CN106735827B - A kind of martensitic stain less steel electron beam welding control method - Google Patents
A kind of martensitic stain less steel electron beam welding control method Download PDFInfo
- Publication number
- CN106735827B CN106735827B CN201611170291.4A CN201611170291A CN106735827B CN 106735827 B CN106735827 B CN 106735827B CN 201611170291 A CN201611170291 A CN 201611170291A CN 106735827 B CN106735827 B CN 106735827B
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- welding
- welded
- electron beam
- pipe fitting
- martensitic stain
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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
-
- 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
- B23K2103/02—Iron or ferrous alloys
- B23K2103/04—Steel or steel alloys
- B23K2103/05—Stainless steel
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Welding Or Cutting Using Electron Beams (AREA)
Abstract
The invention discloses a kind of martensitic stain less steel electron beam welding control methods, comprising the following steps: step 1, pipe fitting to be welded is placed under vacuum environment；Step 2, welding pool is stirred using elliptic function；Step 3, the elimination of stomata, air pocket is conducive to using different speeds of welding for different throat thickness.Soldering part is treated using level electron beam penetration welding manner to be welded, can be realized the two-sides forming of part, and can effectively reduce the stomata and air pocket generated in welding, improves the welding quality and processing efficiency of engine component.
Description
Technical field
The invention belongs to electron beam welding technology fields, are related to a kind of martensitic stain less steel electron beam welding control method.
Background technique
In the manufacture of gas turbine and aero-engine, the electron beam welding of martensitic stain less steel is especially common in China.
The electron beam welding of martensitic stain less steel often will appear the defects of stomata, air pocket, seriously affect processing efficiency, affects and starts
The producing efficiency of machine extends the fabrication cycle of engine to a certain extent.The generation of stomata, air pocket how is reduced, improves one
Secondary solder yield is of great significance for the electron beam welding of martensitic stain less steel.
Summary of the invention
The purpose of the present invention is to provide a kind of martensitic stain less steel electron beam welding control methods.Weldering can be effectively reduced
The stomata and air pocket for connecing middle generation improve the processing efficiency and producing efficiency of engine.
The purpose of the present invention is achieved through the following technical solutions:
This martensitic stain less steel electron beam welding control method, comprising the following steps: step 1, pipe fitting to be welded is set
Under vacuum environment；Step 2, welding pool is stirred using elliptic function；Step 3, it is used and is worn using level electron beam
Saturating formula welding manner is treated soldering part and is welded.
Further, the features of the present invention also characterized in that:
Wherein the vacuum degree of vacuum environment is 5*10 in step 1-4mbar。
Wherein the long axis of elliptic function is consistent with welding direction in step 2.
When wherein the thickness of pipe fitting to be welded is less than 20mm in step 3, speed of welding 8-10mm/s.
When wherein the thickness of pipe fitting to be welded is not less than 20mm in step 3, speed of welding 4-5mm/s.
When wherein the thickness of pipe fitting to be welded is more than or equal to 25mm in step 3, welded using Vertical electron Shu Jinhang.
When wherein pipe fitting to be welded includes multiple circular welds in step 3, first carry out carrying out part whole positioning, then
Successively weld seam is welded.
The beneficial effects of the present invention are: being stirred using elliptic function to welding pool in welding, while reducing molten
The cooling velocity in pond improves the liquid state molten pool residence time, is conducive to the evolution of gas；It is welded simultaneously using level electron beam
It connects, is conducive to the evolution of gas from two channels；Using welding manner is penetrated, horizontal electron beam can be in same welding ginseng
Under several, increase the depth of weld, and overcome influence of the gravity to appearance of weld, keep weld seam full, two-sides forming.
Further, by test of many times, when the long axis of elliptic function is consistent with welding direction of advance, molten bath it is cold
But, liquid state molten pool stops and gas evolution effect is best.
Further, made not for the difference of part thickness to be welded using different speed of welding and welding manner
The soldering part of stack pile can be realized better welding effect.
Further, for the part of multiple circular welds, whole tack welding is first carried out, then successively weld to weld seam
It connects, avoids that gap caused by shrinking because of welding is overproof, while avoiding due to weld gap and causing the possibility of gas hole defect
Property.
Specific embodiment
The invention will be described in further detail With reference to embodiment:
The present invention provides a kind of martensitic stain less steel electron beam welding control method, specific steps include:
Step 1, pipe fitting to be welded is placed under vacuum environment, vacuum degree 4*10-4mbar。
Step 2, welding pool is stirred using elliptic function, wherein the long axis of elliptic function and welding direction are same
To.
Step 3, it when the thickness of pipe fitting to be welded is greater than 25mm, is welded using Vertical electron Shu Jinhang penetration；Wherein to
When the thickness of soldering part is less than 20mm, penetration welding, speed of welding 8-10mm/s are carried out using level electron beam；It is to be welded
When the thickness of pipe fitting is more than or equal to 20mm, penetration welding, speed of welding 4-5mm/s are carried out using level electron beam.When
Part includes multiple circular welds, first carries out whole tack welding, then successively weld to weld seam.
Specific embodiments of the present invention are:
Embodiment 1
Carry out the welding of circular weld to martensitic stain less steel pipe fitting to be welded, pipe fitting to be welded with a thickness of 12mm, weldering
The detailed process connect is:
Step 1, pipe fitting to be welded is placed in vacuum environment, vacuum degree 5*10-4mbar。
Step 2, welding pool is stirred using elliptic function, wherein the long axis of elliptic function and welding direction are same
To.
Step 3, it treats soldering part using level electron beam penetration welding manner to be welded, first in circular weld
It is upper first to carry out tack welding, and tack weld firm welding, then electron beam welding is carried out to part, wherein speed of welding is
10mm/s。
Embodiment 2
Carry out the welding of circular weld to martensitic stain less steel pipe fitting to be welded, pipe fitting to be welded with a thickness of 18mm, weldering
The detailed process connect is:
Step 1, pipe fitting to be welded is placed in vacuum environment, vacuum degree 5*10-4mbar。
Step 2, welding pool is stirred using elliptic function, wherein the long axis of elliptic function and welding direction are same
To.
Step 3, it treats soldering part using level electron beam penetration welding manner to be welded, first in circular weld
It is upper first to carry out tack welding, and tack weld firm welding, then electron beam welding is carried out to part, wherein speed of welding is 8mm/
s。
Embodiment 3
Carry out the welding of 3 circular welds to martensitic stain less steel pipe fitting to be welded, pipe fitting to be welded with a thickness of 20mm,
The detailed process of welding is:
Step 1, pipe fitting to be welded is placed in vacuum environment, vacuum degree 4*10-4mbar。
Step 2, welding pool is stirred using elliptic function, wherein the long axis of elliptic function and welding direction are same
To.
Step 3, it treats soldering part using level electron beam penetration welding manner to be welded, first in circular weld
It is upper first to carry out tack welding, and tack weld firm welding, then electron beam welding is carried out to part, wherein speed of welding is 5mm/
s。
Embodiment 5
Carry out the welding of 3 circular welds to martensitic stain less steel pipe fitting to be welded, pipe fitting to be welded with a thickness of 24mm,
The detailed process of welding is:
Step 1, pipe fitting to be welded is placed in vacuum environment, vacuum degree 5*10-4mbar。
Step 2, welding pool is stirred using elliptic function, wherein the long axis of elliptic function and welding direction are same
To.
Step 3, it treats soldering part using level electron beam penetration welding manner to be welded, first to 3 annulars
Weld seam carries out tack welding, and tack weld firm welding, then successively welds again to 3 weld seams, wherein speed of welding
For 5mm/s.
Embodiment 6
Carry out the welding of 4 circular welds to martensitic stain less steel pipe fitting to be welded, pipe fitting to be welded with a thickness of 28mm,
The detailed process of welding is:
Step 1, pipe fitting to be welded is placed in vacuum environment, vacuum degree 5*10-4mbar。
Step 2, welding pool is stirred using elliptic function, wherein the long axis of elliptic function and welding direction are same
To.
Step 3, penetration welding is carried out to part using level electron beam and Vertical electron beam.First to 4 annular welds
Seam carries out tack welding, and tack weld firm welding, then successively welds from top to bottom to 4 weld seams again, wherein welding
Connecing speed is 4mm/s.
Using method of the invention, the stomata problem of the electron beam welding of martensitic stain less steel is efficiently controlled,
Slab can realize two-sides forming, and appearance of weld is full, and inside does not also find that stomata, air pocket beyond standard remain, for medium
The problem of part of thickness, linear porosity, is also resolved, and one time solder yield greatly improves.
Claims (2)
1. a kind of martensitic stain less steel electron beam welding control method, which comprises the following steps:
Step 1, pipe fitting to be welded is placed under vacuum environment；
Step 2, welding pool is stirred using elliptic function；
Step 3, soldering part is treated using penetration welding manner using level electron beam to be welded；The thickness of pipe fitting to be welded
When degree is less than 20mm, speed of welding 8-10mm/s；When the thickness of pipe fitting to be welded is more than or equal to 20mm, level electron beam is used
Carry out penetration welding, speed of welding 4-5mm/s；
The long axis of elliptic function is consistent with welding direction in the step 2；
The detailed process welded in the step 3 is: when pipe fitting to be welded includes multiple circular welds, it is fixed to carry out several first
Position solder joint treats soldering part and carries out whole positioning, then successively welds again to weld seam.
2. martensitic stain less steel electron beam welding control method according to claim 1, which is characterized in that the step 1
Vacuum degree≤5*10 of middle vacuum environment-4mbar。
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| CN106735827B true CN106735827B (en) | 2019-11-05 |
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Families Citing this family (3)
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| CN109365980B (en) * | 2018-12-10 | 2023-05-26 | 淮南新能源研究中心 | Vacuum electron beam welding method applied to nuclear fusion device and vacuum chamber |
| CN110560873A (en) * | 2019-07-25 | 2019-12-13 | 沈阳富创精密设备有限公司 | Vacuum electron beam welding method for stainless steel water cooling ring |
| CN111375880A (en) * | 2020-03-31 | 2020-07-07 | 中国航发动力股份有限公司 | Electron beam welding method for rotor parts |
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| CN101690991A (en) * | 2009-10-14 | 2010-04-07 | 重庆理工大学 | Ultrasonic auxiliary vacuum electron beam welding method of aluminum and aluminum alloy |
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| CN103706938A (en) * | 2013-12-11 | 2014-04-09 | 中国航空工业集团公司北京航空制造工程研究所 | Electron beam welding method and system using multiple heat sources to control residual stress |
| CN104400203A (en) * | 2014-10-09 | 2015-03-11 | 中国科学院合肥物质科学研究院 | Electron beam welding process suitable for encapsulation molding of martensitic steel high-density runner |
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2016
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Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH1015671A (en) * | 1996-05-13 | 1998-01-20 | Mitsubishi Heavy Ind Ltd | Welding method for electron beam welding structure of different material |
| RU2238828C1 (en) * | 2003-05-05 | 2004-10-27 | Нижегородское открытое акционерное общество "Гидромаш" | High-strength steel electronic beam welding method |
| CN101412149A (en) * | 2007-10-17 | 2009-04-22 | 沈阳黎明航空发动机(集团)有限责任公司 | Electron-bombardment welding technique |
| CN101690991A (en) * | 2009-10-14 | 2010-04-07 | 重庆理工大学 | Ultrasonic auxiliary vacuum electron beam welding method of aluminum and aluminum alloy |
| CN102500906A (en) * | 2011-11-04 | 2012-06-20 | 中国科学院金属研究所 | Method for welding heterogeneous austenitic stainless steel plates |
| CN103537788A (en) * | 2013-09-24 | 2014-01-29 | 成都泛华航空仪表电器有限公司 | Method for welding thin-walled cylinder with magnet sleeved inside in seal housing component |
| CN103706938A (en) * | 2013-12-11 | 2014-04-09 | 中国航空工业集团公司北京航空制造工程研究所 | Electron beam welding method and system using multiple heat sources to control residual stress |
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Address after: Weiyang Xu Jia Wan 710021 Shaanxi city of Xi'an Province Patentee after: AECC AVIATION POWER CO., LTD. Address before: Weiyang Xu Jia Wan 710021 Shaanxi city of Xi'an Province Patentee before: AVIC AVIATION ENGINE CORPORATION PLC |