CN109664014A - A kind of process reducing the deformation of shell part electron beam welding - Google Patents
A kind of process reducing the deformation of shell part electron beam welding Download PDFInfo
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- CN109664014A CN109664014A CN201811543585.6A CN201811543585A CN109664014A CN 109664014 A CN109664014 A CN 109664014A CN 201811543585 A CN201811543585 A CN 201811543585A CN 109664014 A CN109664014 A CN 109664014A
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- welding
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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
- B23K15/00—Electron-beam welding or cutting
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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
- B23K15/00—Electron-beam welding or cutting
- B23K15/0046—Welding
- B23K15/0053—Seam welding
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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
- B23K15/00—Electron-beam welding or cutting
- B23K15/04—Electron-beam welding or cutting for welding annular seams
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Welding Or Cutting Using Electron Beams (AREA)
Abstract
A kind of process reducing the deformation of shell part electron beam welding disclosed by the invention, belongs to welding technology field.By the way that the scanning function of circle waveform is added in electron beam welding and optimizes to other welding parameters, seam center is improved, Stability margin of parameter is improved.Part is batch production in the welding process, original process understand because the fluctuation of equipment, the use time growth of filament and component assembly mass separation are bad, and generate the welding defect of nail tip defect, stomata, and the promotion of Stability margin of parameter, it can largely reduce because of above-mentioned reason bring welding defect.Compared with conventional parameter, the parameter after optimization improves the minimum weld width of weld seam, helps to promote welding quality, quality problems caused by reducing because of parameter problem improve the welding first-time qualification rate of part, reduce because part reprocesses the cost of repair welding.
Description
Technical field
The invention belongs to welding technology fields, and in particular to a kind of technique for reducing the deformation of shell part electron beam welding
Method.
Background technique
In modern gas turbine, there are more anti-asthma room housing, combustor outer casing, air inlet to be coupled the shells classes such as short tube
Part.Part is generally formed by parts such as flange installation side, cylinders by electron beam welding, and diameter of part size is larger, weld seam
Distance installation side axial dimension is smaller, simultaneously because design of part factor influences, welding fixture cannot effectively control part and stick up
Song deformation.Cause postwelding installation side warpage serious, maximum amount of warpage about 3.0mm is unable to satisfy postwelding machining needs.Such as figure
Shell part shown in 1 is formed by electron beam welding by parts such as flange installation side, cylinders, shares two circulating electrons
Beam weld seam.Shell class spare part mostly uses vacuum electron beam welding technique to be attached, and weldquality is more reliable.But due to
The characteristics of electron beam welding, the Metallographic Analysis pattern of general electron beam weld are generally Fig. 2, Fig. 3, nail shape shown in Fig. 4, funnel
Shape, wedge shape, welding tissue gradient inhomogeneities is larger, causes the buckling deformation of part.
And in batch production, existing technological parameter due to nargin it is smaller, in the fluctuation of equipment, the use of filament
Between increase and component assembly mass separation it is bad when can generate the welding defects such as nail tip defect, stomata, influence welding quality, increase
Reprocess the cost of repair welding.
Summary of the invention
To solve the above-mentioned problems, the purpose of the present invention is to provide a kind of deformations of reduction shell part electron beam welding
Process, pass through increase circle waveform scanning function and welding parameters optimization, reduce welding defect, change weld seam
Pattern, and then reduce welding buckling deformation.
The present invention is to be achieved through the following technical solutions:
The invention discloses a kind of processes of reduction shell part electron beam welding deformation, are carrying out electron beam welding
When connecing, on the basis of determining operating distance, weldingvoltage and focus current, increase the scanning function of E1 circle waveform, and pass through
Speed of welding and welding current are adjusted, realizes the optimization of welding parameter；
The scanning function of E1 circle waveform includes: the amplitude V for being parallel to bead directionx, perpendicular to the amplitude V of bead directionyWith
Scan frequency SF, wherein Vx=Vy=1.0~2.0, SF≤500Hz.
Preferably, speed of welding 14mm/s, welding current are 21~40mA, and focus current is 1500~2500mA, weldering
Connecing voltage is 150kV.
Preferably, electron beam welding uses penetrating welding technique.
Preferably, shell part is that anti-asthma room housing, combustor outer casing or air inlet connect short tube.
Preferably, the material of shell part is stainless steel or high temperature alloy.
Preferably, the maximum gauge of shell part are as follows: 300~1000mm.
Preferably, shell part with a thickness of 5~20mm.
Preferably, butt-joint clearance≤0.05mm of connector to be welded.
Preferably, shell part material to be welded is 1Cr18Ni9Ti, joint thickness 8mm, welding parameter setting
It is as follows: operating distance 518mm, weldingvoltage 150kV, 32 ± 5mA of welding current, speed of welding 14mm/s, focus current 2100
± 10mA, scan frequency SF=500Hz, Vx=2.0, Vy=2.0.
Preferably, the seam center that electron beam welding obtains is bell shape.
Compared with prior art, the invention has the following beneficial technical effects:
A kind of process reducing the deformation of shell part electron beam welding disclosed by the invention, by electron beam welding
It connects the middle scanning function that circle waveform is added and other welding parameters is optimized, improve seam center, improve Stability margin of parameter.
Part is batch production in the welding process, original process can because the fluctuation of equipment, filament increased using the time and part fills
It is bad with mass separation, and the welding defects such as nail tip defect, stomata are generated, and the promotion of Stability margin of parameter, can largely it subtract
Less because of above-mentioned reason bring welding defect.Compared with conventional parameter, the minimum welding that the parameter after optimization improves weld seam is wide
Degree helps to promote welding quality, and quality problems caused by reducing because of parameter improve the welding first-time qualification rate of part,
Reduce because part reprocesses the cost of repair welding, and reduce the welding buckling deformation of part, can satisfy postwelding machining
Requirement.
Further, the parameter after optimization is suitable for the anti-asthma room housing, combustion that material is stainless steel material and high temperature alloy
Ideal welding effect can be reached by burning shell parts, the numberical range of parameters such as chamber enclosure or air inlet connection short tube.
Further, electron beam welding uses penetrating welding technique, is on the one hand necessity that bell shape seam center is formed
Condition, on the other hand can be to avoid welding defects such as nail tip defect, stomata, incomplete fusions.
Further, the seam center that electron beam welding obtains is bell shape, nail piece shape, the wedge obtained with normal welding
Shape, funnel shaped seam center are compared, and the shape of bell shape weld seam makes seam organization gradient inhomogeneities close to parallel weld seam
It makes moderate progress, shell part installation side buckling deformation amount is made to be under control, be reduced to by about 3.0mm less than the left side 1.0mm
It is right.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of shell part；
Fig. 2 is the shape appearance figure for the spike-like weld profile that the parameter before optimization is welded；
Fig. 3 is the shape appearance figure for the infundibulate weld seam that the parameter before optimization is welded；
Fig. 4 is the shape appearance figure for the wedge-shaped weld seam that the parameter before optimization is welded；
Fig. 5 is the shape appearance figure for the bell shape weld seam that the parameter after present invention optimization is welded；
Fig. 6 is the outside drawing for the bell shape weld seam that the embodiment of the present invention 1 obtains；
In figure: 1 is cylinder；2 be flange；3 be electron beam weld.
Specific embodiment
The invention will be described in further detail with reference to the accompanying drawing:
The invention discloses a kind of processes of reduction shell part electron beam welding deformation, are suitable for material
The anti-asthma room housing of the high temperature alloys such as the stainless steel materials such as 1Cr18Ni9Ti, 1Cr12Ni3MoVN and GH4169, combustor outer casing
Or the shell parts such as air inlet connection short tube.The specification of part is general are as follows: maximum gauge: 300~1000mm, 5~20mm of thickness.
The joint of part to be welded is polished accordingly before welding and cleaning process, and the butt-joint clearance of welding point is general≤
0.05mm。
The present invention is further explained below with reference to specific embodiment, do be explanation of the invention without
It is to limit.
Embodiment 1:
The material of pipe fitting to be welded is 1Cr18Ni9Ti, and joint thickness 8mm, welding parameter sets as follows: operating distance
518mm, weldingvoltage 150kV, 32 ± 5mA of welding current, speed of welding 14mm/s, 2100 ± 10mA of focus current, scanning frequency
Rate 500Hz, Vx=2.0, Vy=2.0.Then it is welded using penetrating welding technique.
Embodiment 2:
The material of pipe fitting to be welded is 1Cr18Ni9Ti, and joint thickness 5mm, welding parameter sets as follows: operating distance
518mm, weldingvoltage 150kV, 21 ± 5mA of welding current, speed of welding 14mm/s, 2100 ± 10mA of focus current, scanning frequency
Rate 300Hz, Vx=1.0, Vy=1.0.Then it is welded using penetrating welding technique.
Embodiment 3:
The material of pipe fitting to be welded is 1Cr12Ni3MoVN, and joint thickness 11mm, welding parameter sets as follows: working distance
From 671mm, weldingvoltage 150kV, 37 ± 5mA of welding current, speed of welding 14mm/s, 2040 ± 10mA of focus current, scanning
Frequency 200Hz, Vx=1.0, Vy=1.0.Then it is welded using penetrating welding technique.
Embodiment 4:
The material of pipe fitting to be welded is GH4169, and joint thickness 20mm, welding parameter sets as follows: operating distance
650mm, weldingvoltage 150kV, 40 ± 5mA of welding current, speed of welding 14mm/s, 2070 ± 10mA of focus current, scanning frequency
Rate 500Hz, Vx=2.0, Vy=2.0.Then it is welded using penetrating welding technique.
Comparative example:
The material of pipe fitting to be welded is 1Cr18Ni9Ti, and joint thickness 8mm, welding parameter sets as follows: operating distance
518mm, weldingvoltage 150kV, 16 ± 5mA of welding current, speed of welding 18mm/s, 2100 ± 10mA of focus current are not provided with
Circular function.Then it is welded using penetrating welding technique.
Comparative example is the former welding condition before optimization, and the parameter comparison after optimization with embodiment 1 is shown in Table 1, is implemented
Example 1 increases the scanning function of E1 circle waveform, and reduces speed of welding, increases welding current.Through detecting, comparative example is generated
Buckling deformation amount be about 2.98mm.The weld appearance that embodiment 1 obtains bell shape as shown in FIG. 6, the buckling deformation of generation
Amount is about 1.02mm.Verified, the shape of the bell shape weld seam welded using the parameter after present invention optimization is approached
It makes moderate progress in the tissue gradient inhomogeneities of parallel weld seam, such as Fig. 5, weld seam, makes shell part that buckling deformation amount in side to be installed
It is under control, is reduced to reduce the welding buckling deformation of part less than 1.0mm by about 3.0mm, can satisfy postwelding machine
The requirement of tool processing, is suitble to large-scale industrial production.
Parameter comparison table after the former welding condition of table 1 and optimization
Claims (10)
1. a kind of process for reducing the deformation of shell part electron beam welding, which is characterized in that when carrying out electron beam welding,
On the basis of determining operating distance, weldingvoltage and focus current, increase the scanning function of E1 circle waveform, and by adjusting weldering
Speed and welding current are connect, realizes the optimization of welding parameter；
The scanning function of E1 circle waveform includes: the amplitude V for being parallel to bead directionx, perpendicular to the amplitude V of bead directionyAnd scanning
Frequency SF, wherein Vx=Vy=1.0~2.0, SF≤500Hz.
2. the process according to claim 1 for reducing the deformation of shell part electron beam welding, which is characterized in that weldering
Connecing speed is 14mm/s, and welding current is 21~40mA, and focus current is 1500~2500mA, weldingvoltage 150kV.
3. the process according to claim 1 for reducing the deformation of shell part electron beam welding, which is characterized in that electricity
Beamlet welding uses penetrating welding technique.
4. the process according to claim 1 for reducing the deformation of shell part electron beam welding, which is characterized in that shell
Body class part is that anti-asthma room housing, combustor outer casing or air inlet connect short tube.
5. the process according to claim 1 for reducing the deformation of shell part electron beam welding, which is characterized in that shell
The material of body class part is stainless steel or high temperature alloy.
6. the process according to claim 1 for reducing the deformation of shell part electron beam welding, which is characterized in that shell
The maximum gauge of body class part are as follows: 300~1000mm.
7. the process according to claim 1 for reducing the deformation of shell part electron beam welding, which is characterized in that shell
Body class part with a thickness of 5~20mm.
8. the process according to claim 1 for reducing the deformation of shell part electron beam welding, which is characterized in that
Butt-joint clearance≤0.05mm of welding point.
9. the process according to claim 1 for reducing the deformation of shell part electron beam welding, which is characterized in that
The shell part material of welding is 1Cr18Ni9Ti, and joint thickness 8mm, welding parameter sets as follows: operating distance
518mm, weldingvoltage 150kV, 32 ± 5mA of welding current, speed of welding 14mm/s, 2100 ± 10mA of focus current, scanning frequency
Rate SF=500Hz, Vx=2.0, Vy=2.0.
10. the process of reduction shell part electron beam welding deformation described in any one according to claim 1~9,
It is characterized in that, the seam center that electron beam welding obtains is bell shape.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201811543585.6A CN109664014A (en) | 2018-12-17 | 2018-12-17 | A kind of process reducing the deformation of shell part electron beam welding |
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| CN201811543585.6A CN109664014A (en) | 2018-12-17 | 2018-12-17 | A kind of process reducing the deformation of shell part electron beam welding |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110524101A (en) * | 2019-08-30 | 2019-12-03 | 中国航发动力股份有限公司 | A kind of welding method of electron beam welding |
| CN111531263A (en) * | 2020-05-14 | 2020-08-14 | 北京钢研高纳科技股份有限公司 | Electron beam welding method of GH4780 alloy |
| CN111702317A (en) * | 2020-06-30 | 2020-09-25 | 中国航发动力股份有限公司 | Electron beam welding method for double-sided planet weld joint structure |
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| CN106271173A (en) * | 2016-08-29 | 2017-01-04 | 中航动力股份有限公司 | A kind of method eliminating titanium alloy electron beam weld nail tip defect |
| CN106460945A (en) * | 2014-06-17 | 2017-02-22 | Ntn株式会社 | Manufacturing method for constant velocity universal joint outer joint member and outer joint member |
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| CN106460945A (en) * | 2014-06-17 | 2017-02-22 | Ntn株式会社 | Manufacturing method for constant velocity universal joint outer joint member and outer joint member |
| CN107405721A (en) * | 2015-03-19 | 2017-11-28 | 爱信艾达株式会社 | Attachment and its manufacture method |
| CN106271173A (en) * | 2016-08-29 | 2017-01-04 | 中航动力股份有限公司 | A kind of method eliminating titanium alloy electron beam weld nail tip defect |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110524101A (en) * | 2019-08-30 | 2019-12-03 | 中国航发动力股份有限公司 | A kind of welding method of electron beam welding |
| CN110524101B (en) * | 2019-08-30 | 2021-04-06 | 中国航发动力股份有限公司 | Welding method of electron beam welding |
| CN111531263A (en) * | 2020-05-14 | 2020-08-14 | 北京钢研高纳科技股份有限公司 | Electron beam welding method of GH4780 alloy |
| CN111531263B (en) * | 2020-05-14 | 2021-10-08 | 北京钢研高纳科技股份有限公司 | Electron beam welding method of GH4780 alloy |
| CN111702317A (en) * | 2020-06-30 | 2020-09-25 | 中国航发动力股份有限公司 | Electron beam welding method for double-sided planet weld joint structure |
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Application publication date: 20190423 |