controlled more finely, the state of the welded bead can be maintained more appropriately, and the quality of the model W can be further improved.
  • any commercially available welding wire can be used.
  • it is defined by MAG welding and MIG welding solid wire (JIS Z 3312) for mild steel, high tension steel and low temperature steel, arc welding flux containing wire for mild steel, high tension steel and low temperature steel (JIS Z 3313), etc. Wire can be used.
  • the cutting device 12 includes a cutting robot 41.
  • the cutting robot 41 is an articulated robot like the welding robot 19, and is provided with a metal processing tool 45 such as an end mill or a grinding wheel at the tip of the tip arm 43.
  • a metal processing tool 45 such as an end mill or a grinding wheel at the tip of the tip arm 43.
  • the cutting robot 41 cuts and processes the shaft body 51 or the modeling portion 53 formed on the shaft body 51 with a metal processing tool 45.
  • the controller 13 has a CAD / CAM unit 31, an orbit calculation unit 33, a storage unit 35, and a control unit 37 to which these are connected.
  • the CAD / CAM unit 31 creates shape data of the model W to be manufactured, and then divides the data into a plurality of layers to generate layer shape data representing the shape of each layer.
  • the trajectory calculation unit 33 obtains the movement trajectory of the torch 17 based on the generated layer shape data. Further, the trajectory calculation unit 33 obtains the movement trajectory of the metal processing tool 45 based on the shape data.
  • the storage unit 35 stores data such as the shape data of the modeled object W, the generated layer shape data, the movement locus of the torch 17, and the movement locus of the metal processing tool 45.
  • the control unit 37 executes a drive program based on the layer shape data stored in the storage unit 35 and the movement locus of the torch 17 to drive the welding robot 19. That is, the welding robot 19 moves the torch 17 while melting the filler metal M with an arc based on the movement locus of the torch 17 generated by the trajectory calculation unit 33 in response to a command from the controller 13. Further, the control unit 37 executes a drive program based on the shape data stored in the storage unit 35 or the movement locus of the metalworking tool 45 to drive the cutting robot 41. As a result, the shaft body 51 or the modeling portion 53 is cut by the metal processing tool 45 provided on the tip arm 43 of the cutting robot 41.
  • the manufacturing system 100 having the above configuration moves the torch 17 by driving the welding robot 19 and rotates the shaft body 51 around the axis along the movement locus of the torch 17 generated from the set layer shape data.
  • the welded bead made of the molten filler M is laminated around the shaft body 51 by the torch 17.
  • a modeled object W in which a modeled portion 53 made of a welded bead is formed on the outer periphery of the shaft body 51 is manufactured.
  • the modeled object W is formed into a designed outer shape by cutting with the metal processing tool 45 of the cutting device 12. Both ends of the shaft body 51 are supported by a support portion 49 provided on the base 47 and are rotatable.
  • 6 to 8 are schematic side views along the axial direction of the model W in the middle of manufacturing for explaining the manufacturing process of the model W.
  • the outer periphery of the shaft body 51 is cut to form the groove portion 59.
  • the outer peripheral surface of the shaft body 51 is cut by the metal processing tool 45 of the cutting device 12 while rotating the shaft body 51 having both ends supported by the support portion 49.
  • the metal processing tool 45 is moved from one end side to the other end side of the shaft body 51.
  • a spiral groove portion 59 along the axial direction is formed on the outer periphery of the shaft body 51.
  • a welded bead is formed around the shaft body 51 by a torch 17 along the circumferential direction and laminated.
  • the inner peripheral portion of the modeling portion 53 made of the laminated welded beads is formed on the outer periphery of the shaft body 51.
  • a welding bead is formed in advance along the edge portion of the groove portion 59 in the shaft body 51 to seal the groove portion 59. In this way, by sealing the groove portion 59 with a welding bead and forming the inner peripheral portion of the modeling portion 53 on the outer periphery of the shaft body 51, a spiral internal flow path 65 along the axial direction is formed.
  • a hollow portion is formed by leaving a gap between the welded beads so that the blade passage 63 surrounded by the welded beads can be formed along the extending direction of the welded beads in the axial cross-sectional view.
  • the wing flow path forming step is performed.
  • connection flow path forming step of forming a connection flow path 67 extending in the radial direction is performed at both ends of the modeling portion 53.
  • the connection flow path 67 can be formed by forming a welded bead while avoiding the portion that becomes the connection flow path 67.
  • the connection flow path 67 may be formed by machining after laminating the welded beads.
  • FIG. 9 and 10 are views for explaining the wing flow path forming process for forming the trapezoidal cross-sectional portion 63A of the wing flow path 63, and in FIG. 9, the welded bead B is shown in a shaded area.
  • the welded bead B is formed along the extending direction X of the blade 55 with respect to the base layer BLU made of the welded bead B to form the welded bead layer.
  • BL1 is laminated. At this time, a gap GA1 is formed between the welded beads B.
  • the welded bead B is formed along the extending direction X of the blade 55 with respect to the welded bead layer BL1 of the lower layer to form the welded bead layer BL2. Laminate. At this time, a gap GA2 smaller than the gap GA1 formed by the lower weld bead layer BL1 is formed between the welded beads B.
  • a welded bead B is formed along the extending direction X of the blade 55 with respect to the welded bead layer BL2 of the lower layer, and the welded bead layer of the lower layer is formed.
  • the welded bead layer BL3 is laminated so as to close the gap GA2 formed in BL2.
  • the blade 55 is formed, and the inside thereof is a trapezoidal cross-sectional portion 63A having a trapezoidal cross-sectional view.
  • a wing flow path 63 composed of a hollow portion can be formed.
  • FIG. 11 and 12 are views for explaining a wing flow path forming step for forming a curved cross-sectional portion 63B of the wing flow path 63, and in FIG. 11, the welded bead B is shown in a shaded area. ..
  • the welded bead B is formed along the extending direction X of the blade 55 with respect to the base layer BLU made of the welded bead B, and the welded bead layer is formed.
  • BL1 is laminated. At this time, two gaps GB1 are formed at intervals between the welded beads B.
  • the welded bead B is formed with respect to the lower welded bead layer BL1 along the extending direction X of the blade 55 to form the welded bead layer BL2. Laminate. At this time, one gap GB2 connected to the two gaps GB1 formed by the lower welded bead layer BL1 is formed between the welded beads B.
  • a welded bead B is formed along the extending direction X of the blade 55 with respect to the welded bead layer BL2 of the lower layer, and the welded bead layer of the lower layer is formed.
  • the welded bead layer BL3 is laminated so as to close the gap GB2 formed in BL2.
  • the blade 55 is formed, and the inside thereof is formed into a curved cross-sectional portion 63B having a curved axial cross-sectional view. It is possible to form a wing passage 63 composed of a hollow portion.
  • a hollow portion is formed by leaving a gap between the welded beads B to form a hollow portion in a cross-sectional view of the shaft.
  • the blade flow path 63 surrounded by the welded bead B can be formed along the extending direction of the welded bead B.
  • a large cross-sectional area can be secured with a small number of passes.
  • the wing passage 63 having a trapezoidal cross-sectional portion 63A can be easily formed.
  • the welded bead layer BL1 on the lower layer side forms two gaps GB1
  • the welded bead layer BL2 on the upper layer side forms one gap GB2 connected to the two gaps GB1 in the lower layer.
  • the blade flow path 63 is formed so that the surface along the outer surface of the blade 55 is parallel to the outer surface of the blade 55, the wall thickness from the outer surface of the blade 55 to the blade flow path 63 is made uniform. And the blade 55 can be cooled evenly.
  • the internal flow path 65 on the outer periphery of the shaft body 51, it is possible to easily and at low cost to manufacture the modeled object W capable of efficiently cooling a wider range.
  • the cooling medium is circulated between the internal flow path 65 and the wing portion flow path 63 via the connection flow path 67. Can be done. As a result, the inside of the modeled object W and the blade 55 can be cooled efficiently and uniformly. Further, by circulating the cooling medium between the blade flow path 63 and the internal flow path 65, it is possible to easily determine the presence or absence of blockage in the cooling flow path 61.
  • a case is exemplified in which a wing passage 63 having a trapezoidal cross-section portion 63A on both end sides and a curved cross-section portion 63B on the center side is modeled, but the wing passage 63 is trapezoidal over the entire length. It may be a cross-section portion 63A or a curved cross-section portion 63B.
  • the present invention is not limited to the above-described embodiment, and can be modified or applied by those skilled in the art based on the combination of the configurations of the embodiments with each other, the description of the specification, and the well-known technique. It is also a matter of the present invention to do so, and it is included in the scope of seeking protection.
  • a hollow portion is formed by leaving a gap between the welded beads so that the wing flow path surrounded by the welded beads can be formed along the extending direction of the welded beads in the axial cross-sectional view.
  • a method for manufacturing a modeled object which performs a step of forming a wing flow path.
  • a hollow portion is formed by leaving a gap between the welded beads, so that the welded beads are surrounded by the welded beads in a cross-sectional view.
  • the wing flow path can be formed along the extending direction of the welded bead.
  • wing flow path forming step One of (1) to (3) that forms a gap between the welded beads so that the surface of the wing flow path along the outer surface of the wing is parallel to the outer surface of the wing.
  • the method for manufacturing a model as described in. According to this method of manufacturing a modeled object, a wing flow path is formed so that the surface along the outer surface of the wing is parallel to the outer surface of the wing, so that the wing flow path from the outer surface of the wing to the wing flow path.
  • the wall thickness can be made uniform, and the wings can be cooled evenly.
  • a rod-shaped shaft and A molding portion provided on the outer periphery of the shaft body and having a wing portion formed by laminating welded beads obtained by melting and solidifying a filler metal, and a molding portion.
  • a wing flow path formed along the wing in the modeling portion The internal flow path formed around the shaft body and Has a model. According to this modeled object, it has a wing portion flow path formed along the wing portion and an internal flow path formed around the shaft body. Therefore, by flowing a cooling medium through these wing passages and the internal flow passage, a wide range including the wing can be efficiently cooled.
  • At least a part of the wing flow path is Formed in a trapezoidal shape in cross-sectional view of the axis
  • the cooling medium can flow smoothly.
  • the surface of the trapezoidal wing flow path along the outer surface of the wing is parallel to the outer surface of the wing, the wall thickness from the outer surface of the wing to the wing flow path can be made uniform. , The wings can be cooled evenly.
  • At least a part of the wing flow path is It is formed in a curved shape in the axial cross section,
  • the cooling medium can flow over a wide range in the axial cross section.
  • the surface of the curved wing flow path along the outer surface of the wing has a surface parallel to the outer surface of the wing, the wall thickness from the outer surface of the wing to the wing flow path should be made uniform. And the wings can be cooled evenly.

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  • Mechanical Engineering (AREA)
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  • Manufacturing & Machinery (AREA)
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  • Dispersion Chemistry (AREA)

Abstract

Procédé de fabrication d'objet moulé permettant de fabriquer un objet moulé doté d'une section moulée présentant une lame qui est moulée en stratifiant des cordons de soudure obtenus par fusion et en solidifiant un métal d'apport sur la périphérie externe d'un corps d'arbre en forme de tige, le procédé comprenant la réalisation d'une étape de moulage d'une partie d'aile dans laquelle, pendant le moulage de la section moulée, les cordons de soudure sont formés le long de la direction d'extension de la lame pour mouler la lame ; et dans l'étape de moulage de la partie d'aile, une étape de formation de trajet d'écoulement de la partie d'aile dans laquelle, lors de la stratification des cordons de soudure, un espace est ouvert entre les cordons de soudure pour former une partie creuse, un trajet d'écoulement de la partie d'aile délimité par les cordons de soudure dans une vue en coupe axiale étant formé le long de la direction d'extension des cordons de soudure.
PCT/JP2021/044591 2020-12-16 2021-12-03 Procédé de fabrication d'objet moulé et objet moulé WO2022131037A1 (fr)

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Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20110083823A1 (en) * 2009-10-14 2011-04-14 Pascal Zaffino Mould with conformal cooling
CN108480821A (zh) * 2018-03-27 2018-09-04 福州大学 一种圆形截面随形冷却流道的电弧增材制造方法
WO2019175213A1 (fr) * 2018-03-13 2019-09-19 Kongsberg Maritime Sweden Ab Procédé de fabrication d'une pale d'hélice et pale d'hélice
JP2020116621A (ja) * 2019-01-25 2020-08-06 株式会社神戸製鋼所 積層造形物の製造方法及び積層造形物

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20110083823A1 (en) * 2009-10-14 2011-04-14 Pascal Zaffino Mould with conformal cooling
WO2019175213A1 (fr) * 2018-03-13 2019-09-19 Kongsberg Maritime Sweden Ab Procédé de fabrication d'une pale d'hélice et pale d'hélice
CN108480821A (zh) * 2018-03-27 2018-09-04 福州大学 一种圆形截面随形冷却流道的电弧增材制造方法
JP2020116621A (ja) * 2019-01-25 2020-08-06 株式会社神戸製鋼所 積層造形物の製造方法及び積層造形物

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