CN109630777A - A kind of threeway fuel feeding pipe fitting and its manufacturing process - Google Patents
A kind of threeway fuel feeding pipe fitting and its manufacturing process Download PDFInfo
- Publication number
- CN109630777A CN109630777A CN201811449302.1A CN201811449302A CN109630777A CN 109630777 A CN109630777 A CN 109630777A CN 201811449302 A CN201811449302 A CN 201811449302A CN 109630777 A CN109630777 A CN 109630777A
- Authority
- CN
- China
- Prior art keywords
- threeway
- pipe fitting
- feeding pipe
- fuel feeding
- flange
- 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.)
- Pending
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
- B22F10/00—Additive manufacturing of workpieces or articles from metallic powder
- B22F10/20—Direct sintering or melting
- B22F10/28—Powder bed fusion, e.g. selective laser melting [SLM] or electron beam melting [EBM]
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L41/00—Branching pipes; Joining pipes to walls
- F16L41/02—Branch units, e.g. made in one piece, welded, riveted
- F16L41/021—T- or cross-pieces
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
- B22F10/00—Additive manufacturing of workpieces or articles from metallic powder
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B33—ADDITIVE MANUFACTURING TECHNOLOGY
- B33Y—ADDITIVE MANUFACTURING, i.e. MANUFACTURING OF THREE-DIMENSIONAL [3-D] OBJECTS BY ADDITIVE DEPOSITION, ADDITIVE AGGLOMERATION OR ADDITIVE LAYERING, e.g. BY 3-D PRINTING, STEREOLITHOGRAPHY OR SELECTIVE LASER SINTERING
- B33Y80/00—Products made by additive manufacturing
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L23/00—Flanged joints
- F16L23/02—Flanged joints the flanges being connected by members tensioned axially
- F16L23/032—Flanged joints the flanges being connected by members tensioned axially characterised by the shape or composition of the flanges
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L23/00—Flanged joints
- F16L23/16—Flanged joints characterised by the sealing means
- F16L23/18—Flanged joints characterised by the sealing means the sealing means being rings
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
- B22F10/00—Additive manufacturing of workpieces or articles from metallic powder
- B22F10/40—Structures for supporting workpieces or articles during manufacture and removed afterwards
- B22F10/47—Structures for supporting workpieces or articles during manufacture and removed afterwards characterised by structural features
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
- B22F10/00—Additive manufacturing of workpieces or articles from metallic powder
- B22F10/60—Treatment of workpieces or articles after build-up
- B22F10/66—Treatment of workpieces or articles after build-up by mechanical means
-
- 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
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P10/00—Technologies related to metal processing
- Y02P10/25—Process efficiency
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Manufacturing & Machinery (AREA)
- Materials Engineering (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Plasma & Fusion (AREA)
- Fuel-Injection Apparatus (AREA)
Abstract
The application belongs to joint structure design field, in particular to a kind of threeway fuel feeding pipe fitting and its manufacturing process.The threeway fuel feeding pipe fitting includes: threeway tube body (5), three flanges and sensor interface (4).The flange includes upper flange (1), lower flange (2) and intermediate large flange (3), and the upper flange (1), the lower flange (2) and the intermediate large flange (3) are separately positioned on corresponding position on the threeway tube body (5)；The sensor interface (4) is arranged on the threeway tube body (5).The threeway fuel feeding pipe fitting of the application has reasonable space structure layout, is conducive to mitigate construction weight, shortens manufacture assembly period.
Description
Technical field
The application belongs to joint structure design field, in particular to a kind of threeway fuel feeding pipe fitting and its manufacturing process.
Background technique
Threeway fuel feeding pipe fitting is very common in the oil circuit of aircraft, for oil mass distribution, changes fuel delivery or oily stream
To being the important component in aircraft oil feed line.General tee pipe coupling structure type GJB 859.26-1990 extremely
There is detailed regulation in GJB 859.18-1990.Rather than target threeway fuel feeding pipe fitting is less in oil circuit, but act on very
Greatly, often important Parts are interlocked by solving line branching, space limitation and solve connection in the form of different finished product distinct interfaces
Problem.
Threeway fuel feeding pipe fitting nonstandard at present is produced using forging type, is limited by technique, cannot give full play to threeway
The special-shaped advantage of fuel feed pump, the tee tube weight of manufacture is big, configuration is simple, is unfavorable for aircraft weight control.
Thus, it is desirable to have a kind of technical solution overcomes or at least mitigates at least one drawbacks described above of the prior art.
Summary of the invention
There is provided a kind of threeway fuel feeding pipe fitting and its manufacturing process for the purpose of the application, to solve prior art presence
At least one problem.
The technical solution of the application is:
A kind of threeway fuel feeding pipe fitting, comprising:
Threeway tube body；
Flange, including upper flange, lower flange and intermediate large flange, the upper flange, the lower flange with
And the intermediate large flange is separately positioned on corresponding position on the threeway tube body；
Sensor interface, the sensor interface are arranged on the threeway tube body.
Optionally, the intermediate large flange is connect by transition pipe with sprue oil feed line, the transition pipe packet
Include straightway pipeline and conical camber section pipeline.
Optionally, the company of the threeway tube body and the upper flange, the lower flange and the intermediate large flange
The place of connecing is provided with R3~R5mm rounded corner.
Optionally, the company of the threeway tube body and the upper flange, the lower flange and the intermediate large flange
The place of connecing offers seal groove, and the seal groove depth is 2~3mm, and the seal groove is used for mounting O-shaped sealing ring.
Optionally, the upper flange, the lower flange and the intermediate large flange with a thickness of 3~5mm.
Optionally, the junction wall thickness of the threeway tube body and the sensor interface is 2~4mm.
Optionally, the wall thickness of the threeway tube body is 1~2mm.
A kind of manufacturing process of threeway fuel feeding pipe fitting is based on threeway fuel feeding pipe fitting as described above, comprising:
Step 1 melts forming technique based on selective laser, checks the three-dimensional digital-to-analogue of threeway fuel feeding pipe fitting；
Technique pre-treatment is formed in step 2；
Step 3 carries out selective laser fusing figuration manufacture.
Optionally, technique pre-treatment is formed described in step 2 includes:
Step 2.1 determines forming mode；
Step 2.2 carries out process allowance processing；
Step 2.3 is supported processing.
Optionally, before the progress selective laser fusing figuration manufacture described in step 3, process parameter optimizing is carried out first.
At least there are following advantageous effects in invention:
The threeway fuel feeding pipe fitting of the application has reasonable space structure layout, is conducive to mitigate construction weight, shortens system
Make assembly period.
Detailed description of the invention
Fig. 1 is the threeway fuel feeding pipe fitting schematic diagram of the embodiment of the application；
Fig. 2 is the threeway fuel feeding pipe fitting partial enlarged view of the embodiment of the application；
Fig. 3 is the manufacturing process flow chart of the threeway fuel feeding pipe fitting of the embodiment of the application.
Wherein:
1- upper flange；2- lower flange；Large flange among 3-；4- sensor interface；5- threeway tube body.
Specific embodiment
To keep the purposes, technical schemes and advantages of the application implementation clearer, below in conjunction in the embodiment of the present application
Attached drawing, technical solutions in the embodiments of the present application is further described in more detail.In the accompanying drawings, identical from beginning to end or class
As label indicate same or similar element or element with the same or similar functions.Described embodiment is the application
A part of the embodiment, instead of all the embodiments.The embodiments described below with reference to the accompanying drawings are exemplary, it is intended to use
In explanation the application, and it should not be understood as the limitation to the application.Based on the embodiment in the application, ordinary skill people
Member's every other embodiment obtained without creative efforts, shall fall in the protection scope of this application.Under
Face is described in detail embodiments herein in conjunction with attached drawing.
In the description of the present application, it is to be understood that term " center ", " longitudinal direction ", " transverse direction ", "front", "rear",
The orientation or positional relationship of the instructions such as "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outside" is based on attached drawing institute
The orientation or positional relationship shown is merely for convenience of description the application and simplifies description, rather than the dress of indication or suggestion meaning
It sets or element must have a particular orientation, be constructed and operated in a specific orientation, therefore should not be understood as protecting the application
The limitation of range.
1 to Fig. 3 the application is described in further details with reference to the accompanying drawing.
This application provides a kind of threeway fuel feeding pipe fittings, comprising: 5, three flanges of threeway tube body and sensor connect
Mouth 4.
Specifically, flange includes upper flange 1, lower flange 2 and intermediate large flange 3, upper flange 1, lower flange 2
And intermediate large flange 3 is separately positioned on corresponding position on threeway tube body 5；Sensor interface 4 is arranged on threeway tube body 5.
In the embodiment of the application, for connecting oil feed line, realization oil circuit shunts three flanges, broad in the middle
Flange 3 is connect by transition pipe with sprue oil feed line, and transition pipe includes straightway pipeline and conical camber section pipe
Road.
It in the present embodiment, is limited by attachment force, threeway tube body 5 and upper flange 1, lower flange 2 and method broad in the middle
The junction of orchid 3 is that stress is avoided to concentrate, and is provided with R3~R5mm rounded corner.Advantageously, threeway tube body 5 and upper flange
1, the junction of lower flange 2 and intermediate large flange 3 offers seal groove, and seal groove depth is 2~3mm, and seal groove is used
In mounting O-shaped sealing ring.
In the threeway fuel feeding pipe fitting of the application, upper flange 1, lower flange 2 and intermediate large flange 3 with a thickness of 3
~5mm.
In the threeway fuel feeding pipe fitting of the application, the junction wall thickness of threeway tube body 5 and sensor interface 4 is 2~4mm.
Sensor interface 4 can connect different sensors, such as temperature, pressure, velocity sensor, and interface form and size can be according to biographies
The form and size of sensor determines.
In the threeway fuel feeding pipe fitting of the application, the wall thickness of threeway tube body 5 is 1~2mm.In the embodiment party of the application
In formula, tee tube body thickness is 1mm, and light-weight, structure type is optimal.
The threeway fuel feeding pipe fitting of the application, optimizes the wall thickness of threeway fuel feeding pipe fitting, with it is broad in the middle
The pipeline intersection configuration of flange 3 is complicated, especially has larger configuration to be mutated at intersecting lens, and stress is concentrated, to avoid exceeding material
Material uses allowable stress value, has carried out local thickening to wall thickness at this, as shown in Figure 2.Thickening position is that two sides are symmetrical, in
Between the other side of large flange 3 also thickeied, for thicken position thickness from 2mm to 1mm gradually transition, transition is uniform, stress water
It is flat to be effectively controlled.
Based on above-mentioned threeway fuel feeding pipe fitting, present invention also provides a kind of manufacturing process of threeway fuel feeding pipe fitting, packets
It includes:
Step 1 melts forming technique based on selective laser, checks the three-dimensional digital-to-analogue of threeway fuel feeding pipe fitting；
Technique pre-treatment is formed in step 2；
Step 3 carries out selective laser fusing figuration manufacture.
Further, technique pre-treatment is formed in step 2 to include: step 2.1, determine forming mode；Step 2.2, into
The processing of row process allowance；Step 2.3 is supported processing.
Before step 3 carries out selective laser fusing figuration manufacture, process parameter optimizing is carried out first.
Specifically, in an embodiment of the manufacturing process of the threeway fuel feeding pipe fitting of the application, in step 2.1 really
Figuration mode includes: using the sprue direction of threeway fuel feeding pipe fitting as Z-direction, after which can guarantee sprue forming
Deform that small, surface quality is good, in addition the runner direction in direction and Z-direction is in 90 ° or acute angle.Process allowance is carried out in step 2.2
Processing include: requirement cooperation, sealing and roughness requirements in need should all stay machining allowance less than or equal to the surface of Ra12.5,
Allowance >=the 0.5mm for needing to be machined can stay≤0.15mm with what pincers worker polishing, sand paper were polished.It is carried out in step 2.3
Support processing includes: should all have support with the face within horizontal sextant angle angle >=40 °, and bottom support is gone back in addition to normal support
There should be the Contour offset solid support of a circle > 1mm thickness with feature bottom outer profile.
Threeway fuel feeding provided by the present application pipe fitting side forming process is a kind of selective laser fusing manufacturing process, by this
The threeway fuel feeding pipe fitting of method manufacture, relative density is high, intensity is good, at the position that needs are machined without shrinkage porosite, stomata etc.
Defect, finished surface can be used for sealing.It avoids when casting is sealed using sealing ring since the defect of shrinkage porosite and stomata is more
It cannot achieve sealing, and must be by the way of being welded with other not cast aluminum alloy parts.In contrast, the present processes
Technical process is simple, form stable, high yield rate.
The threeway fuel feeding pipe fitting of the application can be realized once-forming, and wall thickness transition is uniform, structure type is reasonable.It is based on
The threeway fuel feeding pipe fitting side forming process of forming technique is melted in selective laser, makes this kind of nonstandard, a small amount of, special-shaped, complicated threeway
Fuel feeding pipe fitting can be manufactured quickly, realize optimal, the light-weight design object of structure.
The application also realizes structure type local optimum, reaches rationally distributed, function other than realizing and shunting linkage function
Complete and light-weight purpose.Structure design use is once-forming, and following process is few, and compared with traditional structure, use is above-mentioned
Advantage possessed by structural configuration is as follows: reasonable space structure layout；Mitigate construction weight, opposite traditional structure can loss of weight
40% or more；The design of threeway tube body wall thickness is reasonable；The design method is combined with manufacturing process, and manufacture is short assembly period.
The above, the only specific embodiment of the application, but the protection scope of the application is not limited thereto, it is any
Within the technical scope of the present application, any changes or substitutions that can be easily thought of by those familiar with the art, all answers
Cover within the scope of protection of this application.Therefore, the protection scope of the application should be with the scope of protection of the claims
It is quasi-.
Claims (10)
1. a kind of threeway fuel feeding pipe fitting characterized by comprising
Threeway tube body (5)；
Flange, including upper flange (1), lower flange (2) and intermediate large flange (3), the upper flange (1), it is described under
Portion's flange (2) and the intermediate large flange (3) are separately positioned on corresponding position on the threeway tube body (5)；
Sensor interface (4), the sensor interface (4) are arranged on the threeway tube body (5).
2. threeway fuel feeding pipe fitting according to claim 1, which is characterized in that the intermediate large flange (3) passes through transition
Pipeline is connect with sprue oil feed line, and the transition pipe includes straightway pipeline and conical camber section pipeline.
3. threeway fuel feeding pipe fitting according to claim 1, which is characterized in that the threeway tube body (5) and the top
The junction of flange (1), the lower flange (2) and the intermediate large flange (3) is provided with R3~R5mm rounded corner.
4. threeway fuel feeding pipe fitting according to claim 1, which is characterized in that the threeway tube body (5) and the top
The junction of flange (1), the lower flange (2) and the intermediate large flange (3) offers seal groove, the seal groove
Depth is 2~3mm, and the seal groove is used for mounting O-shaped sealing ring.
5. threeway fuel feeding pipe fitting according to claim 1, which is characterized in that the upper flange (1), the lower part method
Blue (2) and the intermediate large flange (3) with a thickness of 3~5mm.
6. threeway fuel feeding pipe fitting according to claim 1, which is characterized in that the threeway tube body (5) and the sensing
The junction wall thickness of device interface (4) is 2~4mm.
7. threeway fuel feeding pipe fitting according to claim 1, which is characterized in that the wall thickness of the threeway tube body (5) be 1~
2mm。
8. a kind of manufacturing process of threeway fuel feeding pipe fitting, based on threeway described in claim 1 to claim 8 any one
Fuel feeding pipe fitting characterized by comprising
Step 1 melts forming technique based on selective laser, checks the three-dimensional digital-to-analogue of threeway fuel feeding pipe fitting；
Technique pre-treatment is formed in step 2；
Step 3 carries out selective laser fusing figuration manufacture.
9. the manufacturing process of threeway fuel feeding pipe fitting according to claim 8, which is characterized in that carried out described in step 2
Forming technology pre-treatment includes:
Step 2.1 determines forming mode；
Step 2.2 carries out process allowance processing；
Step 2.3 is supported processing.
10. the manufacturing process of threeway fuel feeding pipe fitting according to claim 9, which is characterized in that carried out described in step 3
Before figuration manufacture is melted in selective laser, process parameter optimizing is carried out first.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811449302.1A CN109630777A (en) | 2018-11-30 | 2018-11-30 | A kind of threeway fuel feeding pipe fitting and its manufacturing process |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811449302.1A CN109630777A (en) | 2018-11-30 | 2018-11-30 | A kind of threeway fuel feeding pipe fitting and its manufacturing process |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109630777A true CN109630777A (en) | 2019-04-16 |
Family
ID=66070090
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811449302.1A Pending CN109630777A (en) | 2018-11-30 | 2018-11-30 | A kind of threeway fuel feeding pipe fitting and its manufacturing process |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109630777A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112091212A (en) * | 2020-09-09 | 2020-12-18 | 中国航发沈阳黎明航空发动机有限责任公司 | Multi-connection multi-way oil supply pipe joint group and selective laser melting forming method thereof |
| CN112935276A (en) * | 2021-01-23 | 2021-06-11 | 中国石油天然气集团有限公司 | Electric arc additive manufacturing method of thick-wall large-diameter three-way pipe fitting for oil and gas transmission |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1231045A2 (en) * | 2001-02-08 | 2002-08-14 | Mitsui Chemicals, Inc. | Electrofusion joint |
| CN201162908Y (en) * | 2008-01-18 | 2008-12-10 | 江阴市东发管件制造有限公司 | Triplet joint with temperature-sensing and pressure-measuring port |
| CN201302022Y (en) * | 2008-11-14 | 2009-09-02 | 倪进树 | Conservation-oriented high pressure pipeline |
| CN102052537B (en) * | 2010-12-20 | 2012-05-09 | 福建海峡科化股份有限公司 | Steam tracing tee-joint sleeve |
| CN203892628U (en) * | 2014-06-05 | 2014-10-22 | 李龙 | Three-way intelligent compensating controller of fluid system |
| CN106493365A (en) * | 2016-10-28 | 2017-03-15 | 南通金源智能技术有限公司 | The method that selective laser fusing forming technique prepares 316 rustless steels complexity thin wall pipelines |
| CN208138668U (en) * | 2018-04-04 | 2018-11-23 | 上海一郎合金材料有限公司 | A kind of novel nickel alloy tee pipe fitting |
-
2018
- 2018-11-30 CN CN201811449302.1A patent/CN109630777A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1231045A2 (en) * | 2001-02-08 | 2002-08-14 | Mitsui Chemicals, Inc. | Electrofusion joint |
| CN201162908Y (en) * | 2008-01-18 | 2008-12-10 | 江阴市东发管件制造有限公司 | Triplet joint with temperature-sensing and pressure-measuring port |
| CN201302022Y (en) * | 2008-11-14 | 2009-09-02 | 倪进树 | Conservation-oriented high pressure pipeline |
| CN102052537B (en) * | 2010-12-20 | 2012-05-09 | 福建海峡科化股份有限公司 | Steam tracing tee-joint sleeve |
| CN203892628U (en) * | 2014-06-05 | 2014-10-22 | 李龙 | Three-way intelligent compensating controller of fluid system |
| CN106493365A (en) * | 2016-10-28 | 2017-03-15 | 南通金源智能技术有限公司 | The method that selective laser fusing forming technique prepares 316 rustless steels complexity thin wall pipelines |
| CN208138668U (en) * | 2018-04-04 | 2018-11-23 | 上海一郎合金材料有限公司 | A kind of novel nickel alloy tee pipe fitting |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112091212A (en) * | 2020-09-09 | 2020-12-18 | 中国航发沈阳黎明航空发动机有限责任公司 | Multi-connection multi-way oil supply pipe joint group and selective laser melting forming method thereof |
| CN112935276A (en) * | 2021-01-23 | 2021-06-11 | 中国石油天然气集团有限公司 | Electric arc additive manufacturing method of thick-wall large-diameter three-way pipe fitting for oil and gas transmission |
| CN112935276B (en) * | 2021-01-23 | 2022-10-04 | 中国石油天然气集团有限公司 | Electric arc additive manufacturing method of thick-wall large-diameter three-way pipe fitting for oil and gas transmission |
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| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20190416 |
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| RJ01 | Rejection of invention patent application after publication |