CN104668764A - Flexible thin-walled membranous disc module vacuum electron beam welding method - Google Patents
Flexible thin-walled membranous disc module vacuum electron beam welding method Download PDFInfo
- Publication number
- CN104668764A CN104668764A CN201310632332.7A CN201310632332A CN104668764A CN 104668764 A CN104668764 A CN 104668764A CN 201310632332 A CN201310632332 A CN 201310632332A CN 104668764 A CN104668764 A CN 104668764A
- Authority
- CN
- China
- Prior art keywords
- membranous disc
- flexible thin
- walled
- welding
- disc assembly
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
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
- B23K15/00—Electron-beam welding or cutting
- B23K15/04—Electron-beam welding or cutting for welding annular seams
-
- 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
- B23K15/00—Electron-beam welding or cutting
- B23K15/0013—Positioning or observing workpieces, e.g. with respect to the impact; Aligning, aiming or focusing electronbeams
-
- 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
- B23K15/00—Electron-beam welding or cutting
- B23K15/06—Electron-beam welding or cutting within a vacuum chamber
Abstract
An engine accessory receiver and an aircraft accessory receiver are connected through a transmission shaft, and the transmission shaft is used for achieving power transfer and is known as a power take-off shaft. A membranous disc of the power take-off shaft is a flexible thin-walled part, and a weld joint is very thin. The invention provides a flexible thin-walled membranous disc module vacuum electron beam welding method for solving the technical problem. By means of the flexible thin-walled membranous disc module vacuum electron beam welding method, the problem of too large deformation of a flexible thin-walled part in the welding process is solved.
Description
Technical field
The invention belongs to aircraft engine accessory processing method, relate to for flexible thin-walled membranous disc assembly vacuum electron beam welding method.
Background technology
In aviation, due to the application of electron beam welding technology, substantially increase the manufacture level of aircraft, what make the design of the many losss of weight in aircraft manufacturing process and foreign material is welded into reality, substantially increase performance and the manufacture level of aircraft, the part manufacture being simultaneously difficult to realize for many overall processing provides a kind of processing approach, along with the needs of Modern New aircraft development, the application that electron beam welding is connected on Field of Aviation Manufacturing is increasingly extensive, and demonstrates very large superiority.
Need to be connected by power transmission shaft between engine accessory power rating casing with aircraft accessory casing, power transmission shaft will realize the effect of transmitted power, is called as power and divides shaft.What domestic application was more is that DFZ-3 power divides shaft, DFZ-1 bellows power divides shaft.In order to meet the requirement of aeroplane performance, power divides shaft to have position compensation ability simultaneously.The position compensation ability of power transmission shaft is realized by flexible thin-walled membranous disc assembly (hereinafter referred to as membranous disc assembly).
DFZ-3 power divides the membranous disc of shaft to be flexible thin wall pieces, and weld seam wall thickness is 4.5mm, and membranous disc mould surface portion wall thickness only has 0.4mm, and both differ 11 times.Weld seam will ensure through welding, shapingly well must adopt large heat input.Adopt traditional vacuum electron beam welding method, welded type produce heat be easy to be transferred to membranous disc profile place, profile will be caused to be out of shape, even to lose efficacy.
Membranous disc assembly is that flexible thin-walled membranous disc is formed by connecting by vacuum electron beam welding.Membranous disc assembly raw material are TC4 titanium alloy, because of the performance characteristics such as linear expansion coefficient is little, poor thermal conductivity cause appearance of weld difficulty, welding deformation be difficult to control.Weldquality must meet I grade of weld seam requirement in GJB1718A " electron beam welding " simultaneously.Because of weldquality, membranous disc assembly vacuum electron beam welding requires that high, flexible thin wall pieces distortion is difficult to control, part is not easy to the difficult points such as heat radiation, there is no the successful case of engineering practice at home in industry.
Summary of the invention
The technical problem to be solved in the present invention: the invention provides a kind of flexible thin-walled membranous disc assembly vacuum electron beam welding method, this method solve flexible thin wall pieces and be out of shape excessive problem in welding process.
The method that the present invention adopts is:
Before welding clean and pickling are carried out to described flexible thin-walled membranous disc assembly;
Flexible thin-walled membranous disc assembly securing member, fixture and radiating block are clamped;
Carry out welding to flexible thin-walled membranous disc assembly, adjustment welding parameter, first carry out spot welding location, then butt welded seam welds, and per pass weld seam is welding separately;
Postwelding adopts vacuum heat, to prevent weld seam in heat treatment process oxidized, guarantees weldquality;
Nondestructive inspection is carried out to per pass weld seam.
During step by flexible thin-walled membranous disc assembly fixture and radiating block clamping of a kind of embodiment of this flexible thin-walled membranous disc assembly vacuum electron beam welding method, the profile of the radiating block of the weld jig that matches with membranous disc profile is processed into the shape matched with membranous disc profile radian.。
Butterfly spring is placed between fixture and securing member by a kind of embodiment of this flexible thin-walled membranous disc assembly vacuum electron beam welding method in the step of flexible thin-walled membranous disc assembly clamp, controls erection stress.
A kind of embodiment of this flexible thin-walled membranous disc assembly vacuum electron beam welding method is the parameter optimizing weldment, the scope of the voltage chosen during welding is 48-52kv, the scope of focus current is 1910-1950mA, and welding current is 55-80mA, and speed is 5000mm/min.Test proves that the effect of welding in such a situa-tion is better.
Accompanying drawing explanation
The schematic diagram of confined state when Fig. 1 is the welding of thin-walled membranous disc
Fig. 2 is the partial enlarged drawing of the profile binding site of membranous disc profile and radiating block
Detailed description of the invention
Table 1 flexible thin-walled membranous disc components welding parameter
Each membranous disc assembly has the annular I grade of weld seam (by GJB1718A) adopting electron beam welding, and residing position all needs to bear alternate stress, and membranous disc assembly is thin walled welds part, and welding deformation is difficult to control.Tool locating and heat radiation should be adopted during welding.Concrete welding process is as follows:
1 by acetone or washes of absolute alcohol frock, and the foreign material such as wipe oil, guarantee that part is not polluted by frock.
Carefully should clear up part before 2 welding, cleaning part surfaces externally and internally without greasy dirt (can clean after alkali cleaning), should prevent impurity from entering weld seam, guarantees weldquality.
Element pickling before 3 welding, guarantees that piece surface cleans.Welding should be completed in 72 hours after element pickling, prevent part secondary pollution.
Strictly carry out process inspection before 4 welding, check weld parts faying face, answer the defect such as non-oxidation layer, coating, corrosion, scuffing, pit, guarantee weldquality.
5 assemblings
5.1 because of design of part complexity, and inner space is less is unfavorable for welding heat radiation, and be temperature distortion when controlling weld parts, per pass weld seam welds separately.
5.2 welding processes are assembled respectively, and adjust separately when each assembling, to prevent the superposition of welding deformation.
During 5.3 assembling, with reference to figure 1, the profile of the radiating block 1 of the weld jig that matches with membranous disc profile is processed into the shape matched with thin-walled membranous disc 2 profile radian, with reference to figure 2, the profile realizing thin-walled membranous disc 2 profile and radiating block 1 fits tightly, and ensures that welding heat heat radiation is abundant, equal control welding deformation.
5.4 fastening time, be placed in by butterfly spring 3 between fixture and securing member 4, ensure that erection stress is unlikely to excessive by the characteristic of butterfly spring 3, when stress goes beyond the scope, butterfly spring 3 overturns and realizes controlling erection stress, guarantee not force extruding thin-walled membranous disc 2, ensure the effect of assembly precision.
Before 5.5 assemblies welded weld again, reply assembly re-starts pickling, pollutes to avoid the metallic vapour in welding process the weld seam again welded.
6 weldings
6.1 flexible thin-walled membranous disc assemblies adopt the parameter welding of table 1.
6.2 each inner and outer rings weld seam welding procedures all must welding piece after switching, and checks appearance of weld situation, after the correctness of checking welding parameter and adaptability, after can welding product, guarantee weldquality.
6.3 control the rigging position precision of part on welding machine, and the error preventing weld seam to be partially welded and assemble, guarantees weldquality.
First carry out tack-weld before 6.4 welding, because part is heated when preventing from welding, opposite weld seam opens, and guarantees weldquality.
6.5 adopt the welding parameter (comprising welding current, weldingvoltage, focus current, speed of welding) in table 1, under guaranteeing that weldquality reaches the prerequisite of I grade of weld seam in GJB1718A, reduce thermal weld stress, to control welding deformation as far as possible.
6.6 postweldings adopt vacuum heat, to prevent weld seam in heat treatment process oxidized, guarantee weldquality.
After 6.7 heat treatments, nondestructive inspection is carried out to per pass weld seam 100%, to guarantee that all weld seams all meet I grade of weldquality requirement in GJB1718A.
Claims (4)
1. a flexible thin-walled membranous disc assembly vacuum electron beam welding method, is characterized in that, comprise the steps:
Before welding clean and pickling are carried out to described flexible thin-walled membranous disc assembly;
Flexible thin-walled membranous disc assembly securing member, fixture and radiating block are clamped;
Carry out welding to flexible thin-walled membranous disc assembly, adjustment welding parameter, first carry out spot welding location, then butt welded seam welds, and per pass weld seam is welding separately;
Postwelding adopts vacuum heat, to prevent weld seam in heat treatment process oxidized, guarantees weldquality;
Nondestructive inspection is carried out to per pass weld seam.
2. flexible thin-walled membranous disc assembly vacuum electron beam welding method as claimed in claim 1, it is characterized in that, when the described step flexible thin-walled membranous disc assembly fixture and radiating block clamped, the profile of the radiating block of the weld jig that matches with membranous disc profile is processed into the shape matched with membranous disc profile radian.
3. flexible thin-walled membranous disc assembly vacuum electron beam welding method as claimed in claim 1, is characterized in that, is placed between fixture and securing member by butterfly spring in the step of described flexible thin-walled membranous disc assembly clamp.
4. the flexible thin-walled membranous disc assembly vacuum electron beam welding method as described in claim 1-4, it is characterized in that, in the described step to the welding of flexible thin-walled membranous disc assembly, the scope of the voltage chosen is 48-52kv, the scope of focus current is 1910-1950mA, welding current is 55-80mA, and speed is 5000mm/min.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310632332.7A CN104668764A (en) | 2013-11-28 | 2013-11-28 | Flexible thin-walled membranous disc module vacuum electron beam welding method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310632332.7A CN104668764A (en) | 2013-11-28 | 2013-11-28 | Flexible thin-walled membranous disc module vacuum electron beam welding method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104668764A true CN104668764A (en) | 2015-06-03 |
Family
ID=53304632
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310632332.7A Pending CN104668764A (en) | 2013-11-28 | 2013-11-28 | Flexible thin-walled membranous disc module vacuum electron beam welding method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104668764A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106392292A (en) * | 2016-11-09 | 2017-02-15 | 哈尔滨东安发动机（集团）有限公司 | Electron beam welding method of thin-walled part |
| CN107052556A (en) * | 2016-08-23 | 2017-08-18 | 哈尔滨东安发动机（集团）有限公司 | A kind of vacuum electron beam welding method of membranous disc component |
| CN107160024A (en) * | 2017-04-26 | 2017-09-15 | 合肥江航飞机装备有限公司 | A kind of thin-walled not uniform thickness part vacuum electron beam welding method |
| CN110732829A (en) * | 2019-10-15 | 2020-01-31 | 中国航发哈尔滨东安发动机有限公司 | welding tool for shaft parts |
| CN114367836A (en) * | 2022-02-14 | 2022-04-19 | 青岛美莱轨道股份有限公司 | Multifunctional tool clamp for large thin-wall workpiece and using method thereof |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5328056A (en) * | 1976-08-28 | 1978-03-15 | Kawasaki Heavy Ind Ltd | Electron beam welding machine |
| CN1762636A (en) * | 2004-10-22 | 2006-04-26 | 沈阳黎明航空发动机(集团)有限责任公司 | Vacuum electron beam welding method for thin-walled titanium alloy assembly |
| CN101402154A (en) * | 2008-11-17 | 2009-04-08 | 北京力威尔航空精密机械有限公司 | Electron beam welding method |
| CN201559025U (en) * | 2009-11-10 | 2010-08-25 | 陶守林 | High-efficiency electron beam welding device |
| CN201824055U (en) * | 2010-10-25 | 2011-05-11 | 成都飞机工业（集团）有限责任公司 | General arc striking location clamping device for vacuum electron beam welding |
-
2013
- 2013-11-28 CN CN201310632332.7A patent/CN104668764A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5328056A (en) * | 1976-08-28 | 1978-03-15 | Kawasaki Heavy Ind Ltd | Electron beam welding machine |
| CN1762636A (en) * | 2004-10-22 | 2006-04-26 | 沈阳黎明航空发动机(集团)有限责任公司 | Vacuum electron beam welding method for thin-walled titanium alloy assembly |
| CN101402154A (en) * | 2008-11-17 | 2009-04-08 | 北京力威尔航空精密机械有限公司 | Electron beam welding method |
| CN201559025U (en) * | 2009-11-10 | 2010-08-25 | 陶守林 | High-efficiency electron beam welding device |
| CN201824055U (en) * | 2010-10-25 | 2011-05-11 | 成都飞机工业（集团）有限责任公司 | General arc striking location clamping device for vacuum electron beam welding |
Non-Patent Citations (2)
| Title |
|---|
| TC4钛合金真空电子束焊接工艺研究;杨大洪;《中国优秀硕士学位论文全文数据库》;20090915 * |
| 杨大洪: "TC4钛合金真空电子束焊接工艺研究", 《中国优秀硕士学位论文全文数据库》 * |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107052556A (en) * | 2016-08-23 | 2017-08-18 | 哈尔滨东安发动机（集团）有限公司 | A kind of vacuum electron beam welding method of membranous disc component |
| CN106392292A (en) * | 2016-11-09 | 2017-02-15 | 哈尔滨东安发动机（集团）有限公司 | Electron beam welding method of thin-walled part |
| CN107160024A (en) * | 2017-04-26 | 2017-09-15 | 合肥江航飞机装备有限公司 | A kind of thin-walled not uniform thickness part vacuum electron beam welding method |
| CN107160024B (en) * | 2017-04-26 | 2019-10-22 | 合肥江航飞机装备有限公司 | A kind of thin-walled not uniform thickness part vacuum electron beam welding method |
| CN110732829A (en) * | 2019-10-15 | 2020-01-31 | 中国航发哈尔滨东安发动机有限公司 | welding tool for shaft parts |
| CN114367836A (en) * | 2022-02-14 | 2022-04-19 | 青岛美莱轨道股份有限公司 | Multifunctional tool clamp for large thin-wall workpiece and using method thereof |
| CN114367836B (en) * | 2022-02-14 | 2024-01-23 | 青岛美莱轨道股份有限公司 | Multifunctional tool clamp for large thin-wall workpiece and application method thereof |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN104668764A (en) | Flexible thin-walled membranous disc module vacuum electron beam welding method | |
| CN104439926A (en) | Rear casing assembly manufacturing method capable of solving problems of deformation and cracking | |
| CN106392292B (en) | Electron beam welding method for thin-wall part | |
| CN102954283B (en) | Corrugated tube welding assembly and production method thereof | |
| US20060231531A1 (en) | Weld prep joint for electron beam or laser welding | |
| CN112091399B (en) | Ti2AlNb material electron beam weld joint micro-crack control method | |
| CN106670640B (en) | A kind of electro-beam welding method suitable for thin walled cover minor diameter ring flange | |
| CN109333351B (en) | Blade position fixing method in blisk repairing process | |
| CN104191095A (en) | Welding process of large-diameter annular part | |
| CN111687567A (en) | Welding process for precision parts | |
| CN112676691A (en) | Electron beam welding method for TA15 and Ti60 dissimilar titanium alloy materials | |
| CN105149763A (en) | High-voltage electron beam welding method for steam turbine spacer plate | |
| CN107825085B (en) | Integral welding method for tubular support of aircraft engine and tubular support of aircraft engine | |
| CN109128506B (en) | Aluminum alloy laser self-melting welding process without adding shielding gas | |
| CN110142495B (en) | Titanium-aluminum alloy electron beam welding method for reducing dilution rate of parent metal | |
| CN105364292A (en) | Welding deformation control method for thin-walled double-layer titanium alloy seal retainer | |
| CN105478945A (en) | Brazing method for high-temperature alloy assembly of aero-engine | |
| US3602978A (en) | Method of forming bimetallic transition joints | |
| US9937575B2 (en) | Brazed joints and methods of forming brazed joints | |
| CN104289809A (en) | Vacuum diffusion welding process for groove type cylindrical surface connecting piece | |
| Iordachescu et al. | Recent achievements and trends in laser welding of thin plates | |
| CN113770532A (en) | Method for laser space three-dimensional downward inner spiral spot welding of multilayer high-strength steel | |
| CN106312284A (en) | Vacuum electron beam welding method for titanium alloy narrow-gap weld joints | |
| CN110253108B (en) | Welding method for B-grade steel and 316L dissimilar steel | |
| CN110625284A (en) | Infrared detector Dewar welding method |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20150603 |
|
| WD01 | Invention patent application deemed withdrawn after publication |