CN106141412A - A kind of nozzle throat auxiliary mould and welding method thereof - Google Patents
A kind of nozzle throat auxiliary mould and welding method thereof Download PDFInfo
- Publication number
- CN106141412A CN106141412A CN201610686229.4A CN201610686229A CN106141412A CN 106141412 A CN106141412 A CN 106141412A CN 201610686229 A CN201610686229 A CN 201610686229A CN 106141412 A CN106141412 A CN 106141412A
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- CN
- China
- Prior art keywords
- inner housing
- supporting tool
- connecting tooling
- shell body
- nozzle throat
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K20/00—Non-electric welding by applying impact or other pressure, with or without the application of heat, e.g. cladding or plating
- B23K20/02—Non-electric welding by applying impact or other pressure, with or without the application of heat, e.g. cladding or plating by means of a press ; Diffusion bonding
-
- 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
- B23K20/26—Auxiliary equipment
Abstract
The invention provides a kind of nozzle throat auxiliary mould and welding method thereof, nozzle throat auxiliary mould is applied at nozzle throat, and described nozzle throat includes: shell body and be arranged on the inner housing within described shell body；Described nozzle throat auxiliary mould includes: supporting tool is arranged on the end of described inner housing, is used for supporting described inner housing；Connecting tooling is connected with described supporting tool；Utilize vacuum pressure diffusion welding machine that described inner housing is welded with described shell body so that inner housing is connected with shell body；When welding, auxiliary mould is utilized to be supported by inner housing, it is to avoid inner housing and shell body deform at high temperature under high pressure；The material of described inner housing is copper, the material of described shell body is rustless steel, so, utilize vacuum pressure diffusion welding machine welding oxygen-free copper and steel part, inner housing is made to realize being reliably connected with the contact interface generation atom phase counterdiffusion of shell body, fundamentally solve weld seam hidden danger, improve product quality and service life.
Description
Technical field
The invention belongs to wind tunnel technique field, particularly relate to a kind of nozzle throat auxiliary mould and welding method thereof.
Background technology
In wind tunnel experiment, jet pipe is requisite experimental facilities, and predominantly wind tunnel experiment provides air-flow real to ensure
Test and can be smoothed out.
At present, the version of nozzle throat generally comprises two kinds: the first is spiro connection structure, i.e. two ends use sealing ring
Mode seals, and the shortcoming of this kind of structure is to seal to coordinate surface accuracy to require height, assembling inconvenience, and sealing ring is at High Temperature High Pressure shape
Under state the most aging；The second is melting welding structure, will the left and right flange of jet pipe be welded into one with housing, and the shortcoming of this kind of structure is
During different-metal material welding, such as: copper and stainless steel welded time, there is certain welding hidden danger.
Based on this, need a kind of novel nozzle throat auxiliary mould and welding method thereof at present badly, to solve prior art
In the problems referred to above.
Summary of the invention
The problem existed for prior art, embodiments provides a kind of nozzle throat auxiliary mould and welding thereof
Method, is used for solving nozzle throat weld seam changeableness when welding in prior art, there is welding hidden danger and service life is short
Technical problem.
The present invention provides a kind of nozzle throat auxiliary mould, applies at nozzle throat, and described nozzle throat includes: shell body
And it is arranged on the inner housing within described shell body；
Described nozzle throat auxiliary mould includes:
Supporting tool, described supporting tool is arranged on the end of described inner housing, is used for supporting described inner housing；
Connecting tooling, described connecting tooling is connected with described supporting tool.
In such scheme, described inner housing utilizes vacuum pressure diffusion welding machine to weld with described shell body.
In such scheme, described supporting tool includes:
First supporting tool, described first supporting tool is arranged on one end of described inner housing；
Second supporting tool, described second supporting tool is arranged on the other end of described inner housing.
In such scheme, described connecting tooling includes:
First connecting tooling, the first junction phase of one end of described first connecting tooling and described first supporting tool
Even, the other end of described first connecting tooling is connected with the first junction of described second supporting tool；
Second connecting tooling, the second junction phase of one end of described second connecting tooling and described first supporting tool
Even, the other end of described second connecting tooling is connected with the second junction of described second supporting tool；
3rd connecting tooling, one end of described 3rd connecting tooling and the 3rd junction phase of described first supporting tool
Even, the other end of described 3rd connecting tooling is connected with the 3rd junction of described second supporting tool；
4th connecting tooling, one end of described 4th connecting tooling and the 4th junction phase of described first supporting tool
Even, the other end of described 4th connecting tooling is connected with the 4th junction of described second supporting tool.
The present invention also provides for the welding method of a kind of nozzle throat auxiliary mould, is applied on nozzle throat auxiliary mould,
Described nozzle throat includes: shell body and be arranged on the inner housing within described shell body；Described method includes:
The inner housing of described nozzle throat is docked with described shell body；
Supporting tool is arranged on the end of described inner housing；
Described connecting tooling is connected with described supporting tool；
Utilize welding machine that described inner housing is welded with described shell body.
In such scheme, when utilizing welding machine that described inner housing is welded with described shell body, the welding of described welding machine
Temperature is 800～970 DEG C；The welding pressure of described welding machine is 10～13.7MPa.
In such scheme, described supporting tool includes: the first supporting tool and the second supporting tool；Wherein, work will be supported
Dress is arranged on the end of described inner housing and specifically includes:
Described first supporting tool is arranged on one end of described inner housing；
Described second supporting tool is arranged on the other end of described inner housing.
In such scheme, described connecting tooling includes: the first connecting tooling, the second connecting tooling, the 3rd connecting tooling and
4th connecting tooling；Wherein, described connecting tooling be connected with described supporting tool specifically include:
One end of described first connecting tooling is connected with the first junction of described first supporting tool, by described first
The other end of connecting tooling is connected with the first junction of described second supporting tool；
One end of described second connecting tooling is connected with the second junction of described first supporting tool, by described second
The other end of connecting tooling is connected with the second junction of described second supporting tool；
One end of described 3rd connecting tooling is connected with the 3rd junction of described first supporting tool, by the described 3rd
The other end of connecting tooling is connected with the 3rd junction of described second supporting tool；
One end of described 4th connecting tooling is connected with the 4th junction of described first supporting tool, by the described 4th
The other end of connecting tooling is connected with the 4th junction of described second supporting tool.
In such scheme, after utilizing welding machine to weld described inner housing with described shell body, described method also includes:
Described nozzle throat is incubated 20～30min.
In such scheme, described welding machine specifically includes vacuum pressure diffusion welding machine.
The invention provides a kind of nozzle throat auxiliary mould and welding method thereof, described auxiliary mould is applied at jet pipe larynx
Road, described nozzle throat includes: shell body and be arranged on the inner housing within described shell body；Described nozzle throat auxiliary mould
Including: supporting tool, described supporting tool is arranged on the end of described inner housing, is used for supporting described inner housing；Connecting tooling,
Described connecting tooling is connected with described supporting tool；Wherein, utilize vacuum pressure diffusion welding machine to described inner housing with described outside
Housing welds so that described inner housing is connected with described shell body；When welding, auxiliary mould is utilized to be supported by inner housing
Get up, it is to avoid inner housing and shell body deform at high temperature under high pressure；The material of described inner housing is copper, the material of described shell body
For rustless steel, so, utilizing vacuum pressure diffusion welding machine welding oxygen-free copper and steel part, make inner housing and shell body contacts boundary
Face occurs atom phase counterdiffusion to realize being reliably connected, and fundamentally solves weld seam hidden danger, improves product quality and use
Life-span.
Accompanying drawing explanation
Overall structure when Fig. 1 is connected with nozzle throat for the nozzle throat auxiliary mould that the embodiment of the present invention one provides is shown
It is intended to；
The front view of the inner housing that Fig. 2 provides for the embodiment of the present invention one；
The welding method schematic flow sheet of the nozzle throat auxiliary mould that Fig. 3 provides for the embodiment of the present invention two.
Detailed description of the invention
In order to fundamentally solve the weld seam hidden danger of nozzle throat, improving product quality and service life, the present invention carries
Having supplied a kind of nozzle throat auxiliary mould, applied at nozzle throat, described nozzle throat includes: shell body and be arranged on described outside
The inner housing of enclosure interior；Described nozzle throat auxiliary mould includes: supporting tool, and described supporting tool is arranged on described inner shell
The end of body, is used for supporting described inner housing；Connecting tooling, described connecting tooling is connected with described supporting tool.
Below by drawings and the specific embodiments, technical scheme is described in further detail.
Embodiment one
The present embodiment provides a kind of nozzle throat auxiliary mould, applies at nozzle throat, as it is shown in figure 1, described jet pipe larynx
Road includes: inner housing 1, shell body 2；Described auxiliary mould includes: supporting tool and connecting tooling；Wherein, described inner housing 1
Front view is as shown in Figure 2；
It is internal that described inner housing 1 is arranged on described shell body 2；Described supporting tool is arranged on the end of described inner housing 1,
For supporting described inner housing 1；Described connecting tooling is connected with described supporting tool；Wherein, vacuum pressure diffusion welding machine is utilized
Described inner housing 1 is welded with described shell body 2 so that described inner housing 1 is connected with described shell body 2.
Further, inner housing 1 docks with shell body 2 assembling for convenience, and described inner housing 1 includes two sections.Inner housing 1
With shell body 2 to connecting after, the profile (diameter of bore) of described inner housing 1, the profile (outside diameter) of shell body 2, end face
All it is reserved with allowance, to ensure the precision of follow-up digital control processing.Wherein, the allowance of described inner housing 1 diameter of bore
For 1mm, shell body 2 diameter, inner housing 1 are 3～5mm with the allowance of shell body 2 end face, it is therefore preferable to 4mm；In described
Housing 1 endoporus two ends axiality is 0.015mm, and shell body 2 both ends of the surface are 0.02mm with the perpendicularity of inner housing 1 endoporus.
Here, the inwall of described inner housing 1 is provided with tank gusset (cooling water channel), enters with the air-flow to nozzle throat
Row cooling, its intensity of cooling increases along with the increase of cooling water channel.
Here, during because utilizing vacuum pressure diffusion welding machine that nozzle throat is welded, in order to avoid inner housing 1 and shell
Body 2 deforms because of High Temperature High Pressure, sees Fig. 1, and described supporting tool includes: the first supporting tool 3 and the second supporting tool 4, described
First supporting tool 3 is arranged on one end of described inner housing 1；, described second supporting tool 4 is arranged on the another of described inner housing 1
One end.
In order to consolidate supporting tool, seeing Fig. 1, described connecting tooling includes: first connecting tooling the 5, second connecting tooling
6, the 3rd connecting tooling and the 4th connecting tooling；Wherein,
One end of described first connecting tooling 5 is connected with the first junction of described first supporting tool 3, and described first even
First junction of the other end and described second supporting tool 4 that connect frock 5 is connected；
One end of described second connecting tooling 6 is connected with the second junction of described first supporting tool 3, and described second even
Second junction of the other end and described second supporting tool 4 that connect frock is connected；
One end of described 3rd connecting tooling is connected with the 3rd junction of described first supporting tool 3, and the described 3rd even
3rd junction of the other end and described second supporting tool 4 that connect frock is connected；
4th connecting tooling, the 4th junction phase of one end of described 4th connecting tooling and described first supporting tool 3
Even, the other end of described 4th connecting tooling is connected with the 4th junction of described second supporting tool 4.
Here, when utilizing vacuum pressure diffusion welding machine that described inner housing 1 is welded with described shell body 2, described very
The welding temperature of pneumatics power diffusion welding machine is 800～970 DEG C, and preferred weld temperature is 850～950 DEG C, preferred weld temperature spot
It it is 890 DEG C；The welding pressure of described vacuum pressure diffusion welding machine is 10～13.7MPa, and preferred weld pressure is 11～13MPa,
Preferred weld pressure spot is 12.8MPa.After welding is complete, also needing nozzle throat is incubated 20～30min, the preferably time is
20min。
After welding, described nozzle throat through ultrasound examination, all to air-tightness, weld seam that watertightness is relevant, weldering
Seam quality is satisfied by I level weld seam requirement in the requirement of steel melting welding head and defect rank GB/T12469.Cooling water channel is carried out
The 5MPa water pressure test, ne-leakage and deformation in 5min；The inner chamber of inner housing 1 does the 7.5MPa water pressure test, in 5min ne-leakage and
Deformation.Through vacuum leak hunting, described nozzle throat is pressurize 5min when pressure is less than 10Pa, and leak rate is less than 0.01Pa.L/S.
The nozzle throat auxiliary mould that the present embodiment provides, when the mode using vacuum diffusion welding realizes inside and outside nozzle throat
During the welding of housing unlike material, it is to avoid inner housing and shell body deformation, it is to avoid the welding hidden danger of weld seam, extend jet pipe larynx
The service life in road.
Embodiment two
Corresponding to embodiment one, present embodiments provide the welding method of a kind of nozzle throat auxiliary mould, such as Fig. 3 institute
Show, said method comprising the steps of:
Step 310, docks the inner housing of described nozzle throat with described shell body.
In this step, described nozzle throat includes: shell body and be arranged on the inner housing within described shell body；Described auxiliary
Assistant engineer's dress is applied on nozzle throat, and inner housing docks with shell body assembling for convenience, and described inner housing includes two sections, described
Inner housing is arranged on inside shell body；Supporting tool is arranged on the end of described inner housing, is used for supporting described inner housing；Connect
Frock is connected with described supporting tool.
After inner housing and shell body are to connecting, the profile (diameter of bore) of described inner housing, the profile of shell body, end face
All it is reserved with allowance, to ensure the precision of follow-up digital control processing.Wherein, the allowance of described inner housing diameter of bore is
1mm, shell body diameter, inner housing are 3～5mm with the allowance of shell body end face, it is therefore preferable to 4mm；Described inner housing
Endoporus two ends axiality is 0.015mm, and shell body both ends of the surface are 0.02mm with the perpendicularity of inner housing endoporus.
Here, the inwall of described inner housing is provided with tank gusset (cooling water channel), enters with the air-flow to nozzle throat
Row cooling, its intensity of cooling increases along with the increase of cooling water channel.
Step 311, is arranged on the end of described inner housing by supporting tool.
In this step, when utilizing vacuum pressure diffusion welding machine that nozzle throat is welded, in order to avoid inner housing is with outer
Housing deforms because of High Temperature High Pressure, and supporting tool is arranged on the end of described inner housing.Seeing Fig. 1, described supporting tool includes:
First supporting tool and the second supporting tool, described first supporting tool is arranged on one end of described inner housing；, described second
Support frock is arranged on the other end of described inner housing.
In order to consolidate supporting tool, seeing Fig. 1, described connecting tooling includes: the first connecting tooling, the second connecting tooling,
3rd connecting tooling and the 4th connecting tooling；Wherein,
One end of described first connecting tooling is connected with the first junction of described first supporting tool, by described first
The other end of connecting tooling is connected with the first junction of described second supporting tool；
One end of described second connecting tooling is connected with the second junction of described first supporting tool, by described second
The other end of connecting tooling is connected with the second junction of described second supporting tool；
One end of described 3rd connecting tooling is connected with the 3rd junction of described first supporting tool, by the described 3rd
The other end of connecting tooling is connected with the 3rd junction of described second supporting tool；
One end of described 4th connecting tooling is connected with the 4th junction of described first supporting tool, by the described 4th
The other end of connecting tooling is connected with the 4th junction of described second supporting tool.
Step 312, utilizes welding machine to weld described inner housing with described shell body.
In this step, when described inner housing dock with described shell body complete after, after auxiliary mould installs, profit
With vacuum pressure diffusion welding machine, described inner housing is welded with described shell body, the welding of described vacuum pressure diffusion welding machine
Temperature is 800～970 DEG C, and preferred weld temperature is 850～950 DEG C, and preferred weld temperature spot is 890 DEG C；Described vacuum pressure
The welding pressure of diffusion welding machine is 10～13.7MPa, and preferred weld pressure is 11～13MPa, and preferred weld pressure spot is
12.8MPa.After welding is complete, also needing nozzle throat is incubated 20～30min, the preferably time is 20min.
After welding, described auxiliary mould is removed, described nozzle throat through ultrasound examination, all with air-tightness,
The weld seam that watertightness is relevant, weldquality is satisfied by I level weld seam requirement in GB/T12469.Cooling water channel carries out 5MPa hydraulic pressure examination
Test, ne-leakage and deformation in 5min；The inner chamber of inner housing 1 does the 7.5MPa water pressure test, ne-leakage and deformation in 5min.Through vacuum
Leak detection, described nozzle throat is pressurize 5min when pressure is less than 10Pa, and leak rate is less than 0.01Pa.L/S.
The welding method of the nozzle throat auxiliary mould that the present embodiment provides, when the mode using vacuum diffusion welding realizes spray
During the welding of pipe venturi inner and outer shell unlike material, it is to avoid inner housing and shell body deformation, it is to avoid the welding hidden danger of weld seam, prolong
Grow the service life of nozzle throat.
Embodiment three
During actual application, utilize nozzle throat auxiliary mould and the nozzle throat of embodiment two offer that embodiment one provides
When auxiliary mould welding method is welded, idiographic flow is as follows:
First, the inner housing of described nozzle throat is docked with described shell body.Described nozzle throat includes: shell body and
It is arranged on the inner housing within described shell body；Described auxiliary mould is applied on nozzle throat, specifically, and inner shell for convenience
Body docks with shell body assembling, and described inner housing includes two sections, and described inner housing is arranged on inside shell body；Supporting tool is installed
In the end of described inner housing, it is used for supporting described inner housing；Connecting tooling is connected with described supporting tool.Described inner housing 1
Front view as shown in Figure 2.
After inner housing and shell body are to connecting, the profile of described inner housing, the profile of shell body, end face are all reserved with and add
Spare time measures, to ensure the precision of follow-up digital control processing.Wherein, the allowance of described inner housing diameter of bore is 1mm, shell body
Diameter, inner housing are 3～5mm with the allowance of shell body end face, it is therefore preferable to 4mm；Described inner housing endoporus two ends are same
Axle degree is 0.015mm, and shell body both ends of the surface are 0.02mm with the perpendicularity of inner housing endoporus.
Here, the inwall of described inner housing is provided with tank gusset (cooling water channel), enters with the air-flow to nozzle throat
Row cooling, its intensity of cooling increases along with the increase of cooling water channel.
Here, during because utilizing vacuum pressure diffusion welding machine that nozzle throat is welded, in order to avoid inner housing and shell
Body deforms because of High Temperature High Pressure, and supporting tool is arranged on the end of described inner housing.Seeing Fig. 1, described supporting tool includes: the
One supporting tool and the second supporting tool, described first supporting tool is arranged on one end of described inner housing；, described second supports
Frock is arranged on the other end of described inner housing.
In order to consolidate supporting tool, seeing Fig. 1, described connecting tooling includes: the first connecting tooling, the second connecting tooling,
3rd connecting tooling and the 4th connecting tooling；Wherein,
One end of described first connecting tooling is connected with the first junction of described first supporting tool, by described first
The other end of connecting tooling is connected with the first junction of described second supporting tool；
One end of described second connecting tooling is connected with the second junction of described first supporting tool, by described second
The other end of connecting tooling is connected with the second junction of described second supporting tool；
One end of described 3rd connecting tooling is connected with the 3rd junction of described first supporting tool, by the described 3rd
The other end of connecting tooling is connected with the 3rd junction of described second supporting tool；
One end of described 4th connecting tooling is connected with the 4th junction of described first supporting tool, by the described 4th
The other end of connecting tooling is connected with the 4th junction of described second supporting tool
When described inner housing dock with described shell body complete after, after auxiliary mould installs, utilize Vacuum Pressure
Described inner housing is welded by power diffusion welding machine with described shell body, and the welding temperature of described vacuum pressure diffusion welding machine is
890℃；The welding pressure of described vacuum pressure diffusion welding machine is 12.8MPa.After welding is complete, also need nozzle throat is protected
Temperature 20min.
After welding, described auxiliary mould is removed, described nozzle throat through ultrasound examination, all with air-tightness,
The weld seam that watertightness is relevant, weldquality is satisfied by I level weld seam requirement in GB/T12469.Cooling water channel carries out 5MPa hydraulic pressure examination
Test, ne-leakage and deformation in 5min；The inner chamber of inner housing 1 does the 7.5MPa water pressure test, ne-leakage and deformation in 5min.Through vacuum
Leak detection, described nozzle throat is pressurize 5min when pressure is less than 10Pa, and leak rate is less than 0.01Pa.L/S.
Nozzle throat auxiliary mould and the nozzle throat of embodiment two offer that the present embodiment employing embodiment one provides are auxiliary
Assistant engineer fills welding method, when utilizing the welding that the mode of vacuum diffusion welding realizes nozzle throat inner and outer shell unlike material, it is to avoid
Inner housing and shell body deformation, it is to avoid the welding hidden danger of weld seam, extend the service life of nozzle throat.
Embodiment four
During actual application, when nozzle throat auxiliary mould is welded by the method utilizing embodiment two to provide, specifically flow
Journey is as follows:
First, the inner housing of described nozzle throat is docked with described shell body.Described nozzle throat includes: shell body and
It is arranged on the inner housing within described shell body；Described auxiliary mould is applied on nozzle throat, specifically, and inner shell for convenience
Body docks with shell body assembling, and described inner housing includes two sections, and described inner housing is arranged on inside shell body；Supporting tool is installed
In the end of described inner housing, it is used for supporting described inner housing；Connecting tooling is connected with described supporting tool.Described inner housing 1
Front view as shown in Figure 2.
After inner housing and shell body are to connecting, the profile of described inner housing, the profile of shell body, end face are all reserved with and add
Spare time measures, to ensure the precision of follow-up digital control processing.Wherein, the allowance of described inner housing diameter of bore is 1mm, shell body
Diameter, inner housing are 3～5mm with the allowance of shell body end face, it is therefore preferable to 4mm；Described inner housing endoporus two ends are same
Axle degree is 0.015mm, and shell body both ends of the surface are 0.02mm with the perpendicularity of inner housing endoporus.
Here, the inwall of described inner housing is provided with tank gusset (cooling water channel), enters with the air-flow to nozzle throat
Row cooling, its intensity of cooling increases along with the increase of cooling water channel.
Here, during because utilizing vacuum pressure diffusion welding machine that nozzle throat is welded, in order to avoid inner housing and shell
Body deforms because of High Temperature High Pressure, and supporting tool is arranged on the end of described inner housing.Seeing Fig. 1, described supporting tool includes: the
One supporting tool and the second supporting tool, described first supporting tool is arranged on one end of described inner housing；, described second supports
Frock is arranged on the other end of described inner housing.
In order to consolidate supporting tool, seeing Fig. 1, described connecting tooling includes: the first connecting tooling, the second connecting tooling,
3rd connecting tooling and the 4th connecting tooling；Wherein,
One end of described first connecting tooling is connected with the first junction of described first supporting tool, by described first
The other end of connecting tooling is connected with the first junction of described second supporting tool；
One end of described second connecting tooling is connected with the second junction of described first supporting tool, by described second
The other end of connecting tooling is connected with the second junction of described second supporting tool；
One end of described 3rd connecting tooling is connected with the 3rd junction of described first supporting tool, by the described 3rd
The other end of connecting tooling is connected with the 3rd junction of described second supporting tool；
One end of described 4th connecting tooling is connected with the 4th junction of described first supporting tool, by the described 4th
The other end of connecting tooling is connected with the 4th junction of described second supporting tool
When described inner housing dock with described shell body complete after, after auxiliary mould installs, utilize Vacuum Pressure
Described inner housing is welded by power diffusion welding machine with described shell body, and the welding temperature of described vacuum pressure diffusion welding machine is
830℃；The welding pressure of described vacuum pressure diffusion welding machine is 10.5MPa.After welding is complete, also need nozzle throat is protected
Temperature 25min.
After welding, described auxiliary mould is removed, described nozzle throat through ultrasound examination, all with air-tightness,
The weld seam that watertightness is relevant, weldquality is satisfied by I level weld seam requirement in GB/T12469.Cooling water channel carries out 5MPa hydraulic pressure examination
Test, ne-leakage and deformation in 5min；The inner chamber of inner housing 1 does the 7.5MPa water pressure test, ne-leakage and deformation in 5min.Through vacuum
Leak detection, described nozzle throat is pressurize 5min when pressure is less than 10Pa, and leak rate is less than 0.01Pa.L/S.
The present embodiment is under the support of nozzle throat auxiliary mould, when the mode using vacuum diffusion welding realizes nozzle throat
During the welding of inner and outer shell unlike material, it is to avoid inner housing and shell body deformation, it is to avoid the welding hidden danger of weld seam, extend spray
The service life of pipe venturi.
Embodiment five
During actual application, when nozzle throat auxiliary mould is welded by the method utilizing embodiment two to provide, specifically flow
Journey is as follows:
First, the inner housing of described nozzle throat is docked with described shell body.Described nozzle throat includes: shell body and
It is arranged on the inner housing within described shell body；Described auxiliary mould is applied on nozzle throat, specifically, and inner shell for convenience
Body docks with shell body assembling, and described inner housing includes two sections, and described inner housing is arranged on inside shell body；Supporting tool is installed
In the end of described inner housing, it is used for supporting described inner housing；Connecting tooling is connected with described supporting tool.Described inner housing 1
Front view as shown in Figure 2.
After inner housing and shell body are to connecting, the profile of described inner housing, the profile of shell body, end face are all reserved with and add
Spare time measures, to ensure the precision of follow-up digital control processing.Wherein, the allowance of described inner housing diameter of bore is 1mm, shell body
Diameter, inner housing are 3～5mm with the allowance of shell body end face, it is therefore preferable to 4mm；Described inner housing endoporus two ends are same
Axle degree is 0.015mm, and shell body both ends of the surface are 0.02mm with the perpendicularity of inner housing endoporus.
Here, the inwall of described inner housing is provided with tank gusset (cooling water channel), enters with the air-flow to nozzle throat
Row cooling, its intensity of cooling increases along with the increase of cooling water channel.
Here, during because utilizing vacuum pressure diffusion welding machine that nozzle throat is welded, in order to avoid inner housing and shell
Body deforms because of High Temperature High Pressure, and supporting tool is arranged on the end of described inner housing.Seeing Fig. 1, described supporting tool includes: the
One supporting tool and the second supporting tool, described first supporting tool is arranged on one end of described inner housing；, described second supports
Frock is arranged on the other end of described inner housing.
In order to consolidate supporting tool, seeing Fig. 1, described connecting tooling includes: the first connecting tooling, the second connecting tooling,
3rd connecting tooling and the 4th connecting tooling；Wherein,
One end of described first connecting tooling is connected with the first junction of described first supporting tool, by described first
The other end of connecting tooling is connected with the first junction of described second supporting tool；
One end of described second connecting tooling is connected with the second junction of described first supporting tool, by described second
The other end of connecting tooling is connected with the second junction of described second supporting tool；
One end of described 3rd connecting tooling is connected with the 3rd junction of described first supporting tool, by the described 3rd
The other end of connecting tooling is connected with the 3rd junction of described second supporting tool；
One end of described 4th connecting tooling is connected with the 4th junction of described first supporting tool, by the described 4th
The other end of connecting tooling is connected with the 4th junction of described second supporting tool
When described inner housing dock with described shell body complete after, after auxiliary mould installs, utilize Vacuum Pressure
Described inner housing is welded by power diffusion welding machine with described shell body, and the welding temperature of described vacuum pressure diffusion welding machine is
960℃；The welding pressure of described vacuum pressure diffusion welding machine is 12.0MPa.After welding is complete, also need nozzle throat is protected
Temperature 26min.
After welding, described auxiliary mould is removed, described nozzle throat through ultrasound examination, all with air-tightness,
The weld seam that watertightness is relevant, weldquality is satisfied by I level weld seam requirement in GB/T12469.Cooling water channel carries out 5MPa hydraulic pressure examination
Test, ne-leakage and deformation in 5min；The inner chamber of inner housing 1 does the 7.5MPa water pressure test, ne-leakage and deformation in 5min.Through vacuum
Leak detection, described nozzle throat is pressurize 5min when pressure is less than 10Pa, and leak rate is less than 0.01Pa.L/S.
The present embodiment is under the support of nozzle throat auxiliary mould, when the mode using vacuum diffusion welding realizes nozzle throat
During the welding of inner and outer shell unlike material, it is to avoid inner housing and shell body deformation, it is to avoid the welding hidden danger of weld seam, extend spray
The service life of pipe venturi.
Embodiment six
During actual application, when nozzle throat auxiliary mould is welded by the method utilizing embodiment two to provide, specifically flow
Journey is as follows:
First, the inner housing of described nozzle throat is docked with described shell body.Described nozzle throat includes: shell body and
It is arranged on the inner housing within described shell body；Described auxiliary mould is applied on nozzle throat, specifically, and inner shell for convenience
Body docks with shell body assembling, and described inner housing includes two sections, and described inner housing is arranged on inside shell body；Supporting tool is installed
In the end of described inner housing, it is used for supporting described inner housing；Connecting tooling is connected with described supporting tool.Described inner housing 1
Front view as shown in Figure 2.
After inner housing and shell body are to connecting, the profile of described inner housing, the profile of shell body, end face are all reserved with and add
Spare time measures, to ensure the precision of follow-up digital control processing.Wherein, the allowance of described inner housing diameter of bore is 1mm, shell body
Diameter, inner housing are 3～5mm with the allowance of shell body end face, it is therefore preferable to 4mm；Described inner housing endoporus two ends are same
Axle degree is 0.015mm, and shell body both ends of the surface are 0.02mm with the perpendicularity of inner housing endoporus.
Here, the inwall of described inner housing is provided with tank gusset (cooling water channel), enters with the air-flow to nozzle throat
Row cooling, its intensity of cooling increases along with the increase of cooling water channel.
Here, during because utilizing vacuum pressure diffusion welding machine that nozzle throat is welded, in order to avoid inner housing and shell
Body deforms because of High Temperature High Pressure, and supporting tool is arranged on the end of described inner housing.Seeing Fig. 1, described supporting tool includes: the
One supporting tool and the second supporting tool, described first supporting tool is arranged on one end of described inner housing；, described second supports
Frock is arranged on the other end of described inner housing.
In order to consolidate supporting tool, seeing Fig. 1, described connecting tooling includes: the first connecting tooling, the second connecting tooling,
3rd connecting tooling and the 4th connecting tooling；Wherein,
One end of described first connecting tooling is connected with the first junction of described first supporting tool, by described first
The other end of connecting tooling is connected with the first junction of described second supporting tool；
One end of described second connecting tooling is connected with the second junction of described first supporting tool, by described second
The other end of connecting tooling is connected with the second junction of described second supporting tool；
One end of described 3rd connecting tooling is connected with the 3rd junction of described first supporting tool, by the described 3rd
The other end of connecting tooling is connected with the 3rd junction of described second supporting tool；
One end of described 4th connecting tooling is connected with the 4th junction of described first supporting tool, by the described 4th
The other end of connecting tooling is connected with the 4th junction of described second supporting tool
When described inner housing dock with described shell body complete after, after auxiliary mould installs, utilize Vacuum Pressure
Described inner housing is welded by power diffusion welding machine with described shell body, and the welding temperature of described vacuum pressure diffusion welding machine is
940℃；The welding pressure of described vacuum pressure diffusion welding machine is 10.5MPa.After welding is complete, also need nozzle throat is protected
Temperature 21min.
After welding, described auxiliary mould is removed, described nozzle throat through ultrasound examination, all with air-tightness,
The weld seam that watertightness is relevant, weldquality is satisfied by I level weld seam requirement in GB/T12469.Cooling water channel carries out 5MPa hydraulic pressure examination
Test, ne-leakage and deformation in 5min；The inner chamber of inner housing 1 does the 7.5MPa water pressure test, ne-leakage and deformation in 5min.Through vacuum
Leak detection, described nozzle throat is pressurize 5min when pressure is less than 10Pa, and leak rate is less than 0.01Pa.L/S.
The present embodiment is under the support of nozzle throat auxiliary mould, when the mode using vacuum diffusion welding realizes nozzle throat
During the welding of inner and outer shell unlike material, it is to avoid inner housing and shell body deformation, it is to avoid the welding hidden danger of weld seam, extend spray
The service life of pipe venturi.
The above, only presently preferred embodiments of the present invention, be not intended to limit protection scope of the present invention, all
Any amendment, equivalent and the improvement etc. made within the spirit and principles in the present invention, should be included in the protection of the present invention
Within the scope of.
Claims (10)
1. a nozzle throat auxiliary mould, applies at nozzle throat, it is characterised in that described nozzle throat includes: shell body
And it is arranged on the inner housing within described shell body；
Described nozzle throat auxiliary mould includes:
Supporting tool, described supporting tool is arranged on the end of described inner housing, is used for supporting described inner housing；
Connecting tooling, described connecting tooling is connected with described supporting tool.
2. nozzle throat auxiliary mould as claimed in claim 1, it is characterised in that described inner housing utilizes with described shell body
Vacuum pressure diffusion welding machine welds.
3. nozzle throat auxiliary mould as claimed in claim 1, it is characterised in that described supporting tool includes:
First supporting tool, described first supporting tool is arranged on one end of described inner housing；
Second supporting tool, described second supporting tool is arranged on the other end of described inner housing.
4. nozzle throat auxiliary mould as claimed in claim 1, it is characterised in that described connecting tooling includes:
First connecting tooling, one end of described first connecting tooling is connected with the first junction of described first supporting tool, institute
First junction of the other end and described second supporting tool of stating the first connecting tooling is connected；
Second connecting tooling, one end of described second connecting tooling is connected with the second junction of described first supporting tool, institute
Second junction of the other end and described second supporting tool of stating the second connecting tooling is connected；
3rd connecting tooling, one end of described 3rd connecting tooling is connected with the 3rd junction of described first supporting tool, institute
3rd junction of the other end and described second supporting tool of stating the 3rd connecting tooling is connected；
4th connecting tooling, one end of described 4th connecting tooling is connected with the 4th junction of described first supporting tool, institute
4th junction of the other end and described second supporting tool of stating the 4th connecting tooling is connected.
5. a welding method for nozzle throat auxiliary mould, is applied on the nozzle throat auxiliary mould described in claim 1,
It is characterized in that, described nozzle throat includes: shell body and be arranged on the inner housing within described shell body；Described method bag
Include:
The inner housing of described nozzle throat is docked with described shell body；
Supporting tool is arranged on the end of described inner housing；
Described connecting tooling is connected with described supporting tool；
Utilize welding machine that described inner housing is welded with described shell body.
6. welding method as claimed in claim 5, it is characterised in that utilize welding machine that described inner housing is entered with described shell body
During row welding, the welding temperature of described welding machine is 800～970 DEG C；The welding pressure of described welding machine is 10～13.7MPa.
7. welding method as claimed in claim 5, it is characterised in that described supporting tool includes: the first supporting tool and the
Two supporting tools；Wherein, the end that supporting tool is arranged on described inner housing specifically includes:
Described first supporting tool is arranged on one end of described inner housing；
Described second supporting tool is arranged on the other end of described inner housing.
8. welding method as claimed in claim 5, it is characterised in that described connecting tooling includes: the first connecting tooling, second
Connecting tooling, the 3rd connecting tooling and the 4th connecting tooling；Wherein, described connecting tooling is connected specifically with described supporting tool
Including:
One end of described first connecting tooling is connected with the first junction of described first supporting tool, connects described first
The other end of frock is connected with the first junction of described second supporting tool；
One end of described second connecting tooling is connected with the second junction of described first supporting tool, connects described second
The other end of frock is connected with the second junction of described second supporting tool；
One end of described 3rd connecting tooling is connected with the 3rd junction of described first supporting tool, connects the described 3rd
The other end of frock is connected with the 3rd junction of described second supporting tool；
One end of described 4th connecting tooling is connected with the 4th junction of described first supporting tool, connects the described 4th
The other end of frock is connected with the 4th junction of described second supporting tool.
9. welding method as claimed in claim 4, it is characterised in that utilize welding machine that described inner housing is entered with described shell body
After row welding, described method also includes: described nozzle throat is incubated 20～30min.
10. welding method as claimed in claim 9, it is characterised in that described welding machine specifically includes vacuum pressure diffusion welding machine.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201610686229.4A CN106141412A (en) | 2016-08-17 | 2016-08-17 | A kind of nozzle throat auxiliary mould and welding method thereof |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610686229.4A CN106141412A (en) | 2016-08-17 | 2016-08-17 | A kind of nozzle throat auxiliary mould and welding method thereof |
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| CN106141412A true CN106141412A (en) | 2016-11-23 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201610686229.4A Pending CN106141412A (en) | 2016-08-17 | 2016-08-17 | A kind of nozzle throat auxiliary mould and welding method thereof |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109848498A (en) * | 2019-03-08 | 2019-06-07 | 任耀文 | A kind of complexity rectangular nozzle integral welding method |
| CN114211204A (en) * | 2021-12-21 | 2022-03-22 | 北京星航机电装备有限公司 | Gamma-shaped half-section end ring and superplastic forming method thereof |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3768256A (en) * | 1969-08-14 | 1973-10-30 | Messerschmitt Boelkow Blohm | Thrust gas generator having a combustion chamber and thrust nozzle regeneratively cooled by a liquid |
| CN101148000A (en) * | 2006-09-21 | 2008-03-26 | 航天材料及工艺研究所 | High temperature alloy complex groove structure panel and flange liquid phase diffusion connecting method |
| CN101633081A (en) * | 2008-12-29 | 2010-01-27 | 北京智创联合科技有限公司 | Manufacturing of composite sandwich nozzle by dynamic pressurizing transient liquid phase diffusion welding |
| CN101704160A (en) * | 2009-12-03 | 2010-05-12 | 西安交通大学 | Heterogeneous metal connecting method for tungsten, copper and alloy thereof |
| CN103537789A (en) * | 2013-11-05 | 2014-01-29 | 什邡市明日宇航工业股份有限公司 | Discharge plasma diffusion welding manufacture method for Laval nozzles |
| CN203696227U (en) * | 2014-01-20 | 2014-07-09 | 常德翔宇设备制造有限公司 | Tool for special-shaped spray pipe diffusion welding with bidirectional bulging |
| CN206029008U (en) * | 2016-08-17 | 2017-03-22 | 湖北三江航天红阳机电有限公司 | Spray tube throat auxiliary fixtures |
-
2016
- 2016-08-17 CN CN201610686229.4A patent/CN106141412A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3768256A (en) * | 1969-08-14 | 1973-10-30 | Messerschmitt Boelkow Blohm | Thrust gas generator having a combustion chamber and thrust nozzle regeneratively cooled by a liquid |
| CN101148000A (en) * | 2006-09-21 | 2008-03-26 | 航天材料及工艺研究所 | High temperature alloy complex groove structure panel and flange liquid phase diffusion connecting method |
| CN101633081A (en) * | 2008-12-29 | 2010-01-27 | 北京智创联合科技有限公司 | Manufacturing of composite sandwich nozzle by dynamic pressurizing transient liquid phase diffusion welding |
| CN101704160A (en) * | 2009-12-03 | 2010-05-12 | 西安交通大学 | Heterogeneous metal connecting method for tungsten, copper and alloy thereof |
| CN103537789A (en) * | 2013-11-05 | 2014-01-29 | 什邡市明日宇航工业股份有限公司 | Discharge plasma diffusion welding manufacture method for Laval nozzles |
| CN203696227U (en) * | 2014-01-20 | 2014-07-09 | 常德翔宇设备制造有限公司 | Tool for special-shaped spray pipe diffusion welding with bidirectional bulging |
| CN206029008U (en) * | 2016-08-17 | 2017-03-22 | 湖北三江航天红阳机电有限公司 | Spray tube throat auxiliary fixtures |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109848498A (en) * | 2019-03-08 | 2019-06-07 | 任耀文 | A kind of complexity rectangular nozzle integral welding method |
| CN114211204A (en) * | 2021-12-21 | 2022-03-22 | 北京星航机电装备有限公司 | Gamma-shaped half-section end ring and superplastic forming method thereof |
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Application publication date: 20161123 |