CN1253284C - Active electron beam welding method - Google Patents
Active electron beam welding method Download PDFInfo
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- CN1253284C CN1253284C CN 02139357 CN02139357A CN1253284C CN 1253284 C CN1253284 C CN 1253284C CN 02139357 CN02139357 CN 02139357 CN 02139357 A CN02139357 A CN 02139357A CN 1253284 C CN1253284 C CN 1253284C
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- Prior art keywords
- welding
- activating agent
- active agent
- electron beam
- mno
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- Nonmetallic Welding Materials (AREA)
- Welding Or Cutting Using Electron Beams (AREA)
Abstract
The present invention relates to an active electron beam welding method. The present invention is characterized in that before electron beam welding, the surface of a welding bead is coated with an active agent, and the active agent is composed of SiO2, Cr2O3, NaCl, B2O3, TiO2 and MnO; before the active agent is used, a proper quantity of propanone is added into the active agent so that the active agent becomes paste; the pasty active agent is coated on the surface of the welding bead to be welded, the thickness of a coating layer is from twenty to thirty millimeters, and the dosage of the active agent for one meter of welding bead is two to three grams. After the propanone is volatilized, welding is carried out according to normal welding specifications.
Description
Technical field
The present invention is the method for active electrons bundle welding, comprises activating agent and using method thereof.
Technical background
Electron beam welding is a kind of melt welding method, because of the electron beam penetration power is strong, is widely used in the bigger workpiece welding of thickness.Along with thickness of workpiece increases, cost increases exponentially.In the TIG welding, propose and realized active welding for this reason, form the notion of A-TIG weldering (active TIG weldering).A-TIG (Activating flux TIG) welding is to be coated with the very thin activating agent of last layer on the surface of welding sheet material, causes that welding arc shrinks or the molten bath fluidised form changes, and can make fusion penetration increase by 2 times of 1 ∽ than conventional TIG weldering.In electron beam welding is produced, do not use activating agent at present, exist activating agent to electron beam fusion penetration influence difference or diametrically opposite conclusion in academia.
The present invention develops the activating agent that can increase the electron beam welding fusion penetration on the basis of a large amount of experiments, corresponding with the A-TIG weldering, method of the present invention is called " active electrons bundle welding method ".
Summary of the invention
The present invention is an active electrons bundle welding method, and before electron beam welding, at the surface applied activating agent of welding bead, activating agent is by SiO
2, Cr
2O
3, NaCl, B
2O
3, TiO
2Form with MnO, in activating agent, add an amount of acetone during use, make it become pasty state, activating agent in the pasty state is coated in the surface of welding bead to be welded, the coating width is 20 ∽ 30mm, and every meter welding bead consumption of activating agent is 2 ∽ 3g, treats to weld by normal welding conditions after the acetone volatilization.
Being used for the activating agent that stainless steel electronic beam welding connects is by SiO
2, Cr
2O
3, TiO
2Form with MnO, its percentage by weight is:
SiO
2：45％、Cr
2O
3：15％、TiO
2：16％、MnO：24％。
The activating agent that is used for the mild steel electron beam welding is by SiO
2, NaCl, Cr
2O
3, TiO
2, B
2O
3, and MnO, its percentage by weight is SiO
2: 46%, NaCl:14%, Cr
2O
3: TiO 14%,
2: 16%, MnO:4%, B
2O
3: 6%.
Specific implementation
With the stainless steel material is example, and specimen size is 200mm * 40mm * 10mm, adopts the straight flange groove, and two test plate (panel)s are not stayed the gap butt joint, and will try limit at two ends solid, before the weldering interface and welding bead both sides carefully cleared up with sand paper.The composition of activating agent and percentage by weight thereof are: SiO
2: Cr 45%,
2O
3: TiO 15%,
2: MnO:24% 16%.Take by weighing a certain amount of activating agent respectively and place container, stir, add proper amount of acetone, make it become pasty state.With flat hairbrush the pasty state activating agent is brushed in surface of the work to be welded, brush thickness and be advisable can hide female village true qualities, brush the about 20mm of width, every meter welding bead activating agent consumption is about 2.5g, treat just can carry out electron beam welding, its welding variables such as table 1 after the acetone volatilization:
Table 1. welding variables
| High pressure V/KV | Line I/mA | Heater current I/mA | Focus current I/mA | Weld fast V/mms -1 |
| 60 | 22.5 | 14.53 | 360 | 6 |
Under the welding conditions shown in the table 1, the fusion penetration of non-activity agent has only 1-2mm, and the fusion penetration that activating agent is arranged is 6mm.There is the molten wide of activating agent slightly to reduce, after the use activating agent, can make the fusion penetration of defocus(s)ed beam increase more than 3 times than the molten wide of non-activity agent.
After using activating agent, the chemical composition of weld seam, joint mechanical property are shown in table 2,3.By table as seen, chemical composition, the joint mechanical property of weld seam is all unaffected after the use activating agent.
The contrast of table 2. chemical composition
| The sample position | C | Si | Mn | Ni | Cr |
| The mother metal standard weld | ≤0.015 0.040 | ≤1.00 0.46 | ≤2.00 1.57 | 8.00-10.00 8.23 | 17.00-19.00 18.00 |
The mechanical property of table 3. welding point
| Tension test σ b/Mpa | Cold bending test (d=4a, α=180 °) | Corrosion resistance test GB/T13298-91 | Impact ductility test A KV(20℃)/J |
| 618 | Positive and negative curved qualified | Do not see any weld defect | 102.8 |
After using activating agent, the welding line joint microstructure still is the cable body of about 90% austenite about ten 10%.Butt welded seam joint microstructure does not influence after using activating agent.
Claims (2)
1, active electrons bundle welding method, it is characterized in that electron beam welding before, at the surface applied activating agent of welding bead, activating agent is by SiO
2, Cr
2O
3, NaCl, B
2O
3, TiO
2Form with MnO, in activating agent, add an amount of acetone during use, make it become pasty state, activating agent in the pasty state is coated in the surface of welding bead to be welded, the coating width is 20mm, and every meter welding bead consumption of activating agent is 2.5g, treats to weld by normal welding conditions after the acetone volatilization.
2, a kind of active electrons bundle welding method is used for stainless welding, it is characterized in that employed activating agent is by SiO
2, Cr
2O
3, TiO
2Form with MnO, its percentage by weight is: SiO
2: Cr 45%,
2O
3: TiO 15%,
2: MnO:24% 16%,, in activating agent, add an amount of acetone during use, make it become pasty state, activating agent in the pasty state is coated in the surface of welding bead to be welded, the coating width is 20mm, and every meter welding bead consumption of activating agent is 2.5g, treats to weld by normal welding conditions after the acetone volatilization.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 02139357 CN1253284C (en) | 2002-07-31 | 2002-07-31 | Active electron beam welding method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 02139357 CN1253284C (en) | 2002-07-31 | 2002-07-31 | Active electron beam welding method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1442264A CN1442264A (en) | 2003-09-17 |
| CN1253284C true CN1253284C (en) | 2006-04-26 |
Family
ID=27793417
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 02139357 Expired - Fee Related CN1253284C (en) | 2002-07-31 | 2002-07-31 | Active electron beam welding method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1253284C (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101890561B (en) * | 2010-07-20 | 2012-01-25 | 吉林大学 | Method for improving aluminum alloy MIG welding seam penetration |
| CN102451962A (en) * | 2010-10-26 | 2012-05-16 | 北京新风机械厂 | Stainless steel active rosin flux and preparation method thereof |
| CN103962750B (en) * | 2013-05-14 | 2016-03-23 | 南车青岛四方机车车辆股份有限公司 | A kind of activating agent for stainless steel MAG welding and using method |
-
2002
- 2002-07-31 CN CN 02139357 patent/CN1253284C/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| CN1442264A (en) | 2003-09-17 |
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|---|---|---|---|
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Owner name: LANZHOU UNIVERSITY OF TECHNOLOGY Free format text: FORMER OWNER: GANSU POLYTECHNICAL UNIV. Effective date: 20030818 |
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| TA01 | Transfer of patent application right |
Effective date of registration: 20030818 Applicant after: Lanzhou University Of Technology Applicant before: Gansu Polytechnic Univ. |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
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Owner name: BEIJING TAIBOYU JIMAO CO.,LTD. Free format text: FORMER OWNER: LANZHOU UNIVERSITY OF TECHNOLOGY Effective date: 20080815 |
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| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20080815 Address after: Beijing City, Chaoyang District Wangjing Xiyuan No. 221 Botai building 12 Patentee after: Beijing titanium platinum Yu Trade Limited company Address before: No. 85 LAN Gong Ping, Lanzhou, Gansu Patentee before: Lanzhou University Of Technology |
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| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |