CN106956053A - A kind of vacuum brazing method of titanium alloy pipeline - Google Patents
A kind of vacuum brazing method of titanium alloy pipeline Download PDFInfo
- Publication number
- CN106956053A CN106956053A CN201710128433.9A CN201710128433A CN106956053A CN 106956053 A CN106956053 A CN 106956053A CN 201710128433 A CN201710128433 A CN 201710128433A CN 106956053 A CN106956053 A CN 106956053A
- Authority
- CN
- China
- Prior art keywords
- titanium alloy
- alloy pipeline
- welding
- pipeline
- bottom outlet
- 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.)
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Classifications
-
- 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
- B23K1/008—Soldering within a furnace
-
- 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
-
- 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
- B23K2101/00—Articles made by soldering, welding or cutting
- B23K2101/04—Tubular or hollow articles
- B23K2101/06—Tubes
-
- 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
- B23K2103/00—Materials to be soldered, welded or cut
- B23K2103/08—Non-ferrous metals or alloys
- B23K2103/14—Titanium or alloys thereof
Abstract
The present invention relates to the technical field of vacuum brazing, a kind of vacuum brazing method of titanium alloy pipeline is referred in particular to.The welding bottom outlet of engine body is processed as the braze-welded structure that straight hole and cambered surface coordinate by the present invention, it is re-introduced into fiber optic scope and checks soldering gap, and carry out vacuum welding according to step a ~ step i in a vacuum furnace, solve traditional vacuum brazing fill solder not enough, the problem of there is pipe leakage risk, improves the sealing and reliability of vacuum brazing.Wherein, the braze-welded structure that the present invention is also coordinated using straight hole and cambered surface, titanium alloy pipeline is extruded by external force, so that titanium alloy pipeline produces axial location, it may insure that the bottom and the bottom of welding bottom outlet of titanium alloy pipeline are in close contact, the problem of cored solder after traditional thawing easily flows into the passage of welding bottom outlet is solved, the problem of traditional welding portion flow resistance changes the blocking risk of excessive generation is also solved, the quality of welding is improved.
Description
Technical field
The present invention relates to the technical field of vacuum brazing, a kind of vacuum brazing method of titanium alloy pipeline is referred in particular to.
Background technology
Titanium alloy is widely used in aerospace field with its excellent performance and high stability, is specifically for use in engine
In the conveyance conduit of system intermediate fuel oil and gas.Because pipe-line system is sufficiently complex, it usually needs tens of pipelines and engine
Progress between body is reliably connected, and solder side is complex-shaped, and weld seam quantity is more；It is relatively thin additionally, due to pipeline wall thickness, using argon
The larger welding method of the fuel factors such as arc-welding is easily caused commissure because thermal stress is larger or the hidden of stress cracking occurs in tube wall
Suffer from；Similarly, since mutually blocking interference between pipeline, electron-bombardment welding or method for laser welding can not be equally used.By
In vacuum brazing energy disposal molding, welding efficiency is high, and unstressed residue problem, therefore, is using the method for vacuum brazing
Solve many method for optimizing that problem is tightly connected between pipeline and engine body.
There are welded gaps and be difficult to ensure that in common vacuum brazing, there is cored solder and adhere to uneven, cause to weld after welding
Expect lack of fill, cause pipeline to there is the risk of leakage；Simultaneously as coordinating not close between pipeline and bottom outlet, cored solder is melted
Flowed into after change by latent passage inside engine runner, cause engine runner flow resistance to increase, or even the risk blocked；Above-mentioned two
Serious threat can be caused to the normal work of engine by planting risk, needed badly and taken method to solve.
The content of the invention
The present invention provides a kind of vacuum brazing method of titanium alloy pipeline for problem of the prior art.
In order to solve the above-mentioned technical problem, the present invention is adopted the following technical scheme that：
A kind of vacuum brazing method for titanium alloy pipeline that the present invention is provided, comprises the following steps：
A, cambered surface is processed as by the lower part of the welding bottom outlet of engine body；The upper part of welding bottom outlet is processed as straight hole, institute
The cambered surface for stating lower part of the lower edge of straight hole with welding bottom outlet is tangent, and the pricker of cooperation is formed between straight hole and the titanium alloy pipeline
Weld gap, the soldering gap is 0.02 ~ 0.05mm；
B, repair is carried out to the welding ends of titanium alloy pipeline, by hanging down for the exit end face of titanium alloy pipeline and titanium alloy tube pipeline outer wall
Straight degree is arranged within 0.03mm, and by rounding angle at the outer rim of the exit end face of titanium alloy pipeline；
C, bottom outlet is welded by the insertion of titanium alloy pipeline, and applies the external force perpendicular to bottom outlet end face on titanium alloy pipeline, by titanium
The bottom squeeze deformation of alloy pipeline, makes titanium alloy pipeline be fitted in the cambered surface of welding bottom outlet；
D, all titanium alloy pipeline recruitment clamps are fixed；
E, carries out checking soldering gap one by one, it is ensured that titanium alloy pipeline and engine sheet using fiber optic scope to titanium alloy pipeline
The soldering gap that cooperation is formed between body bottom outlet meets 0.02mm ~ 0.05mm；
F, using silver-based cored solder, is made your diploma by silver-based cored solder with ethene alcoholic solvent, is uniformly applied to around weld seam；
G, engine body, titanium alloy pipeline and frock clamp is put into vacuum drying oven, and air pressure in vacuum drying oven is evacuated into 2Pa
Within；
H, is heated to 800 DEG C ~ 900 DEG C, the heating-up time is 1h ~ 3h, then high temperature is kept for 10 ~ 30 minutes, is finally stopped by vacuum drying oven
Only heat, keep vacuum drying oven to be in vacuum state, cool to engine body, pipeline and frock clamp with the furnace room together
Temperature；
I, opens vacuum drying oven, takes out workpiece, removes frock clamp, completes welding.
Wherein, the cambered surface radius of the step a is 5mm ~ 20mm, and the cambered surface is highly 1mm ~ 1.5mm.
Wherein, the radius of corner is 0.05mm ~ 0.1mm.
Wherein, the engine body is titanium alloy material.
Beneficial effects of the present invention：
The welding bottom outlet of engine body is processed as the braze-welded structure that straight hole and cambered surface coordinate by the present invention, is re-introduced into fiber optic scope
Soldering gap is checked, and carries out vacuum welding according to step a ~ step i in a vacuum furnace, traditional vacuum brazing weldering is solved
Expect lack of fill, the problem of there is pipe leakage risk improves the sealing and reliability of vacuum brazing.Wherein, it is of the invention
The braze-welded structure also coordinated using straight hole and cambered surface, titanium alloy pipeline is extruded by external force so that titanium alloy pipeline is produced axially
Position, it can be ensured that the bottom of titanium alloy pipeline and the bottom of welding bottom outlet are in close contact, and solve the pricker after traditional thawing
The problem of solder easily flows into the passage of welding bottom outlet, also solves the blocking that traditional welding portion flow resistance changes excessive generation
The problem of risk, improve the quality of welding.
Brief description of the drawings
Fig. 1 is a kind of flow chart of the vacuum brazing method of titanium alloy pipeline of the present invention.
Fig. 2 is the structural representation of the vacuum brazing of the present invention.
Fig. 3 is the structural representation for welding bottom outlet of the invention.
Fig. 4 is the engine body of the present invention and the structural representation of titanium alloy pipeline.
Include in references of the Fig. 1 into Fig. 4：
The upper part of 1-engine body, 2-titanium alloy pipeline 3-welding bottom outlet
The lower part of 4-welding bottom outlet.
Embodiment
For the ease of the understanding of those skilled in the art, the present invention is made further with reference to embodiment and accompanying drawing
It is bright, the content that embodiment is referred to not limitation of the invention.Detailed retouch is carried out to the present invention below in conjunction with accompanying drawing 1-4
State.
A kind of vacuum brazing method of titanium alloy pipeline described in the present embodiment, comprises the following steps：
A, cambered surface is processed as by the lower part 4 of the welding bottom outlet of engine body 1；The upper part 3 of welding bottom outlet is processed as straight hole,
The cambered surface of lower part 4 of the lower edge of the straight hole with welding bottom outlet is tangent, is formed and coordinated between straight hole and the titanium alloy pipeline 2
Soldering gap, the soldering gap be 0.02 ~ 0.05mm；
B, carries out repair, by the exit end face of titanium alloy pipeline 2 and the outer wall of titanium alloy pipeline 2 to the welding ends of titanium alloy pipeline 2
Perpendicularity be arranged within 0.03mm, and by rounding angle at the outer rim of the exit end face of titanium alloy pipeline 2；
C, welding bottom outlet is inserted by titanium alloy pipeline 2, and applies the external force perpendicular to bottom outlet end face on titanium alloy pipeline 2, will
The bottom squeeze deformation of titanium alloy pipeline 2, makes titanium alloy pipeline 2 be fitted in the cambered surface of welding bottom outlet；Specifically, by titanium
Apply external force on alloy pipeline 2 so that the bottom squeeze deformation of titanium alloy pipeline 2, its axial deflection is 0.8mm ~ 1.5mm；
D, all titanium alloy pipelines 2 are fixed with frock clamp；Preferably, the frock clamp uses high temperature alloy Steel material；
E, is checked soldering gap, it is ensured that titanium alloy pipeline 2 and engine one by one using fiber optic scope to titanium alloy pipeline 2
The soldering gap that cooperation is formed between the bottom outlet of body 1 meets 0.02mm ~ 0.05mm；
F, using silver-based cored solder, is made your diploma by silver-based cored solder with ethene alcoholic solvent, is uniformly applied to around weld seam；
G, engine body 1, titanium alloy pipeline 2 and frock clamp is put into vacuum drying oven, and air pressure in vacuum drying oven is evacuated to
Within 2Pa；
H, is heated to 800 DEG C ~ 900 DEG C, the heating-up time is 1h ~ 3h, then high temperature is kept for 10 ~ 30 minutes, is finally stopped by vacuum drying oven
Only heat, keep vacuum drying oven to be in vacuum state, cool to engine body 1, pipeline and frock clamp with the furnace room together
Temperature；
I, opens vacuum drying oven, takes out workpiece, removes frock clamp, completes welding.
The welding bottom outlet of engine body 1 is processed as the braze-welded structure that straight hole and cambered surface coordinate by the present invention, is re-introduced into light
Fine sight glass checks soldering gap, and carries out vacuum welding according to step a ~ step i in a vacuum furnace, solves traditional vacuum
Brazing solder lack of fill, the problem of there is pipe leakage risk improves the sealing and reliability of vacuum brazing.
Wherein, the braze-welded structure that the present invention is also coordinated using straight hole and cambered surface, extrudes titanium alloy pipeline 2 by external force, makes
Obtain titanium alloy pipeline 2 and produce axial location, it can be ensured that the bottom of titanium alloy pipeline 2 and the bottom of welding bottom outlet are in close contact,
The problem of cored solder after traditional thawing easily flows into bottom outlet passage is solved, traditional welding portion flow resistance is also solved and becomes
The problem of changing the blocking risk of excessive generation, improves the quality of welding.
A kind of vacuum brazing method of titanium alloy pipeline described in the present embodiment, the cambered surface radius of the step a for 5mm ~
20mm, the cambered surface is highly 1mm ~ 1.5mm.
A kind of vacuum brazing method of titanium alloy pipeline described in the present embodiment, the radius of corner be 0.05mm ~
0.1mm。
A kind of vacuum brazing method of titanium alloy pipeline described in the present embodiment, the engine body 1 is titanium alloy material
Material.And specifically, it is preferable to which ground, titanium alloy material is TC4 titanium alloys；TC4 titanium alloys have intensity height and density is small, mechanical performance
Good, toughness and etch resistant properties are fine.
The above, is only present pre-ferred embodiments, not makees any formal limitation to the present invention, although
The present invention is disclosed as above with preferred embodiment, but is not limited to the present invention, any those skilled in the art,
Do not depart from the range of technical solution of the present invention, when the technology contents using the disclosure above make a little change or are modified to equivalent change
The Equivalent embodiments of change, as long as being, without departing from technical solution of the present invention content, to refer to according to the technology of the present invention to above example
Any simple modification, equivalent variations and the modification made, are belonged in the range of technical solution of the present invention.
Claims (4)
1. a kind of vacuum brazing method of titanium alloy pipeline, it is characterised in that comprise the following steps：
A, cambered surface is processed as by the lower part of the welding bottom outlet of engine body；The upper part of welding bottom outlet is processed as straight hole, institute
The cambered surface for stating lower part of the lower edge of straight hole with welding bottom outlet is tangent, and the pricker of cooperation is formed between straight hole and the titanium alloy pipeline
Weld gap, the soldering gap is 0.02 ~ 0.05mm；
B, repair is carried out to the welding ends of titanium alloy pipeline, by hanging down for the exit end face of titanium alloy pipeline and titanium alloy tube pipeline outer wall
Straight degree is arranged within 0.03mm, and by rounding angle at the outer rim of the exit end face of titanium alloy pipeline；
C, bottom outlet is welded by the insertion of titanium alloy pipeline, and applies the external force perpendicular to bottom outlet end face on titanium alloy pipeline, by titanium
The bottom squeeze deformation of alloy pipeline, makes titanium alloy pipeline be fitted in the cambered surface of welding bottom outlet；
D, all titanium alloy pipeline recruitment clamps are fixed；
E, carries out checking soldering gap one by one, it is ensured that titanium alloy pipeline and engine sheet using fiber optic scope to titanium alloy pipeline
The soldering gap that cooperation is formed between body bottom outlet meets 0.02mm ~ 0.05mm；
F, using silver-based cored solder, is made your diploma by silver-based cored solder with ethene alcoholic solvent, is uniformly applied to around weld seam；
G, engine body, titanium alloy pipeline and frock clamp is put into vacuum drying oven, and air pressure in vacuum drying oven is evacuated into 2Pa
Within；
H, is heated to 800 DEG C ~ 900 DEG C, the heating-up time is 1h ~ 3h, then high temperature is kept for 10 ~ 30 minutes, is finally stopped by vacuum drying oven
Only heat, keep vacuum drying oven to be in vacuum state, cool to engine body, pipeline and frock clamp with the furnace room together
Temperature；
I, opens vacuum drying oven, takes out workpiece, removes frock clamp, completes welding.
2. a kind of vacuum brazing method of titanium alloy pipeline according to claim 1, it is characterised in that：The step a's
Cambered surface radius is 5mm ~ 20mm, and the cambered surface is highly 1mm ~ 1.5mm.
3. a kind of vacuum brazing method of titanium alloy pipeline according to claim 1, it is characterised in that：The radius of corner
For 0.05mm ~ 0.1mm.
4. a kind of vacuum brazing method of titanium alloy pipeline according to claim 1, it is characterised in that：The engine sheet
Body is titanium alloy material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710128433.9A CN106956053B (en) | 2017-03-06 | 2017-03-06 | A kind of vacuum brazing method of titanium alloy pipeline |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710128433.9A CN106956053B (en) | 2017-03-06 | 2017-03-06 | A kind of vacuum brazing method of titanium alloy pipeline |
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| Publication Number | Publication Date |
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| CN106956053A true CN106956053A (en) | 2017-07-18 |
| CN106956053B CN106956053B (en) | 2019-03-26 |
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| CN201710128433.9A Active CN106956053B (en) | 2017-03-06 | 2017-03-06 | A kind of vacuum brazing method of titanium alloy pipeline |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108679059A (en) * | 2018-08-08 | 2018-10-19 | 重庆超力高科技股份有限公司 | The connection structure of side plate and attachment |
| CN110722234A (en) * | 2019-10-11 | 2020-01-24 | 哈尔滨工业大学 | Nickel titanium base alloy low-temperature connecting joint and preparation method thereof |
| CN111810480A (en) * | 2019-04-12 | 2020-10-23 | 浙江三花制冷集团有限公司 | Reversing valve and manufacturing method thereof |
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| JPS591063A (en) * | 1982-06-28 | 1984-01-06 | Mitsubishi Metal Corp | Socket and spigot brazing method of end parts of pipe and bar |
| CN87104403A (en) * | 1986-06-25 | 1988-02-03 | 昭和铅株式会社 | intake manifold and production method thereof |
| CN102528197A (en) * | 2011-11-15 | 2012-07-04 | 北京控制工程研究所 | Brazing method for titanium alloy injector of two-component thruster |
| CN102581414A (en) * | 2012-03-16 | 2012-07-18 | 李明雨 | Method for brazing copper aluminum tubes without aid of brazing flux |
| CN204321426U (en) * | 2014-12-08 | 2015-05-13 | 长春大东集团有限公司 | A kind of pipeline soldering connecting structure |
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2017
- 2017-03-06 CN CN201710128433.9A patent/CN106956053B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS591063A (en) * | 1982-06-28 | 1984-01-06 | Mitsubishi Metal Corp | Socket and spigot brazing method of end parts of pipe and bar |
| CN87104403A (en) * | 1986-06-25 | 1988-02-03 | 昭和铅株式会社 | intake manifold and production method thereof |
| CN102528197A (en) * | 2011-11-15 | 2012-07-04 | 北京控制工程研究所 | Brazing method for titanium alloy injector of two-component thruster |
| CN102581414A (en) * | 2012-03-16 | 2012-07-18 | 李明雨 | Method for brazing copper aluminum tubes without aid of brazing flux |
| CN204321426U (en) * | 2014-12-08 | 2015-05-13 | 长春大东集团有限公司 | A kind of pipeline soldering connecting structure |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108679059A (en) * | 2018-08-08 | 2018-10-19 | 重庆超力高科技股份有限公司 | The connection structure of side plate and attachment |
| CN111810480A (en) * | 2019-04-12 | 2020-10-23 | 浙江三花制冷集团有限公司 | Reversing valve and manufacturing method thereof |
| CN110722234A (en) * | 2019-10-11 | 2020-01-24 | 哈尔滨工业大学 | Nickel titanium base alloy low-temperature connecting joint and preparation method thereof |
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| CN106956053B (en) | 2019-03-26 |
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Address after: No. 601, floor 6, building S3, Fenggang Tian'an Digital City, No. 66, Dongshen Second Road, Yantian village, Fenggang town, Dongguan City, Guangdong Province Patentee after: Dongguan city meyners Aviation Technology Co. Ltd. Address before: 518000 Guangdong Province, Shenzhen city Longgang District Huangge road Tianhui building A block 818 Patentee before: Dongguan city meyners Aviation Technology Co. Ltd. |