CN109909692A - A kind of water pump twisted blade double shrouded wheel and its processing technology - Google Patents

A kind of water pump twisted blade double shrouded wheel and its processing technology Download PDF

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Publication number
CN109909692A
CN109909692A CN201910325482.0A CN201910325482A CN109909692A CN 109909692 A CN109909692 A CN 109909692A CN 201910325482 A CN201910325482 A CN 201910325482A CN 109909692 A CN109909692 A CN 109909692A
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China
Prior art keywords
double shrouded
shrouded wheel
blade
twisted blade
water pump
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CN201910325482.0A
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Chinese (zh)
Inventor
于健
李启玉
崔立军
黄司马
张化川
王鑫
宋宇
袁巍
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Shanghai MicroPowers Co Ltd
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Shanghai MicroPowers Co Ltd
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Priority to CN201910325482.0A priority Critical patent/CN109909692A/en
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Abstract

The invention discloses a kind of water pump twisted blade double shrouded wheel and its processing technologys, water pump twisted blade double shrouded wheel includes: single twisted blade, several single twisted blades are successively spliced to form double shrouded wheel, and each single twisted blade is formed by 5-shaft linkage numerical control lathe entirety Milling Machining;The stitching portion of the single twisted blade of two be disposed adjacent is welded to connect and is formed weld seam, and the quantity of weld seam is identical as the quantity of single twisted blade of double shrouded wheel.The present invention significantly improves precision, surface flatness and the double shrouded wheel weight uniformity coefficient of double shrouded wheel manufacture, the manufacturing cycle that double shrouded wheel has been greatly shortened, solves the problems such as distortion is big, occurs in quantity multiple-blade entirety milling technique difficulty of processing is big, the reliability of structure and hydraulic performance for improving double shrouded wheel simultaneously, reduce the vibration of double shrouded wheel.

Description

A kind of water pump twisted blade double shrouded wheel and its processing technology
Technical field
The present invention relates to impeller of pump manufacturing process technology field, espespecially a kind of water pump twisted blade double shrouded wheel and its processing Technique.
Background technique
Several water pump vane processing technologys general at present are respectively as follows:
1) traditional mold casting: low-vibration noise, high-efficiency blade generally use the increase number of blade at present, twisted blade is set Meter method, the impeller of blade space distortion greatly, more than blade quantity is often difficult to realize using traditional mold forging type, and is cast Make that impeller is at high cost, the production cycle is long, precision is low, rough surface, consistency low by mold Foundry Production impeller precision Difference is not suitable for impeller and precisely manufactures, more not applicable low-vibration noise high-efficiency vane wheel water pump production;
2) punching press+rivet welding: leaf production and rivet welding are completed through the stamping process on front and rear cover plate, but Sheet Metal Forming Technology is only capable of The not high prismatic blade processing of curvature is enough completed, the biggish blade processing of spatial warping, and multiple blade rivet welding points are unable to complete Runner internal resistance is increased, impeller hydraulic performance and vibration performance are affected;
3) 3D printing: metallic impeller 3D printing is completed by 3D printer, this method can be good at guaranteeing product and setting Being consistent property is counted, the process-cycle is short, but expense is very expensive, and 3D printing metallic impeller technique is not yet market-oriented at present;
4) casting cere detaches: double shrouded wheel higher for performance requirement, often internal structure complexity, leaf curling Greatly, casting mould is unable to complete casting cere and detaches, and conventional cast technique is caused to be unable to complete;
5) whole miller skill: impeller bodies are machined by entirety miller skill, by by front shroud and blade inlet edge With trailing edge local welding, double shrouded wheel production is realized, but be directed to the impeller bodies that blade amt is more, leaf curling is big, due to Spacing is too small between blade, leaf curling is big, and impeller bodies can not be completed by whole miller skill;Secondly as whole milling leaf For wheel with front shroud by local welding, weld seam is easy cracking by corrosion during impeller long-play, leads to impeller master Body and front shroud divide, and inside weld seam trailing edge impeller channel, influence impeller hydraulic performance;Due to the impeller bodies of whole milling After front shroud welding fabrication, there are gaps between front shroud and blade, and there are fluid leakages, reduce impeller hydraulic performance, because This this method could be improved.
It is higher and higher to the requirement of water pump vane manufacturing process with the raising of pump impeller design level and customer requirement, The water pump vane that low vibration designs is very high to impeller internal detail, the smooth degree requirement to runner surfaces externally and internally It is very high, therefore manufacturing process meets design requirement, could completely embody the advantage that low vibration designs, usual low vibration The usual spatial warping of impeller blade is big, using conventional machining or casting technique processing difficult to realize.Therefore it needs to develop one Kind new low vibration pump closed impeller manufacturing process, can make metallic impeller structure be consistent with design structure and Guarantee seam of impeller intensity and reliability, the technique is made to can satisfy the Performance And Reliability requirement of water pump.
Summary of the invention
The object of the present invention is to provide a kind of water pump twisted blade double shrouded wheel and its processing technologys, significantly improve and close Precision, surface flatness and the double shrouded wheel weight uniformity coefficient of the manufacture of formula impeller, the system that double shrouded wheel has been greatly shortened It makes the period, solve the problems such as distortion is big, occurs in quantity multiple-blade entirety milling technique difficulty of processing is big, improve simultaneously The reliability of structure and hydraulic performance of double shrouded wheel, reduce the vibration of double shrouded wheel.
Technical solution provided by the invention is as follows:
A kind of water pump twisted blade double shrouded wheel processing technology, comprising steps of
Single twisted blade is formed by 5-shaft linkage numerical control lathe entirety Milling Machining, wherein several described single torsions Bent blade is successively spliced to form the double shrouded wheel;
It is welded in the stitching portion for two single twisted blades being disposed adjacent and forms weld seam, wherein the weld seam Quantity it is identical as the quantity of single twisted blade of the double shrouded wheel.
In the technical program, the present invention solves the impeller bodies of the conventional whole Milling Machining of conventional water pump and front shroud welds Weld seam existing for technique loosely, welding line structure influence hydraulic performance, the problem that can not process of distortion quantity multiple-blade.It also solves simultaneously Structural deviation, the impeller surface of the conventionally produced impeller and Three Dimensional Design Model out of casting technique, the Sheet Metal Forming Technology etc. of having determined The defects of technique is poor, leaf weight is uneven, center of gravity is asymmetric (the conventionally produced double shrouded wheel come out, at high cost, production Period is long, precision is low, rough surface, and conventional impellers mold cannot achieve the biggish impeller manufacture of blade space torque, pass System technique is used in the not high impeller of batch production required precision by mold, Foundry Production impeller, but is not suitable for impeller Precisely manufacture).Batch is realized by 5-shaft linkage numerical control lathe since the structure of each single twisted blade is all the same, and Processing and production, machining accuracy is high, and the practical structures of single twisted blade and the consistency of design structure are high, so that often The structural integrity of one single twisted blade is high, ensure that the uniformity of the runner surfaces externally and internally of entire double shrouded wheel and smooth Degree.So that the present invention significantly improves precision, surface flatness and the uniform journey of double shrouded wheel weight of double shrouded wheel manufacture It spends, be greatly shortened the manufacturing cycle of double shrouded wheel, solve what distortion occurred greatly, in quantity multiple-blade entirety milling technique The problems such as difficulty of processing is big, while the reliability of structure and hydraulic performance of double shrouded wheel are improved, reduce the vibration of double shrouded wheel It is dynamic.
It is further preferred that described formed before single twisted blade also by 5-shaft linkage numerical control lathe entirety Milling Machining Comprising steps of
The double shrouded wheel is divided into several single twisted blades according to design requirement, each described single torsion Bent blade includes blade, front shroud and back shroud.
In the technical program, blade, front shroud and back shroud are designed and are processed as a whole by the present invention, real Blade, front shroud and back shroud integration machine-shaping are showed, have realized seamless between blade, front shroud and back shroud, has kept away Exempt from there is seam between front shroud and blade since the impeller bodies of whole milling are with after front shroud welding fabrication in the prior art The generation of the case where gap, there are fluid leakages.
It is further preferred that the blade includes primary blades and splitterr vanes.
In the technical program, splitterr vanes and primary blades are integrally formed, and not only improve the flow field distribution of double shrouded wheel, Further improve the mechanical integrated performance of double shrouded wheel.
It is further preferred that the thickness of the blade is 1.5-2mm.
In the technical program, vane thickness of the invention can reduce to 1.5-2mm, significantly improve the stream of this double shrouded wheel Dynamic performance.
It is further preferred that the quantity of the single twisted blade of the double shrouded wheel is 4-20.
The present invention also provides a kind of water pump twisted blade double shrouded wheels, comprising:
Single twisted blade, several single twisted blades are successively spliced to form the double shrouded wheel, and described in each Single twisted blade is formed by 5-shaft linkage numerical control lathe entirety Milling Machining;
The stitching portion of two be disposed adjacent the single twisted blade is welded to connect and is formed weld seam, and the weld seam Quantity is identical as the quantity of single twisted blade of the double shrouded wheel.
In the technical program, the present invention solves the impeller bodies of the conventional whole Milling Machining of conventional water pump and front shroud welds Weld seam existing for technique loosely, welding line structure influence hydraulic performance, the problem that can not process of distortion quantity multiple-blade.It also solves simultaneously Structural deviation, the impeller surface of the conventionally produced impeller and Three Dimensional Design Model out of casting technique, the Sheet Metal Forming Technology etc. of having determined The defects of technique is poor, leaf weight is uneven, center of gravity is asymmetric (the conventionally produced double shrouded wheel come out, at high cost, production Period is long, precision is low, rough surface, and conventional impellers mold cannot achieve the biggish impeller manufacture of blade space torque, pass System technique is used in the not high impeller of batch production required precision by mold, Foundry Production impeller, but is not suitable for impeller Precisely manufacture).Batch is realized by 5-shaft linkage numerical control lathe since the structure of each single twisted blade is all the same, and Processing and production, machining accuracy is high, and the practical structures of single twisted blade and the consistency of design structure are high, so that often The structural integrity of one single twisted blade is high, ensure that the uniformity of the runner surfaces externally and internally of entire double shrouded wheel and smooth Degree.So that the present invention significantly improves precision, surface flatness and the uniform journey of double shrouded wheel weight of double shrouded wheel manufacture It spends, be greatly shortened the manufacturing cycle of double shrouded wheel, solve what distortion occurred greatly, in quantity multiple-blade entirety milling technique The problems such as difficulty of processing is big, while the reliability of structure and hydraulic performance of double shrouded wheel are improved, reduce the vibration of double shrouded wheel It is dynamic.
It is further preferred that each described single twisted blade includes blade, front shroud and back shroud.
In the technical program, blade, front shroud and back shroud are carried out integration as a whole and are processed by the present invention Type, realizes seamless between blade, front shroud and back shroud, avoids in the prior art due to the impeller bodies of whole milling After front shroud welding fabrication, there are gap between front shroud and blade, the case where there are fluid leakages generation.
It is further preferred that the blade includes primary blades and splitterr vanes.
In the technical program, splitterr vanes and primary blades are integrally formed, and not only improve the flow field distribution of double shrouded wheel, Further improve the mechanical integrated performance of double shrouded wheel.
It is further preferred that the thickness of the blade is 1.5-2mm.
In the technical program, vane thickness of the invention can reduce to 1.5-2mm, significantly improve the stream of this double shrouded wheel Dynamic performance.
It is further preferred that the quantity of the single twisted blade of the double shrouded wheel is 4-20.
A kind of water pump twisted blade double shrouded wheel provided by the invention and its processing technology, can bring following at least one The utility model has the advantages that
1) double shrouded wheel for guaranteeing that spatial warping is big, the number of blade is more is completed to machine by way of grouping Processing, solves The certainly whole problem that can not be processed.
2) it uses five-axle linkage Milling Machining, double shrouded wheel external and internal compositions and designs a model consistent, can be good at guaranteeing The realization of design performance.
3) the double shrouded wheel surfaces externally and internally that 5-shaft linkage numerical control machine tooling comes out is very smooth, since Impeller Mass is distributed The features such as uniform, the impeller low-frequency vibration produced using the technique are very low.
4) manufacturing cycle is short, and the lead time of double shrouded wheel can be greatly shortened, and single impeller manufacturing expense is equivalent to One sleeve impeller expense is suitable for small lot and customizes.
5) welding together each single twisted blade by way of the welding of double shrouded wheel outer surface, weldering can be increased The length and width of seam guarantees the intensity and reliability of weld seam, the flow field flow without influencing impeller internal.
6) entire machining tool pertains only to 5-shaft linkage numerical control lathe, and processing method is single and is easily achieved, and passes through programming It can realize the mass production of same type of double shrouded wheel;Inhomogeneity can be realized by changing related processing parameters simultaneously The rapid batch metaplasia of the double shrouded wheel of type produces, high in machining efficiency and simple.
7) it is machined out front shroud, blade and back shroud as one group, may be implemented seamless between three, avoided After the impeller bodies and front shroud welding fabrication of whole milling, there are gaps between front shroud and blade, there are fluids The case where leakage, occurs.
8) since impeller bodies use process for machining, vane thickness can reduce to 1.5mm~2mm, and mobile performance obtains To significantly being promoted.
Detailed description of the invention
Below by clearly understandable mode, preferred embodiment is described with reference to the drawings, to water pump twisted blade enclosed leaf Wheel and its above-mentioned characteristic, technical characteristic, advantage and its implementation of processing technology are further described.
Fig. 1 is a kind of example structure schematic diagram of water pump twisted blade double shrouded wheel of the invention;
Fig. 2 is a kind of example structure schematic diagram of single twisted blade of the invention;
Fig. 3 is water pump twisted blade double shrouded wheel another kind example structure schematic diagram of the invention.
Drawing reference numeral explanation:
1. single twisted blade, 11. blades, 111. primary blades, 112. splitterr vanes, 12. front shrouds, 13. back shrouds, 141. first weld seams, 142. second weld seams, the flow field inside 15..
Specific embodiment
In order to more clearly explain the embodiment of the invention or the technical proposal in the existing technology, Detailed description of the invention will be compareed below A specific embodiment of the invention.It should be evident that drawings in the following description are only some embodiments of the invention, for For those of ordinary skill in the art, without creative efforts, it can also be obtained according to these attached drawings other Attached drawing, and obtain other embodiments.
To make simplified form, part related to the present invention is only schematically shown in each figure, their not generations Its practical structures as product of table.In addition, there is identical structure or function in some figures so that simplified form is easy to understand Component, only symbolically depict one of those, or only marked one of those.Herein, "one" not only table Show " only this ", can also indicate the situation of " more than one ".
Herein, it should be noted that unless otherwise clearly defined and limited, term " installation ", " connects " connected " Connect " it shall be understood in a broad sense, for example, it may be being fixedly connected, it may be a detachable connection, or be integrally connected;It can be machine Tool connection, is also possible to be electrically connected;It can be directly connected, two members can also be can be indirectly connected through an intermediary Connection inside part.For the ordinary skill in the art, above-mentioned term can be understood in the present invention with concrete condition Concrete meaning.
In example 1, a kind of water pump twisted blade double shrouded wheel processing technology, comprising steps of
Single twisted blade is formed by 5-shaft linkage numerical control lathe entirety Milling Machining, wherein several described single torsions Bent blade is successively spliced to form the double shrouded wheel;
It is welded in the stitching portion for two single twisted blades being disposed adjacent and forms weld seam, wherein the weld seam Quantity it is identical as the quantity of single twisted blade of the double shrouded wheel.
In the present embodiment, since the structure of each single twisted blade is all the same, and pass through 5-shaft linkage numerical control machine Bed realizes batch machining and production, and machining accuracy is high, and the practical structures of single twisted blade and the consistency of design structure are high, So that the structural integrity of each single twisted blade is high, the whole of the runner surfaces externally and internally of entire double shrouded wheel ensure that Qi Du and smoothness, improve the hydraulic performance and reliability of impeller, and the vibrating noise for reducing the pump housing work when being, meet The process requirements and use demand of the big double shrouded wheel of spatial warping.Manufacturing cycle is short, and double shrouded wheel can be greatly shortened Lead time, single impeller manufacturing expense are equivalent to a sleeve impeller expense, are suitable for small lot and customize.In practical applications, lead to The mode crossed in the welding of double shrouded wheel outer surface welds together each single twisted blade, can increase the length and width of weld seam Degree, guarantees the intensity and reliability of weld seam, without influencing the flow field flow inside double shrouded wheel.
In example 2, a kind of water pump twisted blade double shrouded wheel processing technology, it is on the basis of example 1, described It is further comprised the steps of: before forming single twisted blade by 5-shaft linkage numerical control lathe entirety Milling Machining
The double shrouded wheel is divided into several single twisted blades according to design requirement, each described single torsion Bent blade includes blade, front shroud and back shroud.
In the present embodiment, blade, front shroud and back shroud are designed and are processed as a whole, leaf is realized Piece, front shroud and back shroud integration machine-shaping, realize seamless between blade, front shroud and back shroud, avoid existing Have since the impeller bodies of whole milling are with after front shroud welding fabrication in technology, there are gaps between front shroud and blade, deposit The case where fluid leaks.
In the third embodiment, a kind of water pump twisted blade double shrouded wheel processing technology, on the basis of example 2, blade Including primary blades and splitterr vanes.Splitterr vanes and primary blades are integrally formed, and not only improve the flow field distribution of double shrouded wheel, Further improve the mechanical integrated performance of double shrouded wheel.Preferably, the quantity of the single twisted blade of double shrouded wheel is 4-20.When So, in practical applications, the single twisted blade of double shrouded wheel can also be 6-12.And the number of the single distortion impeller of double shrouded wheel Amount is configured according to pump housing flow design needs.
In example IV, as shown in Figure 1-3, a kind of water pump twisted blade double shrouded wheel, comprising: single twisted blade 1, Several single twisted blades 1 are successively spliced to form double shrouded wheel, and each single twisted blade 1 passes through 5-shaft linkage numerical control Lathe entirety Milling Machining is formed;The stitching portion of the single twisted blade 1 of two be disposed adjacent is welded to connect and is formed weld seam, and welds The quantity of seam is identical as the quantity of single twisted blade 1 of double shrouded wheel.In practical applications, 5-shaft linkage numerical control machine is first passed through The whole Milling Machining of bed forms each single twisted blade 1, then two single twisted blades 1 in contiguous concatenation together Stitching portion is welded, so that the single twisted blade 1 of two of contiguous concatenation is welded to connect, it is worth noting that, individually The weld seam of twisted blade 1 is located only within the outer surface of double shrouded wheel, i.e., along the preceding outer surface that the axis direction of double shrouded wheel is arranged With rear outer surface so that two single twisted blades 1 be formed by weld seam include positioned at preceding outer surface the first weld seam 141 and The second weld seam 142 positioned at rear outer surface, it is worth noting that, the splicing of two single twisted blades 1 is in double shrouded wheel Without being welded at the flow field 15 in portion, avoid flow field 15 inside double shrouded wheel because weld seam there are due to influence hydraulic performance.
In embodiment five, as shown in Figure 1-3, each single twisted blade 1 includes leaf on the basis of example IV Piece 11, front shroud 12 and back shroud 13.Back shroud 13 is arranged close to the central axis of double shrouded wheel and is set to the end of blade 11 End, and 12 structure of front shroud is projected on the preceding outer surface of double shrouded wheel and encloses and sets set on central axis along the axis direction of double shrouded wheel It sets.Blade 11, front shroud 12 and back shroud 13 are carried out integrated machine-shaping by the present invention as a whole, realize blade 11, seamless between front shroud 12 and back shroud 13, avoid impeller bodies and front cover in the prior art due to whole milling After 12 welding fabrication of plate, there are gap between front shroud 12 and blade 11, the case where there are fluid leakages generation.Preferably, leaf Piece 11 includes primary blades 111 and splitterr vanes 112.Splitterr vanes 112 are located in the flow field 15 inside double shrouded wheel, and several The preceding outer surface and rear outer surface of primary blades 111 together constitute the preceding outer surface and rear outer surface of double shrouded wheel.Preferably, leaf The thickness of piece 11 is 1.5-2mm.11 thickness of blade can reduce to 1.5-2mm, and mobile performance is improved significantly.It is preferred that Ground, the quantity of the single twisted blade 1 of double shrouded wheel are 4-20.Certainly, in practical applications, the single distortion leaf of double shrouded wheel Piece 1 can also be 6-12.And the quantity of the single distortion impeller of double shrouded wheel is configured according to pump housing flow design needs.
It should be noted that above-described embodiment can be freely combined as needed.The above is only of the invention preferred Embodiment, it is noted that for those skilled in the art, in the premise for not departing from the principle of the invention Under, several improvements and modifications can also be made, these modifications and embellishments should also be considered as the scope of protection of the present invention.

Claims (10)

1. a kind of water pump twisted blade double shrouded wheel processing technology, which is characterized in that comprising steps of
Single twisted blade is formed by 5-shaft linkage numerical control lathe entirety Milling Machining, wherein several described single distortion leaves Piece is successively spliced to form the double shrouded wheel;
It is welded in the stitching portion for two single twisted blades being disposed adjacent and forms weld seam, wherein the number of the weld seam It measures identical as the quantity of single twisted blade of the double shrouded wheel.
2. water pump twisted blade double shrouded wheel processing technology according to claim 1, which is characterized in that
Described formed before single twisted blade by 5-shaft linkage numerical control lathe entirety Milling Machining further comprises the steps of:
The double shrouded wheel is divided into several single twisted blades according to design requirement, each described single distortion leaf Piece includes blade, front shroud and back shroud.
3. water pump twisted blade double shrouded wheel processing technology according to claim 2, it is characterised in that:
The blade includes primary blades and splitterr vanes.
4. water pump twisted blade double shrouded wheel processing technology according to claim 2, it is characterised in that:
The thickness of the blade is 1.5-2mm.
5. water pump twisted blade double shrouded wheel processing technology according to any one of claims 1-4, it is characterised in that:
The quantity of the single twisted blade of the double shrouded wheel is 4-20.
6. a kind of water pump twisted blade double shrouded wheel characterized by comprising
Single twisted blade, several single twisted blades are successively spliced to form the double shrouded wheel, and each is described single Twisted blade is formed by 5-shaft linkage numerical control lathe entirety Milling Machining;
The stitching portion of two be disposed adjacent the single twisted blade is welded to connect and is formed weld seam, and the quantity of the weld seam It is identical as the quantity of single twisted blade of the double shrouded wheel.
7. water pump twisted blade double shrouded wheel according to claim 6, it is characterised in that:
Each described single twisted blade includes blade, front shroud and back shroud.
8. water pump twisted blade double shrouded wheel according to claim 7, it is characterised in that:
The blade includes primary blades and splitterr vanes.
9. water pump twisted blade double shrouded wheel according to claim 7, it is characterised in that:
The thickness of the blade is 1.5-2mm.
10. according to water pump twisted blade double shrouded wheel described in claim 6-9 any one, it is characterised in that:
The quantity of the single twisted blade of the double shrouded wheel is 4-20.
CN201910325482.0A 2019-04-23 2019-04-23 A kind of water pump twisted blade double shrouded wheel and its processing technology Pending CN109909692A (en)

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Application Number Priority Date Filing Date Title
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CN110653579A (en) * 2019-10-28 2020-01-07 襄阳五二五泵业有限公司 Method for manufacturing closed impeller with narrow flow passage
CN112247492A (en) * 2020-10-26 2021-01-22 航天科工哈尔滨风华有限公司 Method for connecting impeller cover of closed impeller and impeller
CN114087025A (en) * 2021-11-18 2022-02-25 新乡航空工业(集团)有限公司 Combined closed impeller with milling blades and impeller manufacturing method

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CN105209208A (en) * 2013-02-20 2015-12-30 诺沃皮尼奥内股份有限公司 Method for making an impeller from sector segments
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DE102009013819A1 (en) * 2009-03-18 2010-09-23 Mtu Aero Engines Gmbh Guide vane assembly manufacturing method for gas turbine, involves joining vane blanks to guide vane assembly for gas turbine, and reprocessing joined assembly via electro-chemical spark machining and milling
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Publication number Priority date Publication date Assignee Title
CN110653579A (en) * 2019-10-28 2020-01-07 襄阳五二五泵业有限公司 Method for manufacturing closed impeller with narrow flow passage
CN112247492A (en) * 2020-10-26 2021-01-22 航天科工哈尔滨风华有限公司 Method for connecting impeller cover of closed impeller and impeller
CN112247492B (en) * 2020-10-26 2022-08-12 航天科工哈尔滨风华有限公司 Method for connecting impeller cover of closed impeller and impeller
CN114087025A (en) * 2021-11-18 2022-02-25 新乡航空工业(集团)有限公司 Combined closed impeller with milling blades and impeller manufacturing method

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Application publication date: 20190621