CN110666265A - Multi-oil-path vacuum brazing method - Google Patents
Multi-oil-path vacuum brazing method Download PDFInfo
- Publication number
- CN110666265A CN110666265A CN201910884199.1A CN201910884199A CN110666265A CN 110666265 A CN110666265 A CN 110666265A CN 201910884199 A CN201910884199 A CN 201910884199A CN 110666265 A CN110666265 A CN 110666265A
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- China
- Prior art keywords
- nozzle piece
- oil
- nozzle
- connecting pipe
- brazing
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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
- B23K1/00—Soldering, e.g. brazing, or unsoldering
- B23K1/0008—Soldering, e.g. brazing, or unsoldering specially adapted for particular articles or work
-
- 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
- B23K1/00—Soldering, e.g. brazing, or unsoldering
- B23K1/20—Preliminary treatment of work or areas to be soldered, e.g. in respect of a galvanic coating
- B23K1/206—Cleaning
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Pressure Welding/Diffusion-Bonding (AREA)
Abstract
The invention belongs to the technical field of aeroengines, in particular to a multi-oil-path vacuum brazing method, which comprises the following steps: placing a first nozzle piece and a second nozzle piece in an ultrasonic cleaning machine for cleaning, removing oil stains on the surface of a material, inserting a connecting pipe between the first nozzle piece and the second nozzle piece, uniformly coating brazing filler metal at the connecting part of the connecting pipe and the first nozzle piece and the second nozzle piece, brazing the connecting part of the connecting pipe and the first nozzle piece and the second nozzle piece, and performing a pressure test on a welded workpiece; according to the pipe inserting method, firstly, the precision requirement of the parts can be reduced, the processing period of the parts is shortened, and therefore the production cost is reduced, secondly, compared with the prior art, the two workpieces are directly welded in a precise fit mode, and the pipe inserting is adopted between the two workpieces, so that the reliability of sealing between the workpieces is improved.
Description
Technical Field
The invention belongs to the technical field of aero-engines, and particularly relates to a multi-oil-path vacuum brazing method.
Background
The aircraft engine is a highly complex and precise thermal machine, provides the aircraft with the power required by flight, is known as the heart of the aircraft, is known as the 'industrial flower', directly influences the performance, reliability and economy of the aircraft, and is an important embodiment of national science and technology, industry and national defense strength.
In order to improve the performance of an aeroengine and enhance the environmental adaptability of the aeroengine, multi-oil-way nozzles are gradually developed, because oil ways are generally arranged inside, vacuum brazing connection is mostly adopted, the general solution is to optimize a welding structure, and the vacuum brazing is realized through the precise matching between the two parts, so that the welding success rate can be improved.
Because the oil circuit is generally inside, adopt vacuum brazing to connect more, singly rely on the processing structure of nozzle itself, easily lead to the cluster oil between the oil circuit, this method provides the sealed problem of solving many oil circuits vacuum brazing when.
Disclosure of Invention
To solve the problems set forth in the background art described above. The invention provides a multi-oil-passage vacuum brazing method which has the characteristics that parts are connected together through connecting pipes, the requirement on the processing state of the parts is reduced, and the welding difficulty is reduced.
In order to achieve the purpose, the invention provides the following technical scheme: a multi-oil-path vacuum brazing method comprises the following steps:
s1, placing the first nozzle piece and the second nozzle piece in an ultrasonic cleaning machine for cleaning, and removing oil stains on the surface of the material;
s2, inserting a connecting pipe between the first nozzle piece and the second nozzle piece, and uniformly smearing brazing filler metal at the connecting part of the connecting pipe and the first nozzle piece and the second nozzle piece;
s3, brazing the connection part of the connecting pipe and the first nozzle piece and the second nozzle piece;
and S4, performing a pressing test on the welded workpiece.
Preferably, the first nozzle member has a plurality of first oil passages penetrating through the first nozzle member, the second nozzle member has a number and positions of second oil passages corresponding to the number and positions of the first oil passages, and the second oil passages penetrate through the second nozzle member.
Preferably, one end of the first oil path close to the second nozzle member has a first oil path connecting portion, one end of the second oil path close to the first nozzle member has a second oil path connecting portion, and the first oil path connecting portion and the second oil path connecting portion have the same inner diameter and the same outer diameter as the second nozzle member.
Preferably, a port of the first oil path connecting portion is provided with a first expansion portion, a port of the second oil path connecting portion is provided with a second expansion portion, two ends of the connecting pipe are respectively inserted into the first oil path connecting portion and the second oil path connecting portion, and the brazing filler metal is filled in the first expansion portion and the second expansion portion and is used for welding the connecting portion.
And S3, after the workpiece is welded, keeping the temperature of the workpiece at +/-DEG C for-min.
In S4, the test pressure is MPa, and the pressure maintaining time is min.
The brazing filler metal in the S5 is Ni8CrSiB, and is uniformly coated by needle tube feeding.
Compared with the prior art, the invention has the beneficial effects that:
in the invention, a pipe inserting method is adopted, namely connecting pipes are inserted into all oil ways, and parts are connected together through the connecting pipes, so that the requirement on the processing state of the parts is reduced, and the welding difficulty is reduced.
According to the tube inserting method, firstly, the precision requirement of parts can be reduced, the processing period of the parts is shortened, and the production cost is reduced;
and secondly, compared with the prior art, the two workpieces are directly and precisely matched for welding, and the insertion pipe is adopted between the two workpieces, so that the reliability of sealing between the workpieces is improved.
Drawings
The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the principles of the invention and not to limit the invention. In the drawings:
FIG. 1 is a schematic structural diagram of the present invention.
In the figure: 1. a first nozzle member; 11. a first oil passage; 12. a first oil passage connection portion; 121. a first expanding portion; 2. a second nozzle member; 21. a second oil passage; 22. a second oil passage connection portion; 221. a second expanded portion; 3. a connecting pipe; 4. and (3) brazing filler metal.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1, the present invention provides the following technical solutions: a multi-oil-path vacuum brazing method comprises the following steps:
s1, placing the first nozzle piece 1 and the second nozzle piece 2 in an ultrasonic cleaning machine for cleaning, and removing oil stains on the surface of the material;
s2, inserting a connecting pipe 3 between the first nozzle piece 1 and the second nozzle piece 2, and uniformly smearing brazing filler metal 4 at the connecting part of the connecting pipe 3 and the first nozzle piece 1 and the second nozzle piece 2;
s3, brazing the connection part of the connecting pipe 3 and the first nozzle piece 1 and the second nozzle piece 2;
and S4, performing a pressing test on the welded workpiece.
In this embodiment, adopt the intubate method, set up the connecting pipe 3 corresponding with inside oil circuit quantity between first nozzle spare 1 and second nozzle spare 2 promptly, peg graft connecting pipe 3 in each oil circuit, link together first nozzle spare 1 and second nozzle spare 2 through connecting pipe 3, require to reduce the processing state of spare part itself, reduced the welding degree of difficulty.
Specifically, the first nozzle part 1 is provided with a plurality of first oil paths 11 penetrating through the first nozzle part 1, the second nozzle part 2 is provided with second oil paths 21 corresponding to the first oil paths 11 in number and position, the second oil paths 21 penetrate through the second nozzle part 2, and the stability of oil supply can be ensured by arranging the corresponding oil paths.
Specifically, the end of the first oil path 11 close to the second nozzle part 2 is provided with a first oil path connecting part 12, the end of the second oil path 21 close to the first nozzle part 1 is provided with a second oil path connecting part 22, the inner diameters of the first oil path connecting part 12 and the second oil path connecting part 22 are the same, the first oil path connecting part 12 and the second oil path connecting part 22 are equal to the outer diameter of the connecting pipe 3, the first oil path connecting part 12 and the second oil path connecting part 22 are respectively arranged at the port parts of the first oil path 11 and the second oil path 21, the inner diameters are equal to the outer diameter of the connecting pipe 3, the connecting pipe 3 can be clamped and installed, the installation is more stable, the.
Specifically, a first expansion part 121 is arranged at a port of the first oil passage connecting part 12, a second expansion part 221 is arranged at a port of the second oil passage connecting part 22, two ends of the connecting pipe 3 are respectively inserted into the first oil passage connecting part 12 and the second oil passage connecting part 22, the brazing filler metal 4 is filled in the first expansion part 121 and the second expansion part 221 and is welded at the joint, the brazing filler metal 4 is coated at the joint of the connecting pipe 3 and the first nozzle piece 1 and the second nozzle piece 2, and the brazing filler metal 4 can be used for forming a welding seam during brazing.
Specifically, after the workpiece is welded in S3, the workpiece is subjected to heat preservation at 1050 +/-10 ℃ for 15-20 min, and the workpiece is subjected to heat treatment, so that the strength of the workpiece is ensured.
Specifically, the test pressure in S4 is 10MPa, the pressure maintaining time is 5min, the sealing degree between workpieces can be fully tested, the welding effect is tested, and the safety and the stability are guaranteed.
Specifically, the brazing filler metal 4 in the S2 is Ni82CrSiB, and is uniformly coated by needle tube feeding so as to realize the tight combination of the welding materials.
Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that changes may be made in the embodiments and/or equivalents thereof without departing from the spirit and scope of the invention. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (7)
1. A multi-oil-path vacuum brazing method is characterized by comprising the following steps: the method comprises the following steps:
s1, placing the first nozzle piece (1) and the second nozzle piece (2) in an ultrasonic cleaning machine for cleaning, and removing oil stains on the surface of the material;
s2, inserting a connecting pipe (3) between the first nozzle piece (1) and the second nozzle piece (2), and uniformly smearing brazing filler metal (4) at the connecting part of the connecting pipe (3) and the first nozzle piece (1) and the second nozzle piece (2);
s3, brazing the connection part of the connecting pipe (3) and the first nozzle piece (1) and the second nozzle piece (2);
and S4, performing a pressing test on the welded workpiece.
2. The method of claim 1, wherein: the first nozzle piece (1) is provided with a plurality of first oil paths (11) penetrating through the first nozzle piece (1), the second nozzle piece (2) is provided with second oil paths (21) with the number and the positions corresponding to those of the first oil paths (11), and the second oil paths (21) penetrate through the second nozzle piece (2).
3. A multi-oil-passage vacuum brazing method according to claim 2, wherein: one end of the first oil path (11) close to the second nozzle piece (2) is provided with a first oil path connecting part (12), one end of the second oil path (21) close to the first nozzle piece (1) is provided with a second oil path connecting part (22), and the inner diameters of the first oil path connecting part (12) and the second oil path connecting part (22) are the same and are equal to the outer diameter of the second nozzle piece (2).
4. A multi-oil-passage vacuum brazing method according to claim 3, wherein: the port department of first oil circuit connecting portion (12) has first expansion portion (121), the port department of second oil circuit connecting portion (22) has second expansion portion (221), the both ends of connecting pipe (3) are pegged graft respectively in first oil circuit connecting portion (12) with in second oil circuit connecting portion (22), brazing filler metal (4) are filled to first expansion portion (121) and second expansion portion (221) department to weld the junction.
5. The method of claim 1, wherein: and after the workpiece is welded in the S3, keeping the temperature of the workpiece at 1050 +/-10 ℃ for 15-20 min.
6. The method of claim 1, wherein: the test pressure in the S4 is 10MPa, and the pressure maintaining time is 5 min.
7. The method of claim 1, wherein: the brazing filler metal (4) in the S2 is Ni82CrSiB, and is uniformly coated by needle tube feeding.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910884199.1A CN110666265A (en) | 2019-09-19 | 2019-09-19 | Multi-oil-path vacuum brazing method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910884199.1A CN110666265A (en) | 2019-09-19 | 2019-09-19 | Multi-oil-path vacuum brazing method |
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| CN110666265A true CN110666265A (en) | 2020-01-10 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201910884199.1A Pending CN110666265A (en) | 2019-09-19 | 2019-09-19 | Multi-oil-path vacuum brazing method |
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Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002219594A (en) * | 2001-01-19 | 2002-08-06 | Japan Steel & Tube Constr Co Ltd | Joining method in atmosphere |
| CN101115920A (en) * | 2005-02-08 | 2008-01-30 | 西门子威迪欧汽车电子股份公司 | Method for producing an injector body and corresponding injector body |
| CN104018942A (en) * | 2014-06-18 | 2014-09-03 | 中国航空动力机械研究所 | Fuel manifold joint for gas turbine and gas turbine |
| CN105171172A (en) * | 2015-09-14 | 2015-12-23 | 沈阳飞机工业（集团）有限公司 | Brazing filler metal presetting method for guide pipe brazing connection piece |
| CN207077121U (en) * | 2017-07-08 | 2018-03-09 | 江苏省江阴中等专业学校 | Energy-conserving and environment-protective pipeline welding protector |
| CN107962268A (en) * | 2017-11-17 | 2018-04-27 | 中国航发贵州黎阳航空动力有限公司 | A kind of assembly method before light wall pipe part soldering |
| CN108890168A (en) * | 2018-08-16 | 2018-11-27 | 中铁十六局集团第三工程有限公司 | A kind of tunneltron canopy socket welding type attachment device and its method |
| CN109128418A (en) * | 2018-10-19 | 2019-01-04 | 四川长虹空调有限公司 | A kind of welding procedure of heat pipe |
-
2019
- 2019-09-19 CN CN201910884199.1A patent/CN110666265A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002219594A (en) * | 2001-01-19 | 2002-08-06 | Japan Steel & Tube Constr Co Ltd | Joining method in atmosphere |
| CN101115920A (en) * | 2005-02-08 | 2008-01-30 | 西门子威迪欧汽车电子股份公司 | Method for producing an injector body and corresponding injector body |
| CN104018942A (en) * | 2014-06-18 | 2014-09-03 | 中国航空动力机械研究所 | Fuel manifold joint for gas turbine and gas turbine |
| CN105171172A (en) * | 2015-09-14 | 2015-12-23 | 沈阳飞机工业（集团）有限公司 | Brazing filler metal presetting method for guide pipe brazing connection piece |
| CN207077121U (en) * | 2017-07-08 | 2018-03-09 | 江苏省江阴中等专业学校 | Energy-conserving and environment-protective pipeline welding protector |
| CN107962268A (en) * | 2017-11-17 | 2018-04-27 | 中国航发贵州黎阳航空动力有限公司 | A kind of assembly method before light wall pipe part soldering |
| CN108890168A (en) * | 2018-08-16 | 2018-11-27 | 中铁十六局集团第三工程有限公司 | A kind of tunneltron canopy socket welding type attachment device and its method |
| CN109128418A (en) * | 2018-10-19 | 2019-01-04 | 四川长虹空调有限公司 | A kind of welding procedure of heat pipe |
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Application publication date: 20200110 |