KR20110076443A - A hybrid welding system and method thereof - Google Patents
A hybrid welding system and method thereof Download PDFInfo
- Publication number
- KR20110076443A KR20110076443A KR1020090133148A KR20090133148A KR20110076443A KR 20110076443 A KR20110076443 A KR 20110076443A KR 1020090133148 A KR1020090133148 A KR 1020090133148A KR 20090133148 A KR20090133148 A KR 20090133148A KR 20110076443 A KR20110076443 A KR 20110076443A
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- KR
- South Korea
- Prior art keywords
- welding
- laser beam
- laser
- metal sheets
- dissimilar metal
- Prior art date
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Classifications
-
- 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
- B23K20/1245—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 characterised by the apparatus
- B23K20/125—Rotary tool drive mechanism
-
- 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
- B23K20/22—Non-electric welding by applying impact or other pressure, with or without the application of heat, e.g. cladding or plating taking account of the properties of the materials to be welded
- B23K20/227—Non-electric welding by applying impact or other pressure, with or without the application of heat, e.g. cladding or plating taking account of the properties of the materials to be welded with ferrous layer
- B23K20/2275—Non-electric welding by applying impact or other pressure, with or without the application of heat, e.g. cladding or plating taking account of the properties of the materials to be welded with ferrous layer the other layer being aluminium
-
- 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
- B23K20/24—Preliminary treatment
-
- 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
- B23K26/00—Working by laser beam, e.g. welding, cutting or boring
- B23K26/20—Bonding
- B23K26/21—Bonding by welding
- B23K26/24—Seam welding
- B23K26/26—Seam welding of rectilinear seams
-
- 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
- B23K26/00—Working by laser beam, e.g. welding, cutting or boring
- B23K26/20—Bonding
- B23K26/32—Bonding taking account of the properties of the material involved
- B23K26/323—Bonding taking account of the properties of the material involved involving parts made of dissimilar metallic material
-
- 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
- B23K2103/00—Materials to be soldered, welded or cut
- B23K2103/18—Dissimilar materials
- B23K2103/20—Ferrous alloys and aluminium or alloys thereof
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Plasma & Fusion (AREA)
- Laser Beam Processing (AREA)
Abstract
In the present invention, when the butt welding of dissimilar metal sheets having different plastic fluidity is performed, the mutual butt weld lines of the dissimilar metal sheets are thermally softened by irradiating a laser beam between conduction welding zones around the welds of the dissimilar metal sheets. Accordingly, the present invention provides a hybrid welding apparatus and a welding method thereof, by which frictional heat generated by rotation of a rotor having a rotating pin is used to form a joint by mutual stirring.
Laser Beam, Friction Stirring, Dissimilar Sheet, Hybrid Welding
Description
The present invention relates to a hybrid welding apparatus and a welding method thereof, and more particularly, in the butt welding of a dissimilar metal sheet having different plastic fluidity, the laser beam of the conduction welding zone is irradiated in advance around the welded portion of the metal sheet having low plastic fluidity. The present invention relates to a hybrid welding device and a welding method for forming a joint by mutual agitation by using frictional heat generated by rotation of a friction stir welding rotary pin along a butt weld line of dissimilar metal sheets in a thermally softened state.
Recently, in the industrial field, cutting, welding, and heat treatment of metal materials have been applied to laser beams having excellent effects in terms of cost reduction, factory automation, and quality improvement.
1 is a laser welding process diagram by a general laser welding system. The laser welding system for laser welding a material such as a metal sheet such as steel or aluminum alloy using the laser beam LB is an arm of the
However, laser welding as described above has difficulty in joining dissimilar metal sheets having different physical, chemical, and mechanical properties, such as steel and aluminum alloy, to each other, and even when welded, the welding strength of the weld portion is significantly reduced.
On the other hand, in the case of the aluminum or aluminum alloy plate, the yield stress is low, the plastic fluidity has a smooth characteristic, unlike the general steel plate, because of the difference in thermal conductivity and electrical conductivity to be welded at a fast time using a high current The application of spot welding technology is also not easy.
Accordingly, in the case of the aluminum sheet, a friction stir welding technique, which has been spotlighted as a joining technique for lightweight materials, is being used.
In other words, the friction stir welding technique is a technique in which a rotating pin is pressed onto a metal sheet to induce plastic flow due to frictional heat and mechanical force of the metal sheet and the rotating pin to join at a temperature below the melting point. In more detail, as shown in FIG. 2, while the
Then, the welding plate (W) is formed on the metal plate (10) by frictional heat of the rotary pin (23) by the rotation and contact pressure operation of the rotary pin (23), and is joined by softening and stirring. After the motor for stirring is stopped, the
However, the friction stir welding technique as described above also has a problem that it is difficult to apply to the butt joint between the steel plate and the aluminum alloy plate due to differences in yield stress and plastic fluidity.
Therefore, the present invention was invented to solve the technical problem of butt welding by various welding techniques of dissimilar metal sheets as described above, and the problem to be solved by the present invention is when butt welding of dissimilar metal sheets having different plastic fluidity. Heat-softened by irradiating the laser beam of the conduction welding zone around the welded part of the metal plate material with low plastic fluidity by using the frictional heat caused by the rotation of the rotor having the rotating pins along the butt weld lines of the dissimilar metal plate material. It is to provide a hybrid welding device and a welding method for forming a joint by mutual stirring.
Hybrid welding apparatus of the present invention for realizing the technical problem as described above for the butt welding of dissimilar metal sheet material,
A laser optic head mounted on a tip of a robot arm and connected to a laser oscillator and an optical fiber to irradiate a laser beam around the welded portion with respect to one of the different metal sheets, the laser optic head; Mounted to the tip of the robot arm corresponding to the rear of the laser optical head in the welding direction, and while rotating and pressing a rotor having a rotating pin along the butt weld line of the dissimilar metal plate, the agitator performs mutual stir welding using the frictional heat. And a friction stir unit.
The laser beam is characterized in that the laser beam between the conduction welding section that can be welded by heat conduction to the material in the non-focus section.
One metal plate member to which the laser beam is irradiated is characterized by being a metal plate member having a relatively low plastic flowability among different metal plate members.
The friction stir unit is a stirring motor which rotates in accordance with a control signal of a controller while being mounted on the front end of the robot arm through a bracket; It is mounted to the front end of the rotating shaft of the stirring motor, characterized in that consisting of a rotor for integrally forming the rotary pin at the center of rotation of the front end.
The hybrid welding method of the present invention for realizing the technical problem as described above is a laser beam of the conduction welding zone around the welded portion of one of the different metal sheet material, the low plastic fluidity of the different metal plate material for butt welding of the different metal plate material It is characterized in that the bonding by mutual stirring using the heat of friction by the rotation of the rotor having a rotary pin along the mutual butt weld line of the dissimilar metal sheet in a thermally softened state.
According to the hybrid welding apparatus and the welding method according to the present invention as described above, when the butt welding of the steel sheet material and the aluminum alloy sheet having different plastic fluidity, the laser beam of the conductive welding zone around the weld portion of the steel plate material having low plastic fluidity Weld welding of dissimilar metal sheets by mutually agitating by using frictional heat by rotation of a rotor having a rotating pin of a friction stir unit along a mutual butt weld line of two metal sheets in a thermally softened state by irradiation in advance. This is possible, there is an effect that can maintain the joint strength.
Hereinafter, the preferred configuration and operation of the present invention will be described in detail with reference to the accompanying drawings.
3 is a joining process diagram of a heterogeneous material to which a hybrid welding apparatus according to an embodiment of the present invention is applied, and FIG. 4 is a process conceptual diagram according to a hybrid welding method according to an embodiment of the present invention.
However, in describing the configuration of the present invention, the same components as those in the prior art will be described with the same reference numerals.
The hybrid welding apparatus according to the present embodiment is for joining through butt welding using a steel plate and an aluminum alloy plate as an example of different metal sheets having different physical, chemical, and mechanical properties, in particular, yield stress and plastic fluidity. As shown in FIG. 3, the laser
The layer
That is, the steel sheet P1 has a lower plastic fluidity and a higher yield stress than the aluminum alloy sheet P2, and by irradiating a laser beam LB to the steel sheet P1, Thermal softening of the weld portion facilitates plastic fluidity.
In addition, the
That is, the
In addition, a
Therefore, the hybrid welding method for the butt welding of the steel sheet material P1 and the aluminum alloy plate material P2, which is the dissimilar metal sheet material by the hybrid welding device having the above configuration, as shown in FIG. Among the plate materials, the laser beam LB of the conduction welding section T2 is irradiated around the welded portion of the steel sheet P1 having low plastic fluidity to thermally soften the welded portion of the steel sheet P1.
Here, the laser beam LB of the conductive welding section T2 irradiated to the steel plate P1 is a laser beam of a non-focused section in which welding can be performed by heat conduction with respect to the material, and the laser beam of the conductive welding section T2 is used. Prior to describing the beam LB, the focal section of the laser beam will be described. As shown in FIG. 5, the laser beam is integrated by a lens, so that energy multi-reflection and multi-absorption of the material occur within about 2 mm. The focal section is referred to as the keyhole contact section (T1), and a certain section in which the laser beam is welded by heat conduction to the material in a non-focus section out of the keyhole welding section (T1) is called the conduction welding section (T2). do.
The laser beam of the conduction welding section T2 occupies several times the laser beam area than the focal size of the keyhole welding section T1, and the density is much lower than the focusing position, but the laser beam LB is made of steel plate ( At the moment of impinging on the surface of P1), the yield stress is lowered to the inside of the metal to supply sufficient heat of conduction to thermally soften to facilitate plastic fluidity.
Subsequently, the
1 is a process diagram of a general laser welding system.
2 is a step-by-step bonding state diagram of a typical friction stir welding.
Figure 3 is a joining process of the heterogeneous material to which the hybrid welding device according to an embodiment of the present invention is applied.
4 is a process conceptual diagram according to the hybrid welding method according to an embodiment of the present invention.
5 is a conceptual diagram of a focus section of a general laser beam.
Claims (5)
Priority Applications (1)
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KR1020090133148A KR20110076443A (en) | 2009-12-29 | 2009-12-29 | A hybrid welding system and method thereof |
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KR1020090133148A KR20110076443A (en) | 2009-12-29 | 2009-12-29 | A hybrid welding system and method thereof |
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Cited By (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN103008897A (en) * | 2012-12-31 | 2013-04-03 | 中国科学院半导体研究所 | Composite welding method combining laser with friction stir welding |
KR101286681B1 (en) * | 2012-03-28 | 2013-07-16 | 주식회사 성우하이텍 | Method of friction spot joining |
KR20150072548A (en) | 2013-12-20 | 2015-06-30 | 서울대학교산학협력단 | Screening methods for preventing or treating circadian rhythm sleep disorders and time difference maladjustment |
CN105562954A (en) * | 2016-03-06 | 2016-05-11 | 南京理工大学 | Compound robot heat source welding system by double methods of friction stud and friction stir |
CN110023024A (en) * | 2016-11-22 | 2019-07-16 | 株式会社神户制钢所 | The manufacturing method of constructed of aluminium component |
CN111590224A (en) * | 2020-05-29 | 2020-08-28 | 广东工业大学 | System and method for preparing bulk amorphous alloy with assistance of laser |
CN112045309A (en) * | 2020-09-17 | 2020-12-08 | 福建阿石创新材料股份有限公司 | Preparation method of water path back plate for target |
KR20210079927A (en) * | 2019-12-20 | 2021-06-30 | 주식회사 성우하이텍 | Hybrid friction stir welding device |
-
2009
- 2009-12-29 KR KR1020090133148A patent/KR20110076443A/en not_active Application Discontinuation
Cited By (10)
Publication number | Priority date | Publication date | Assignee | Title |
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KR101286681B1 (en) * | 2012-03-28 | 2013-07-16 | 주식회사 성우하이텍 | Method of friction spot joining |
CN103008897A (en) * | 2012-12-31 | 2013-04-03 | 中国科学院半导体研究所 | Composite welding method combining laser with friction stir welding |
KR20150072548A (en) | 2013-12-20 | 2015-06-30 | 서울대학교산학협력단 | Screening methods for preventing or treating circadian rhythm sleep disorders and time difference maladjustment |
CN105562954A (en) * | 2016-03-06 | 2016-05-11 | 南京理工大学 | Compound robot heat source welding system by double methods of friction stud and friction stir |
CN105562954B (en) * | 2016-03-06 | 2018-11-13 | 南京理工大学 | Friction stub and friction-stir both sides' method robot hybrid laser-arc welding system |
CN110023024A (en) * | 2016-11-22 | 2019-07-16 | 株式会社神户制钢所 | The manufacturing method of constructed of aluminium component |
CN110023024B (en) * | 2016-11-22 | 2021-12-28 | 株式会社神户制钢所 | Method for manufacturing aluminum structural member |
KR20210079927A (en) * | 2019-12-20 | 2021-06-30 | 주식회사 성우하이텍 | Hybrid friction stir welding device |
CN111590224A (en) * | 2020-05-29 | 2020-08-28 | 广东工业大学 | System and method for preparing bulk amorphous alloy with assistance of laser |
CN112045309A (en) * | 2020-09-17 | 2020-12-08 | 福建阿石创新材料股份有限公司 | Preparation method of water path back plate for target |
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