US20240043071A1 - Method of producing a component by welding - Google Patents
Method of producing a component by welding Download PDFInfo
- Publication number
- US20240043071A1 US20240043071A1 US18/489,301 US202318489301A US2024043071A1 US 20240043071 A1 US20240043071 A1 US 20240043071A1 US 202318489301 A US202318489301 A US 202318489301A US 2024043071 A1 US2024043071 A1 US 2024043071A1
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- Prior art keywords
- junction
- weld
- junction part
- rigidity
- welding
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- 238000000034 method Methods 0.000 title claims abstract description 32
- 238000003466 welding Methods 0.000 title claims description 65
- 230000008878 coupling Effects 0.000 claims description 11
- 238000010168 coupling process Methods 0.000 claims description 11
- 238000005859 coupling reaction Methods 0.000 claims description 11
- 239000000463 material Substances 0.000 claims description 9
- 229910052751 metal Inorganic materials 0.000 claims description 3
- 239000002184 metal Substances 0.000 claims description 3
- 238000004519 manufacturing process Methods 0.000 claims 1
- 238000005219 brazing Methods 0.000 description 8
- 230000007547 defect Effects 0.000 description 7
- 230000008646 thermal stress Effects 0.000 description 5
- 230000001154 acute effect Effects 0.000 description 3
- 229910052782 aluminium Inorganic materials 0.000 description 3
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 3
- 239000011248 coating agent Substances 0.000 description 3
- 238000000576 coating method Methods 0.000 description 3
- 238000010422 painting Methods 0.000 description 3
- 230000008569 process Effects 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- 238000007792 addition Methods 0.000 description 1
- 239000011324 bead Substances 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- 150000002739 metals Chemical class 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 238000000275 quality assurance Methods 0.000 description 1
- 230000007480 spreading Effects 0.000 description 1
- 238000003892 spreading Methods 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 230000035882 stress Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Images
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
- B23K26/00—Working by laser beam, e.g. welding, cutting or boring
- B23K26/20—Bonding
- B23K26/21—Bonding by welding
- B23K26/24—Seam welding
- B23K26/244—Overlap seam welding
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
- B62D—MOTOR VEHICLES; TRAILERS
- B62D33/00—Superstructures for load-carrying vehicles
- B62D33/02—Platforms; Open load compartments
- B62D33/023—Sideboard or tailgate structures
-
- 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
- B23K1/00—Soldering, e.g. brazing, or unsoldering
- B23K1/005—Soldering by means of radiant energy
- B23K1/0056—Soldering by means of radiant energy soldering by means of beams, e.g. lasers, E.B.
-
- 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
-
- 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
- B23K26/242—Fillet welding, i.e. involving a weld of substantially triangular cross section joining two parts
-
- 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
- B23K3/00—Tools, devices, or special appurtenances for soldering, e.g. brazing, or unsoldering, not specially adapted for particular methods
- B23K3/08—Auxiliary devices therefor
-
- 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
- B23K33/00—Specially-profiled edge portions of workpieces for making soldering or welding connections; Filling the seams formed thereby
-
- 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
- B23K37/00—Auxiliary devices or processes, not specially adapted to a procedure covered by only one of the preceding main groups
- B23K37/06—Auxiliary devices or processes, not specially adapted to a procedure covered by only one of the preceding main groups for positioning the molten material, e.g. confining it to a desired area
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
- B62D—MOTOR VEHICLES; TRAILERS
- B62D25/00—Superstructure or monocoque structure sub-units; Parts or details thereof not otherwise provided for
- B62D25/06—Fixed roofs
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
- B62D—MOTOR VEHICLES; TRAILERS
- B62D29/00—Superstructures, understructures, or sub-units thereof, characterised by the material thereof
- B62D29/008—Superstructures, understructures, or sub-units thereof, characterised by the material thereof predominantly of light alloys, e.g. extruded
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
- B62D—MOTOR VEHICLES; TRAILERS
- B62D65/00—Designing, manufacturing, e.g. assembling, facilitating disassembly, or structurally modifying motor vehicles or trailers, not otherwise provided for
- B62D65/02—Joining sub-units or components to, or positioning sub-units or components with respect to, body shell or other sub-units or components
- B62D65/06—Joining sub-units or components to, or positioning sub-units or components with respect to, body shell or other sub-units or components the sub-units or components being doors, windows, openable roofs, lids, bonnets, or weather strips or seals therefor
-
- 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
- B23K2101/006—Vehicles
-
- 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
-
- 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
- B23K2103/08—Non-ferrous metals or alloys
- B23K2103/10—Aluminium or alloys thereof
Definitions
- the present invention relates to a component produced by welding and a method of producing the same.
- laser brazing welding may be used depending on welding quality assurance and exterior design needs.
- the present invention relates to a component produced by welding and a method of producing the same. Particular embodiments relate to preventing a defect of a welding area from occurring when producing by welding a plurality of panels having welding lines to be intersected with each other through laser brazing welding and the like.
- Embodiments of the present invention provide a component produced by welding, the component including a first part in which a first junction part is configured, a second part in which a second junction part and a cross junction part intersecting the second junction part are configured, the second junction part is coupled to the first part such that a part of the first junction part and the second junction part are overlapped, and preceding weld is performed for the second junction part and the first junction part, and a third part in which a third junction part is configured, a part of the third junction part is overlapped with an opposite part of the first junction part, a remaining part of the third junction part is overlapped with the cross junction part, and the first part and the second part are coupled to the third part by performing following weld for each of the overlapped parts, wherein a rigidity-reinforcing part is formed on the first part, the second part, or the third part adjacent to a point where the preceding weld and the following weld intersect each other.
- the preceding weld and the following weld may be laser welding.
- the first junction part, the second junction part and the cross junction part, and the third junction part may be respectively configured on a first flange, a second flange, and a third flange respectively formed along edges of the first part, the second part, and the third part.
- the first part, the second part, and the third part may be made of same or different metals.
- the second junction part and the cross junction part may be configured by dividing a section along an edge of the second part, whereby the second junction part and the cross junction part may intersect each other at a point where the second junction part and the cross junction part may meet each other.
- the rigidity-reinforcing part may be in a groove shape recessed to a certain depth.
- the rigidity-reinforcing part may be formed at a position between the second junction part and the cross junction part, the position being where the second junction part and the cross junction part may meet each other in the second part.
- the rigidity-reinforcing part may be formed at a position inclined toward the second junction part between the second junction part and the cross junction part.
- the rigidity-reinforcing part may be positioned to be inclined toward the second junction part from a point between the second junction part and the cross junction part, and may be in a groove shape recessed to a certain depth so as to be connected to the second junction part.
- the second junction part and the cross junction part may be spaced apart from each other at all points except points where the second junction part and the cross junction part may meet each other, and a plurality of rigidity-reinforcing parts may be formed at a certain interval between the second junction part and the cross junction part spaced apart from each other.
- a sealer may be filled in a recess of the rigidity-reinforcing part.
- the sealer may be connected to a pinhole formed at the point where the preceding weld and the following weld may intersect each other, and may be filled in the pinhole.
- the first part may be an upper panel of an outer panel assembly of a tailgate of a vehicle
- the third part may be a lower panel of the outer panel assembly of the tailgate
- the second part may be an extension panel disposed between the upper and lower panels of the outer panel assembly of the tailgate.
- both side ends thereof may be welded to each other, a central part therebetween may be spaced apart from each other, the second part may be disposed in the central part, and the preceding weld and the following weld may intersect each other at an acute angle at a point where the first part, the second part, and the third part may intersect each other.
- a method of producing a component of embodiments of the present invention may include forming a rigidity-reinforcing part on a first part, a second part, or a third part adjacent to a point where a preceding weld and a following weld may intersect each other, coupling the first part and the second part to each other by performing the preceding weld in a state of overlapping and pressurizing a part of a first junction part and a second junction part, and coupling the first part, the second part, and the third part to each other by pressurizing and performing the following weld while overlapping a part of a third junction part with an opposite part of the first junction part and overlapping a remaining part of the third junction part with a cross junction part.
- FIGS. 1 to 3 are views showing a first part, a second part, and a third part of a component produced by welding according to an exemplary embodiment of the present invention.
- FIG. 4 is a view showing a state in which a first part and a second part of a component produced by welding according to an exemplary embodiment of the present invention are coupled to each other.
- FIG. 5 is a cross-sectional view taken along line A-A of the component shown in FIG. 4 .
- FIG. 6 is a view showing a state in which all components produced by welding according to an exemplary embodiment of the present invention are coupled to each other.
- FIG. 7 is a cross-sectional view taken along line B-B of the component shown in FIG. 6 .
- FIG. 8 is a cross-sectional view taken along line C-C of the component shown in FIG. 6 .
- FIG. 9 is a cross-sectional view taken along line D-D of the component shown in FIG. 6 .
- FIG. 10 is an enlarged view of a portion of the second part at line A-A shown in FIG. 2 .
- FIGS. 1 to 3 are views showing a first part, a second part, and a third part of a component produced by welding according to an exemplary embodiment of the present invention.
- FIG. 4 is a view showing a state in which a first part and a second part of a component produced by welding according to an exemplary embodiment of the present invention are coupled to each other.
- FIG. 5 is a cross-sectional view taken along line A-A of the component shown in FIG. 4 .
- FIG. 6 is a view showing a state in which all components produced by welding according to an exemplary embodiment of the present invention are coupled to each other.
- FIG. 7 is a cross-sectional view taken along line B-B of the component shown in FIG. 6 .
- FIG. 8 is a cross-sectional view taken along line C-C of the component shown in FIG. 6 .
- FIG. 9 is a cross-sectional view taken along line D-D of the component shown in FIG. 6 .
- FIG. 10 is an enlarged view of a portion of the second part at line A-A shown in FIG. 2 .
- Embodiments of the present invention relates to a component produced by welding and a method of producing the same, which may prevent a defect of a welding area from occurring when producing by welding a plurality of panels having welding lines intersecting each other through laser brazing welding and the like.
- FIGS. 1 to 3 are views showing the first part 100 , the second part 300 and the third part 500 of the component produced by welding according to an exemplary embodiment of the present invention.
- the component produced by welding includes the first part 100 in which a first junction part 120 is configured, a second part 300 in which a second junction part 320 and a cross junction part 340 intersecting the second junction part 320 are configured, the first part 100 is coupled to the second part such that a part 122 of the first junction part and the second junction part 320 are overlapped, and a preceding weld W 1 is performed for the second junction part 320 and the first junction part 120 , and a third part 500 in which a third junction part 520 is configured, a part 524 of the third junction part 520 is overlapped with an opposite part 124 of the first junction part, a remaining part 522 of the third junction part 520 and the cross junction part 340 are overlapped, and the first part 100 and the second part 300 are coupled to each other by which a following weld W 2 is performed for
- an embodiment of the present invention is a case where three parts are put together to form a singular component assembly, and for example, the panels are joined together by welding.
- An exemplary embodiment to which the present invention may be applied is an outer panel assembly forming an outer surface of a tailgate of a vehicle, wherein the first part 100 is an upper panel of the outer panel assembly of the tailgate of the vehicle, the third part 500 is a lower panel of the outer panel assembly of the tailgate, and the second part 300 may be an extension panel disposed between the upper panel and lower panels of the outer panel assembly of the tailgate.
- the technical idea of the present invention is not only applied to the tailgate, but is applicable to a door panel or various exterior panels of a vehicle, and further, to various industrial components.
- the preceding weld W 1 and the following weld W 2 may be laser welding.
- laser brazing welding may be corresponded to the case above.
- thermal stress becomes excessive so that deformation occurs and a pinhole may be generated due to an excessive spring back phenomenon. Therefore, in order to solve this problem, embodiments of the present invention propose a structure for preventing the deformation and welding defects by providing more rigidity to a panel through change of the panel shape.
- FIG. 1 shows the first part 100 , and the first junction part 120 is configured at a lower end of the first part 100 as shown.
- FIG. 2 shows the second part 300 , and the second junction part 320 is configured at the upper end of the second part 300 , and the cross junction part 340 intersecting the second junction part 320 is configured at the lower end thereof.
- the second part 300 is coupled to the first part 100 such that a part 122 of the first junction part and the second junction part 320 are overlapped with each other. Then, the preceding weld W 1 is performed for the second junction part 320 and the first junction part 120 .
- FIG. 3 shows the third part 500 , and the third junction part 520 is configured in the third part 500 .
- a part 524 of the third junction part 520 and an opposite part 124 of the first junction part 120 are overlapped with each other, the remaining part 522 of the third junction part 520 and the cross junction part 340 are overlapped with each other, and the following weld W 2 is performed for each of the overlapped parts, whereby the first part 100 and the second part 300 are coupled to the third part 500 .
- the first part 100 , the second part 300 , and the third part 500 are coupled to each other by welding.
- the rigidity-reinforcing part 360 is formed in the first part 100 , the second part 300 , or the third part 500 adjacent to the point where the preceding weld W 1 and the following weld W 2 intersect each other.
- the rigidity-reinforcing part 360 is provided for imparting rigidity to a material in order to prevent the spring back phenomenon after welding of the material due to pressure applied during the welding, provided for preventing poor quality caused by the spring back due to the thermal stress after the welding, and also provided for overcoming a problem such as having a step difference generated by the spring back when performing the following weld W 2 .
- the rigidity-reinforcing part 360 may be utilized to fill the pinhole with a sealer and the like, so that a painted surface may be kept smooth when subsequent painting is performed.
- first junction part 120 , the second junction part 320 and the cross junction part 340 , and the third junction part 520 may be respectively configured at the first flange, the second flange, and the third flange respectively formed along the edges of the first part 100 , the second part 300 , and the third part 500 .
- the first flange, the second flange, and the third flange are formed into a surface shape having a predetermined area by bending the edge part of the panel.
- the first flange, the second flange, and the third flange are to play the roles of the first junction part 120 , the second junction part 320 and the cross junction part 340 , and the third junction part 520 , respectively.
- first part 100 , the second part 300 , and the third part 500 may be made of the same or different metal materials.
- the bonding is performed through laser welding or the like.
- Aluminum has a good flexible rate, but is also susceptible to breakage, and thus effective results may be obtained when embodiments of the present invention are applied.
- the second junction part 320 and the cross junction part 340 are configured by dividing a section along the edge of the second part 300 as shown in FIG. 2 , whereby the second junction part 320 and the cross junction part 340 may intersect each other at a point where the second junction part 320 and the cross junction part 340 meet each other.
- the illustrated exemplary embodiment is a case where the second junction part 320 and the cross junction part 340 configure points by meeting each other at both ends of the second part 300 .
- the rigidity-reinforcing part 360 may be in a groove shape recessed to a certain depth as shown in FIG. 10 .
- the rigidity-reinforcing part 360 may be formed at a point between the second junction part 320 and the cross junction part 340 , which is a point where the second junction part 320 and the cross junction part 340 meet each other in the second part 300 .
- the rigidity-reinforcing part 360 may be formed at a point inclined toward the second junction part 320 from a point between the second junction part 320 and the cross junction part 340 .
- the rigidity-reinforcing part 360 is positioned to be inclined toward the second junction part 320 from a point between the second junction part 320 and the cross junction part 340 , and may be in a groove shape recessed to a certain depth so as to be connected to the second junction part 320 .
- the sealer may be filled in the recess of the rigidity-reinforcing part 360 .
- the sealer is to be applied to a target part by using a sealer gun, but there is a problem in that the sealer gun does not reach a narrow point described as in embodiments of the present invention.
- control of applying a small amount of sealer is practically difficult, a certain amount of more sealer is inevitably applied.
- the groove may be filled by applying the sealer first to the recess of the rigidity-reinforcing part 360 , thereby preventing a defect on a coating surface.
- the pinhole may be filled and prevented by spreading some of the filled sealer to a side. Even when the pinhole or the like is generated, the sealer may be prevented at a point where the preceding weld W 1 and the following weld W 2 intersect each other.
- the second junction part 320 and the cross junction part 340 are spaced apart from each other at all points except points where the second junction part 320 and the cross junction part 340 meet each other, and a plurality of rigidity-reinforcing parts 360 and 360 ′ may be formed at a certain interval between the second junction part 320 and the cross junction part 340 spaced apart from each other.
- a method of producing the component includes forming a rigidity-reinforcing part 360 on the first part 100 , the second part 300 , or the third part 500 adjacent to a point where the preceding weld W 1 and the following weld W 2 intersect each other, coupling the first part 100 and the second part 300 to each other by performing the preceding weld W 1 in a state of overlapping and pressurizing a part 122 of the first junction part and the second junction part 320 , and coupling the first part 100 , the second part 300 , and the third part 500 to each other by pressurizing and performing the following weld W 2 while overlapping a part 524 of the third junction part with the opposite part 124 of the first junction part and overlapping the remaining part 522 of the third junction part with the cross junction part 340 .
- a method performs forming the rigidity-reinforcing part 360 disposed in the first part 100 , the second part 300 , or the third part 500 adjacent to the point where the preceding weld W 1 and the following weld W 2 intersect each other.
- the method performs coupling the first part 100 and the second part 300 to each other by the preceding weld W 1 in a state where the part 122 of the first junction part 120 and the second junction part 320 are overlapped and pressurized.
- the part 122 of the first junction part 120 and the second junction part 320 are overlapped with each other, and the two junction parts are tightly fitted by pressing up and down through a jig or the like.
- laser brazing welding is performed as shown in the cross section of FIG. 5 .
- a bond is made between the tailgate outer upper panel and the extension panel.
- the tailgate outer upper panel and the extension panel are coupled to each other at an angle of almost 90 degrees as shown in the drawings, thereby having excellent exterior design despite low formability.
- the part 524 of the third junction part 520 is overlapped with the opposite part 124 of the first junction part 120 , and the remaining part 522 of the third junction part 520 is overlapped with the cross junction part 340 .
- the assembly is completed.
- FIG. 7 is a cross-sectional view taken along the line B-B of the component shown in FIG. 6 .
- FIG. 8 is a cross-sectional view taken along the line C-C of the component shown in FIG. 6 .
- FIG. 9 is a cross-sectional view taken along the line D-D of the component shown in FIG. 6 .
- the following weld W 2 is performed in the state where the part 524 of the third junction part 520 and the remaining part 124 of the first junction part 120 are overlapped and pressurized as shown in FIG. 7 .
- the remaining part 522 of the third junction part 520 is pressurized while being overlapped with the cross junction part 340 and the following weld W 2 is performed as shown in FIG. 9 .
- Such following weld W 2 occurs continuously at one time as a single process. In this case, as shown in FIG. 8 , a point where the following weld W 2 and the preceding weld W 1 intersect each other is generated, and at this point, a quality problem such as having pinholes and the like may arise.
- embodiments of the present invention form the rigidity-reinforcing part 360 in the second part 300 in advance, as shown in FIG. 10 .
- the rigidity-reinforcing part 360 may be positioned to be inclined toward the second junction part 320 from a point between the second junction part 320 and the cross junction part 340 .
- the rigidity-reinforcing part 360 may be in a groove shape recessed to a certain depth to be connected to the second junction part 320 .
- the sealer may be filled in the recess of the rigidity-reinforcing part 360 .
- the sealer is capable of being filled in the pinhole when the pinhole is required to be filled up manually.
- the sealer is to be filled in the pinhole generated without the rigidity-reinforcing part 360 , the remains of the sealer may protrude convexly during the subsequent painting, which may cause a problem in the coating quality.
- FIG. 6 is a view showing a state in which all components produced by welding according to an exemplary embodiment of the present invention are coupled to each other.
- FIG. 1 is an enlarged view of a portion of the line A-A of the second part 300 shown in FIG. 2 .
- the first part 100 and the third part 500 both side ends thereof are welded to each other, a central part therebetween spaces the first part 100 and the third part 500 from each other, the second part 300 is disposed at the central part, and the preceding weld W 1 and the following weld W 2 intersect each other at an acute angle at the point where the first part 100 , the second part 300 , and the third part 500 intersect each other.
- the welded parts are configured to be close to each other.
- a great deal of stress is applied to the parts. Therefore, by securing the rigidity in advance through the forming of the rigidity-reinforcing part 360 , it is possible to assure the quality of welding and painting.
- the following weld W 2 may intersect across a point spaced apart with a certain distance from the end point of the preceding weld W 1 .
- a lifting phenomenon may occur when coupling the third part 500 due to the humped part of weld bead generated by the preceding weld W 1 . Accordingly, this problem may be solved by allowing the following weld W 2 to intersect across a point spaced apart with a certain distance from the end point W 1 ′ of the preceding weld W 1 .
- the component produced by welding and the method of producing the same may prevent a defect of a welding area from occurring when producing by welding a plurality of panels having welding lines intersecting each other through laser brazing welding and the like.
Abstract
An embodiment provides a method of producing a component. A rigidity-reinforcing part is formed on a first part, a second part, or a third part adjacent to a point where a preceding weld and a following weld intersect each other. The first part and the second part are coupled to each other by performing the preceding weld in a state of overlapping and a part of a first junction part and a second junction part are pressurized. After performing the preceding weld, the first part, the second part, and the third part are coupled to each other by pressurizing and performing a following weld while overlapping a part of a third junction part with an opposite part of the first junction part and overlapping a remaining part of the third junction part with a cross junction part.
Description
- This application is a division of U.S. application Ser. No. 16/931,647, filed on Jul. 17, 2020, which claims priority to Korean Patent Application No. 10-2019-0171618, filed on Dec. 20, 2019, which applications are hereby incorporated herein by reference.
- The present invention relates to a component produced by welding and a method of producing the same.
- When welding panels of steel or aluminum, or panels made of different materials from each other, laser brazing welding may be used depending on welding quality assurance and exterior design needs.
- However, in a case of laser brazing welding, since a thin panel is to be used, it is difficult to secure rigidity of the panel material itself. Also, there is a possibility of deformation by external force clamping the thin panel for welding. Since the two panels are pressurized against each other, spring back may occur after welding. In particular, when welding lines of three or more panels are welded by being intersected with each other, two or more welding lines intersect each other. Due to the overlapping of the welding at the intersection point, thermal stress becomes excessive, and thus there is a problem in that the deformation occurs at the welding position of the panel, and a pinhole is generated when the thermal stress is severe.
- In order to solve this problem, it is necessary to avoid welding parts being overlapped. However, in this case, there is a problem in that realization of a design for a desired product becomes difficult. Thus, there is a requirement for a technology capable of preventing welding defects while securing the design of a product as desired.
- The foregoing is intended merely to aid in the understanding of the background of the present invention, and is not intended to mean that the present invention falls within the purview of the related art that is already known to those skilled in the art.
- The present invention relates to a component produced by welding and a method of producing the same. Particular embodiments relate to preventing a defect of a welding area from occurring when producing by welding a plurality of panels having welding lines to be intersected with each other through laser brazing welding and the like.
- Embodiments of the present invention provide a component produced by welding, the component including a first part in which a first junction part is configured, a second part in which a second junction part and a cross junction part intersecting the second junction part are configured, the second junction part is coupled to the first part such that a part of the first junction part and the second junction part are overlapped, and preceding weld is performed for the second junction part and the first junction part, and a third part in which a third junction part is configured, a part of the third junction part is overlapped with an opposite part of the first junction part, a remaining part of the third junction part is overlapped with the cross junction part, and the first part and the second part are coupled to the third part by performing following weld for each of the overlapped parts, wherein a rigidity-reinforcing part is formed on the first part, the second part, or the third part adjacent to a point where the preceding weld and the following weld intersect each other.
- The preceding weld and the following weld may be laser welding.
- The first junction part, the second junction part and the cross junction part, and the third junction part may be respectively configured on a first flange, a second flange, and a third flange respectively formed along edges of the first part, the second part, and the third part.
- The first part, the second part, and the third part may be made of same or different metals.
- The second junction part and the cross junction part may be configured by dividing a section along an edge of the second part, whereby the second junction part and the cross junction part may intersect each other at a point where the second junction part and the cross junction part may meet each other.
- The rigidity-reinforcing part may be in a groove shape recessed to a certain depth.
- The rigidity-reinforcing part may be formed at a position between the second junction part and the cross junction part, the position being where the second junction part and the cross junction part may meet each other in the second part.
- The rigidity-reinforcing part may be formed at a position inclined toward the second junction part between the second junction part and the cross junction part.
- The rigidity-reinforcing part may be positioned to be inclined toward the second junction part from a point between the second junction part and the cross junction part, and may be in a groove shape recessed to a certain depth so as to be connected to the second junction part.
- In the second part, the second junction part and the cross junction part may be spaced apart from each other at all points except points where the second junction part and the cross junction part may meet each other, and a plurality of rigidity-reinforcing parts may be formed at a certain interval between the second junction part and the cross junction part spaced apart from each other.
- A sealer may be filled in a recess of the rigidity-reinforcing part.
- The sealer may be connected to a pinhole formed at the point where the preceding weld and the following weld may intersect each other, and may be filled in the pinhole.
- The first part may be an upper panel of an outer panel assembly of a tailgate of a vehicle, the third part may be a lower panel of the outer panel assembly of the tailgate, and the second part may be an extension panel disposed between the upper and lower panels of the outer panel assembly of the tailgate.
- In the first part and the third part, both side ends thereof may be welded to each other, a central part therebetween may be spaced apart from each other, the second part may be disposed in the central part, and the preceding weld and the following weld may intersect each other at an acute angle at a point where the first part, the second part, and the third part may intersect each other.
- A method of producing a component of embodiments of the present invention may include forming a rigidity-reinforcing part on a first part, a second part, or a third part adjacent to a point where a preceding weld and a following weld may intersect each other, coupling the first part and the second part to each other by performing the preceding weld in a state of overlapping and pressurizing a part of a first junction part and a second junction part, and coupling the first part, the second part, and the third part to each other by pressurizing and performing the following weld while overlapping a part of a third junction part with an opposite part of the first junction part and overlapping a remaining part of the third junction part with a cross junction part.
- According to the component produced by welding and the method of producing the same of embodiments of the present invention, it is possible to prevent a defect of a welding area from occurring when producing by welding a plurality of panels having welding lines intersecting each other through laser brazing welding and the like.
-
FIGS. 1 to 3 are views showing a first part, a second part, and a third part of a component produced by welding according to an exemplary embodiment of the present invention. -
FIG. 4 is a view showing a state in which a first part and a second part of a component produced by welding according to an exemplary embodiment of the present invention are coupled to each other. -
FIG. 5 is a cross-sectional view taken along line A-A of the component shown inFIG. 4 . -
FIG. 6 is a view showing a state in which all components produced by welding according to an exemplary embodiment of the present invention are coupled to each other. -
FIG. 7 is a cross-sectional view taken along line B-B of the component shown inFIG. 6 . -
FIG. 8 is a cross-sectional view taken along line C-C of the component shown inFIG. 6 . -
FIG. 9 is a cross-sectional view taken along line D-D of the component shown inFIG. 6 . -
FIG. 10 is an enlarged view of a portion of the second part at line A-A shown inFIG. 2 . -
FIGS. 1 to 3 are views showing a first part, a second part, and a third part of a component produced by welding according to an exemplary embodiment of the present invention.FIG. 4 is a view showing a state in which a first part and a second part of a component produced by welding according to an exemplary embodiment of the present invention are coupled to each other.FIG. 5 is a cross-sectional view taken along line A-A of the component shown inFIG. 4 .FIG. 6 is a view showing a state in which all components produced by welding according to an exemplary embodiment of the present invention are coupled to each other.FIG. 7 is a cross-sectional view taken along line B-B of the component shown inFIG. 6 .FIG. 8 is a cross-sectional view taken along line C-C of the component shown inFIG. 6 .FIG. 9 is a cross-sectional view taken along line D-D of the component shown inFIG. 6 .FIG. 10 is an enlarged view of a portion of the second part at line A-A shown inFIG. 2 . - Embodiments of the present invention relates to a component produced by welding and a method of producing the same, which may prevent a defect of a welding area from occurring when producing by welding a plurality of panels having welding lines intersecting each other through laser brazing welding and the like.
-
FIGS. 1 to 3 are views showing thefirst part 100, thesecond part 300 and thethird part 500 of the component produced by welding according to an exemplary embodiment of the present invention. The component produced by welding includes thefirst part 100 in which afirst junction part 120 is configured, asecond part 300 in which asecond junction part 320 and across junction part 340 intersecting thesecond junction part 320 are configured, thefirst part 100 is coupled to the second part such that apart 122 of the first junction part and thesecond junction part 320 are overlapped, and a preceding weld W1 is performed for thesecond junction part 320 and thefirst junction part 120, and athird part 500 in which athird junction part 520 is configured, apart 524 of thethird junction part 520 is overlapped with anopposite part 124 of the first junction part, aremaining part 522 of thethird junction part 520 and thecross junction part 340 are overlapped, and thefirst part 100 and thesecond part 300 are coupled to each other by which a following weld W2 is performed for each of the overlapped parts, wherein a rigidity-reinforcingpart 360 is formed in thefirst part 100, thesecond part 300, or thethird part 500 adjacent to a point where the preceding weld W1 and the following weld W2 intersect each other. - Particularly, an embodiment of the present invention is a case where three parts are put together to form a singular component assembly, and for example, the panels are joined together by welding.
- An exemplary embodiment to which the present invention may be applied is an outer panel assembly forming an outer surface of a tailgate of a vehicle, wherein the
first part 100 is an upper panel of the outer panel assembly of the tailgate of the vehicle, thethird part 500 is a lower panel of the outer panel assembly of the tailgate, and thesecond part 300 may be an extension panel disposed between the upper panel and lower panels of the outer panel assembly of the tailgate. However, the technical idea of the present invention is not only applied to the tailgate, but is applicable to a door panel or various exterior panels of a vehicle, and further, to various industrial components. - In embodiments of the present invention, since a thin panel is to be used, it is difficult to secure rigidity of the panel material itself, and thus there is a possibility of having deformation by external force clamping the thin panel for welding. In addition, in embodiments of the present invention, the preceding weld W1 and the following weld W2 may be laser welding. In detail, laser brazing welding may be corresponded to the case above. In this case, when the welding lines intersect each other at WC, thermal stress becomes excessive so that deformation occurs and a pinhole may be generated due to an excessive spring back phenomenon. Therefore, in order to solve this problem, embodiments of the present invention propose a structure for preventing the deformation and welding defects by providing more rigidity to a panel through change of the panel shape.
- Particularly,
FIG. 1 shows thefirst part 100, and thefirst junction part 120 is configured at a lower end of thefirst part 100 as shown.FIG. 2 shows thesecond part 300, and thesecond junction part 320 is configured at the upper end of thesecond part 300, and thecross junction part 340 intersecting thesecond junction part 320 is configured at the lower end thereof. As shown inFIG. 4 , thesecond part 300 is coupled to thefirst part 100 such that apart 122 of the first junction part and thesecond junction part 320 are overlapped with each other. Then, the preceding weld W1 is performed for thesecond junction part 320 and thefirst junction part 120. -
FIG. 3 shows thethird part 500, and thethird junction part 520 is configured in thethird part 500. As shown inFIG. 6 , apart 524 of thethird junction part 520 and anopposite part 124 of thefirst junction part 120 are overlapped with each other, the remainingpart 522 of thethird junction part 520 and thecross junction part 340 are overlapped with each other, and the following weld W2 is performed for each of the overlapped parts, whereby thefirst part 100 and thesecond part 300 are coupled to thethird part 500. Through this process, thefirst part 100, thesecond part 300, and thethird part 500 are coupled to each other by welding. - In this case, there is no problem when welding lines are not crossed with each other. However, at the point WC where the preceding weld W1 and the following weld W2 intersect each other, the deformation and thermal stress of the material due to clamping are excessive, so that the breakage of the material or a pinhole may occur due to the spring back phenomenon. Accordingly, the rigidity-reinforcing
part 360 is formed in thefirst part 100, thesecond part 300, or thethird part 500 adjacent to the point where the preceding weld W1 and the following weld W2 intersect each other. - The rigidity-reinforcing
part 360 is provided for imparting rigidity to a material in order to prevent the spring back phenomenon after welding of the material due to pressure applied during the welding, provided for preventing poor quality caused by the spring back due to the thermal stress after the welding, and also provided for overcoming a problem such as having a step difference generated by the spring back when performing the following weld W2. In particular, in the case when the pinhole is generated, the rigidity-reinforcingpart 360 may be utilized to fill the pinhole with a sealer and the like, so that a painted surface may be kept smooth when subsequent painting is performed. - Particularly, the
first junction part 120, thesecond junction part 320 and thecross junction part 340, and thethird junction part 520 may be respectively configured at the first flange, the second flange, and the third flange respectively formed along the edges of thefirst part 100, thesecond part 300, and thethird part 500. The first flange, the second flange, and the third flange are formed into a surface shape having a predetermined area by bending the edge part of the panel. Also, the first flange, the second flange, and the third flange are to play the roles of thefirst junction part 120, thesecond junction part 320 and thecross junction part 340, and thethird junction part 520, respectively. - In addition, the
first part 100, thesecond part 300, and thethird part 500 may be made of the same or different metal materials. Particularly, in the case of aluminum, the bonding is performed through laser welding or the like. Aluminum has a good flexible rate, but is also susceptible to breakage, and thus effective results may be obtained when embodiments of the present invention are applied. - Meanwhile, the
second junction part 320 and thecross junction part 340 are configured by dividing a section along the edge of thesecond part 300 as shown inFIG. 2 , whereby thesecond junction part 320 and thecross junction part 340 may intersect each other at a point where thesecond junction part 320 and thecross junction part 340 meet each other. The illustrated exemplary embodiment is a case where thesecond junction part 320 and thecross junction part 340 configure points by meeting each other at both ends of thesecond part 300. - In addition, the rigidity-reinforcing
part 360 may be in a groove shape recessed to a certain depth as shown inFIG. 10 . The rigidity-reinforcingpart 360 may be formed at a point between thesecond junction part 320 and thecross junction part 340, which is a point where thesecond junction part 320 and thecross junction part 340 meet each other in thesecond part 300. In particular, as shown in the drawings, the rigidity-reinforcingpart 360 may be formed at a point inclined toward thesecond junction part 320 from a point between thesecond junction part 320 and thecross junction part 340. - Particularly, the rigidity-reinforcing
part 360 is positioned to be inclined toward thesecond junction part 320 from a point between thesecond junction part 320 and thecross junction part 340, and may be in a groove shape recessed to a certain depth so as to be connected to thesecond junction part 320. In addition, the sealer may be filled in the recess of the rigidity-reinforcingpart 360. In the case of the sealer, the sealer is to be applied to a target part by using a sealer gun, but there is a problem in that the sealer gun does not reach a narrow point described as in embodiments of the present invention. In addition, since control of applying a small amount of sealer is practically difficult, a certain amount of more sealer is inevitably applied. Due to this problem, a phenomenon occurs, where a sealer is applied to any area other than a desired area like a pinhole, thereby causing a problem in that the subsequent coating becomes poor in quality. In the case of embodiments of the present invention, even when slightly excessive sealer is applied, the groove may be filled by applying the sealer first to the recess of the rigidity-reinforcingpart 360, thereby preventing a defect on a coating surface. Also, even when a pinhole is generated, the pinhole may be filled and prevented by spreading some of the filled sealer to a side. Even when the pinhole or the like is generated, the sealer may be prevented at a point where the preceding weld W1 and the following weld W2 intersect each other. - Meanwhile, in the
second part 300, thesecond junction part 320 and thecross junction part 340 are spaced apart from each other at all points except points where thesecond junction part 320 and thecross junction part 340 meet each other, and a plurality of rigidity-reinforcingparts second junction part 320 and thecross junction part 340 spaced apart from each other. - Particularly, a method of producing the component includes forming a rigidity-reinforcing
part 360 on thefirst part 100, thesecond part 300, or thethird part 500 adjacent to a point where the preceding weld W1 and the following weld W2 intersect each other, coupling thefirst part 100 and thesecond part 300 to each other by performing the preceding weld W1 in a state of overlapping and pressurizing apart 122 of the first junction part and thesecond junction part 320, and coupling thefirst part 100, thesecond part 300, and thethird part 500 to each other by pressurizing and performing the following weld W2 while overlapping apart 524 of the third junction part with theopposite part 124 of the first junction part and overlapping the remainingpart 522 of the third junction part with thecross junction part 340. - First, as shown in
FIG. 10 , a method performs forming the rigidity-reinforcingpart 360 disposed in thefirst part 100, thesecond part 300, or thethird part 500 adjacent to the point where the preceding weld W1 and the following weld W2 intersect each other. - In addition, as shown in
FIG. 4 , the method performs coupling thefirst part 100 and thesecond part 300 to each other by the preceding weld W1 in a state where thepart 122 of thefirst junction part 120 and thesecond junction part 320 are overlapped and pressurized. In this step, thepart 122 of thefirst junction part 120 and thesecond junction part 320 are overlapped with each other, and the two junction parts are tightly fitted by pressing up and down through a jig or the like. In this state, laser brazing welding is performed as shown in the cross section ofFIG. 5 . Through this method, a bond is made between the tailgate outer upper panel and the extension panel. In addition, the tailgate outer upper panel and the extension panel are coupled to each other at an angle of almost 90 degrees as shown in the drawings, thereby having excellent exterior design despite low formability. - In addition, as shown in
FIG. 6 , thepart 524 of thethird junction part 520 is overlapped with theopposite part 124 of thefirst junction part 120, and the remainingpart 522 of thethird junction part 520 is overlapped with thecross junction part 340. In this state, by pressurizing the overlapped parts and performing the following weld W2, coupling of thefirst part 100, thesecond part 300, and thethird part 500 is performed, and thus the assembly is completed. -
FIG. 7 is a cross-sectional view taken along the line B-B of the component shown inFIG. 6 .FIG. 8 is a cross-sectional view taken along the line C-C of the component shown inFIG. 6 .FIG. 9 is a cross-sectional view taken along the line D-D of the component shown inFIG. 6 . - As such, the following weld W2 is performed in the state where the
part 524 of thethird junction part 520 and the remainingpart 124 of thefirst junction part 120 are overlapped and pressurized as shown inFIG. 7 . In addition, the remainingpart 522 of thethird junction part 520 is pressurized while being overlapped with thecross junction part 340 and the following weld W2 is performed as shown inFIG. 9 . Such following weld W2 occurs continuously at one time as a single process. In this case, as shown inFIG. 8 , a point where the following weld W2 and the preceding weld W1 intersect each other is generated, and at this point, a quality problem such as having pinholes and the like may arise. - In order to solve this problem, embodiments of the present invention form the rigidity-reinforcing
part 360 in thesecond part 300 in advance, as shown inFIG. 10 . The rigidity-reinforcingpart 360 may be positioned to be inclined toward thesecond junction part 320 from a point between thesecond junction part 320 and thecross junction part 340. Particularly, the rigidity-reinforcingpart 360 may be in a groove shape recessed to a certain depth to be connected to thesecond junction part 320. In addition, the sealer may be filled in the recess of the rigidity-reinforcingpart 360. Even when a pinhole is formed at the point WC where the preceding weld W1 and the following weld W2 intersect each other, the sealer is capable of being filled in the pinhole when the pinhole is required to be filled up manually. In a case when the sealer is to be filled in the pinhole generated without the rigidity-reinforcingpart 360, the remains of the sealer may protrude convexly during the subsequent painting, which may cause a problem in the coating quality. - Particularly,
FIG. 6 is a view showing a state in which all components produced by welding according to an exemplary embodiment of the present invention are coupled to each other.FIG. 1 is an enlarged view of a portion of the line A-A of thesecond part 300 shown inFIG. 2 . As such, in thefirst part 100 and thethird part 500, both side ends thereof are welded to each other, a central part therebetween spaces thefirst part 100 and thethird part 500 from each other, thesecond part 300 is disposed at the central part, and the preceding weld W1 and the following weld W2 intersect each other at an acute angle at the point where thefirst part 100, thesecond part 300, and thethird part 500 intersect each other. As described above, in the case of a point forming the acute angle, the welded parts are configured to be close to each other. Thus, based on the intersecting point WC, a great deal of stress is applied to the parts. Therefore, by securing the rigidity in advance through the forming of the rigidity-reinforcingpart 360, it is possible to assure the quality of welding and painting. - In addition, the following weld W2 may intersect across a point spaced apart with a certain distance from the end point of the preceding weld W1. When the following weld W2 intersects at the end point of the preceding weld W1, a lifting phenomenon may occur when coupling the
third part 500 due to the humped part of weld bead generated by the preceding weld W1. Accordingly, this problem may be solved by allowing the following weld W2 to intersect across a point spaced apart with a certain distance from the end point W1′ of the preceding weld W1. - According to embodiments of the present invention, the component produced by welding and the method of producing the same may prevent a defect of a welding area from occurring when producing by welding a plurality of panels having welding lines intersecting each other through laser brazing welding and the like.
- Although preferred embodiments of the present invention have been described for illustrative purposes, those skilled in the art will appreciate that various modifications, additions and substitutions are possible, without departing from the technical scope and spirit of the invention as disclosed in the accompanying claims.
Claims (17)
1. A method of producing a component, the method comprising:
forming a rigidity-reinforcing part on a first part, a second part, or a third part adjacent to a point where a preceding weld and a following weld intersect each other;
coupling the first part and the second part to each other by performing the preceding weld in a state of overlapping and pressurizing a part of a first junction part and a second junction part; and
after performing the preceding weld, coupling the first part, the second part, and the third part to each other by pressurizing and performing a following weld while overlapping a part of a third junction part with an opposite part of the first junction part and overlapping a remaining part of the third junction part with a cross junction part.
2. The method of claim 1 , wherein performing the preceding weld comprises laser welding.
3. The method of claim 1 , wherein performing the following weld comprises laser welding.
4. The method of claim 1 , wherein performing the preceding weld comprises laser welding and wherein performing the following weld comprises laser welding.
5. The method of claim 1 , wherein the rigidity-reinforcing part is in a groove shape recessed to a certain depth.
6. The method of claim 5 , further comprising filling a recess of the rigidity-reinforcing part with a sealer.
7. The method of claim 6 , wherein the sealer is connected to a pinhole formed at the point where the preceding weld and the following weld intersect each other.
8. The method of claim 7 , wherein the pinhole is filled with the sealer.
9. The method of claim 1 , wherein the rigidity-reinforcing part is formed at a position between the second junction part and the cross junction part, the position being where the second junction part and the cross junction part meet each other in the second part.
10. The method of claim 1 , wherein the first part, the second part, and the third part are each made of the same material.
11. The method of claim 1 , wherein one of the first part, the second part, or the third part is made of a different metal than others of the first part, the second part, and the third part.
12. A method of making a tailgate, the method comprising:
providing a first part that comprises an upper panel of an outer panel assembly;
providing a second part that comprises a lower panel of the outer panel assembly;
providing a third part that comprises an extension panel;
forming a rigidity-reinforcing part on the first part, the second part, or the third part adjacent to a point where a preceding weld and a following weld intersect each other;
coupling the first part and the second part to each other by performing the preceding weld in a state of overlapping and pressurizing a part of a first junction part and a second junction part; and
after performing the preceding weld, coupling the first part, the second part, and the third part to each other by pressurizing and performing a following weld while overlapping a part of a third junction part with an opposite part of the first junction part and overlapping a remaining part of the third junction part with a cross junction part.
13. The method of claim 12 , wherein performing the preceding weld comprises laser welding and wherein performing the following weld comprises laser welding.
14. The method of claim 12 , wherein the rigidity-reinforcing part is in a groove shape recessed to a certain depth, further comprising filling a recess of the rigidity-reinforcing part with a sealer.
15. The method of claim 14 , wherein the sealer is connected to a pinhole formed at the point where the preceding weld and the following weld intersect each other, wherein the pinhole is filled with the sealer.
16. The method of claim 12 , wherein the first part, the second part, and the third part are each made of the same material.
17. The method of claim 12 , wherein one of the first part, the second part, or the third part is made of a different metal than others of the first part, the second part, and the third part.
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US16/931,647 US11827282B2 (en) | 2019-12-20 | 2020-07-17 | Component produced by welding and method of producing same |
US18/489,301 US20240043071A1 (en) | 2019-12-20 | 2023-10-18 | Method of producing a component by welding |
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KR100812414B1 (en) | 2006-12-13 | 2008-03-10 | 현대자동차주식회사 | Roof welding structure in vehicle |
JP5206284B2 (en) * | 2008-09-30 | 2013-06-12 | マツダ株式会社 | Welded structure and welding method |
EP2617509B1 (en) * | 2010-09-16 | 2023-04-26 | Nippon Steel Corporation | Formed member and manufacturing method thereof |
US10328513B2 (en) * | 2013-05-31 | 2019-06-25 | General Electric Company | Welding process, welding system, and welded article |
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CN106392255A (en) * | 2016-10-31 | 2017-02-15 | 中车长春轨道客车股份有限公司 | Welding control process for vehicle body doorway stand column stress relief hole |
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