CN110142408A - A kind of selective laser fusing manufacturing process of nozzle body - Google Patents

A kind of selective laser fusing manufacturing process of nozzle body Download PDF

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Publication number
CN110142408A
CN110142408A CN201910551421.6A CN201910551421A CN110142408A CN 110142408 A CN110142408 A CN 110142408A CN 201910551421 A CN201910551421 A CN 201910551421A CN 110142408 A CN110142408 A CN 110142408A
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CN
China
Prior art keywords
nozzle body
hole
coupon
selective laser
manufacturing process
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Granted
Application number
CN201910551421.6A
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Chinese (zh)
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CN110142408B (en
Inventor
吴晓锋
陈娟娟
谢国印
李金声
周亚娜
刘志军
王颖
种磊
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AECC Aviation Power Co Ltd
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AECC Aviation Power Co Ltd
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Priority to CN201910551421.6A priority Critical patent/CN110142408B/en
Publication of CN110142408A publication Critical patent/CN110142408A/en
Application granted granted Critical
Publication of CN110142408B publication Critical patent/CN110142408B/en
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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
    • B22F12/00—Apparatus or devices specially adapted for additive manufacturing; Auxiliary means for additive manufacturing; Combinations of additive manufacturing apparatus or devices with other processing apparatus or devices
    • B22F12/38—Housings, e.g. machine housings
    • 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
    • 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]
    • 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
    • B22F12/00—Apparatus or devices specially adapted for additive manufacturing; Auxiliary means for additive manufacturing; Combinations of additive manufacturing apparatus or devices with other processing apparatus or devices
    • B22F12/50—Means for feeding of material, e.g. heads
    • B22F12/53—Nozzles
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
    • B22F3/00—Manufacture of workpieces or articles from metallic powder characterised by the manner of compacting or sintering; Apparatus specially adapted therefor ; Presses and furnaces
    • B22F3/24—After-treatment of workpieces or articles
    • 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
    • B22F5/00—Manufacture of workpieces or articles from metallic powder characterised by the special shape of the product
    • B22F5/10—Manufacture of workpieces or articles from metallic powder characterised by the special shape of the product of articles with cavities or holes, not otherwise provided for in the preceding subgroups
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B33—ADDITIVE MANUFACTURING TECHNOLOGY
    • B33Y—ADDITIVE MANUFACTURING, i.e. MANUFACTURING OF THREE-DIMENSIONAL [3-D] OBJECTS BY ADDITIVE DEPOSITION, ADDITIVE AGGLOMERATION OR ADDITIVE LAYERING, e.g. BY 3-D PRINTING, STEREOLITHOGRAPHY OR SELECTIVE LASER SINTERING
    • B33Y10/00—Processes of additive manufacturing
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • 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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
    • B22F3/00—Manufacture of workpieces or articles from metallic powder characterised by the manner of compacting or sintering; Apparatus specially adapted therefor ; Presses and furnaces
    • B22F3/24—After-treatment of workpieces or articles
    • B22F2003/247—Removing material: carving, cleaning, grinding, hobbing, honing, lapping, polishing, milling, shaving, skiving, turning the surface
    • 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
    • B22F2998/00—Supplementary information concerning processes or compositions relating to powder metallurgy
    • B22F2998/10—Processes characterised by the sequence of their steps
    • 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

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  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Chemical & Material Sciences (AREA)
  • Materials Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Plasma & Fusion (AREA)
  • Fuel-Injection Apparatus (AREA)
  • Powder Metallurgy (AREA)

Abstract

The invention discloses a kind of selective lasers of nozzle body to melt manufacturing process, includes the following steps；Step 1, is formed separately delivery nozzle shell and coupon using increasing material manufacturing on substrate, and the heat-insulated cavity region of nozzle body is provided with through-hole, number of openings at least two, and coupon is identical as through-hole diameter and length；Step 2 clears up the metal powder of substrate, nozzle body surface and coupon, passes through the metal powder that through-hole is cleared up in heat-insulation chamber；Coupon is inserted into through-hole, is sealed by step 3.Solve the problems, such as that metal powder material can not be removed in nozzle body closing heat-insulation chamber.

Description

A kind of selective laser fusing manufacturing process of nozzle body
Technical field
The invention belongs to material increasing fields, are related to a kind of selective laser fusing manufacturing process of nozzle body.
Background technique
Important component of the fuel nozzle shell as aero-engine, processing work usually traditional by casting/forging/punching press etc. Skill shapes multiple parts, is combined into nozzle body component using assembling/welding method, the heat-insulated cavity configuration of component is by zero What the assembling gap of part was realized, and the problems such as be easy to produce deformation in the welding process.
Increases material manufacturing technology is the novel rapid prototyping technology of the multi-crossed disciplines such as computer, material, high energy beam, is suitable for Have many characteristics, such as the quick research and development of labyrinth, inner-cavity structure new product, with the fast development and technology of increases material manufacturing technology The design freedom of advantage, aero-engine fuel nozzle shell increases, and realizes the integrated design of component and increase material Manufacture forming, saves a large amount of manufacturing cycle and cost.In addition, also there is completely enclosed knot in the heat-insulation chamber of nozzle body Structure, and structure becomes increasingly complex, in selective laser, fusing increasing material manufacturing manufacturing process realizes completely enclosed formula heat-insulation chamber forming Meanwhile the metal powder cleaning that is also faced in part heat-insulation chamber it is difficult the problems such as need to solve.
Summary of the invention
It is an object of the invention to overcome the above-mentioned prior art, a kind of selective laser fusing of nozzle body is provided Manufacturing process solves the problems, such as that metal powder material can not be removed in nozzle body closing heat-insulation chamber.
In order to achieve the above objectives, the present invention is achieved by the following scheme:
A kind of selective laser fusing manufacturing process of nozzle body, includes the following steps；
Step 1 is formed on substrate using selective laser fusing and is formed separately delivery nozzle shell and coupon, nozzle body Including sequentially connected nozzle head, bar portion and mounting plate, mounting plate bottom be respectively equipped with working connection oil inlet interface and auxiliary oil circuit into Oily interface, working connection oil inlet interface and auxiliary oil circuit oil inlet interface are mutually perpendicular to, and are separately connected two independent oil ducts, two independences Oil duct is arranged inside bar portion, and jet hole is provided in nozzle head, and two independent oil ducts converge to jet hole, setting inside bar portion There is the heat-insulation chamber of completely enclosed annular, heat-insulation chamber wraps up two independent oil ducts；
The heat-insulated cavity region of nozzle body is provided with through-hole, number of openings at least two, and the diameter and length of coupon are big In the diameter and length of through-hole；
Step 2 clears up the metal powder of substrate, nozzle body surface and coupon, passes through the gold that through-hole is cleared up in heat-insulation chamber Belong to powder；
Coupon is inserted into through-hole, is sealed by step 3.
Preferably, through-hole diameter 2-3mm.
Preferably, in step 2, using the gold in compressed air cleaning substrate, nozzle body surface, coupon and heat-insulation chamber Belong to powder.
Further, when clearing up the metal powder in heat-insulation chamber, two through-holes are only stayed, one of them is another as air inlet It is a to be used as venthole, all through-holes are successively recycled.
Preferably, through-hole uses taper hole, and big opening end is towards outside, major diameter 2-3mm, and taper is 3-5 °, coupon and through-hole Taper is identical.
Further, coupon from both ends to center from diameter be gradually reduced, diameter largest portion be greater than taper hole big opening end diameter, Diameter least part is less than or equal to taper hole osculum end diameter；It is before coupon is inserted into through-hole, coupon is therefrom separated.
Preferably, in step 1, nozzle body two sides are respectively set there are two through-hole, and two through-holes of the same side are distributed in Heat-insulated cavity region upper and lower ends, the through-hole of two sides shift to install.
Preferably, it after the completion of step 2, was shaped using vacuum heat-treating method removal substrate and nozzle body and coupon Stress in journey.
Further, after going de-stress, using wire cutting method cutting substrate and nozzle body and coupon.
Preferably, in step 3, coupon and through-hole are subjected to welded seal.
Compared with prior art, the invention has the following advantages:
The present invention is by increasing material manufacturing, can be by through-hole by the metal powder in heat-insulation chamber there are through-hole on shell End is cleared up, and after the completion of cleaning, coupon is inserted into through-hole, is sealed, and solves gold in nozzle body closing heat-insulation chamber Belong to the problem of powder can not be removed.
Further, it is used as air inlet by through-hole one, as venthole, other are closed for another, can pass through pressure Contracting gas effectively blows out metal powder.
Further, through-hole uses taper hole, and big opening end can be such that gas outlet air pressure increases, increase cleaning efficiency towards outside.
Further, manufactured coupon mid diameter is small, after therefrom separated, can satisfy the sealing of two taper holes, reduces The number of components of increasing material manufacturing.
Detailed description of the invention
Fig. 1 is nozzle body structural schematic diagram of the invention；
Fig. 2 is nozzle body structural vertical directional profile figure of the invention；
Fig. 3 is nozzle body structure level directional profile figure of the invention；
Fig. 4 is coupon structural schematic diagram of the invention.
Wherein: 1- heat-insulation chamber；2- nozzle body；3- through-hole；4- coupon.
Specific embodiment
The invention will be described in further detail with reference to the accompanying drawing:
Method of the present invention the following steps are included:
Step 1 is formed with the Aviation Fuel nozzle body of closing inner chamber structure using selective laser fusing increasing material manufacturing 2, as shown in Figs. 1-2, the forming direction vertical display of 2 part of nozzle body.
Nozzle body 2 include sequentially connected nozzle head, bar portion and mounting plate, mounting plate bottom be respectively equipped with working connection into Oily interface and auxiliary oil circuit oil inlet interface, working connection oil inlet interface and auxiliary oil circuit oil inlet interface are mutually perpendicular to, and are separately connected two Independent oil duct, two independent oil ducts are arranged inside bar portion, jet hole are provided in nozzle head, two independent oil ducts converge to spray Mouthpiece, bar portion are internally provided with the heat-insulation chamber 1 of completely enclosed annular, and heat-insulation chamber 1 wraps up two independent oil ducts.
The prefabricated flour opening on 2 process modeling of nozzle body, flour opening are placed in 2 planar structure of nozzle body, out powder Hole is through-hole 3, places two flour openings respectively, and the flour opening on same plane is in the diagonal of 1 region upper and lower ends of heat-insulation chamber The through-hole 3 of line position, two side planes shifts to install, as shown in Figure 1.
Flour opening is cone hole, and big opening end aperture size is φ 2-3mm, and taper is 3-5 °, coupon 4 and flour opening taper phase Together, as shown in Figure 3.
During shaping nozzle shell 2, it is more than the cone coupon 4 of technique flour opening quantity, cone examination with batch design 4 structure of stick as shown in figure 4,4 taper of coupon is consistent with technique flour opening taper, coupon 4 from both ends to center from diameter by Decrescence small, diameter largest portion is greater than taper hole big opening end diameter, and diameter least part is not more than taper hole osculum end diameter；A piece examination Stick 4 may be partitioned into two cone coupons 4, before coupon 4 is inserted into through-hole 3, coupon 4 is therefrom separated.
Reasonable placement fuel nozzle shell 2 and cone coupon 4 on the substrate used in existing increasing material manufacturing equipment.
Step 2, increasing material manufacturing forming after, using the tools such as compressed air, mallet cleaning substrate, parts surface and every Metal powder in hot chamber 1 closes two flour openings of different direction during clearing up metal powder in heat-insulation chamber 1, protects The unimpeded of other two flour opening is held, as air inlet, another is passed through compressed gas as venthole, to air inlet for one of them Body, gas carry metal powder and spray from venthole, and all through-holes 3 are successively carried out circulate operation, heat-insulated until thoroughly removing Metal powder in chamber 1 gives 2 taking x-rays of nozzle body, observes whether contain metal powder inside heat-insulation chamber 1 by X-ray End, to judge whether the metal powder in heat-insulation chamber 1 is cleaned out.
Using the stress in vacuum heat-treating method removal substrate, part-forming process.
Using wire cutting method cutting substrate and nozzle body 2 and coupon 4, substrate and nozzle body 2 and coupon 4 are divided From cutting coupon 4 is two cone coupons 4.
2 part of sanding and polishing nozzle body, 4 end face of cone coupon, 4 end face of cone coupon and 2 flour opening hole of nozzle body Diameter is consistent.
Washer jet shell 2, cone coupon 4.
Step 3 is sealed technique flour opening with cone coupon 4 using welding method, and sanding and polishing welding surface, is completed 2 increasing material manufacturing of nozzle body forming.
The above content is merely illustrative of the invention's technical idea, and this does not limit the scope of protection of the present invention, all to press According to technical idea proposed by the present invention, any changes made on the basis of the technical scheme each falls within claims of the present invention Protection scope within.

Claims (10)

1. manufacturing process is melted in a kind of selective laser of nozzle body, which is characterized in that include the following steps；
Step 1 is formed on substrate using selective laser fusing and is formed separately delivery nozzle shell (2) and coupon (4), nozzle housing Body (2) includes sequentially connected nozzle head, bar portion and mounting plate, and mounting plate bottom is respectively equipped with working connection oil inlet interface and pair oil Road oil inlet interface, working connection oil inlet interface and auxiliary oil circuit oil inlet interface are mutually perpendicular to, and are separately connected two independent oil ducts, and two Independent oil duct is arranged inside bar portion, is provided with jet hole in nozzle head, and two independent oil ducts converge to jet hole, inside bar portion It is provided with the heat-insulation chamber (1) of completely enclosed annular, heat-insulation chamber (1) wraps up two independent oil ducts；
Heat-insulation chamber (1) region of nozzle body (2) is provided with through-hole (3), through-hole (3) quantity at least two, coupon (4) it is straight Diameter and length are greater than the diameter and length of through-hole (3)；
Step 2 clears up the metal powder of substrate, nozzle body (2) surface and coupon (4), passes through through-hole (3) and clears up heat-insulation chamber (1) metal powder in；
Step 3 is sealed in coupon (4) insertion through-hole (3).
2. manufacturing process is melted in a kind of selective laser of nozzle body according to claim 1, which is characterized in that through-hole (3) diameter is 2-3mm.
3. manufacturing process is melted in a kind of selective laser of nozzle body according to claim 1, which is characterized in that step 2 In, using the metal powder in compressed air cleaning substrate, nozzle body (2) surface, coupon (4) and heat-insulation chamber (1).
4. manufacturing process is melted in the selective laser of nozzle body according to claim 3 a kind of, which is characterized in that cleaning every When metal powder in hot chamber (1), two through-holes (3) are only stayed, as air inlet, another, will as venthole for one of them All through-holes (3) are successively recycled.
5. manufacturing process is melted in a kind of selective laser of nozzle body according to claim 1, which is characterized in that through-hole (3) taper hole is used, big opening end is 3-5 ° towards outside, major diameter 2-3mm, taper, and coupon (4) is identical with through-hole (3) taper.
6. manufacturing process is melted in a kind of selective laser of nozzle body according to claim 5, which is characterized in that coupon (4) diameter is gradually reduced from from both ends to center, and diameter largest portion is greater than taper hole big opening end diameter, and diameter least part is less than Equal to taper hole osculum end diameter；It is before coupon (4) is inserted into through-hole (3), coupon (4) is therefrom separated.
7. manufacturing process is melted in a kind of selective laser of nozzle body according to claim 1, which is characterized in that step 1 In, nozzle body (2) two sides are respectively set there are two through-hole (3), and two through-holes (3) of the same side are distributed in heat-insulation chamber (1) area The through-hole (3) of domain upper and lower ends, two sides shifts to install.
8. manufacturing process is melted in a kind of selective laser of nozzle body according to claim 1, which is characterized in that step 2 After the completion, using the stress in vacuum heat-treating method removal substrate and nozzle body (2) and coupon (4) forming process.
9. manufacturing process is melted in a kind of selective laser of nozzle body according to claim 8, which is characterized in that removal is answered After power, using wire cutting method cutting substrate and nozzle body (2) and coupon (4).
10. manufacturing process is melted in a kind of selective laser of nozzle body according to claim 1, which is characterized in that step In three, coupon (4) and through-hole (3) are subjected to welded seal.
CN201910551421.6A 2019-06-24 2019-06-24 Selective laser melting forming method for nozzle shell Active CN110142408B (en)

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Cited By (7)

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Publication number Priority date Publication date Assignee Title
CN110802372A (en) * 2019-11-13 2020-02-18 中国航发动力股份有限公司 Powder outlet hole plugging method for closed heat insulation cavity of additive manufacturing nozzle shell
CN110884139A (en) * 2019-11-27 2020-03-17 中国航发沈阳黎明航空发动机有限责任公司 Design and nondestructive testing method for 3D printing nozzle shell blank structure
CN110918992A (en) * 2019-12-17 2020-03-27 中国航发动力股份有限公司 High-temperature alloy powder, additive manufacturing method and part
CN112045187A (en) * 2020-09-09 2020-12-08 中国航发沈阳黎明航空发动机有限责任公司 Process method for forming uniform-wall-thickness variable-diameter fuel spray rod through selective laser melting
CN113458416A (en) * 2020-03-31 2021-10-01 三菱重工业株式会社 Method for producing shaped article
CN113909693A (en) * 2021-10-15 2022-01-11 鑫精合激光科技发展（北京）有限公司 Method for repairing powder outlet hole of part in powder laying printing
CN115169059A (en) * 2022-09-08 2022-10-11 西安成立航空制造有限公司 Engine fuel nozzle designing and processing method and device and electronic equipment

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CN107975428A (en) * 2017-11-23 2018-05-01 中国航发沈阳黎明航空发动机有限责任公司 A kind of double oil circuit swirl atomizer auxiliary oil circuit structures
CN108035805A (en) * 2017-12-28 2018-05-15 深圳市华阳新材料科技有限公司 One kind uses the molding aero-engine of 3D printing
CN108488834A (en) * 2018-03-07 2018-09-04 成都航利航空科技有限责任公司 A kind of aero-engine fuel nozzle housing unit structure for increasing material and subtracting material manufacture
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CN106499625A (en) * 2016-11-22 2017-03-15 浙江大学 Lightweight plunger and plunger displacement pump based on SLM technology
CN106545667A (en) * 2016-11-22 2017-03-29 浙江大学 Proportional reversing valve hollow out valve element and proportional reversing valve based on SLM technologies
CN107975428A (en) * 2017-11-23 2018-05-01 中国航发沈阳黎明航空发动机有限责任公司 A kind of double oil circuit swirl atomizer auxiliary oil circuit structures
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Publication number Priority date Publication date Assignee Title
CN110802372A (en) * 2019-11-13 2020-02-18 中国航发动力股份有限公司 Powder outlet hole plugging method for closed heat insulation cavity of additive manufacturing nozzle shell
CN110884139A (en) * 2019-11-27 2020-03-17 中国航发沈阳黎明航空发动机有限责任公司 Design and nondestructive testing method for 3D printing nozzle shell blank structure
CN110918992A (en) * 2019-12-17 2020-03-27 中国航发动力股份有限公司 High-temperature alloy powder, additive manufacturing method and part
CN113458416A (en) * 2020-03-31 2021-10-01 三菱重工业株式会社 Method for producing shaped article
US11420260B2 (en) * 2020-03-31 2022-08-23 Mitsubishi Heavy Industries, Ltd. Method of manufacturing fabricated object
JP7382881B2 (en) 2020-03-31 2023-11-17 三菱重工業株式会社 Manufacturing method of modeled object
CN112045187A (en) * 2020-09-09 2020-12-08 中国航发沈阳黎明航空发动机有限责任公司 Process method for forming uniform-wall-thickness variable-diameter fuel spray rod through selective laser melting
CN112045187B (en) * 2020-09-09 2022-07-05 中国航发沈阳黎明航空发动机有限责任公司 Process method for forming uniform-wall-thickness variable-diameter fuel spray rod through selective laser melting
CN113909693A (en) * 2021-10-15 2022-01-11 鑫精合激光科技发展（北京）有限公司 Method for repairing powder outlet hole of part in powder laying printing
CN115169059A (en) * 2022-09-08 2022-10-11 西安成立航空制造有限公司 Engine fuel nozzle designing and processing method and device and electronic equipment
CN115169059B (en) * 2022-09-08 2022-12-23 西安成立航空制造有限公司 Engine fuel nozzle designing and processing method and device and electronic equipment

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