CN104308356A - Spherical surface friction welding connection structure and connection method - Google Patents

Spherical surface friction welding connection structure and connection method Download PDF

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Publication number
CN104308356A
CN104308356A CN201410497067.0A CN201410497067A CN104308356A CN 104308356 A CN104308356 A CN 104308356A CN 201410497067 A CN201410497067 A CN 201410497067A CN 104308356 A CN104308356 A CN 104308356A
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China
Prior art keywords
component
main member
outside surface
spherical
spherical outside
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CN201410497067.0A
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Chinese (zh)
Inventor
王正
王增全
王阿娜
王秀娟
王晋伟
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China North Industries Group Corp
China North Engine Research Institute Tianjin
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China North Engine Research Institute Tianjin
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Priority to CN201410497067.0A priority Critical patent/CN104308356A/en
Publication of CN104308356A publication Critical patent/CN104308356A/en
Pending legal-status Critical Current

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
    • B23K20/00—Non-electric welding by applying impact or other pressure, with or without the application of heat, e.g. cladding or plating
    • B23K20/12—Non-electric welding by applying impact or other pressure, with or without the application of heat, e.g. cladding or plating the heat being generated by friction; Friction welding
    • B23K20/122—Non-electric welding by applying impact or other pressure, with or without the application of heat, e.g. cladding or plating the heat being generated by friction; Friction welding using a non-consumable tool, e.g. friction stir 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
    • B23K33/00—Specially-profiled edge portions of workpieces for making soldering or welding connections; Filling the seams formed thereby
    • 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

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Pressure Welding/Diffusion-Bonding (AREA)

Abstract

The invention relates to a spherical surface friction welding connection structure and a spherical surface friction welding connection method. The connection structure comprises a secondary member 1 and a primary member 2, wherein a projected spherical outside surface structure is formed on the secondary member 1; the value range of the angle Theta 1 of the spherical outside surface of the secondary member 1 is larger than 0 degree and smaller than 180 degrees; a dented spherical inside surface structure is formed in the primary member 2; the value range of the angle Theta 2 of the spherical inside surface of the primary member 2 is larger than 0 degree and smaller than 180 degrees; the radius R1 of the spherical outside surface of the secondary member 1 is equal to the radius R2 of the spherical inside surface of the primary member 2; the secondary member 1 and the primary member 2 adopt a friction welding process and are connected through friction welding between the spherical outside surface of the secondary member 1 and the spherical inside surface of the primary member 2 so as to form a complete connection structure. According to the connection structure and the connection method, the connection strength can be effectively ensured, the reliable connection between the members is realized, and the connection structure and the connection process are simple and easy to implement.

Description

A kind of sphere friction welding syndeton and method of attachment
Technical field
The invention belongs to frame for movement interconnection technique field, be specifically related to a kind of sphere friction welding syndeton and method of attachment.
Background technology
Turbine is one of kernel component of turbocharger, at present, booster turbine mainly adopts cast nickel-base alloy K418 material, because the density ratio of K418 alloy is larger, the turbine rotation inertia shaping by K418 Alloys Casting is also larger, causes the transient response of turbocharged engine poor.For improving the transient response of turbocharged engine, the titanium-aluminium alloy that turbine can adopt specific strength higher replaces K418 alloy.Titanium-aluminium alloy density is only 43% of K418 alloy density, adopts the booster turbine of titanium-aluminium alloy manufacture significantly can reduce the rotary inertia of turbocharger rotor, improves the transient response of engine.But, because titanium-aluminium alloy belongs to intermetallic compound, by the impact of material property and the restriction of booster turbine cast shaping process, by the problem of the booster turbine ubiquity heart portion poor-performing of titanium-aluminium alloy casting.For improving titanium-aluminum alloy turbine heart portion intensity, turbine hub can adopt alloy bar material to process, and wheel disk of turbine can adopt casting, then wheel hub and wheel disc is joined together to form complete turbine.
But by the bulk restriction of booster turbine and for meeting turbine core portion requirement of strength, the connection between turbine hub with wheel disc is difficult to the connected modes such as employing is threaded, interference connection, riveted joint and realizes reliable connection.Such as, if adopt thread connecting mode to realize the connection of turbine hub and wheel disc, existence is threadedly engaged face by the connecting portion of wheel hub and wheel disc, because radial compressive stress can only be born in this composition surface, and radial pressure can not be born, during booster turbine work, under Centrifugal Load, larger radial action of pulling stress will be born in the connecting portion composition surface of turbine hub and wheel disc, and under this radial action of pulling stress, turbine can ftracture from the connecting portion of wheel hub and wheel disc.If adopt riveting mode, the connecting portion of turbine hub and wheel disc can not bear radial tension.If adopt interference connected mode, the wheel hub of turbine is same with wheel disc connecting portion can not bear radial tension, and the interference power that connecting portion produces can make turbine bear larger prestressing force effect, reduces the reliability of turbine.
Summary of the invention
The present invention solves the connectivity problem between component, proposes a kind of sphere friction welding syndeton and method of attachment.
Syndeton forms by from component and main member, wherein, have the spherical outside surface structure of protrusion from component, main member has the Internal Spherical Surface structure fallen in, the friction welding passed through between the spherical outside surface of protrusion and the Internal Spherical Surface fallen in from component and main member links together.By analyzing design feature and the stress-space distribution characteristics of syndeton, the dimensional parameters of appropriate design spherical outside surface structure and Internal Spherical Surface structure.According to syndeton composition component namely from component and the material property parameter of main member and the dimensional parameters of spherical outside surface structure and Internal Spherical Surface structure, determine friction-welding technique parameter, the friction welding between the spherical outside surface adopting the mode of friction welding to pass through to protrude and the Internal Spherical Surface fallen in will link together from component and main member.
Technical scheme of the present invention:
A kind of sphere friction welding syndeton, comprises from component 1 and main member 2, the described spherical outside surface structure having protrusion from component 1, the described spherical outside surface angle θ from component 1 1refer to spherical outside surface and by the centre of sphere and angle corresponding to the circular arc that formed of the Plane intersects of dividing spherical outside surface equally, spherical outside surface angle θ 1span be 0 < θ 1< 180 °, described main member 2 has the Internal Spherical Surface structure fallen in, the Internal Spherical Surface angle θ of described main member 2 2refer to Internal Spherical Surface and by the centre of sphere and angle corresponding to the circular arc that formed of the Plane intersects of dividing Internal Spherical Surface equally, Internal Spherical Surface angle θ 2span be 0 < θ 2< 180 °; The described spherical outside surface radius R from component 1 1with the inner sphere radius R of main member 2 2equal; Describedly adopting friction-welding technique from component 1 and main member 2, by linking together from the friction welding (FW) between component 1 spherical outside surface A and main member 2 Internal Spherical Surface B, forming complete syndeton.
A kind of sphere friction welding method of attachment, comprises the following steps:
A, determine syndeton stress-space distribution characteristics operationally: adopt finite element stimulation method determination syndeton stress-space distribution characteristics operationally;
B, determine the composition component spherical outside surface of syndeton and the dimensional parameters of Internal Spherical Surface: according to design feature and the stress-space distribution characteristics of syndeton, determine the Internal Spherical Surface dimensional parameters of spherical outside surface from component 1 and main member 2, wherein, from the spherical outside surface angle θ of component 1 1refer to spherical outside surface and by the centre of sphere and angle corresponding to the circular arc that formed of the Plane intersects of dividing spherical outside surface equally, from the spherical outside surface angle θ of component 1 1span is 0 < θ 1< 180 °, the Internal Spherical Surface angle θ of main member 2 2refer to Internal Spherical Surface and by the centre of sphere and angle corresponding to the circular arc that formed of the Plane intersects of dividing Internal Spherical Surface equally, the Internal Spherical Surface angle θ of main member 2 2span is 0 < θ 2< 180 °, from the spherical outside surface radius R of component 1 1with the inner sphere radius R of main member 2 2equal, from the spherical outside surface angle θ of component 1 1be greater than the Internal Spherical Surface angle θ of main member 2 2;
C, convex spheroid machining from component 1: according to the spherical outside surface radius R from component 1 determined step b 1with angle θ 1carry out the processing from component 1;
The inner sphere working of d, main member 2: according to the inner sphere radius R of the main member 2 determined in step b 2with angle θ 2carry out the processing of main member 2;
E, determine from friction-welding technique parameter with main member 2 of component 1: according to from the material property parameter of the material property parameter of component 1 and spherical outside surface dimensional parameters and main member 2 and Internal Spherical Surface dimensional parameters, determine from the friction-welding technique parameter between component 1 and main member 2, technological parameter comprises from relative rotation angle speed, axial force and the amount of feeding between component 1 and main member 2;
F, from friction welding with main member 2 of component 1: adopt friction welding mode, friction-welding machine utilize fixture will be separately fixed at two ends from component 1 and main member 2, according to the welding condition that step e determines, by forming complete syndeton from the friction welding of component 1 spherical outside surface and main member 2 Internal Spherical Surface.
The invention has the beneficial effects as follows: by analyzing feature and the stress-space distribution characteristics of syndeton, appropriate design syndeton composition is from the dimensional parameters of the Internal Spherical Surface of the spherical outside surface of component 1 and main member 2, determine from the friction-welding technique parameter between component 1 and main member 2, adopt friction welding mode to be welded together to form complete syndeton by from component 1 and main member 2.Adopt the method and structure effectively can ensure the bonding strength of syndeton, syndeton and Joining Technology simple, connecting portion not only can bear tension but also can bear compression and shear stress, and has the feature in not occupying volume outside dimension space.Particularly for turbine and the impeller of casting, for improving the heart portion intensity of turbine and impeller, wheel hub and wheel disc can separate machined, wheel hub is as from component 1, and wheel hub adopts alloy bar material to process, and wheel disc is as main member 2, wheel disc adopts casting, wheel hub comprises the location of maximum stress in turbine or bead core portion, and wheel hub spherical outside surface radius is equal with wheel disc inner sphere radius, and the spherical outside surface angle of wheel hub is greater than the Internal Spherical Surface angle of wheel disc.Wheel hub and wheel disc are joined together to form complete turbine or impeller by friction welding (FW), adopt this syndeton and method of attachment significantly can promote the heart portion intensity of turbine and impeller, improve reliability and the life-span of turbine and impeller.
Accompanying drawing explanation
Fig. 1 is the structural representation from component 1.
Fig. 2 is the structural representation of main member 2.
1 from component 12 main member 2
Fig. 3 is the syndeton schematic diagram formed from component 1 and main member 2 friction welding.
Detailed description of the invention
A kind of sphere friction welding syndeton, syndeton forms by from component 1 and main member 2, the described spherical outside surface structure having protrusion from component 1, the described spherical outside surface angle θ from component 1 1span is 0 < θ 1< 180 °, described main member 2 has the Internal Spherical Surface structure fallen in, the Internal Spherical Surface angle θ of described main member 2 2span is 0 < θ 2< 180 °, the described spherical outside surface radius R from component 1 1with the inner sphere radius R of main member 2 2equal, the described spherical outside surface angle θ from component 1 1be greater than the Internal Spherical Surface angle θ of main member 2 2, describedly to be linked together from component 1 and main member 2 by the friction welding (FW) between spherical outside surface A and Internal Spherical Surface B.
Preferably from the spherical outside surface angle θ of component 1 1be greater than the Internal Spherical Surface angle θ of main member 2 2, be conducive to the bonding strength and the integrality that ensure syndeton friction welding position, improve welding quality.
For turbine and the impeller of casting, for improving the heart portion intensity of turbine and impeller, wheel hub and wheel disc can separate machined, wherein, for turbine or the impeller of casting, wheel hub and wheel disc separate machined, wheel hub is as from component 1, wheel hub there is the spherical outside surface structure of protrusion, wheel hub adopts alloy bar material to process, wheel disc is as main member 2, wheel disc there is the Internal Spherical Surface structure fallen in, wheel disc adopts casting, wheel hub comprises the location of maximum stress in turbine or bead core portion, wheel hub and wheel disc are joined together to form complete turbine or impeller by friction welding (FW), the spherical outside surface radius of wheel hub is equal with the inner sphere radius of wheel disc, and the spherical outside surface angle of wheel hub is greater than the Internal Spherical Surface angle of wheel disc.Adopt sphere friction welding syndeton significantly can promote the heart portion intensity of turbine and impeller, improve reliability and the life-span of turbine and impeller.
A kind of sphere friction welding method of attachment, comprises the following steps:
A, determine syndeton stress-space distribution characteristics operationally: adopt finite element stimulation method determination syndeton stress-space distribution characteristics operationally.
B, determine the composition component spherical outside surface of syndeton and the dimensional parameters of Internal Spherical Surface: according to design feature and the stress-space distribution characteristics of syndeton, determine the Internal Spherical Surface dimensional parameters of spherical outside surface from component 1 and main member 2, wherein, from the spherical outside surface angle θ of component 1 1span is 0 < θ 1< 180 °, the Internal Spherical Surface angle θ of main member 2 2span is 0 < θ 2< 180 °, from the spherical outside surface radius R of component 1 1with the inner sphere radius R of main member 2 2equal, from the spherical outside surface angle θ of component 1 1be greater than the Internal Spherical Surface angle θ of main member 2 2.Such as, for diameter be Φ 95mm, thickness is the cast ti al alloy booster turbine of 39.5mm, is improve turbine core portion intensity, wheel hub is as from component 1, wheel disc as main member 2, according to design feature and the heart portion stress-space distribution characteristics of turbine, the wheel hub spherical outside surface radius R determined 1for 24mm, the spherical outside surface angle θ of wheel hub 1be 125 °, the wheel disc inner sphere radius R determined 2for 24mm, the Internal Spherical Surface angle θ of wheel disc 2it is 120 °, as depicted in figs. 1 and 2.
C, convex spheroid machining from component 1: according to the spherical outside surface radius R from component 1 determined step b 1with angle θ 1carry out the processing from component 1.Such as, for cast ti al alloy booster turbine, be improve turbine core portion intensity, wheel hub as from component 1, the spherical outside surface radius R that wheel hub can adopt titanium-aluminium alloy bar to determine according to step b 1with angle θ 1process.
The inner sphere working of d, main member 2: according to the inner sphere radius R of the main member 2 determined in step b 2with angle θ 2carry out the processing of main member 2.Such as, for cast ti al alloy booster turbine, be improve turbine core portion intensity, wheel disc as main member 2, wheel disc on the basis of casting according to the inner sphere radius R that step b determines 2with angle θ 2process.
E, determine from friction-welding technique parameter with main member 2 of component 1: according to from the material property parameter of the material property parameter of component 1 and spherical outside surface dimensional parameters and main member 2 and Internal Spherical Surface dimensional parameters, determine that, from the friction-welding technique parameter between component 1 and main member 2, technological parameter comprises from relative rotation angle speed, axial force and the amount of feeding between component 1 and main member 2.
F, from friction welding with main member 2 of component 1: adopt friction welding mode, friction-welding machine utilize fixture will be separately fixed at two ends from component 1 and main member 2, according to the welding condition that step e determines, by the complete syndeton formed from the friction welding between component 1 spherical outside surface A and main member 2 Internal Spherical Surface B, as shown in Figure 3.Such as, for cast ti al alloy booster turbine, for improving turbine core portion intensity, wheel hub is as from component 1, wheel hub and wheel disc, as main member 2, are separately fixed at two clamping ends of friction-welding machine by wheel disc, adopt friction welding mode, according to the welding condition determined, the complete turbine formed by the friction welding between wheel hub spherical outside surface and wheel disc Internal Spherical Surface.

Claims (4)

1. a sphere friction welding syndeton, comprises from component 1 and main member 2, it is characterized in that: the described spherical outside surface structure having protrusion from component 1, the described spherical outside surface angle θ from component 1 1span is 0 < θ 1< 180 °, described main member 2 has the Internal Spherical Surface structure fallen in, the Internal Spherical Surface angle θ of described main member 2 2span is 0 < θ 2< 180 °; The described spherical outside surface radius R from component 1 1with the inner sphere radius R of main member 2 2equal; Describedly adopting friction-welding technique from component 1 and main member 2, by linking together from the friction welding (FW) between component 1 spherical outside surface and main member 2 Internal Spherical Surface, forming complete syndeton.
2. a kind of sphere friction welding syndeton according to claim 1, is characterized in that: the described spherical outside surface angle θ from component 1 1be greater than the Internal Spherical Surface angle θ of main member 2 2.
3. a kind of sphere friction welding syndeton according to claim 1, it is characterized in that: for turbine or the impeller of casting, wheel hub and wheel disc separate machined, wheel hub is as from component 1, wheel hub there is the spherical outside surface structure of protrusion, wheel hub adopts alloy bar material to process, wheel disc is as main member 2, wheel disc there is the Internal Spherical Surface structure fallen in, wheel disc adopts casting, wheel hub comprises the location of maximum stress in turbine or bead core portion, and wheel hub and wheel disc are joined together to form complete turbine or impeller by friction welding (FW); The spherical outside surface radius of wheel hub is equal with the inner sphere radius of wheel disc, and the spherical outside surface angle of wheel hub is greater than the Internal Spherical Surface angle of wheel disc.
4. a sphere friction welding method of attachment, is characterized in that: comprise the following steps:
A, determine syndeton stress-space distribution characteristics operationally: adopt finite element stimulation method determination syndeton stress-space distribution characteristics operationally;
B, determine the composition component spherical outside surface of syndeton and the dimensional parameters of Internal Spherical Surface: according to design feature and the stress-space distribution characteristics of syndeton, determine the Internal Spherical Surface dimensional parameters of spherical outside surface from component 1 and main member 2, wherein, from the spherical outside surface angle θ of component 1 1span is 0 < θ 1< 180 °, the Internal Spherical Surface angle θ of main member 2 2span is 0 < θ 2< 180 °, from the spherical outside surface radius R of component 1 1with the inner sphere radius R of main member 2 2equal, from the spherical outside surface angle θ of component 1 1be greater than the Internal Spherical Surface angle θ of main member 2 2;
C, convex spheroid machining from component 1: according to the spherical outside surface radius R from component 1 determined step b 1with angle θ 1carry out the processing from component 1;
The inner sphere working of d, main member 2: according to the inner sphere radius R of the main member 2 determined in step b 2with angle θ 2carry out the processing of main member 2;
E, determine from friction-welding technique parameter with main member 2 of component 1: according to from the material property parameter of the material property parameter of component 1 and spherical outside surface dimensional parameters and main member 2 and Internal Spherical Surface dimensional parameters, determine from the friction-welding technique parameter between component 1 and main member 2, technological parameter comprises from relative rotation angle speed, axial force and the amount of feeding between component 1 and main member 2;
F, from friction welding with main member 2 of component 1: adopt friction welding mode, friction-welding machine utilize fixture will be separately fixed at two ends from component 1 and main member 2, according to the welding condition that step e determines, by forming complete syndeton from the friction welding of component 1 spherical outside surface and main member 2 Internal Spherical Surface.
CN201410497067.0A 2014-09-17 2014-09-17 Spherical surface friction welding connection structure and connection method Pending CN104308356A (en)

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Application Number Priority Date Filing Date Title
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Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0052913A1 (en) * 1980-11-20 1982-06-02 Ngk Insulators, Ltd. Ceramic rotor
JPH03281902A (en) * 1990-08-29 1991-12-12 Ngk Insulators Ltd Radial type ceramic rotor
CN1693675A (en) * 2005-05-17 2005-11-09 江津增压器厂 Manufacturing method of small sized turbine shaft
GB2462275A (en) * 2008-07-31 2010-02-03 Cummins Turbo Tech Ltd A method of connection a turbine shaft to a rotor
CN103862234A (en) * 2014-02-13 2014-06-18 中国北方发动机研究所(天津) Method and structure for improving strength performance of central part of supercharger turbine

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0052913A1 (en) * 1980-11-20 1982-06-02 Ngk Insulators, Ltd. Ceramic rotor
JPH03281902A (en) * 1990-08-29 1991-12-12 Ngk Insulators Ltd Radial type ceramic rotor
CN1693675A (en) * 2005-05-17 2005-11-09 江津增压器厂 Manufacturing method of small sized turbine shaft
GB2462275A (en) * 2008-07-31 2010-02-03 Cummins Turbo Tech Ltd A method of connection a turbine shaft to a rotor
CN103862234A (en) * 2014-02-13 2014-06-18 中国北方发动机研究所(天津) Method and structure for improving strength performance of central part of supercharger turbine

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Application publication date: 20150128