CN103894721A - Stirring friction welding method with pre-welding and post-welding dual ultrasonic synchronous vibration assisting - Google Patents
Stirring friction welding method with pre-welding and post-welding dual ultrasonic synchronous vibration assisting Download PDFInfo
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- CN103894721A CN103894721A CN201410102593.2A CN201410102593A CN103894721A CN 103894721 A CN103894721 A CN 103894721A CN 201410102593 A CN201410102593 A CN 201410102593A CN 103894721 A CN103894721 A CN 103894721A
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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
- B23K20/00—Non-electric welding by applying impact or other pressure, with or without the application of heat, e.g. cladding or plating
- B23K20/12—Non-electric welding by applying impact or other pressure, with or without the application of heat, e.g. cladding or plating the heat being generated by friction; Friction welding
- B23K20/122—Non-electric welding by applying impact or other pressure, with or without the application of heat, e.g. cladding or plating the heat being generated by friction; Friction welding using a non-consumable tool, e.g. friction stir welding
-
- 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
- B23K20/00—Non-electric welding by applying impact or other pressure, with or without the application of heat, e.g. cladding or plating
- B23K20/10—Non-electric welding by applying impact or other pressure, with or without the application of heat, e.g. cladding or plating making use of vibrations, e.g. ultrasonic welding
-
- 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
- B23K20/00—Non-electric welding by applying impact or other pressure, with or without the application of heat, e.g. cladding or plating
- B23K20/26—Auxiliary equipment
-
- 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
- B23K28/00—Welding or cutting not covered by any of the preceding groups, e.g. electrolytic welding
- B23K28/02—Combined welding or cutting procedures or apparatus
-
- 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
- B23K2101/00—Articles made by soldering, welding or cutting
- B23K2101/18—Sheet panels
- B23K2101/185—Tailored blanks
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Pressure Welding/Diffusion-Bonding (AREA)
Abstract
The invention discloses a stirring friction welding method with pre-welding and post-welding dual ultrasonic synchronous vibration assisting. According to the method, the ultrasonic wave is exerted on a weld joint in the welding process, stirring friction welding with pre-welding and post-welding dual ultrasonic synchronous vibration assisting is achieved, the constitutive relation of a material is changed through the ultrasonic wave, the resistance to deformation of the material is lowered through the ultrasonic vibration exerted before welding, the welding resistance subjected by a stirring head in the welding process is reduced, the welding speed is improved, the welding quality is improved, and the applicable range of welding parameters is enlarged. Grain refinement is produced on the material in the weld joint area with the high temperature through the ultrasonic vibration exerted after welding, and the mechanical property of a connector is improved. By means of the split-type design of the stirring head and an amplitude-changing pole of an ultrasonic generator, the defect that the ultrasonic vibration of an integrally designed stirring needle is obstructed by huge down force can be avoided.
Description
Technical field
The present invention relates to a kind of material method of attachment, be specifically related to the auxiliary friction stir welding method of the front dual ultrasonic synchronous vibration of postwelding of a kind of weldering.
Background technology
Friction stir welding is as a kind of advanced person's solid phase interconnection technique, from 1991 by Britain's institute of welding (The Welding Institute, TWI) since invention, due to it, to have welding deformation low, residual stress is little, joint quality is good, without protective gas and packing material, can eliminate pore, be mingled with, the weld defects such as crackle, and do not produce arc light, flue dust, the plurality of advantages such as noise pollution are in space flight, aviation, shipbuilding, train, automobile, multiple industry manufacture field such as electric power are used widely, be called as one of " 21 century the revolutionary interconnection technique of tool ".But because friction stir welding is a kind of solid phase interconnection technique, in stir friction welding process, material does not melt, and stirring-head, under the effect of large axial downforce and horizontal shear force, is restricted speed of welding, stirring-head is easy to wear, is installed and has also proposed very high requirement before butt welding.For this reason, Chinese scholars is improved welding process by the mode that adopts the additional auxiliary thermal sources such as induction heat, resistance heat, laser or plasma arc.Along with ultrasonic technology is increasingly mature in industrial application, hyperacoustic various characteristics is applied in industrial processes gradually effectively.Someone proposes to improve welding process by composite ultraphonic in the process of friction stir welding, thereby can improve speed of welding and welding quality.But in this design, axial compressive force larger when welding can have a negative impact to the ultrasonic vibration of stirring-head, this will have a strong impact on ultrasonic practical function effect, at present relevant report, only limits to plate sheet welding.Meanwhile, in the time that stirring-head and ultrasonic transducer ultrasonic transformer are connected as a single entity, need to adopt complicated installing mechanism.
Summary of the invention
Before the object of this invention is to provide a kind of weldering, friction stir welding method is assisted in the dual ultrasonic synchronous vibration of postwelding, by servicing unit in welding process, what directly ultrasonic vibration is applied to the test specimen to be welded in stirring-head front and stirring-head be soldered still keeps the new method on higher temperature weld seam, utilize ultrasonic vibration to reduce the resistance of deformation of material, thereby reach raising speed of welding, improve welding quality, postwelding further utilizes the ultrasonic vibrational energy providing to make the weld metal zone material generation grain refinement that temperature is higher simultaneously, improves the mechanical property of joint.
Method of the present invention realizes by following steps: the auxiliary friction stir welding method of the dual ultrasonic synchronous vibration of postwelding before a kind of weldering, as follows:
Step 1, by two sheet materials to be welded with overlap joint or docking mode be placed on workbench, then use clamp on workbench;
Step 2, first ultrasonic wave is imported from the to-be-welded region of stirring-head front 5～25mm by the delivery of the first ultrasonic transducer, the delivery of the first ultrasonic transducer in welding process along with stirring-head is along welding direction synchronizing moving, start friction stir welding machine, allow stirring-head with rotating speed 200-1500r/min, speed of welding 10-1000mm/min, the welding parameter of shaft shoulder volume under pressure 0.05-1mm is welded along welding direction;
Step 3, advance after a segment distance 5～25mm when stirring-head, delivery by the second ultrasonic transducer imports ultrasonic wave from the welding region of stirring-head rear side, the delivery of the second ultrasonic transducer along with stirring-head is along welding direction synchronizing moving, echoes mutually and forms the auxiliary friction stir welding of the front dual ultrasonic synchronous vibration of postwelding of weldering with the delivery of the second ultrasonic transducer in welding process.
The present invention also has following feature:
1, the vibration frequency of ultrasonic transducer output is 15～110kHz.
2, the delivery of ultrasonic transducer is horizontal by 25 °～75 ° angles.
3, two described sheet materials to be welded are non-ferrous metal.
The present invention by being applied to ultrasonic wave on weld seam in welding process, before having realized weldering, friction stir welding is assisted in the dual ultrasonic synchronous vibration of postwelding, change the constitutive relation of material by ultrasonic wave, the ultrasonic vibration applying before weldering declines the resistance of deformation of material, thereby the welding resistance that in reduction welding process, stirring-head is subject to, improve speed of welding, improve welding quality, expand the applicable scope of welding parameter; The ultrasonic vibration that postwelding applies, makes the weld metal zone material generation grain refinement that temperature is higher, improves the mechanical property of joint.The drawback that the split type design of stirring-head and transducer ultrasonic transformer can avoid the ultrasonic vibration of integral type design mixing needle hindered by huge downforce, and do not change existing equipment, only needing to add assisting ultrasonic equipment can use, vibrational system is applicable to all size stirring-head, and the different thicknesss of slab of different materials are all had to good adaptability.Compare with common friction stir welding, before weldering, the effect of the auxiliary friction stir welding of the dual ultrasonic synchronous vibration of postwelding is mainly reflected in following three aspects: one, before weldering, assisting ultrasonic can obtain good appearance of weld under less shaft shoulder pressure, thereby can reduce the requirement of friction stir welding to equipment; Two, before weldering, assisting ultrasonic can obtain good appearance of weld in the situation that improving speed of welding; Three, postwelding assisting ultrasonic, nugget district and all refinements to some extent of heat engine zone of influence crystal grain in Microstructure of Joint, have certain positive impact to improving seam organization, contributes to improve the mechanical property of weld seam.
Accompanying drawing explanation
Fig. 1 is the schematic diagram that the present invention welds the auxiliary friction stir welding method of the dual ultrasonic synchronous vibration of front postwelding.
The specific embodiment
Embodiment 1
In conjunction with Fig. 1, present embodiment is described, the auxiliary friction stir welding method of the dual ultrasonic synchronous vibration of postwelding before the one weldering described in present embodiment, realize by following steps:
Step 1, by two sheet materials 4.5 to be welded with overlap joint or docking mode be placed on workbench, and with fixture clamping on workbench;
Step 2, the first ultrasonic transducer is set, industrial-frequency alternating current is converted to superaudible high frequency ac signal, be ultrasonic mechanical vibrational energy through transducer by electric energy conversion again, further amplify after amplitude through ultrasonic transformer, delivery 1 by the first ultrasonic transducer first imports ultrasonic wave from the to-be-welded region of stirring-head front 5mm, delivery 1 can be along with stirring-head be along welding direction synchronizing moving in welding process, start friction stir welding machine, allow stirring-head with rotating speed 200r/min, speed of welding 10mm/min, the welding parameter of shaft shoulder volume under pressure 0.05mm is welded along welding direction,
Step 3, the second ultrasonic transducer is set, industrial-frequency alternating current is converted to superaudible high frequency ac signal, be ultrasonic mechanical vibrational energy through transducer by electric energy conversion again, further amplify amplitude through ultrasonic transformer, when stirring-head 3 advances after a segment distance 5mm, delivery 2 by the second ultrasonic transducer imports ultrasonic wave from stirring-head welding region around, delivery 2 can, along with stirring-head is along welding direction synchronizing moving in welding process, echoes and form the auxiliary friction stir welding of the front dual ultrasonic synchronous vibration of postwelding of weldering with delivery 1 mutually.The preferred vibration frequency 15kHz of ultrasonic transformer of described ultrasonic transducer.Each delivery is horizontal by 25 ° of angles.
Embodiment 2
In conjunction with Fig. 1, present embodiment is described, the auxiliary friction stir welding method of the dual ultrasonic synchronous vibration of postwelding before the one weldering described in present embodiment, realize by following steps:
Step 1, by two sheet materials 4.5 to be welded with overlap joint or docking mode be placed on workbench, and with fixture clamping on workbench;
Step 2, the first ultrasonic transducer is set, industrial-frequency alternating current is converted to superaudible high frequency ac signal, be ultrasonic mechanical vibrational energy through transducer by electric energy conversion again, further amplify after amplitude through ultrasonic transformer, delivery 1 by the first ultrasonic transducer first imports ultrasonic wave from the to-be-welded region of stirring-head front 25mm, delivery 1 can be along with stirring-head be along welding direction synchronizing moving in welding process, start friction stir welding machine, allow stirring-head with rotating speed 1500r/min, speed of welding 1000mm/min, the welding parameter of shaft shoulder volume under pressure 1mm is welded along welding direction,
Step 3, the second ultrasonic transducer is set, industrial-frequency alternating current is converted to superaudible high frequency ac signal, be ultrasonic mechanical vibrational energy through transducer by electric energy conversion again, further amplify amplitude through ultrasonic transformer, when stirring-head 3 advances after a segment distance 25mm, delivery 2 by the second ultrasonic transducer imports ultrasonic wave from stirring-head welding region around, delivery 2 can, along with stirring-head is along welding direction synchronizing moving in welding process, echoes and form the auxiliary friction stir welding of the front dual ultrasonic synchronous vibration of postwelding of weldering with delivery 1 mutually.The preferred vibration frequency 110kHz of ultrasonic transformer of described ultrasonic transducer.Each delivery is horizontal by 75 ° of angles.
Embodiment 3
In present embodiment step 1, two described sheet materials to be welded are non-ferrous metal.Other step is identical with embodiment 1.
Claims (4)
1. the auxiliary friction stir welding method of the dual ultrasonic synchronous vibration of postwelding before weldering, is characterized in that, method is as follows:
Step 1, by two sheet materials to be welded with overlap joint or docking mode be placed on workbench, then use clamp on workbench;
Step 2, first ultrasonic wave is imported from the to-be-welded region of stirring-head front 5～25mm by the delivery of the first ultrasonic transducer, the delivery of the first ultrasonic transducer in welding process along with stirring-head is along welding direction synchronizing moving, start friction stir welding machine, allow stirring-head with rotating speed 200-1500r/min, speed of welding 10-1000mm/min, the welding parameter of shaft shoulder volume under pressure 0.05-1mm is welded along welding direction;
Step 3, advance after a segment distance 5～25mm when stirring-head, delivery by the second ultrasonic transducer imports ultrasonic wave from the welding region of stirring-head rear side, the delivery of the second ultrasonic transducer along with stirring-head is along welding direction synchronizing moving, echoes mutually and forms the auxiliary friction stir welding of the front dual ultrasonic synchronous vibration of postwelding of weldering with the delivery of the second ultrasonic transducer in welding process.
2. the auxiliary friction stir welding method of the dual ultrasonic synchronous vibration of postwelding before a kind of weldering according to claim 1, is characterized in that: the vibration frequency of ultrasonic transducer output is 15～110kHz.
3. the auxiliary friction stir welding method of the dual ultrasonic synchronous vibration of postwelding before a kind of weldering according to claim 1, is characterized in that: the delivery of ultrasonic transducer is horizontal by 25 °～75 ° angles.
4. the auxiliary friction stir welding method of the dual ultrasonic synchronous vibration of postwelding before a kind of weldering according to claim 1, is characterized in that: two described sheet materials to be welded are non-ferrous metal.
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| CN201410102593.2A CN103894721A (en) | 2014-03-13 | 2014-03-13 | Stirring friction welding method with pre-welding and post-welding dual ultrasonic synchronous vibration assisting |
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Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105108360A (en) * | 2015-08-28 | 2015-12-02 | 昆山斯格威电子科技有限公司 | Lithium battery electrode double-head friction stir and ultrasonic combined welding method |
| CN105108359A (en) * | 2015-08-28 | 2015-12-02 | 昆山斯格威电子科技有限公司 | Lithium battery electrode friction stir and ultrasonic combined welding method |
| CN106238901A (en) * | 2016-08-22 | 2016-12-21 | 上海航天设备制造总厂 | A kind of ultrasonic wave added agitating friction weldering soldering appliance and welding method |
| CN106583916A (en) * | 2017-01-23 | 2017-04-26 | 沈阳航空航天大学 | Method for repairing long volume type defects in metal component by utilizing friction stir welding |
| CN106956074A (en) * | 2017-03-03 | 2017-07-18 | 中国人民解放军火箭军工程大学 | Friction stir welding method based on person of outstanding talent gram energy technology |
| CN107695511A (en) * | 2017-11-14 | 2018-02-16 | 哈尔滨工业大学（威海） | A kind of ultrasonic wave added dissimilar materials agitating friction lap device and bridging method |
| CN111421221A (en) * | 2020-05-07 | 2020-07-17 | 铜陵学院 | Friction stir butt welding device and machining method thereof |
| CN112427799A (en) * | 2020-11-16 | 2021-03-02 | 中国电子科技集团公司第十四研究所 | Friction stir welding manufacturing method of large-size high-thickness aluminum alloy panel |
| CN113134675A (en) * | 2021-03-16 | 2021-07-20 | 哈尔滨工业大学 | Friction stir welding method and system based on ultrasonic detection |
| CN113894406A (en) * | 2021-11-30 | 2022-01-07 | 中车洛阳机车有限公司 | Double-vibration-source ultrasonic friction stir welding processing system and welding method thereof |
| CN114769878A (en) * | 2022-06-20 | 2022-07-22 | 中山大学 | Double-side reciprocating sound field auxiliary laser welding device and method |
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Cited By (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105108360A (en) * | 2015-08-28 | 2015-12-02 | 昆山斯格威电子科技有限公司 | Lithium battery electrode double-head friction stir and ultrasonic combined welding method |
| CN105108359A (en) * | 2015-08-28 | 2015-12-02 | 昆山斯格威电子科技有限公司 | Lithium battery electrode friction stir and ultrasonic combined welding method |
| CN106238901A (en) * | 2016-08-22 | 2016-12-21 | 上海航天设备制造总厂 | A kind of ultrasonic wave added agitating friction weldering soldering appliance and welding method |
| CN106583916B (en) * | 2017-01-23 | 2018-11-23 | 沈阳航空航天大学 | A method of long volume flaw in metal component is answered with agitating friction repair welding |
| CN106583916A (en) * | 2017-01-23 | 2017-04-26 | 沈阳航空航天大学 | Method for repairing long volume type defects in metal component by utilizing friction stir welding |
| CN106956074A (en) * | 2017-03-03 | 2017-07-18 | 中国人民解放军火箭军工程大学 | Friction stir welding method based on person of outstanding talent gram energy technology |
| CN107695511A (en) * | 2017-11-14 | 2018-02-16 | 哈尔滨工业大学（威海） | A kind of ultrasonic wave added dissimilar materials agitating friction lap device and bridging method |
| CN111421221A (en) * | 2020-05-07 | 2020-07-17 | 铜陵学院 | Friction stir butt welding device and machining method thereof |
| CN111421221B (en) * | 2020-05-07 | 2023-11-24 | 铜陵学院 | Friction stir butt welding device and processing method thereof |
| CN112427799A (en) * | 2020-11-16 | 2021-03-02 | 中国电子科技集团公司第十四研究所 | Friction stir welding manufacturing method of large-size high-thickness aluminum alloy panel |
| CN113134675A (en) * | 2021-03-16 | 2021-07-20 | 哈尔滨工业大学 | Friction stir welding method and system based on ultrasonic detection |
| CN113134675B (en) * | 2021-03-16 | 2022-09-23 | 哈尔滨工业大学 | Friction stir welding method and system based on ultrasonic detection |
| CN113894406A (en) * | 2021-11-30 | 2022-01-07 | 中车洛阳机车有限公司 | Double-vibration-source ultrasonic friction stir welding processing system and welding method thereof |
| CN114769878A (en) * | 2022-06-20 | 2022-07-22 | 中山大学 | Double-side reciprocating sound field auxiliary laser welding device and method |
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Application publication date: 20140702 |