CN105904078B - Electron beam zoom soldering method and system - Google Patents
Electron beam zoom soldering method and system Download PDFInfo
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- CN105904078B CN105904078B CN201610481336.3A CN201610481336A CN105904078B CN 105904078 B CN105904078 B CN 105904078B CN 201610481336 A CN201610481336 A CN 201610481336A CN 105904078 B CN105904078 B CN 105904078B
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- electron beam
- weld seam
- focusing
- focus
- exciting current
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Classifications
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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
Abstract
The present invention discloses a kind of electron beam zoom soldering method and system, it is according to the speed of welding v of electron beam, selective focus exciting current I change frequencies and focusing exciting current I change waveforms, so that keyhole tends to be synchronous along the welding direction speed of development with focusing on exciting current I change frequencies, i.e., electron beam spot is always positioned at the bottom of keyhole or the bottom close to keyhole.The present invention is welded using zoom, is advantageous to keyhole to longitudinal depth development.Same electron beam parameter can obtain deeper weld seam and higher welding seam deep width ratio using zoom weldering, be advantageous to improve the welding performance of electron-beam welder.
Description
Technical field
The present invention relates to electron Beam Machining field, and in particular to a kind of electron beam zoom soldering method and system.
Background technology
The electron beam of high-energy-density is because beam spot diameter, is small, heating region is concentrated, thus firing rate is exceedingly fast, and is obtained
Peak temperature it is high, the boiling point of metal can be rapidly reached.When the power density that the electron beam weldering of big thick member needs has been above
Conduct the critical pow er density 10 of weldering5W/cm2When, the feature of this electron beam deep penetration welding is exactly keyhole occurred.Solution at present
Releasing keyhole formation mechenism has two kinds of viewpoints：1. evaporation penetrate mechanism think the evaporation of metal at line shock point for
Deep penetration welding plays decisive action, and the main drive that fusing metal is moved to edge behind molten bath is vaporization reaction force, so as to
Making, there is the metal or alloy of higher vapor pressure, which to have, deeper penetrates.2. fusing penetrates mechanism and thinks that keyhole is vapour pressure and surface
The common results of melt flows caused by tension gradient upward and outward.Explain in any case, the formation of keyhole, maintain with it is steady
It is fixed, and the size of keyhole, size, form and its characteristic that keyhole is determined with the correlation of electron beam and welding material, and
Its quasistatic behavior and dynamic behaviour characteristic in welding process determines the quality that electron beam deep penetration welding connects again.
Due to electron beam envelope line in axial direction using focus as the tapered divergent shape in boundary both ends, and the electron beam of big thick member at present
Weldering is all to use to focus weldering, when only electron beam spot acts on metal, could obtain maximum vapour pressure.Therefore regardless of electron beam
Focus is located at weld seam longitudinally any fixed position, and keyhole is in top-down generating process, during the electron beam spot overwhelming majority
Between be not located at the bottom of keyhole, so as to reduce keyhole developing in depth.
The content of the invention
The technical problems to be solved by the invention are existing deep penetration welding processes using weldering is focused, and its electron beam spot is not
It is so as to the problem of can not giving full play to keyhole positioned at the bottom of keyhole, there is provided a kind of electron beam zoom soldering method and be
System.
To solve the above problems, the present invention is achieved by the following technical solutions：
A kind of electron beam zoom soldering method, according to the speed of welding v of electron beam, selective focus exciting current I change frequencies
Change waveform with exciting current I is focused on so that keyhole is along the welding direction speed of development with focusing on exciting current I change frequencies
Tend to be synchronous, i.e., electron beam spot is always positioned at the bottom of keyhole or the bottom close to keyhole.
Above-mentioned electron beam zoom soldering method, it is as follows to specifically include step：
Step 1：According to the material of workpiece and its requirement of weld seam longitudinal direction depth process, electricity is selected by experience or expert database
Beamlet power and speed of welding v；
Step 2：According to the surface location of longitudinal depth of the weld seam of workpiece and weld seam from the height at electron beam outlet, really
Determine the higher limit Imax and lower limit Imin that focus on exciting current I of focusing arrangement；Wherein focus on exciting current I higher limit
Imax causes the focus of electron beam to be located at weld seam high position G, and the lower limit Imin for focusing on exciting current I causes the focus position of electron beam
In weld seam low level D；
Step 3：According to step 1 select speed of welding v, selective focus exciting current I change frequencies so that keyhole along
The welding direction speed of development tends to be synchronous with focusing on exciting current I change frequencies, i.e., electron beam spot is always positioned at keyhole
Bottom or the bottom close to keyhole；
Step 4：Selective focus exciting current I changes waveform；
Step 5：Start electron-beam welder, by the welding condition of selection weld until terminating.
In such scheme, weld seam high position G is located at the upper surface of weld seam between the center line of weld seam, and weld seam low level D is positioned at weldering
The center line of seam is between the lower surface of weld seam.
A kind of electron beam zoom welds system, including electron beam generator, focusing arrangement, focusing power supply, central control unit,
Benchtop supply and workbench；Central control unit is connected with focusing power supply and benchtop supply；Focusing power supply connection focuses on dress
Put winding；Benchtop supply connecting working table motor；
Central control unit, produce and focus on exciting current I control instructions and movable workbench control instruction；Produce electricity simultaneously
Control instruction and the running parameter detection of whole equipment of beamlet welding machine；
Electron beam generator, under the control of central control unit, produce controllable electron beam；
Focusing power supply, under the control of central control unit, produce controllable focusing exciting current I, focusing excitation electricity
Stream I is supplied to focusing arrangement winding；
Focusing arrangement, electron beam can be converged in into certain point i.e. focus, and be produced in the presence of controllable focusing exciting current I
Raw variable focus exciting current I so that the focus of electron beam moves up and down；
Benchtop supply, under the control of central control unit, produce stage motor driving power；
Workbench, workpiece is carried, under the control in central control unit so that the weld seam on workpiece continues through electronics
Beam.
Compared with prior art, the present invention is welded using zoom, and keyhole is along the welding direction speed of development with focusing on excitation
Electric current I change frequencies tend to be synchronous, and the focus of electron beam is always positioned at the bottom of keyhole (or close to bottom), is advantageous to keyhole effect
Should be to longitudinal depth development.Same electron beam parameter can obtain deeper weld seam using zoom weldering and higher weld seam is deep wide
Than, be advantageous to improve electron-beam welder welding performance.
Brief description of the drawings
Fig. 1 is the schematic diagram that electron beam zoom welds system.
Fig. 2 is the sectional view of workpiece in Fig. 1.
Fig. 3 focuses on exciting current I oscillograms to be a kind of.
Fig. 4 is the flow chart of electron beam zoom soldering method.
Marked in figure：1st, electron beam generating apparatus；2nd, focusing arrangement；3rd, focusing power supply；4th, central control unit；5th, work
Platform power supply；6th, workbench；7th, workpiece；71st, weld seam；8th, electron beam.
Embodiment
A kind of electron beam zoom welds system, as shown in figure 1, including electron beam generator 1, focusing arrangement 2, focusing power supply 3,
Central control unit 4, benchtop supply 5 and workbench 6.
Electron beam generator 1：Under the control of central control unit 4, electron beam generator 1 produces controllable electron beam 8.
Focusing arrangement 2：After electron beam 8 is by focusing arrangement 2, certain point (focus) can be converged in.
Focusing power supply 3：The winding of focusing arrangement 2 is provided and focuses on exciting current I, controls focusing to encourage by central control unit 4
Magnetoelectricity stream I changes can control the focus of electron beam 8 to move up and down.
Central control unit 4：Produce and focus on exciting current I control instructions and the movement control instruction of workbench 6；Produce simultaneously
Control instruction and the running parameter detection of whole equipment of electron-beam welder.
Benchtop supply 5：The motor driving power of workbench 6 is provided.
Workbench 6：Workpiece 7 is carried, under the control of central control unit 4, the weld seam 71 on workpiece 7 continues through electron beam
8。
A kind of electron beam zoom soldering method that above-mentioned electron beam zoom weldering system is realized, as shown in figure 4, including following step
Suddenly：
Step 1：According to the material of workpiece 7 and its requirement of 71 longitudinal depth process of weld seam, selected by experience or expert database
Select the power of electron beam 8 and speed of welding v.
Step 2：According to the 71 longitudinal depth of weld seam and the surface location of weld seam 71 of workpiece 7 from the exit of electron gun electron beam 8
Height, it is determined that focus on exciting current I upper lower limit values.The higher limit Imax for wherein focusing on exciting current I corresponds to the focus of electron beam 8
The high-order G positions of weld seam 71 in fig. 2, focus on exciting current I lower limits Imin and correspond to the focus of the electron beam 8 low level D of weld seam 71 in fig. 2
Position.G positions are located at that the longitudinal depth upper surface of weld seam 71 is optional to the somewhere between center line, and D positions are located at the longitudinal depth center line of weld seam 71
It is optional to the somewhere between lower surface.
Step 3：The speed of welding v selected according to step 1, selective focus exciting current I change frequencies, that is, determine in Fig. 3
Cycle T so that keyhole tends to be synchronous along the welding direction speed of development with focusing on exciting current I change frequencies, i.e. electron beam 8
Focus is always positioned at the bottom (or bottom close to keyhole) of keyhole.
Step 4：Selective focus exciting current I changes waveform, and a kind of focusing exciting current I of sawtooth waveforms is given in Fig. 3
Waveform, the focusing exciting current I waveforms of other waveforms also can be selected.
Step 5：Start electron-beam welder, by the welding condition of selection weld until terminating.
Claims (3)
1. a kind of electron beam zoom soldering method, it is characterized in that, specifically comprise the following steps：
Step 1：According to the material of workpiece (7) and its longitudinal depth process requirement of weld seam (71), selected by experience or expert database
Select electron beam (8) power and speed of welding v；
Step 2：Exported according to the surface location of longitudinal depth of the weld seam (71) of workpiece (7) and weld seam (71) from electron beam (8)
The height at place, determine the higher limit Imax and lower limit Imin that focus on exciting current I of focusing arrangement (2)；Wherein focus on excitation
Electric current I higher limit Imax causes the focus of electron beam (8) to be located at weld seam (71) high-order G, focuses on exciting current I lower limit
Imin causes the focus of electron beam (8) to be located at weld seam (71) low level D；
Step 3：The speed of welding v selected according to step 1, selective focus exciting current I change frequencies so that keyhole is along welding
The direction speed of development tends to be synchronous with focusing on exciting current I change frequencies, i.e., electron beam (8) focus is always positioned at the bottom of keyhole
Portion or the bottom close to keyhole；
Step 4：Selective focus exciting current I changes waveform；
Step 5：Start electron-beam welder, by the welding condition of selection weld until terminating.
2. a kind of electron beam zoom soldering method according to claim 1, it is characterized in that, weld seam (71) high-order G is located at weld seam
(71) between the center line of weld seam (71), weld seam (71) low level D is located at the center line of weld seam (71) to weld seam (71) for upper surface
Between lower surface.
3. a kind of electron beam zoom weldering system designed by the method based on claim 1, it is characterized in that, including electron beam generation
Device (1), focusing arrangement (2), focusing power supply (3), central control unit (4), benchtop supply (5) and workbench (6)；Center control
Unit (4) processed and focusing power supply (3) and benchtop supply (5)；Focusing power supply (3) connects focusing arrangement (2) winding；Workbench electricity
Source (5) connecting working table (6) motor；
Central control unit (4), produce and focus on exciting current I control instructions and workbench (6) movement control instruction；Produce simultaneously
Control instruction and the running parameter detection of whole equipment of electron-beam welder；
Electron beam generator (1), under the control of central control unit (4), produce controllable electron beam (8)；
Focusing power supply (3), under the control of central control unit (4), produce controllable focusing exciting current I, the focusing excitation
Electric current I is supplied to focusing arrangement (2) winding；
Focusing arrangement (2), electron beam (8) can be converged in into certain point i.e. focus, and in controllable focusing exciting current I effect
Under so that the focus of electron beam (8) moves up and down；
Benchtop supply (5), under the control of central control unit (4), produce motor driving power；
Workbench (6), carrying workpiece (7), drive workbench (6) mobile by motor so that the weld seam (71) on workpiece (7) is even
It is continuous to pass through electron beam (8).
Priority Applications (1)
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| CN201610481336.3A CN105904078B (en) | 2016-06-24 | 2016-06-24 | Electron beam zoom soldering method and system |
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| CN201610481336.3A CN105904078B (en) | 2016-06-24 | 2016-06-24 | Electron beam zoom soldering method and system |
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| CN105904078A CN105904078A (en) | 2016-08-31 |
| CN105904078B true CN105904078B (en) | 2017-11-17 |
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Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110788466B (en) * | 2019-10-31 | 2021-11-30 | 中国航发南方工业有限公司 | Space three-dimensional curve continuous non-uniform zooming variable-section electron beam welding method |
| CN110788467B (en) * | 2019-10-31 | 2021-11-26 | 中国航发南方工业有限公司 | Space curve electron beam welding method |
| CN117733305B (en) * | 2024-02-20 | 2024-04-26 | 四川华束科技有限公司 | Sealed-off type electron gun and non-vacuum electron beam welding robot |
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| CN105904078A (en) | 2016-08-31 |
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Address after: No. 5-1 Pioneer Industrial Park, Kungming West Road, Guilin City, Guangxi Zhuang Autonomous Region, 541004 Patentee after: Guilin Shida Technology Co.,Ltd. Address before: No. 5-1 Pioneer Industrial Park, Kungming West Road, Guilin City, Guangxi Zhuang Autonomous Region, 541004 Patentee before: GUILIN THD MECHANICAL & ELECTRICAL ENGINEERING CO.,LTD. |
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Effective date of registration: 20220719 Address after: 100101 building 21, Anyuan, Anhui Beili, Chaoyang District, Beijing Patentee after: SINOPEC ENGINEERING Inc. Patentee after: Guilin Shida Technology Co.,Ltd. Address before: No. 5-1 Pioneer Industrial Park, Kungming West Road, Guilin City, Guangxi Zhuang Autonomous Region, 541004 Patentee before: Guilin Shida Technology Co.,Ltd. |