CN109483037A - The one step welding method of aluminium alloy thick plate vacuum electron beam of gas hole defect can be overcome - Google Patents
The one step welding method of aluminium alloy thick plate vacuum electron beam of gas hole defect can be overcome Download PDFInfo
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- CN109483037A CN109483037A CN201811576400.1A CN201811576400A CN109483037A CN 109483037 A CN109483037 A CN 109483037A CN 201811576400 A CN201811576400 A CN 201811576400A CN 109483037 A CN109483037 A CN 109483037A
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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
- B23K15/06—Electron-beam welding or cutting within a vacuum chamber
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- Welding Or Cutting Using Electron Beams (AREA)
- Arc Welding In General (AREA)
Abstract
The invention discloses the one step welding methods of aluminium alloy thick plate vacuum electron beam that one kind can overcome gas hole defect, solve the technical issues of electron-bombardment welding is easy to produce air blister defect.With scraper blades scrape with a thickness of the welding surface of 25 millimeters of aluminium alloy plate, and with after acetone wiping welding surface, shelve 20 minutes；Using vacuum electron beam welding machine, two pairs of faces of weld of aluminium alloy plate are welded, the welding parameter of vacuum electron beam welding machine sets as follows: welding acceleration voltage as 40 kilovolts, welding line be 580 milliamperes, weldering speed be 1800 millimeters per minute, welding focus be lower focus -0.04, welding scanning patter is set as "○" type, welding scan frequency is 150 hertz, 1.0 millimeters of scan amplitude of welding；Implement after completing full penetration, weld seam is kept the temperature to 30 minutes under vacuum conditions.Hydrogen blistering formed in weld seam is considerably reduced, weldquality is greatly improved.
Description
Technical field
The present invention relates to a kind of vacuum electron beam welding methods, in particular to a kind of to use vacuum electron beam welding method pair
The method welded with a thickness of 20-55 millimeters of aluminium alloy plates.
Background technique
When welding to aluminium alloy plate, hydrogen atom can be entered in welding pool, since hydrogen atom is in liquid metal
Interior solubility is big, and with the cooling in molten bath after welding, the solubility of hydrogen atom can be mutated reduction, will by bubble nucleating, grow up,
Three step evolutions float in weld pool surface；When the bubble of formation has little time evolution, the weld metal of solidification will be remained on
It is interior, form gas hole defect.Electron-bombardment welding is a kind of high energy beam welding technique, and capacity usage ratio is high, and welding seam deep width ratio is big, heat
Influence area is narrow, and welding stress and deformation can be effectively controlled；When using electron-bombardment welding to aluminium alloy thick plate into
When row welding, since electron-bombardment welding speed of welding is fast, heat input is small, and hydrogen has little time to escape from molten bath, especially when being welded
It when object is that aluminium alloy plate thickness is larger, causes the evolution distance of the bubble in molten bath that can increase, further increases bubble hydrogen from molten
The difficulty escaped in pond, therefore, gas hole defect become one of most formidable defect of electron-bombardment welding.
Summary of the invention
The present invention provides the one step welding methods of aluminium alloy thick plate vacuum electron beam that one kind can overcome gas hole defect, solve
The technical issues of gas hole defect is easy to produce to the aluminium alloy plate welding with a thickness of 25 millimeters using electron-bombardment welding.
The present invention is to solve the above technical problem by the following technical programs:
A kind of one step welding method of aluminium alloy thick plate vacuum electron beam overcoming gas hole defect, comprising the following steps:
The first step takes the aluminium alloy plate with a thickness of 25 millimeters, with the welding surface of scraper blades scrape aluminium alloy plate, and is wiped and is welded with acetone
After junction, shelve 20 minutes；
Second step, using vacuum electron beam welding machine, two pairs of faces of weld of aluminium alloy plate are welded, vacuum electron beam welding machine
Welding parameter set it is as follows: welding acceleration voltage as 40 kilovolts, welding line be 580 milliamperes, weldering speed be it is per minute 1800 milli
Rice, welding focus are lower focus -0.04, welding scanning patter is set as "○" type, welding scan frequency is 150 hertz, welding
1.0 millimeters of scan amplitude；
Third step is implemented after completing full penetration, and weld seam is kept the temperature to 30 minutes under vacuum conditions.
The present invention overcomes aluminium alloy thick plates to be easy to produce the defect of hydrogen blistering in vacuum electron beam welding；In welding volume
Determine in range, extremely improve speed of welding and match corresponding welding line, a welding fabrication dramatically shortens in molten bath
High-temperature duration so that the hydrogen in welding process in molten bath come not yet anxious aggregation is nucleated and is formed bubble, molten bath is just
Start to solidify, considerably reduce hydrogen blistering formed in weld seam, weldquality is greatly improved.
Specific embodiment
The present invention is described in detail:
A kind of one step welding method of aluminium alloy thick plate vacuum electron beam overcoming gas hole defect, comprising the following steps:
The first step takes the aluminium alloy plate with a thickness of 25 millimeters, with the welding surface of scraper blades scrape aluminium alloy plate, and is wiped and is welded with acetone
After junction, shelve 20 minutes；
Second step, using vacuum electron beam welding machine, two pairs of faces of weld of aluminium alloy plate are welded, vacuum electron beam welding machine
Welding parameter set it is as follows: welding acceleration voltage as 40 kilovolts, welding line be 580 milliamperes, weldering speed be it is per minute 1800 milli
Rice, welding focus are lower focus -0.04, welding scanning patter is set as "○" type, welding scan frequency is 150 hertz, welding
1.0 millimeters of scan amplitude；
Third step is implemented after completing full penetration, and weld seam is kept the temperature to 30 minutes under vacuum conditions.
" extremely improve speed of welding and match corresponding welding line " design philosophy of the invention is suitable for thickness in 20-55
The welding of the aluminium alloy plate of millimeter, it is not limited to a thickness of 25 millimeters of aluminium alloy plate.
Claims (1)
1. the one step welding method of aluminium alloy thick plate vacuum electron beam that one kind can overcome gas hole defect, comprising the following steps:
The first step takes the aluminium alloy plate with a thickness of 25 millimeters, with the welding surface of scraper blades scrape aluminium alloy plate, and is wiped and is welded with acetone
After junction, shelve 20 minutes；
Second step, using vacuum electron beam welding machine, two pairs of faces of weld of aluminium alloy plate are welded, vacuum electron beam welding machine
Welding parameter set it is as follows: welding acceleration voltage as 40 kilovolts, welding line be 580 milliamperes, weldering speed be it is per minute 1800 milli
Rice, welding focus are lower focus -0.04, welding scanning patter is set as "○" type, welding scan frequency is 150 hertz, welding
1.0 millimeters of scan amplitude；
Third step is implemented after completing full penetration, and weld seam is kept the temperature to 30 minutes under vacuum conditions.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811576400.1A CN109483037A (en) | 2018-12-22 | 2018-12-22 | The one step welding method of aluminium alloy thick plate vacuum electron beam of gas hole defect can be overcome |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811576400.1A CN109483037A (en) | 2018-12-22 | 2018-12-22 | The one step welding method of aluminium alloy thick plate vacuum electron beam of gas hole defect can be overcome |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109483037A true CN109483037A (en) | 2019-03-19 |
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| CN201811576400.1A Pending CN109483037A (en) | 2018-12-22 | 2018-12-22 | The one step welding method of aluminium alloy thick plate vacuum electron beam of gas hole defect can be overcome |
Country Status (1)
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| CN (1) | CN109483037A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110560869A (en) * | 2019-07-25 | 2019-12-13 | 沈阳富创精密设备有限公司 | aluminum alloy vacuum electron beam welding method for eliminating root defects |
| CN111014927A (en) * | 2019-11-28 | 2020-04-17 | 北京航星机器制造有限公司 | Welding method for eliminating air hole defects of aluminum alloy electron beam welding seam joint |
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| GB0512766D0 (en) * | 2004-08-27 | 2005-07-27 | Draeger Medical Ag | Pressure-resistant liquid tank |
| CN1695870A (en) * | 2005-06-16 | 2005-11-16 | 哈尔滨工业大学 | Electron beam welding method of adding transition layer into compound between metals of titanium aluminium alloy |
| US20090130482A1 (en) * | 2004-05-28 | 2009-05-21 | Airbus Deutschland Gmbh | Titanium aluminium component |
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| CN103551720A (en) * | 2013-11-18 | 2014-02-05 | 沈阳黎明航空发动机(集团)有限责任公司 | Electron beam deflection welding method for short pipe |
| CN108788433A (en) * | 2018-06-26 | 2018-11-13 | 南京速镭激光科技有限公司 | Vacuum electron beam welding method and vacuum electron beam welding system for aluminium alloy |
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2018
- 2018-12-22 CN CN201811576400.1A patent/CN109483037A/en active Pending
Patent Citations (6)
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|---|---|---|---|---|
| US20090130482A1 (en) * | 2004-05-28 | 2009-05-21 | Airbus Deutschland Gmbh | Titanium aluminium component |
| GB0512766D0 (en) * | 2004-08-27 | 2005-07-27 | Draeger Medical Ag | Pressure-resistant liquid tank |
| CN1695870A (en) * | 2005-06-16 | 2005-11-16 | 哈尔滨工业大学 | Electron beam welding method of adding transition layer into compound between metals of titanium aluminium alloy |
| CN102922121A (en) * | 2012-09-26 | 2013-02-13 | 沈阳黎明航空发动机(集团)有限责任公司 | Vacuum electron beam welding method of brush type sealing ring component |
| CN103551720A (en) * | 2013-11-18 | 2014-02-05 | 沈阳黎明航空发动机(集团)有限责任公司 | Electron beam deflection welding method for short pipe |
| CN108788433A (en) * | 2018-06-26 | 2018-11-13 | 南京速镭激光科技有限公司 | Vacuum electron beam welding method and vacuum electron beam welding system for aluminium alloy |
Non-Patent Citations (1)
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| 顾曾迪等: "《有色金属焊接》", 31 May 1987 * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110560869A (en) * | 2019-07-25 | 2019-12-13 | 沈阳富创精密设备有限公司 | aluminum alloy vacuum electron beam welding method for eliminating root defects |
| CN111014927A (en) * | 2019-11-28 | 2020-04-17 | 北京航星机器制造有限公司 | Welding method for eliminating air hole defects of aluminum alloy electron beam welding seam joint |
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Application publication date: 20190319 |
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