US20130078099A1 - Joining structure of rotation part of rotary machine and method of joining rotation part of rotary machine - Google Patents
Joining structure of rotation part of rotary machine and method of joining rotation part of rotary machine Download PDFInfo
- Publication number
- US20130078099A1 US20130078099A1 US13/570,576 US201213570576A US2013078099A1 US 20130078099 A1 US20130078099 A1 US 20130078099A1 US 201213570576 A US201213570576 A US 201213570576A US 2013078099 A1 US2013078099 A1 US 2013078099A1
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- US
- United States
- Prior art keywords
- shroud
- blade
- filler metal
- brazing
- rotary machine
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Abandoned
Links
- 238000005304 joining Methods 0.000 title claims abstract description 49
- 238000000034 method Methods 0.000 title claims description 88
- 229910052751 metal Inorganic materials 0.000 claims description 56
- 239000002184 metal Substances 0.000 claims description 56
- 239000000945 filler Substances 0.000 claims description 52
- 238000005219 brazing Methods 0.000 claims description 41
- 238000010894 electron beam technology Methods 0.000 claims description 29
- 238000003466 welding Methods 0.000 claims description 18
- 238000002844 melting Methods 0.000 claims description 17
- 230000008018 melting Effects 0.000 claims description 17
- 230000001678 irradiating effect Effects 0.000 claims description 15
- 230000006698 induction Effects 0.000 claims description 2
- 239000012530 fluid Substances 0.000 description 18
- 239000000463 material Substances 0.000 description 10
- 229910000679 solder Inorganic materials 0.000 description 6
- 229910001369 Brass Inorganic materials 0.000 description 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 2
- 229910000551 Silumin Inorganic materials 0.000 description 2
- ATJFFYVFTNAWJD-UHFFFAOYSA-N Tin Chemical compound [Sn] ATJFFYVFTNAWJD-UHFFFAOYSA-N 0.000 description 2
- 239000010951 brass Substances 0.000 description 2
- 229910052802 copper Inorganic materials 0.000 description 2
- 239000010949 copper Substances 0.000 description 2
- MOFOBJHOKRNACT-UHFFFAOYSA-N nickel silver Chemical compound [Ni].[Ag] MOFOBJHOKRNACT-UHFFFAOYSA-N 0.000 description 2
- 239000010956 nickel silver Substances 0.000 description 2
- 239000000843 powder Substances 0.000 description 2
- 230000001131 transforming effect Effects 0.000 description 2
- 229910000975 Carbon steel Inorganic materials 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 239000010962 carbon steel Substances 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
Images
Classifications
-
- 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
- B23K1/00—Soldering, e.g. brazing, or unsoldering
- B23K1/0008—Soldering, e.g. brazing, or unsoldering specially adapted for particular articles or work
-
- 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
- F04D29/26—Rotors specially for elastic fluids
- F04D29/28—Rotors specially for elastic fluids for centrifugal or helico-centrifugal pumps for radial-flow or helico-centrifugal pumps
-
- 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
- B23K1/00—Soldering, e.g. brazing, or unsoldering
- B23K1/005—Soldering by means of radiant energy
-
- 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
- B23K1/00—Soldering, e.g. brazing, or unsoldering
- B23K1/005—Soldering by means of radiant energy
- B23K1/0056—Soldering by means of radiant energy soldering by means of beams, e.g. lasers, E.B.
-
- 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
- B23K26/24—Seam welding
- B23K26/244—Overlap seam 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
- B23K28/00—Welding or cutting not covered by any of the preceding groups, e.g. electrolytic welding
- B23K28/02—Combined welding or cutting procedures or apparatus
-
- 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
- B23K31/00—Processes relevant to this subclass, specially adapted for particular articles or purposes, but not covered by only one of the preceding main groups
- B23K31/02—Processes relevant to this subclass, specially adapted for particular articles or purposes, but not covered by only one of the preceding main groups relating to soldering or 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
- B23K35/00—Rods, electrodes, materials, or media, for use in soldering, welding, or cutting
- B23K35/02—Rods, electrodes, materials, or media, for use in soldering, welding, or cutting characterised by mechanical features, e.g. shape
- B23K35/0222—Rods, electrodes, materials, or media, for use in soldering, welding, or cutting characterised by mechanical features, e.g. shape for use in soldering, brazing
- B23K35/0244—Powders, particles or spheres; Preforms made therefrom
- B23K35/025—Pastes, creams, slurries
-
- 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
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T29/00—Metal working
- Y10T29/49—Method of mechanical manufacture
- Y10T29/49316—Impeller making
- Y10T29/49329—Centrifugal blower or fan
Definitions
- Apparatuses and methods consistent with exemplary embodiments relate to a joining structure of a rotation part of a rotary machine and methods of joining a rotation part of a rotary machine, and more particularly, to a joining structure of a rotation part of a rotary machine and methods of joining a rotation part of a rotary machine such as a compressor or a pump.
- a compressor or a pump is a rotary machine whose main element is a rotation part.
- a rotary machine in general, includes an impeller as a rotation part which increases the pressure of a fluid by transferring rotational kinetic energy to the fluid.
- the impeller includes a plurality of blades for guiding the flow of the fluid and transferring energy to the fluid.
- a shroud is disposed outside the impeller and forms fluid passages together with the blades.
- One or more exemplary embodiments may overcome the above disadvantages and other disadvantages not described above. However, it is understood that one or more exemplary embodiment are not required to overcome the disadvantages described above, and may not overcome any of the problems described above.
- One or more exemplary embodiments provide a joining structure of a rotation part of a rotary machine, the joining structure having sufficient strength and reliability, and methods thereof joining the rotation part.
- a joining structure of a rotation part of a rotary machine including blades and a shroud, and the joining structure including a welded part formed by solidifying a melted part of the blade and the shroud; and a brazed part formed at a junction part of the blade and the shroud.
- the rotary machine may be a compressor or a pump.
- the brazed part may include a fillet part formed at the junction part; and a clearance bonding part formed at the junction part between the blade and the shroud.
- a method of joining a rotation part of a rotary machine including blades and a shroud
- the method including: preparing the blade and the shroud; disposing the blade on one surface of the shroud; disposing a filler metal for a brazing process at a junction part of the blade and the shroud; performing the brazing process by irradiating an electron beam or a laser beam onto a portion of another surface of the shroud, which is opposite to a portion of the one surface of the shroud where the blade is disposed, and melting the filler metal by using heat generated by the electron beam or the laser beam; and welding the blade and the shroud by irradiating the electron beam or the laser beam onto the portion of the another surface of the shroud, which corresponds to the portion of the one surface of the shroud where the blade is disposed, and melting the blade and the shroud so as to form a melted part.
- the rotary machine may be a compressor or a pump.
- the filler metal may be in the form of a paste.
- the performing of the brazing process may include forming a fillet part at the junction part; and forming a clearance bonding part at the junction part between the blade and the shroud by using the melted filler metal.
- a method of joining a rotation part of a rotary machine including blades and a shroud
- the method including: preparing the blade and the shroud; disposing the blade on one surface of the shroud; welding the blade and the shroud by irradiating an electron beam or a laser beam onto a portion of another surface of the shroud, which is opposite to a portion of the one surface of the shroud where the blade is disposed, and melting the blade and the shroud so as to form a melted part; disposing a filler metal for a brazing process at a junction part of the blade and the shroud; and performing the brazing process by applying heat to the junction part and melting the disposed filler metal.
- the rotary machine may be a compressor or a pump.
- the filler metal may be in the form of paste.
- the performing of the brazing process may include forming a fillet part at the junction part; and forming a clearance bonding part at the junction part between the blade and the shroud by using the melted filler metal.
- FIG. 1 is a perspective view of a rotation part of a rotary machine, according to an exemplary embodiment
- FIG. 2 is a cross-sectional view of FIG. 1 as viewed at II-II;
- FIG. 3 is a cross-sectional view of a joining structure of the rotation part illustrated in FIG. 1 , according to an exemplary embodiment
- FIG. 4 is a magnified cross-sectional view of portion A illustrated in FIG. 3 ;
- FIG. 5 is a flowchart which illustrates a process used to form a joining structure of a rotation part of a rotary machine, according to an exemplary embodiment.
- FIGS. 6-9 are cross-sectional views showing sequential processes of a method of joining the rotation part illustrated in FIG. 1 , according to an exemplary embodiment
- FIG. 10 is a flowchart which illustrates a process used to form a joining structure of a rotation part of a rotary machine, according to another exemplary embodiment.
- FIGS. 11-13 are cross-sectional views showing sequential processes of a method of joining the rotation part illustrated in FIG. 1 , according to another exemplary embodiment.
- FIG. 1 is a perspective view of a rotation part 100 of a rotary machine, according to an exemplary embodiment.
- FIG. 2 is a cross-sectional view of FIG. 1 as viewed at II-II.
- FIG. 3 is a cross-sectional view of a joining structure of the rotation part 100 illustrated in FIG. 1 , according to an exemplary embodiment.
- FIG. 4 is a magnified cross-sectional view of portion A illustrated in FIG. 3 .
- the rotary machine according to the current embodiment is a compressor, and as illustrated in FIGS. 1 and 2 , the rotation part 100 of the rotary machine includes an impeller 110 and a shroud 120 .
- the rotary machine is not limited to a compressor and may be any device capable of changing the pressure and speed of a fluid due to a rotary motion of the rotation part.
- the rotary machine may be a pump or an air blower.
- the impeller 110 includes an inner core 111 , a base unit 112 , and a plurality of blades 113 .
- the inner core 111 has a cylindrical shape.
- a mounting hole 111 a is formed in the center of the inner core 111 . Since a rotation shaft (not shown) is fitted into the mounting hole 111 a in an assembling process, the inner core 111 transfers power from the rotation shaft to the impeller 110 .
- the base unit 112 is disposed outside the inner core 111 . Since a surface 112 a of the base unit 112 is inclined and curved to form bottom surfaces of fluid channels, a fluid may flow smoothly and maximum energy may be transferred to the fluid.
- the blades 113 are formed on the surface 112 a of the base unit 112 , guide the flow of the fluid, and transfer kinetic energy of the impeller 110 to the fluid.
- the shroud 120 is joined onto the blades 113 , has a lamp shade shape with concave curvatures whose central portion is open, and covers upper portions of the blades 113 .
- the shroud 120 forms ceiling surfaces of the fluid channels, and also forms passages of the fluid together with the base unit 112 and the blades 113 .
- a fluid flows into inlets 100 a of the rotation part 100 in the directions indicated by arrows in FIG. 2 , receives rotational kinetic energy of the rotation part 100 , and then flows out of outlets 100 b in a high-pressure state. Subsequently, the fluid passes through a diffuser (not shown), the fluid speed is reduced, and the fluid pressure is increased to a desired level. A detailed description thereof is not provided.
- a joining structure of the rotation part 100 will now be described with reference to FIGS. 3 and 4 .
- the joining structure of the rotation part 100 mainly includes a welded part 121 and a brazed part 122 .
- the welded part 121 is formed by irradiating an electron beam or a laser beam, melting the blade 113 and the shroud 120 so as to form a melted part, and solidifying the melted part.
- the brazed part 122 is formed at a junction part J of the blade 113 and the shroud 120 , and includes a fillet part 122 a and a clearance bonding part 122 b.
- the fillet part 122 a is formed at the junction part J and the clearance bonding part 122 b is formed at a clearance of the junction part J between the blade 113 and the shroud 120 .
- the brazed part 122 is formed by disposing a filler metal for a brazing process at the junction part J of the blade 113 and the shroud 120 and then performing the brazing process by applying heat.
- the brazing process will be described in detail below.
- the joining structure of the rotation part 100 includes the brazed part 122 as well as the welded part 121 , a joining force and a joining reliability may be improved between the blade 113 and the shroud 120 . This is because the melted filler metal forms the fillet part 122 a, and evenly spreads into a minute clearance of the junction part J between the blade 113 and the shroud 120 so as to form the clearance bonding part 122 b.
- FIG. 5 is a flowchart which illustrates processes used to form a joining structure of a rotation part of a rotary machine, according to an exemplary embodiment
- FIGS. 6 through 9 are cross-sectional views showing the sequential processes of a method of joining the rotation part 100 illustrated in FIG. 1 , according to an exemplary embodiment.
- the blade 113 is already mounted on the surface 112 a of the base unit 112 and a joining process between the blade 113 and the shroud 120 is ready.
- the exemplary embodiment is not limited thereto.
- the blade 113 may be joined to the shroud 120 first and then may be mounted on the base unit 112 .
- the blade 113 and the shroud 120 may be formed of carbon steel having a light weight, or may be formed of nonferrous metal such as aluminum. That is, the blade 113 and the shroud 120 are not particularly limited to any material as long as they are formed of metal.
- the user disposes the blade 113 in such a way that at least a portion of the blade 113 contacts one surface 120 a of the shroud 120 (operation S 102 ).
- the user disposes a filler metal 130 for a brazing process at the junction part J of the blade 113 and the shroud 120 (operation S 103 ).
- the filler metal 130 may have various types and forms according to a base material, i.e., the material of the blade 113 and the shroud 120 .
- the filler metal 130 may be tin solder, silver solder, brass solder, nickel-silver, copper, silumin, or another well-known filler metal in terms of its type, and may be powder, paste, or a solution in terms of its form.
- the filler metal 130 may be any appropriate filler metal according to the material of the blade 113 and the shroud 120 and may be in the form of a paste including the filler metal.
- the filler metal 130 is not particularly limited to the above-mentioned types and forms.
- the user forms the brazed part 122 by irradiating an electron beam or a laser beam onto a portion of another surface 120 b of the shroud 120 , which is opposite to a portion of the one surface 120 a of the shroud 120 where the blade 113 is disposed, and melting the filler metal 130 by using heat generated by the electron beam or the laser beam (operation S 104 ).
- the portion onto which the electron beam or the laser beam is irradiated is a portion of the other surface 120 b of the shroud 120 .
- electron beam welding is performed by using a principle of transforming kinetic energy of electrons into thermal energy.
- the electron beam may be irradiated by an electron beam generator used in a common electron beam welding system.
- laser beam welding is performed by using a principle of transforming energy of a laser into thermal energy.
- the laser beam may be irradiated by a laser beam generator used in a common laser beam welding system.
- the filler metal 130 Due to brazing characteristics, since a melting temperature of the filler metal 130 is lower than the melting temperature of a base material (here, the melting temperature of the blade 113 and the shroud 120 ), the filler metal 130 is melted first. When the filler metal 130 starts to melt, the melted filler metal 130 evenly spreads at the junction part J. In the current embodiment, due to a capillary phenomenon, the melted filler metal 130 also spreads into a minute clearance between the blade 113 and the shroud 120 . Consequently, as illustrated in FIGS. 3 , 4 , and 8 , the brazed part 122 including the fillet part 122 a and the clearance bonding part 122 b are formed.
- the size of the fillet part 122 a is predetermined in a designing process by, for example, calculating the strength of the fillet part 122 a and, in order to grow the fillet part 122 a to the determined size, the amount of the filler metal 130 , and an irradiation intensity and an irradiation time of the electron beam or the laser beam are adjusted.
- the user forms the welded part 121 by sufficiently irradiating the electron beam or the laser beam on the portion of the other surface 120 b of the shroud 120 , which is opposite to the portion of the one surface 120 a of the shroud 120 where the blade 113 is disposed, melting the blade 113 and the shroud 120 to form a melted part 121 ′, and solidifying the melted part 121 ′ (operation S 105 ).
- the portion onto which the electron beam or the laser beam is irradiated is the portion of the other surface 120 b of the shroud 120 .
- a portion of the shroud 120 is melted by using heat generated due to the irradiating and the melted portion is gradually grown to reach the blade 113 and is mixed with a melted portion of the blade 113 , thereby forming the melted part 121 ′.
- FIG. 9 shows that the melted part 121 ′ is grown to join the blade 113 and the shroud 120 with a sufficient joining force. If the melted part 121 ′ is sufficiently grown as illustrated in FIG. 9 , the user stops irradiating the electron beam or the laser beam, cools the melted part 121 ′ so as to form the welded part 121 as illustrated in FIG. 3 , and thus completing the joining operation. In addition, as illustrated in FIG. 9 , due to the above joining operation, a heat affected zone (HAZ) is generated.
- HAZ heat affected zone
- operation S 105 is performed immediately after operation S 104 is performed in the above description, the current embodiment is not limited thereto. That is, if necessary, the user may perform operation S 105 after operation S 104 is completely performed, a sufficient cooling time has passed, and thus, the brazed part 122 is completely formed.
- a joining structure of the rotation part 100 may have less work deformation and may achieve an excellent joining force between the blade 113 and the shroud 120 .
- FIG. 10 is a flowchart which illustrates a process used to form a joining structure of a rotation part of a rotary machine, according to another exemplary embodiment
- FIGS. 11 through 13 are cross-sectional views showing sequential processes of a method of joining the rotation part 100 illustrated in FIG. 1 , according to another exemplary embodiment.
- a user prepares the blade 113 and the shroud 120 formed of metal (operation S 201 ) and, as illustrated in FIG. 6 , disposes the blade 113 in such a way that at least a portion of the blade 113 contacts one surface 120 a of the shroud 120 (operation S 202 ).
- Operations S 201 and S 202 are the same as those described above with reference to operations S 101 and S 102 and FIG. 6 .
- the user forms the welded part 121 by sufficiently irradiating an electron beam or a laser beam on a portion of the other surface 120 b of the shroud 120 , which is opposite to a portion of the one surface 120 a of the shroud 120 where the blade 113 is disposed, melting the blade 113 and the shroud 120 so as to form a melted part 121 ′, and solidifying the melted part 121 ′ (operation S 203 ).
- the portion onto which the electron beam or the laser beam is irradiated is the portion of the other surface 120 b of the shroud 120 .
- a portion of the shroud 120 is melted by using heat generated due to the irradiating and the melted portion is gradually grown to reach the blade 113 and is mixed with a melted portion of the blade 113 , thereby forming the melted part 121 ′.
- FIG. 11 shows that the melted part 121 ′ is grown to join the blade 113 and the shroud 120 with a sufficient joining force. If the melted part 121 ′ is sufficiently grown as illustrated in FIG. 11 , the user stops irradiating the electron beam or the laser beam, cools the melted part 121 ′ so as to form the welded part 121 , and thus completing a welding process.
- the user disposes the filler metal 130 for a brazing process at the junction part J of the blade 113 and the shroud 120 (operation S 204 ).
- the filler metal 130 may have various types and forms according to a base material, i.e., the material of the blade 113 and the shroud 120 .
- the filler metal 130 may be tin solder, silver solder, brass solder, nickel-silver, copper, silumin, or other well-known filler metal in terms of its type, and may be a powder, paste, or a solution in terms of its form.
- the filler metal 130 may be any appropriate filler metal according to the material of the blade 113 and the shroud 120 and may be in the form of paste including the filler metal. However, the filler metal 130 is not particularly limited to the above-mentioned types and forms.
- the user disposes the rotation part 100 in a furnace 140 and applies heat to the junction part J by operating the furnace 140 . If heat is applied to the junction part J, the filler metal 130 is melted to form the brazed part 122 (operation S 205 ).
- the melted filler metal 130 evenly spreads at the junction part J between the blade 113 and the shroud 120 .
- the melted filler metal 130 also spreads into a minute clearance between the blade 113 and the shroud 120 . Consequently, as illustrated in FIGS. 3 and 4 , the brazed part 122 including the fillet part 122 a and the clearance bonding part 122 b is formed.
- the size of the fillet part 122 a is previously determined in a designing process by, for example, calculating the strength of the fillet part 122 a and, in order to grow the fillet part 122 a to the determined size, the amount of the filler metal 130 , and an irradiation intensity and an irradiation time of the electron beam or the laser beam are adjusted.
- the brazing process is performed by using the furnace 140 in the above description
- the current embodiment is not limited to the above brazing method. That is, the brazing method is not particularly limited as long as the brazing process may be performed by applying heat to the junction part J.
- various brazing methods such as torch brazing, induction brazing, dip brazing, salt-bath brazing, and resistance brazing may be used.
- the joining structure of the rotation part 100 may have less work deformation and may achieve an excellent joining force between the blade 113 and the shroud 120 .
- the brazing process is performed at a relatively high temperature and then the brazing process is performed at a relatively low temperature, damage of the brazed part 122 due to high temperature may be prevented. That is, since the brazing process using the filler metal 130 is performed after the melted part 121 ′ formed in the welding process is sufficiently cooled to form the welded part 121 , the brazed part 122 may not be damaged.
- the strength and reliability of a joining structure between blades and a shroud may be increased.
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Plasma & Fusion (AREA)
- General Engineering & Computer Science (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
- Laser Beam Processing (AREA)
- Turbine Rotor Nozzle Sealing (AREA)
Abstract
A joining structure of a rotation part of a rotary machine, where the rotation part including blades and a shroud, includes a welded part made up of a solidified melted part of the blades and the shroud, and a brazed part disposed at a junction part of the blades and the shroud.
Description
- This application claims priority from Korean Patent Application No. 10-2011-0097570, filed on Sep. 27, 2011, in the Korean Intellectual Property Office, the disclosure of which is incorporated herein by reference in its entirety.
- 1. Field
- Apparatuses and methods consistent with exemplary embodiments relate to a joining structure of a rotation part of a rotary machine and methods of joining a rotation part of a rotary machine, and more particularly, to a joining structure of a rotation part of a rotary machine and methods of joining a rotation part of a rotary machine such as a compressor or a pump.
- 2. Description of the Related Art
- A compressor or a pump is a rotary machine whose main element is a rotation part.
- In general, a rotary machine includes an impeller as a rotation part which increases the pressure of a fluid by transferring rotational kinetic energy to the fluid. For this, the impeller includes a plurality of blades for guiding the flow of the fluid and transferring energy to the fluid.
- Meanwhile, a shroud is disposed outside the impeller and forms fluid passages together with the blades.
- Since the efficiency of a compressor mostly increases if the distance between blades and a shroud decreases, a method of maximizing the efficiency of a compressor by combining a shroud with the blades of an impeller has been suggested.
- One or more exemplary embodiments may overcome the above disadvantages and other disadvantages not described above. However, it is understood that one or more exemplary embodiment are not required to overcome the disadvantages described above, and may not overcome any of the problems described above.
- One or more exemplary embodiments provide a joining structure of a rotation part of a rotary machine, the joining structure having sufficient strength and reliability, and methods thereof joining the rotation part.
- According to an aspect of an exemplary embodiment, there is provided a joining structure of a rotation part of a rotary machine, the rotation part including blades and a shroud, and the joining structure including a welded part formed by solidifying a melted part of the blade and the shroud; and a brazed part formed at a junction part of the blade and the shroud.
- The rotary machine may be a compressor or a pump.
- The brazed part may include a fillet part formed at the junction part; and a clearance bonding part formed at the junction part between the blade and the shroud.
- According to another aspect of an exemplary embodiment, there is provided a method of joining a rotation part of a rotary machine, the rotation part including blades and a shroud, and the method including: preparing the blade and the shroud; disposing the blade on one surface of the shroud; disposing a filler metal for a brazing process at a junction part of the blade and the shroud; performing the brazing process by irradiating an electron beam or a laser beam onto a portion of another surface of the shroud, which is opposite to a portion of the one surface of the shroud where the blade is disposed, and melting the filler metal by using heat generated by the electron beam or the laser beam; and welding the blade and the shroud by irradiating the electron beam or the laser beam onto the portion of the another surface of the shroud, which corresponds to the portion of the one surface of the shroud where the blade is disposed, and melting the blade and the shroud so as to form a melted part.
- The rotary machine may be a compressor or a pump.
- The filler metal may be in the form of a paste.
- The performing of the brazing process may include forming a fillet part at the junction part; and forming a clearance bonding part at the junction part between the blade and the shroud by using the melted filler metal.
- According to another aspect of an exemplary embodiment, there is provided a method of joining a rotation part of a rotary machine, the rotation part including blades and a shroud, and the method including: preparing the blade and the shroud; disposing the blade on one surface of the shroud; welding the blade and the shroud by irradiating an electron beam or a laser beam onto a portion of another surface of the shroud, which is opposite to a portion of the one surface of the shroud where the blade is disposed, and melting the blade and the shroud so as to form a melted part; disposing a filler metal for a brazing process at a junction part of the blade and the shroud; and performing the brazing process by applying heat to the junction part and melting the disposed filler metal.
- The rotary machine may be a compressor or a pump.
- The filler metal may be in the form of paste.
- The performing of the brazing process may include forming a fillet part at the junction part; and forming a clearance bonding part at the junction part between the blade and the shroud by using the melted filler metal.
- The above and other aspects will become more apparent by describing in detail exemplary embodiments thereof with reference to the attached drawings, in which:
-
FIG. 1 is a perspective view of a rotation part of a rotary machine, according to an exemplary embodiment; -
FIG. 2 is a cross-sectional view ofFIG. 1 as viewed at II-II; -
FIG. 3 is a cross-sectional view of a joining structure of the rotation part illustrated inFIG. 1 , according to an exemplary embodiment; -
FIG. 4 is a magnified cross-sectional view of portion A illustrated inFIG. 3 ; -
FIG. 5 is a flowchart which illustrates a process used to form a joining structure of a rotation part of a rotary machine, according to an exemplary embodiment. -
FIGS. 6-9 are cross-sectional views showing sequential processes of a method of joining the rotation part illustrated inFIG. 1 , according to an exemplary embodiment; -
FIG. 10 is a flowchart which illustrates a process used to form a joining structure of a rotation part of a rotary machine, according to another exemplary embodiment. -
FIGS. 11-13 are cross-sectional views showing sequential processes of a method of joining the rotation part illustrated inFIG. 1 , according to another exemplary embodiment. - Hereinafter, exemplary embodiments will be described in detail with reference to the attached drawings. Like reference numerals in the drawings denote like elements, and thus, repeated descriptions will be omitted.
-
FIG. 1 is a perspective view of arotation part 100 of a rotary machine, according to an exemplary embodiment.FIG. 2 is a cross-sectional view ofFIG. 1 as viewed at II-II.FIG. 3 is a cross-sectional view of a joining structure of therotation part 100 illustrated inFIG. 1 , according to an exemplary embodiment.FIG. 4 is a magnified cross-sectional view of portion A illustrated inFIG. 3 . - The rotary machine according to the current embodiment is a compressor, and as illustrated in
FIGS. 1 and 2 , therotation part 100 of the rotary machine includes animpeller 110 and ashroud 120. - The rotary machine is not limited to a compressor and may be any device capable of changing the pressure and speed of a fluid due to a rotary motion of the rotation part. For example, the rotary machine may be a pump or an air blower.
- The
impeller 110 includes aninner core 111, abase unit 112, and a plurality ofblades 113. - The
inner core 111 has a cylindrical shape. - A
mounting hole 111 a is formed in the center of theinner core 111. Since a rotation shaft (not shown) is fitted into themounting hole 111 a in an assembling process, theinner core 111 transfers power from the rotation shaft to theimpeller 110. - The
base unit 112 is disposed outside theinner core 111. Since asurface 112 a of thebase unit 112 is inclined and curved to form bottom surfaces of fluid channels, a fluid may flow smoothly and maximum energy may be transferred to the fluid. - The
blades 113 are formed on thesurface 112 a of thebase unit 112, guide the flow of the fluid, and transfer kinetic energy of theimpeller 110 to the fluid. - Meanwhile, the
shroud 120 is joined onto theblades 113, has a lamp shade shape with concave curvatures whose central portion is open, and covers upper portions of theblades 113. - The
shroud 120 forms ceiling surfaces of the fluid channels, and also forms passages of the fluid together with thebase unit 112 and theblades 113. - A process of transferring energy to a fluid due to a rotary motion of the above-described
rotation part 100 will now be described. - When the rotation shaft rotates, the
impeller 110 and theshroud 120 also rotate. - A fluid flows into
inlets 100 a of therotation part 100 in the directions indicated by arrows inFIG. 2 , receives rotational kinetic energy of therotation part 100, and then flows out ofoutlets 100 b in a high-pressure state. Subsequently, the fluid passes through a diffuser (not shown), the fluid speed is reduced, and the fluid pressure is increased to a desired level. A detailed description thereof is not provided. - A joining structure of the
rotation part 100, according to an exemplary embodiment, will now be described with reference toFIGS. 3 and 4 . - The joining structure of the
rotation part 100 mainly includes awelded part 121 and abrazed part 122. - The
welded part 121 is formed by irradiating an electron beam or a laser beam, melting theblade 113 and theshroud 120 so as to form a melted part, and solidifying the melted part. - The brazed
part 122 is formed at a junction part J of theblade 113 and theshroud 120, and includes afillet part 122 a and aclearance bonding part 122 b. - The
fillet part 122 a is formed at the junction part J and theclearance bonding part 122 b is formed at a clearance of the junction part J between theblade 113 and theshroud 120. - The brazed
part 122 is formed by disposing a filler metal for a brazing process at the junction part J of theblade 113 and theshroud 120 and then performing the brazing process by applying heat. The brazing process will be described in detail below. - Since the joining structure of the
rotation part 100 includes the brazedpart 122 as well as the weldedpart 121, a joining force and a joining reliability may be improved between theblade 113 and theshroud 120. This is because the melted filler metal forms thefillet part 122 a, and evenly spreads into a minute clearance of the junction part J between theblade 113 and theshroud 120 so as to form theclearance bonding part 122 b. -
FIG. 5 is a flowchart which illustrates processes used to form a joining structure of a rotation part of a rotary machine, according to an exemplary embodiment, andFIGS. 6 through 9 are cross-sectional views showing the sequential processes of a method of joining therotation part 100 illustrated inFIG. 1 , according to an exemplary embodiment. - Initially, a user prepares the
blade 113 and theshroud 120 formed of metal (operation S101). - In operation S101, the
blade 113 is already mounted on thesurface 112 a of thebase unit 112 and a joining process between theblade 113 and theshroud 120 is ready. However, the exemplary embodiment is not limited thereto. For example, theblade 113 may be joined to theshroud 120 first and then may be mounted on thebase unit 112. - The
blade 113 and theshroud 120 may be formed of carbon steel having a light weight, or may be formed of nonferrous metal such as aluminum. That is, theblade 113 and theshroud 120 are not particularly limited to any material as long as they are formed of metal. - Then, as illustrated in
FIG. 6 , the user disposes theblade 113 in such a way that at least a portion of theblade 113 contacts onesurface 120 a of the shroud 120 (operation S102). - Then, as illustrated in
FIG. 7 , the user disposes afiller metal 130 for a brazing process at the junction part J of theblade 113 and the shroud 120 (operation S103). - The
filler metal 130 may have various types and forms according to a base material, i.e., the material of theblade 113 and theshroud 120. In general, thefiller metal 130 may be tin solder, silver solder, brass solder, nickel-silver, copper, silumin, or another well-known filler metal in terms of its type, and may be powder, paste, or a solution in terms of its form. - The
filler metal 130 may be any appropriate filler metal according to the material of theblade 113 and theshroud 120 and may be in the form of a paste including the filler metal. However, thefiller metal 130 is not particularly limited to the above-mentioned types and forms. - Then, as illustrated in
FIG. 8 , the user forms the brazedpart 122 by irradiating an electron beam or a laser beam onto a portion of anothersurface 120 b of theshroud 120, which is opposite to a portion of the onesurface 120 a of theshroud 120 where theblade 113 is disposed, and melting thefiller metal 130 by using heat generated by the electron beam or the laser beam (operation S104). As mentioned above, the portion onto which the electron beam or the laser beam is irradiated is a portion of theother surface 120 b of theshroud 120. - In general, electron beam welding is performed by using a principle of transforming kinetic energy of electrons into thermal energy. In the current exemplary embodiment, the electron beam may be irradiated by an electron beam generator used in a common electron beam welding system.
- In general, laser beam welding is performed by using a principle of transforming energy of a laser into thermal energy. In the exemplary embodiment, the laser beam may be irradiated by a laser beam generator used in a common laser beam welding system.
- In more detail, when the electron beam or the laser beam starts to be irradiated, heat is generated and thus the temperature of the
shroud 120 is increased. The heat is transferred from a portion where the electron beam or the laser beam is irradiated, reaches the junction part J, and thus is transferred to thefiller metal 130. - Due to brazing characteristics, since a melting temperature of the
filler metal 130 is lower than the melting temperature of a base material (here, the melting temperature of theblade 113 and the shroud 120), thefiller metal 130 is melted first. When thefiller metal 130 starts to melt, the meltedfiller metal 130 evenly spreads at the junction part J. In the current embodiment, due to a capillary phenomenon, the meltedfiller metal 130 also spreads into a minute clearance between theblade 113 and theshroud 120. Consequently, as illustrated inFIGS. 3 , 4, and 8, the brazedpart 122 including thefillet part 122 a and theclearance bonding part 122 b are formed. - The size of the
fillet part 122 a is predetermined in a designing process by, for example, calculating the strength of thefillet part 122 a and, in order to grow thefillet part 122 a to the determined size, the amount of thefiller metal 130, and an irradiation intensity and an irradiation time of the electron beam or the laser beam are adjusted. - Subsequently, as illustrated in
FIG. 9 , the user forms the weldedpart 121 by sufficiently irradiating the electron beam or the laser beam on the portion of theother surface 120 b of theshroud 120, which is opposite to the portion of the onesurface 120 a of theshroud 120 where theblade 113 is disposed, melting theblade 113 and theshroud 120 to form a meltedpart 121′, and solidifying the meltedpart 121′ (operation S105). As mentioned above, the portion onto which the electron beam or the laser beam is irradiated is the portion of theother surface 120 b of theshroud 120. - It should be noted in operation S105 that the region, intensity, and time for irradiating the electron beam or the laser beam have to be appropriately determined in order to minimize damages the brazed
part 122 formed in operation S104 as much as possible. - If the electron beam or the laser beam is sufficiently irradiated in operation S105, a portion of the
shroud 120 is melted by using heat generated due to the irradiating and the melted portion is gradually grown to reach theblade 113 and is mixed with a melted portion of theblade 113, thereby forming the meltedpart 121′. -
FIG. 9 shows that the meltedpart 121′ is grown to join theblade 113 and theshroud 120 with a sufficient joining force. If the meltedpart 121′ is sufficiently grown as illustrated inFIG. 9 , the user stops irradiating the electron beam or the laser beam, cools the meltedpart 121′ so as to form the weldedpart 121 as illustrated inFIG. 3 , and thus completing the joining operation. In addition, as illustrated inFIG. 9 , due to the above joining operation, a heat affected zone (HAZ) is generated. - Although operation S105 is performed immediately after operation S104 is performed in the above description, the current embodiment is not limited thereto. That is, if necessary, the user may perform operation S105 after operation S104 is completely performed, a sufficient cooling time has passed, and thus, the brazed
part 122 is completely formed. - As described above, according to the current embodiment, since a joining operation is performed by performing a welding process for melting the
blade 113 and theshroud 120 corresponding to a base material after performing a brazing process using thefiller metal 130, a joining structure of therotation part 100 may have less work deformation and may achieve an excellent joining force between theblade 113 and theshroud 120. - Furthermore, according to characteristics of the brazing process, since the melted
filler metal 130 evenly spreads into a minute clearance between theblade 113 and theshroud 120 due to a capillary phenomenon, cracks of the junction part J may be prevented and thus a joining reliability may be increased. -
FIG. 10 is a flowchart which illustrates a process used to form a joining structure of a rotation part of a rotary machine, according to another exemplary embodiment, andFIGS. 11 through 13 are cross-sectional views showing sequential processes of a method of joining therotation part 100 illustrated inFIG. 1 , according to another exemplary embodiment. - Initially, a user prepares the
blade 113 and theshroud 120 formed of metal (operation S201) and, as illustrated inFIG. 6 , disposes theblade 113 in such a way that at least a portion of theblade 113 contacts onesurface 120 a of the shroud 120 (operation S202). Operations S201 and S202 are the same as those described above with reference to operations S101 and S102 andFIG. 6 . - Subsequently, as illustrated in
FIG. 11 , the user forms the weldedpart 121 by sufficiently irradiating an electron beam or a laser beam on a portion of theother surface 120 b of theshroud 120, which is opposite to a portion of the onesurface 120 a of theshroud 120 where theblade 113 is disposed, melting theblade 113 and theshroud 120 so as to form a meltedpart 121′, and solidifying the meltedpart 121′ (operation S203). As mentioned above, the portion onto which the electron beam or the laser beam is irradiated is the portion of theother surface 120 b of theshroud 120. - If the electron beam or the laser beam is sufficiently irradiated in operation S203, a portion of the
shroud 120 is melted by using heat generated due to the irradiating and the melted portion is gradually grown to reach theblade 113 and is mixed with a melted portion of theblade 113, thereby forming the meltedpart 121′. -
FIG. 11 shows that the meltedpart 121′ is grown to join theblade 113 and theshroud 120 with a sufficient joining force. If the meltedpart 121′ is sufficiently grown as illustrated inFIG. 11 , the user stops irradiating the electron beam or the laser beam, cools the meltedpart 121′ so as to form the weldedpart 121, and thus completing a welding process. - Subsequently, as illustrated in
FIG. 12 , the user disposes thefiller metal 130 for a brazing process at the junction part J of theblade 113 and the shroud 120 (operation S204). - The
filler metal 130 may have various types and forms according to a base material, i.e., the material of theblade 113 and theshroud 120. In general, thefiller metal 130 may be tin solder, silver solder, brass solder, nickel-silver, copper, silumin, or other well-known filler metal in terms of its type, and may be a powder, paste, or a solution in terms of its form. - The
filler metal 130 may be any appropriate filler metal according to the material of theblade 113 and theshroud 120 and may be in the form of paste including the filler metal. However, thefiller metal 130 is not particularly limited to the above-mentioned types and forms. - Then, as illustrated in
FIG. 13 , the user disposes therotation part 100 in afurnace 140 and applies heat to the junction part J by operating thefurnace 140. If heat is applied to the junction part J, thefiller metal 130 is melted to form the brazed part 122 (operation S205). - When the
filler metal 130 starts to melt, the meltedfiller metal 130 evenly spreads at the junction part J between theblade 113 and theshroud 120. In this case, due to a capillary phenomenon, the meltedfiller metal 130 also spreads into a minute clearance between theblade 113 and theshroud 120. Consequently, as illustrated inFIGS. 3 and 4 , the brazedpart 122 including thefillet part 122 a and theclearance bonding part 122 b is formed. - The size of the
fillet part 122 a is previously determined in a designing process by, for example, calculating the strength of thefillet part 122 a and, in order to grow thefillet part 122 a to the determined size, the amount of thefiller metal 130, and an irradiation intensity and an irradiation time of the electron beam or the laser beam are adjusted. - Although the brazing process is performed by using the
furnace 140 in the above description, the current embodiment is not limited to the above brazing method. That is, the brazing method is not particularly limited as long as the brazing process may be performed by applying heat to the junction part J. For example, various brazing methods such as torch brazing, induction brazing, dip brazing, salt-bath brazing, and resistance brazing may be used. - As described above, according to the current embodiment, since the joining operation is executed by performing a brazing process using the
filler metal 130 after performing a welding process for melting theblade 113 and theshroud 120 corresponding to a base material, the joining structure of therotation part 100 may have less work deformation and may achieve an excellent joining force between theblade 113 and theshroud 120. - Furthermore, according to characteristics of the brazing process, since the melted
filler metal 130 evenly spreads into a minute clearance between theblade 113 and theshroud 120 due to a capillary phenomenon, cracks of the junction part J may be prevented from appearing, and thus, a joining reliability may be increased. - In addition, since the welding process is performed at a relatively high temperature and then the brazing process is performed at a relatively low temperature, damage of the brazed
part 122 due to high temperature may be prevented. That is, since the brazing process using thefiller metal 130 is performed after the meltedpart 121′ formed in the welding process is sufficiently cooled to form the weldedpart 121, the brazedpart 122 may not be damaged. - According to the current exemplary embodiment, the strength and reliability of a joining structure between blades and a shroud may be increased.
- While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it will be understood by those of ordinary skill in the art that various changes in form and details may be made therein without departing from the spirit and scope of the present invention as defined by the following claims. The exemplary embodiments should be considered in a descriptive sense only and not for purposes of limitation.
Claims (20)
1. A joining structure of a rotation part of a rotary machine, the rotation part comprising blades and a shroud, and the joining structure comprising:
a welded part comprising a solidified melted part of each blade and the shroud; and
a brazed part disposed at a junction part.
2. The joining structure of claim 1 , wherein the rotary machine is a compressor or a pump.
3. The joining structure of claim 1 , wherein the brazed part comprises:
a fillet part formed at the junction part; and
a clearance bonding part formed at a minute clearance of the junction part between the blade and the shroud.
4. A method of joining a rotation part of a rotary machine, the method comprising:
preparing a blade and a shroud;
disposing the blade on one surface of the shroud;
disposing a filler metal at a junction part of the blade and the shroud;
performing a brazing process; and
performing a welding process on the blade and the shroud after performing the brazing process.
5. The method of claim 4 , wherein the rotary machine is a compressor or a pump.
6. The method of claim 4 , wherein the filler metal is in the form of a paste.
7. The method of claim 4 , wherein the performing of the brazing process comprises:
irradiating an electron beam or a laser beam onto a portion of another surface of the shroud, which is opposite to a portion of the one surface of the shroud where the blade is disposed; and
melting the filler metal by using heat generated by the electron beam or the laser beam.
8. The method of claim 7 , wherein the performing of the brazing process further comprises:
forming a fillet part at the junction part; and
forming a clearance bonding part at a minute clearance of the junction part between the blade and the shroud by using the melted filler metal.
9. The method of claim 4 , wherein the performing of the welding process comprises:
irradiating the electron beam or the laser beam onto the portion of the another surface of the shroud, which is opposite to the portion of the one surface of the shroud where the blade is disposed; and
melting the blade and the shroud to form a melted part.
10. The method of claim 9 , wherein the performing of the welding process further comprises solidifying the melted part.
11. The method of claim 4 further comprises attaching the blade to a base unit of an impeller.
12. A method of joining a rotation part of a rotary machine, the method comprising:
preparing a blade and a shroud;
disposing the blade on one surface of the shroud;
performing a welding process on the blade and the shroud;
disposing a filler metal at a junction part of the blade and the shroud; and
performing a brazing process by applying heat to the junction part and melting the disposed filler metal after performing the welding process.
13. The method of claim 12 , wherein the performing of the welding process comprises:
irradiating the electron beam or the laser beam onto the portion of the another surface of the shroud, which is opposite to the portion of the one surface of the shroud where the blade is disposed; and
melting the blade and the shroud to form a melted part.
14. The method of claim 13 , wherein the performing of the welding process further comprises solidifying the melted part.
15. The method of claim 12 , wherein the performing of the brazing process comprises disposing the rotational part in a furnace.
16. The method of claim 12 , wherein the performing of the brazing process comprises performing one of torch brazing, induction brazing, dip brazing, salt-bath brazing, or resistance brazing.
17. The method of claim 12 , wherein the rotary machine is a compressor or a pump.
18. The method of claim 12 , wherein the filler metal is in the form of paste.
19. The method of claim 12 , wherein the performing of the brazing process comprises:
forming a fillet part at the junction part; and
forming a clearance bonding part at a clearance between the blade and the shroud by using the melted filler metal.
20. The method of claim 12 further comprises attaching the blade to a base unit of an impeller.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
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KR1020110097570A KR20130033718A (en) | 2011-09-27 | 2011-09-27 | Joining structure of rotation part of rotary machine and method for joining rotation part of rotary machine |
KR10-2011-0097570 | 2011-09-27 |
Publications (1)
Publication Number | Publication Date |
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US20130078099A1 true US20130078099A1 (en) | 2013-03-28 |
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Family Applications (1)
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US13/570,576 Abandoned US20130078099A1 (en) | 2011-09-27 | 2012-08-09 | Joining structure of rotation part of rotary machine and method of joining rotation part of rotary machine |
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US (1) | US20130078099A1 (en) |
KR (1) | KR20130033718A (en) |
CN (1) | CN103008902A (en) |
Cited By (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20130017067A1 (en) * | 2009-12-11 | 2013-01-17 | Ugo Cantelli | Method of beam welding of an impeller with performance of two passes on a slot ; impeller and turbo machine having such weld configuration |
US20130272883A1 (en) * | 2012-04-17 | 2013-10-17 | Samsung Techwin Co., Ltd. | Impeller and method of manufacturing the same |
EP2789860A3 (en) * | 2013-04-12 | 2015-05-13 | Doosan Heavy Industries & Construction Co., Ltd. | Shroud impeller of centrifugal compressor and method of manufacturing the same |
WO2015104762A1 (en) * | 2014-01-08 | 2015-07-16 | パナソニックIpマネジメント株式会社 | Laser welding method |
US9091277B1 (en) * | 2014-04-25 | 2015-07-28 | Computer Assisted Manufacturing Technology Corporation | Systems and methods for manufacturing a shrouded impeller |
US20160001406A1 (en) * | 2014-07-07 | 2016-01-07 | Hanwha Techwin Co., Ltd. | Rotation part of rotary machine and method of manufacturing the same |
US20190107122A1 (en) * | 2017-10-05 | 2019-04-11 | Asia Vital Components (China) Co., Ltd. | Slim pump structure |
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US11473592B2 (en) * | 2019-08-13 | 2022-10-18 | Emerson Climate Technologies, Inc. | Systems and methods for manufacturing a shrouded impeller |
US11828293B2 (en) | 2018-12-10 | 2023-11-28 | Daikin Industries, Ltd | Closed impeller and method of manufacturing the same |
Families Citing this family (7)
Publication number | Priority date | Publication date | Assignee | Title |
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FR3016134B1 (en) * | 2014-01-08 | 2016-04-15 | Alstom Renewable Technologies | METHOD FOR MANUFACTURING A FRANCIS TYPE WHEEL FOR A HYDRAULIC MACHINE AND A WHEEL MADE BY SUCH A METHOD |
KR20150107471A (en) * | 2014-03-14 | 2015-09-23 | 한화테크윈 주식회사 | Method for joining rotation part of rotary machine |
CN106181270B (en) * | 2016-08-26 | 2018-06-08 | 常州索拉尔熔盐泵阀科技有限公司 | The preparation method of pump for liquid salts combination type blade wheel |
CN107253025A (en) * | 2017-06-14 | 2017-10-17 | 南京辉锐光电科技有限公司 | A kind of impeller manufacture method |
US20220325720A1 (en) * | 2019-12-09 | 2022-10-13 | Danfoss A/S | Compressor shrouded impeller arrangement |
CN115213521A (en) * | 2022-09-19 | 2022-10-21 | 南通惠尔风机有限公司 | Machining device for fan impeller |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5109604A (en) * | 1989-04-20 | 1992-05-05 | Borg-Warner Automotive Transmission & Engine Components Corporation | Method of assembling a torque converter impeller |
US5902498A (en) * | 1994-08-25 | 1999-05-11 | Qqc, Inc. | Methods of joining metal components and resulting articles particularly automotive torque converter assemblies |
JP2002364588A (en) * | 2001-06-05 | 2002-12-18 | Hitachi Ltd | Impeller and its manufacturing method |
Family Cites Families (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS51133807A (en) * | 1975-05-14 | 1976-11-19 | Hitachi Ltd | Turbo type impeller with high performance |
AU4752596A (en) * | 1995-01-23 | 1996-08-14 | Dresser-Rand Company | Energy beam joining process producing a dual weld/braze joint |
JP3180691B2 (en) * | 1996-11-15 | 2001-06-25 | 三菱電機株式会社 | Rotor of cage-type induction motor and method of manufacturing the same |
US6884964B2 (en) * | 2003-01-09 | 2005-04-26 | General Electric Company | Method of weld repairing a component and component repaired thereby |
DE102007041142A1 (en) * | 2007-08-30 | 2009-03-05 | Siemens Ag | Centrifugal compressor impeller |
ATE548540T1 (en) * | 2008-12-24 | 2012-03-15 | Techspace Aero Sa | ROTOR STAGE OF A ONE-PIECE BLADED COMPRESSOR DRUM OF AN AXIAL FLOW MACHINE AND CORRESPONDING PRODUCTION METHOD. |
-
2011
- 2011-09-27 KR KR1020110097570A patent/KR20130033718A/en active Search and Examination
-
2012
- 2012-08-09 US US13/570,576 patent/US20130078099A1/en not_active Abandoned
- 2012-09-25 CN CN2012103620952A patent/CN103008902A/en active Pending
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5109604A (en) * | 1989-04-20 | 1992-05-05 | Borg-Warner Automotive Transmission & Engine Components Corporation | Method of assembling a torque converter impeller |
US5902498A (en) * | 1994-08-25 | 1999-05-11 | Qqc, Inc. | Methods of joining metal components and resulting articles particularly automotive torque converter assemblies |
JP2002364588A (en) * | 2001-06-05 | 2002-12-18 | Hitachi Ltd | Impeller and its manufacturing method |
Non-Patent Citations (2)
Title |
---|
Belohlav, Alan; Understanding Brazing Fundamentals, September/October 2000, The American Welder, www.aws.org/wj/amwelder/9-00/fundamentals.html * |
Welding Resources and Tips, Brazing Techniques, 7/4/2011, www.weldmyworld.com/blog/brazing-techniques.html * |
Cited By (15)
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US20130272883A1 (en) * | 2012-04-17 | 2013-10-17 | Samsung Techwin Co., Ltd. | Impeller and method of manufacturing the same |
US9885365B2 (en) * | 2012-04-17 | 2018-02-06 | Hanwha Techwin Co., Ltd. | Impeller and method of manufacturing the same |
US9441491B2 (en) | 2013-04-12 | 2016-09-13 | Doosan Heavy Industries & Construction Co., Ltd. | Shroud impeller of centrifugal compressor and method of manufacturing the same |
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WO2015104762A1 (en) * | 2014-01-08 | 2015-07-16 | パナソニックIpマネジメント株式会社 | Laser welding method |
US11110547B2 (en) | 2014-01-08 | 2021-09-07 | Panasonic Intellectual Property Management Co., Ltd. | Laser welding method |
US9091277B1 (en) * | 2014-04-25 | 2015-07-28 | Computer Assisted Manufacturing Technology Corporation | Systems and methods for manufacturing a shrouded impeller |
US20160001406A1 (en) * | 2014-07-07 | 2016-01-07 | Hanwha Techwin Co., Ltd. | Rotation part of rotary machine and method of manufacturing the same |
US10124450B2 (en) * | 2014-07-07 | 2018-11-13 | Hanwha Aerospace Co., Ltd. | Rotation part of rotary machine and method of manufacturing the same |
US20190107122A1 (en) * | 2017-10-05 | 2019-04-11 | Asia Vital Components (China) Co., Ltd. | Slim pump structure |
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US11828293B2 (en) | 2018-12-10 | 2023-11-28 | Daikin Industries, Ltd | Closed impeller and method of manufacturing the same |
US11473592B2 (en) * | 2019-08-13 | 2022-10-18 | Emerson Climate Technologies, Inc. | Systems and methods for manufacturing a shrouded impeller |
WO2022106478A1 (en) * | 2020-11-17 | 2022-05-27 | Tata Steel Ijmuiden B.V. | Method for joining steel parts |
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CN103008902A (en) | 2013-04-03 |
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