WO2014119493A1 - 溶接缶胴、溶接缶、溶接缶胴の製造方法、及び溶接缶の製造方法 - Google Patents
溶接缶胴、溶接缶、溶接缶胴の製造方法、及び溶接缶の製造方法 Download PDFInfo
- Publication number
- WO2014119493A1 WO2014119493A1 PCT/JP2014/051584 JP2014051584W WO2014119493A1 WO 2014119493 A1 WO2014119493 A1 WO 2014119493A1 JP 2014051584 W JP2014051584 W JP 2014051584W WO 2014119493 A1 WO2014119493 A1 WO 2014119493A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- welding
- steel plate
- welded
- laser
- laser irradiation
- Prior art date
Links
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
- B23K11/00—Resistance welding; Severing by resistance heating
- B23K11/08—Seam welding not restricted to one of the preceding subgroups
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
- B65D1/00—Containers having bodies formed in one piece, e.g. by casting metallic material, by moulding plastics, by blowing vitreous material, by throwing ceramic material, by moulding pulped fibrous material, by deep-drawing operations performed on sheet material
- B65D1/12—Cans, casks, barrels, or drums
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D51/00—Making hollow objects
- B21D51/16—Making hollow objects characterised by the use of the objects
- B21D51/26—Making hollow objects characterised by the use of the objects cans or tins; Closing same in a permanent manner
-
- 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
- B23K11/00—Resistance welding; Severing by resistance heating
- B23K11/002—Resistance welding; Severing by resistance heating specially adapted for particular articles or work
- B23K11/0026—Welding of thin articles
-
- 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
- B23K11/00—Resistance welding; Severing by resistance heating
- B23K11/06—Resistance welding; Severing by resistance heating using roller electrodes
- B23K11/065—Resistance welding; Severing by resistance heating using roller electrodes for welding curved planar seams
- B23K11/066—Resistance welding; Severing by resistance heating using roller electrodes for welding curved planar seams of tube sections
-
- 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
- B23K11/00—Resistance welding; Severing by resistance heating
- B23K11/08—Seam welding not restricted to one of the preceding subgroups
- B23K11/093—Seam welding not restricted to one of the preceding subgroups for curved planar 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
- B23K11/00—Resistance welding; Severing by resistance heating
- B23K11/34—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
- B23K26/36—Removing material
- B23K26/361—Removing material for deburring or mechanical trimming
-
- 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
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
- B65D7/00—Containers having bodies formed by interconnecting or uniting two or more rigid, or substantially rigid, components made wholly or mainly of metal
- B65D7/12—Containers having bodies formed by interconnecting or uniting two or more rigid, or substantially rigid, components made wholly or mainly of metal characterised by wall construction or by connections between walls
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
- B65D7/00—Containers having bodies formed by interconnecting or uniting two or more rigid, or substantially rigid, components made wholly or mainly of metal
- B65D7/12—Containers having bodies formed by interconnecting or uniting two or more rigid, or substantially rigid, components made wholly or mainly of metal characterised by wall construction or by connections between walls
- B65D7/34—Containers having bodies formed by interconnecting or uniting two or more rigid, or substantially rigid, components made wholly or mainly of metal characterised by wall construction or by connections between walls with permanent connections between walls
- B65D7/38—Containers having bodies formed by interconnecting or uniting two or more rigid, or substantially rigid, components made wholly or mainly of metal characterised by wall construction or by connections between walls with permanent connections between walls formed by soldering, welding, or otherwise uniting opposed surfaces
-
- 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
- B23K2101/04—Tubular or hollow articles
- B23K2101/12—Vessels
- B23K2101/125—Cans
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
- B65D7/00—Containers having bodies formed by interconnecting or uniting two or more rigid, or substantially rigid, components made wholly or mainly of metal
- B65D7/02—Containers having bodies formed by interconnecting or uniting two or more rigid, or substantially rigid, components made wholly or mainly of metal characterised by shape
- B65D7/04—Containers having bodies formed by interconnecting or uniting two or more rigid, or substantially rigid, components made wholly or mainly of metal characterised by shape of curved cross-section, e.g. cans of circular or elliptical cross-section
- B65D7/045—Casks, barrels, or drums in their entirety, e.g. beer barrels, i.e. presenting most of the following features like rolling beads, double walls, reinforcing and supporting beads for end walls
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
- B65D7/00—Containers having bodies formed by interconnecting or uniting two or more rigid, or substantially rigid, components made wholly or mainly of metal
- B65D7/02—Containers having bodies formed by interconnecting or uniting two or more rigid, or substantially rigid, components made wholly or mainly of metal characterised by shape
- B65D7/06—Containers having bodies formed by interconnecting or uniting two or more rigid, or substantially rigid, components made wholly or mainly of metal characterised by shape of polygonal cross-section, e.g. tins, boxes
Definitions
- a chrome-plated steel plate or a material steel plate made of a chrome-plated steel plate and a resin-coated steel plate coated with a resin coating such as a laminate is joined by a welded portion by resistance welding, and an 18-liter can, a general can body, etc.
- the present invention relates to a welding can body, a welding can, a manufacturing method of a welding can body, and a manufacturing method of a welding can that can improve production efficiency in can manufacturing.
- a metal can body such as an 18 liter can or a general can body is formed by superimposing the welded portions of the material steel plates and welding them by a resistance welding method such as a seam welding method. It is manufactured by attaching a top plate (bottom plate) to the can body.
- Examples of the material steel plate that forms such a welding can include a cover plate, a chrome-plated steel plate (hereinafter referred to as a tin-free steel plate), a resin-coated steel plate in which a tin-free steel plate is coated with a resin coating, and the like. .
- tin-free steel sheets usually have chromium hydrated oxide formed on the surface of metallic chromium, the electrical resistance is high, and as it is, joining by resistance welding in which an electrode is brought into contact and energized is difficult. Therefore, for the purpose of making welding easier by lowering electrical resistance, removal of the chromium plating film by physical polishing of the welded part and improvement of the chromium plating film of the tin-free steel sheet are performed as pre-welding treatments. ing.
- polishing scraps may adhere to the can body and remain in the can body. It needs to be prevented. Special attention is required when the content to be filled in the can is food or the like.
- the chromium plating film is completely removed. Therefore, when a resin film is formed on the welded part by repair coating or repair laminate, a resin such as a repair coating film or repair laminate is used. Adhesion with the coating is reduced. As a result, the content easily penetrates into the welded part, and since the chrome plating film is not formed on the welded part, the corrosion resistance is low when the content penetrates into the welded part, which causes corrosion. There is.
- Patent Document 1 a technique for forming a low electric resistance of a chromium plating film of a tin-free steel sheet is disclosed (for example, refer to Patent Document 1). According to the technique described in Patent Document 1, since the electrical resistance of the tin-free steel plate is low, good weldability is ensured, and as a result, it is widely spread.
- a laser polishing method in which a chromium plating film on a planned welding portion of a tin-free steel plate is completely removed by irradiation with laser light as a pretreatment for welding (for example, , See Patent Document 2).
- Patent Document 1 Although the amount of hydrated chromium oxide is small and the electrical resistance is lowered and the weldability is improved, the corrosion resistance is lowered as compared with a general tin-free steel plate. For this reason, it is difficult to obtain a stable effect as a welding can in applications where sufficient corrosion resistance is required.
- a material steel plate made of a tin-free steel plate or a resin-coated steel plate coated with a resin coating such as a laminate is joined by resistance welding.
- welded cans such as liter cans and general cans
- (2) tin-free material that will be a material steel plate Improve the processing speed of laser processing as a pre-welding process for the pre-welding part of the steel plate, and (3) adhesion and residue of dust and debris in the pre-welding process for the pre-welding part of the tin-free steel plate that will be the material steel plate.
- the first aspect of the present invention is a tin-free steel plate or a material steel plate made of a resin-coated steel plate coated with a resin coating on a tin-free steel plate, the corresponding portions are overlapped with each other, and the overlapped portions are resistance welded
- a welding can body configured by forming a welded portion, wherein the planned welding portion planned for the welded portion in the material steel plate has an electrode contact surface on the side in contact with the electrode during the resistance welding.
- a laser is applied to at least one of the four surfaces comprising the two surfaces constituting the two surfaces constituting the joining surface on the side where the material steel plates are joined by the resistance welding.
- a laser processing portion is formed in which the laser irradiation portion where the chrome plating is removed and the steel plate is exposed is divided.
- a method for manufacturing a welded can body comprising forming a material steel plate made of a chrome-plated steel plate or a resin-coated steel plate coated with a resin coating on a chrome-plated steel plate, and forming the formed material steel plate.
- the laser welding is performed on the portion to be welded that constitutes the welded portion of the welding can body, the two surfaces constituting the electrode contact surface in contact with the electrode during the resistance welding, and the material steel plate by the resistance welding.
- Laser processing in which the laser irradiation part where the chrome plating is removed and the steel plate is exposed is divided and arranged on at least one of the four surfaces comprising the two surfaces that are to be joined to each other Forming welded portions of the formed steel sheets, and connecting the overlapped portions by resistance welding to form welded portions, thereby forming the welded can body.
- the third aspect of the present invention is a welding can formed by attaching one or both of the top plate and the bottom plate to the opening of the welding can body of the first aspect of the present invention.
- a welded can formed by attaching one or both of a top plate and a bottom plate to an opening of the welded can body in the method for manufacturing a welded can body of the second aspect of the present invention. It is a manufacturing method.
- the welded portion of the material steel plate made of a tin-free steel plate or a resin-coated steel plate is an electrode during resistance welding. At least one of the four surfaces comprising the two surfaces constituting the electrode contact surface on the side in contact with the surface and the two surfaces constituting the joint surface on the side where the material steel plates are joined by resistance welding.
- a laser processing portion is formed in which the laser irradiation portion where the chrome plating is removed and the steel plate is exposed is divided and arranged.
- a laser processing part can be processed at high speed by parting the laser irradiation part in a scheduled welding part.
- a resin-coated steel sheet refers to a steel sheet having a resin film formed on one or both sides of a tin-free steel sheet.
- the resin film include painting (coating, spraying, etc.), printing, vapor deposition, and the like.
- the resin film formed on the surface of the tin-free steel plate by the film forming means, and the resin film formed separately from the tin-free steel plate such as a laminate film are integrated on the surface of the tin-free steel plate.
- the resin includes materials that can be formed as a resin film, such as a polyester resin such as polypropylene resin (PP), polyethylene resin (PE), and polyethylene terephthalate (PET), and an epoxy resin.
- the laser irradiation portion refers to a portion where chromium plating coated on a tin-free steel plate (including a resin-coated steel plate) forming a material steel plate is removed by laser irradiation.
- a laser processing part means the welding plan part in which a laser irradiation part and a non-irradiation part are mixed.
- the laser irradiation part is divided and arranged, that the laser irradiation part is divided and arranged on a straight line extending in at least any direction on the surface of the material steel plate.
- a straight line constituted by a set of straight lines (including a set of straight lines arranged in parallel and a set arranged crossing each other (in this case, an area surrounded by the intersecting straight lines may be isolated))
- a form in which a gap is formed between the straight lines may be used, and it is not necessary to be configured as a set of dots divided in all directions.
- the adhesion amount of chromium in the said laser irradiation part shall be 5 mg / m ⁇ 2 > or less in conversion of metal chromium.
- the chromium plating is removed by laser irradiation, and the amount of chromium deposited in the laser irradiation portion is 5 mg / m 2 or less in terms of metal chromium.
- the electrical resistance at the contact portion can be lowered and the welding stability can be improved.
- the area occupied by the laser irradiation portion in the laser processing portion is 10% or more and 90% or less.
- the welding can body and the manufacturing method of the welding can body according to the present invention since the area of the laser irradiation portion is 10% or more and 90% or less in the laser processing portion of the welding portion, the weldability is improved. At the same time, when a resin film is formed on the welded portion by repair coating, repair laminate, or the like, the adhesion of the resin film such as the repair coating film or the repair laminate is improved, and as a result, the corrosion resistance can be improved.
- the laser processed portion is formed on two electrode contact surfaces among the four surfaces constituting the welded portion.
- the two electrode contact surfaces are laser processing parts
- the laser processing parts are formed on all surfaces (four surfaces) constituting the welding part. Compared with forming, the cost can be reduced.
- a weldable range hereinafter referred to as ACR
- ACR weldable range
- the material steel plate is formed by laser irradiation on at least one of the four surfaces constituting the welded portion. Since the laser-processed portion in which the laser irradiation portion where the chrome plating is removed and the steel plate is exposed is divided is formed, the overall resistance is lowered, and the weldability at the time of resistance welding can be improved. . Moreover, the laser treatment as the pre-welding process can be performed at a high speed by dividing the laser irradiation part in the planned welding part.
- the schematic shows an example of the process of forming a laser processing part in a material steel plate by laser irradiation.
- the inventors have intensively studied improvement of weldability in resistance welding of a welded portion of a steel plate made of a tin-free steel plate or a resin-coated steel plate coated with a resin coating such as a laminate. It is possible to increase the speed of removal of the chromium plating film by laser irradiation and improve the adhesion in the weld repair part or the laminate repair part, and consequently the corrosion resistance of the weld part by leaving the insulating film made of As a result, the present invention was completed. Hereinafter, each embodiment of the present invention will be described in detail.
- FIG. 1 is a diagram showing a schematic configuration of a can body according to the first embodiment of the present invention, and a symbol W0 is a square can such as an 18L square can (welded can), for example, a symbol W1. Indicates a welding can body, and reference numeral 11 indicates a welded portion of the welding can body.
- the rectangular can W0 includes, for example, a cylindrical can body W1, a top plate W11, and a bottom plate W12.
- the top plate W11 and the bottom plate W12 are welded can bodies W1. It is attached to the opening part of both ends.
- the top plate W11 is formed with a hole H1 for filling the inside of the rectangular can W0 or allowing the content to flow out.
- the can body W1 is joined by, for example, bending a formed material steel plate and overlapping corresponding edge portions, and resistance welding the overlapped portions to form a welded portion 11.
- FIGS. 2A to 2C are perspective views schematically showing the manufacturing process up to the can body W1 according to the first embodiment.
- the material steel plate M is irradiated with, for example, pulsed laser light from the laser irradiation devices L1 and L3 while flowing the material steel plate M in the direction of the arrow T1, thereby forming a laser processing portion.
- the laser irradiation apparatuses L2 and L4 in which the laser beam is indicated by a broken-line cone portion are as follows. Instead, laser irradiation apparatuses L1 and L3 in which laser light is indicated by solid line conical portions are used.
- the laser irradiation device L1 forms a laser processing part G1 formed on the front surface side in the drawing
- the laser irradiation device L3 forms a laser processing part G3 formed on the back surface side in the drawing.
- the material steel plate M is bent so that the laser processing part G1 and the laser processing part G3 face each other, and the edge part (corresponding part) of the formed material steel sheet M is to be joined.
- ) Are overlapped with each other to form a can body intermediate product W2 in a state in which the planned welding portion 12 constituting the welding portion 11 can be welded.
- the laser processed portion G is formed up to the end surface of the material steel plate M.
- the welding planned portion 12 is sandwiched between the electrode rollers A (A1, A2) and energized to seam weld (resistance welding) the planned welding portion 12.
- the welded portion 11 is formed and the planned welded portion 12 is joined.
- the can body W1 as shown in FIG. 2C is manufactured. Then, the square can W0 is manufactured by winding and attaching the top plate W11 and the bottom plate W12 to the can body W1.
- FIG. 3 is a cross-sectional view showing a schematic configuration of the material steel plate M according to the first embodiment.
- the material steel plate M is a tin-free steel plate generally used as a can material.
- the tin-free steel plate constituting the material steel plate M includes a steel plate M1, a chromium plating layer M2 applied to both surfaces of the steel plate M1, and a chromium hydrated oxide layer M3 formed on both surfaces of the chromium plating layer M2. It is configured with. With such a configuration, the tin-free steel sheet has a high electric resistance of the chromium plating film, and therefore physical polishing is performed as a pretreatment for resistance welding. However, in normal physical polishing, polishing powder and debris may adhere. is there.
- FIG. 4 is a diagram illustrating an outline of a laser irradiation process in the manufacturing process of the can body W according to the first embodiment.
- the laser irradiation device L1 and the laser irradiation device L4 are arranged to face each other.
- the laser irradiation devices L1, L2, L3, and L4 irradiate, for example, a pulsed laser beam to the welded portion 12 positioned at the edge of the material steel plate M that constitutes the welded portion 11, so that the material steel plate M Remove chrome plating.
- the laser processing portion G in which the laser irradiation portion where the steel plate M1 is exposed is distributed is formed.
- the laser processing part G shown in FIG. 4 shows the position of the laser processing part G notionally, and emphasizes the thickness direction for easy viewing.
- the laser irradiation devices L1 and L3 in which the laser beam is indicated by the solid cone portion are used instead of the laser irradiation devices L2 and L4 in which the laser beam is indicated by the broken cone portion.
- the laser processing parts G1 and G3 are formed on the corresponding edges by being overlapped while being positioned on opposite surfaces of the material steel plate M.
- FIG. 5 is a cross-sectional view illustrating a schematic configuration of a laser irradiation unit formed on the material steel plate M according to the first embodiment.
- the laser irradiation part is formed on only one surface.
- the laser irradiation section 13 is formed from the surface of the material steel plate M through the chromium plating layer M2 and the chromium hydrated oxide layer M3 until reaching the steel plate M1. Moreover, it is suitable for the adhesion amount of chromium in the laser irradiation part 13 that it is 5 mg / m ⁇ 2 > or less, for example.
- the area of the laser irradiation part 13 is 10% or more and 90% or less in the area of a welding part. Furthermore, it is more suitable if it is 20% or more and 50% or less.
- the area ratio of the laser irradiation part 13 in an arbitrary 1 mm ⁇ 1 mm area in the laser processing part G is set. A method such as viewing is effective.
- the steel plate M1 is exposed in a part of the material steel plate M, and the remaining portion is the chromium hydrated oxide layer M3, so that the electrical resistance is reduced in the laser irradiation unit 13 where the steel plate M1 is exposed.
- energization is facilitated and weldability is improved.
- the adhesion and corrosion resistance of the coating film and the like in the repair coating etc. are ensured well, and the resin such as the repair coating film and repair laminate in the welded portion.
- the adhesion of the coating is improved.
- the amount of laser energy required is significantly reduced compared to full-scale exfoliation by laser, so it is possible to form a laser-processed part at high speed and follow normal can-making speed, so it can be put to practical use. Becomes easy.
- the electric resistance of the welded part can be reduced uniformly and stable weldability can be ensured.
- FIG. 6A is a schematic diagram illustrating an example of the arrangement of the laser processed parts G (G1, G3) in the material steel plate M used in the can body W1 according to the first embodiment
- FIG. 3 is a diagram illustrating an example of a schematic configuration of a unit 13.
- the laser processing portion G1 is formed on one surface of the material steel plate M, and the laser processing portion is disposed on the other surface of the material steel plate M.
- G3 is formed. Both the laser processing part G1 and the laser processing part G3 are located in the site
- the arrangement of the laser irradiation unit 13 in the laser processing unit G includes, for example, a set 13X of a plurality of laser irradiation units 13 formed along the width direction of the laser processing unit G, and a laser.
- the laser irradiation unit 13 can be evenly arranged in a predetermined area of the welding unit 11 in the laser processing unit G. Further, portions other than the irradiation unit 13 can also be arranged equally.
- FIG. 7A is a diagram illustrating a state in which the welding planned portion 12 is resistance-welded in the manufacturing process of the weld can according to the first embodiment.
- the welding planned portion 12 of the can body intermediate product W2 is moved by the electrode rollers A1 and A2. It is a figure which shows the outline of the state which carries out seam welding.
- FIG. 7B is a figure which shows an example of arrangement
- the formed can body intermediate product W2 is moved along the longitudinal direction of the planned welding portion 12 and energized by being sandwiched between the electrode roller A1 and the electrode roller A2. By doing so, the welding part 11 is formed and an object part is connected.
- the laser processing portion G1 is disposed on the surface in contact with the electrode roller A1 when the laser processing portion G is disposed in the welding target portion 12 when the planned welding portion 12 is seam welded.
- the laser processing part G3 is arranged on the surface in contact with the electrode roller A2. Further, on the interface side where the steel plates M are in contact with each other, the chrome plating remains without the laser-processed portion G being disposed.
- FIG. 8A and FIG. 8B are diagrams illustrating a schematic configuration of an arrangement modification example of the laser irradiation unit 13 in the laser processing unit G of the material steel plate M used in the can body W1 according to the first embodiment.
- the longitudinal direction of the laser processed portion G is indicated by Y.
- FIG. 8A is a diagram illustrating a first modification of the first embodiment.
- the laser irradiation units 13 are arranged at equal intervals in the width direction (X direction) of the laser processing unit G, and the like in the X direction.
- the groups of the laser irradiation units 13 arranged at intervals are repeatedly arranged in the longitudinal direction (Y direction) of the laser processing unit G.
- interval of laser irradiation parts 13 is made into the substantially same dimension as the laser irradiation part 13 in a X direction and a Y direction.
- FIG. 8B is a diagram illustrating a second modification of the first embodiment.
- the laser irradiation units 13 are arranged at equal intervals in the width direction (X direction) of the laser processing unit G, and the like in the X direction.
- the groups of the laser irradiation units 13 arranged at intervals are repeatedly arranged in the longitudinal direction (Y direction) of the laser processing unit G by shifting the position in the X direction by a half pitch.
- interval of laser irradiation parts 13 is made into the substantially same dimension as the laser irradiation part 13 in a X direction and a Y direction.
- the laser processing parts G1 and G3 are formed on two surfaces constituting the electrode contact surface among the planned welding parts 12 of the material steel plate M.
- the contact resistance can be lowered, the planned welding portion 12 can be efficiently seam welded.
- the laser processing part G can be formed at high speed by dividing and arranging the laser irradiation part 13 in the planned welding part 12.
- the amount of chromium deposited on the laser irradiation unit 13 is 5 mg / m 2 or less in terms of metal chromium, so the planned welding part 12 Can be seam welded stably.
- the area of the laser irradiation unit 13 is, for example, 10% or more and 90% or less in an arbitrary 1 mm ⁇ 1 mm area in the welded part 11. It is said that.
- the weldability is improved, and a repaired coating film or a repaired laminate when repaired or repaired laminated on the welded part 11.
- the adhesion of the formed resin film can be improved, and as a result, the corrosion resistance can be improved.
- the area ratio is 20 to 50%, the ACR is wide, and the area for removing chromium can be made sufficiently small compared to the entire surface polishing (removing chromium over the entire surface of the laser processed portion).
- the laser processing portion G can be formed at a higher speed, Furthermore, it becomes suitable.
- the two electrode contact surfaces are the laser processed portions G, all surfaces (four surfaces) constituting the welded portion 11 are used. ), The cost can be reduced as compared with the case where the laser processed portion is formed.
- the splash means that the material steel plate M protrudes from the welded portion in a needle shape and adheres to the weld can or the weld can body.
- the laser processed portion is formed at the joint between the material steel plates M, the overall electrical resistance is reduced and the weldability is improved.
- heat generation at the portion where the electrode and the material steel plate M are in contact with each other The heat generation may be larger than the heat generation of the material steel plate M, and it is easy to melt on the electrode side of the material steel plate M. Therefore, it is considered effective to widen the ACR by forming a laser processed portion at the contact portion between the electrode and the material steel plate M to reduce the electrical resistance at the contact portion between the electrode and the material steel plate M.
- FIG. 9A is a schematic view showing a configuration of a laser irradiation part in a laser processing part G of a material steel plate used for a welding can body according to the second embodiment, and FIGS. 9B to 9D are modified examples of the second embodiment.
- FIG. 9A to 9D for example, the longitudinal direction Y and the width direction of the laser processing part G are indicated by X.
- the laser processing unit G includes a plurality of laser irradiation units 13 having a predetermined length in the Y direction and adjacent to each other in the X direction.
- a plurality of irradiation units 13 are arranged in the Y direction so as to be shifted from each other by a half pitch.
- the pulse laser or the continuous laser may be used for forming the laser processed portion G, and the length of the laser irradiation portion 13 can be arbitrarily set as required.
- a plurality of laser irradiation units 13 having a predetermined length in the Y direction are arranged in the X direction.
- a plurality of similar ones are arranged in the Y direction.
- the structure of the laser processing part G according to the second modification of the second embodiment is, for example, as shown in FIG. 9C, a laser formed continuously from the end to the end in the longitudinal direction of the laser processing part G.
- a plurality of irradiation units 13 are arranged at predetermined intervals in the X direction.
- the structure of the laser processing part G according to the third modification of the second embodiment is, for example, a laser formed continuously from end to end in the X direction of the laser processing part G as shown in FIG. 9D.
- a plurality of irradiation units 13 are arranged at predetermined intervals in the Y direction.
- FIG. 10 is a diagram illustrating a schematic configuration of the arrangement of the laser processed parts G in the material steel plate M when seam welding is performed on the planned welding part 12 in the manufacturing process of the welding can body according to the third embodiment.
- the third embodiment is different from the first embodiment in that, in the first embodiment, the laser processing parts G1 and G3 are formed on the two surfaces constituting the electrode contact surface in the planned welding part 12. In contrast, in the third embodiment, the laser processed portions G1 and G3 are formed on the two surfaces constituting the electrode contact surface.
- the laser processing parts G2 and G4 are formed also in the two surfaces which comprise the joint surface by the side of the interface where material steel plates M are joined, and four parts which comprise the welding part 11 are formed.
- a laser processing part G is formed on all the surfaces. Others are the same as those in the first embodiment, and a description thereof will be omitted.
- FIG. 11 is a cross-sectional view showing a schematic configuration of a material steel plate made of a laminated steel plate (resin-coated steel plate) MR according to the fourth embodiment.
- the fourth embodiment is different from the first embodiment in that a laminated steel plate MR is used as a material steel plate constituting the can body W1. Others are the same as those in the first embodiment, and a description thereof will be omitted.
- the laminated steel plate MR includes a steel plate M1, a chromium plating layer M2 applied to both surfaces of the steel plate M1, a chromium hydrated oxide layer M3 formed on both surfaces of the chromium plating layer M2, And a laminate film F formed on both side surfaces of the chromium hydrated oxide layer M3.
- the laminate film F is not covered with the planned welding portion 12 in this embodiment.
- the laminate film F is not described in detail, but various laminate films according to the contents can be applied, and also in the case of a laminate film having a plurality of layers having different functions. Applicable.
- FIG. 12 is a diagram showing a schematic configuration of a can body according to the fifth embodiment of the present invention.
- Reference numeral W10 denotes, for example, a cylindrical can (welding can) in which the outer periphery of a pail can or the like is formed in a cylindrical shape.
- W1A indicates a can body (welding can body), and 11A indicates a welded portion of the can body W1A and the welding can W1A.
- the cylindrical can W10 includes, for example, a cylindrical can body W1A, a top plate W11A, and a bottom plate W12A.
- the top plate W11A and the bottom plate W12A are at both ends of the can body W1A. It is attached to the opening.
- the top plate W11A is formed with a hole H1A for filling the contents inside the cylindrical can W10 or allowing the contents to flow out.
- the can body W1A is joined, for example, by bending a formed material steel plate and overlapping corresponding edge portions, and resistance welding the overlapped portions to form a welded portion 11A.
- FIGS. 13A to 13C are perspective views showing an outline of the manufacturing process up to the can body W1A according to the fifth embodiment.
- the material steel plate M is irradiated with, for example, pulsed laser light from the laser irradiation devices L1 and L3 while flowing the material steel plate M in the direction of the arrow T1, thereby forming a laser processing portion.
- the laser irradiation apparatuses L2 and L4 in which the laser light is indicated by a broken-line cone portion are provided.
- laser irradiation apparatuses L1 and L3 in which laser light is indicated by solid line conical portions are used.
- the laser irradiation device L1 forms a laser processing portion G1 formed on the front surface side in the drawing
- the laser irradiation device L3 forms a laser processing portion G3 formed on the back surface side in the drawing. .
- the material steel plate M is bent so that the laser processing part G1 and the laser processing part G3 face each other, and the edge part (corresponding part) of the formed material steel sheet M is to be joined.
- ) Are overlapped with each other to form a can body intermediate product W2A in a state in which the planned welding portion 12A constituting the welding portion 11A can be welded.
- the laser processed portion G is formed up to the end surface of the material steel plate M.
- the welding planned portion 12A is sandwiched between the electrode rollers A (A1, A2) and energized to seam weld (resistance welding) the planned welding portion 12A.
- the welded part 11A is formed and the welded part 12A is joined.
- a can body W1A as shown in FIG. 13C is manufactured. Then, the cylindrical can W10 is manufactured by winding and attaching the top plate W11A and the bottom plate W12A to the can body W1A.
- the rectangular can W0 and the cylindrical can W10 and the corresponding can barrels W1 and W1A have been described.
- the present invention may be applied to welding cans of other shapes and welding can bodies used for the welding cans.
- the laser processing portion G may be formed by continuously irradiating the laser. .
- the adhesion amount of chromium in a laser irradiation part was 5 mg / m ⁇ 2 > or less
- the adhesion amount of chromium is in the range which can be resistance-welded in a welding scheduled part. In order to improve the weldability, it is effective to reduce the adhesion amount of residual chromium.
- the area ratio of the laser irradiation part demonstrated the case where it was 10% or more and 90% or less in the area of 1 mm x 1 mm in a welding part
- the laser irradiation part in the welding part 11 was demonstrated.
- the area ratio 13 may be arbitrarily set within a range in which resistance welding can be performed on the planned welding portion 12. For example, in order to improve weldability, it is effective to increase the area ratio of the laser irradiation portion 13 in the planned welding portion 12.
- the laminate layer may have a plurality of layers.
- Table 1 is a table showing evaluation results regarding high-speed weldability, paint adhesion, corrosion resistance, and weldability, which were performed using Examples 1 to 13 and Comparative Examples 1 and 2 according to the present invention.
- Examples 1 to 13 and Comparative Examples 1 and 2 were prepared using tin-free steel plates in which a cold-rolled steel plate having a thickness of 0.32 mm and a tempering degree T4CA was plated with chromium.
- the area ratio (%) occupied by the laser irradiated part in the welded parts of Examples 1 to 13 and Comparative Examples 1 and 2, the arrangement of the laser processed parts (A, B, C) in the welded part, and the chromium adhesion in the laser irradiated part The amount (mg / m 2 ) is as shown in Table 1.
- FIG. 14 shows the laser processing part in four surfaces which comprise a welding part. The arrangement (presence or absence of formation) is shown.
- the non-adhesion part was provided continuously in the tape affixing part, and this was made into the tape end. Further, the tape applying part was sufficiently pressed from above so that the tape and the sample were sufficiently adhered.
- the sample produced by the above method was fixed, the end of the tape was held, and the tape was peeled off by pulling vigorously in the direction of 45 ° with respect to the sample plane. After peeling off the tape, the case where the coating was peeled off was rated as x, and the case where it was not peeled off was marked as ⁇ .
- a cylindrical cell with a lid of 50 mm ⁇ was prepared.
- a lid was attached to the cylindrical cell, and the lid was made into a cup shape with the bottom as the bottom, and was filled with the previously prepared corrosive solution.
- the sample was regarded as an upper lid, and the center of the marking surface was placed inside the center of the cell, and the cell was covered with a cell filled with a caustic solution, and was tied up so that the solution did not leak even if the cell and the sample were turned over.
- the sample was inverted so that it came to the lower side, charged in a thermostatic bath, and allowed to age for 4 days at 38 ° C. A sample after the lapse of time was taken out and the corrosion state was observed.
- the case where the corrosion is only in the marking portion is indicated by ⁇
- the case where the corrosion proceeds under the coating film is indicated by ⁇ .
- Examples 1 to 13 high-speed weldability, paint adhesion, corrosion resistance, and weldability are all good results.
- the weldability was particularly excellent ( ⁇ ).
- Examples 8 and 9 are the same conditions as Example 2 except that the laser-processed portion Cr adhesion amount is 3 mg / m 2 and 5 mg / m 2 , but the residual Cr adhesion amount is large. As a result, the weldability is ⁇ .
- Examples 10 to 12 have the same conditions as those of Examples 3 to 5 except that the target surface of the laser processing part is B (only one of the two electrode contact surfaces forms a laser processing part). However, since the laser-processed part is one side, the weldability is good.
- the area ratio of the laser irradiation part in the laser processing part is 100%, and the laser irradiation part is formed on two surfaces in contact with the electrode among the parts constituting the welding part. .
- the area ratio of the laser irradiated portion in the laser processed portion is 0%, and all the welded portions are laser non-irradiated portions and do not have a laser irradiated portion. Come off. As a result, the weldability is x.
- the amount of laser energy required per unit area is reduced compared to the entire surface peeling by laser, so if the amount of energy (output) per unit time of laser is constant, the laser processing part is formed at high speed. It becomes possible.
- the amount of residual chromium is 5 mg / m ⁇ 2 > or less in conversion of metal chromium, and the stable weldability is ensured.
- the present invention it is possible to improve the weldability at the time of resistance welding to a material steel plate, and therefore it can be used industrially.
- W0 square can (welded can) W10 Cylindrical can (welded can) W1, W1A Can body (welded can body) W11, W11A Top plate W12, W12A Bottom plate
- Material steel plate MR Laminated steel plate (material steel plate, resin-coated steel plate) M1 Steel plate M2 Chromium plating layer M3 Chromium hydrated oxide layer F Laminate film (resin coating) A, A1, A2 Electrode roller (electrode) G, G1, G2, G3, G4 Laser processing part 11 Welding part 12 Welding planned part 13 Laser irradiation part
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Plasma & Fusion (AREA)
- Ceramic Engineering (AREA)
- Laser Beam Processing (AREA)
Abstract
Description
本願は、2013年1月29日に、日本に出願された特願2013-014644号に基づき優先権を主張し、その内容をここに援用する。
そこで、電気抵抗を低くして溶接しやすくすることを目的として、溶接前処理として、溶接部を物理研磨することによるクロムめっき被膜の除去や、ティンフリー鋼板のクロムめっき被膜の改良等が行われている。
その結果、内容物が溶接部に浸透しやすくなり、しかも、溶接部にクロムめっき被膜が形成されていないので、内容物が溶接部に浸透した場合の耐食性が低く、腐食の要因となるという問題がある。
特許文献1に記載の技術によれば、ティンフリー鋼板の電気抵抗が低いので、良好な溶接性が確保され、その結果、一般にも広く普及している。
しかしながら、溶接部のめっき被膜を完全に除去するためには、溶接部全面にレーザーを高出力で照射する必要があり、1缶あたりの処理時間が長くなるうえに、レーザー研磨工程を製缶ラインに組み込むとライン速度の低下を招き生産性を阻害する。
このことが、レーザー研磨技術を実用化する上で大きなデメリットとなり、普及に至らない要因となっている。
本発明の第1の態様は、ティンフリー鋼板又はティンフリー鋼板に樹脂被膜が被覆された樹脂被覆鋼板からなる材料鋼板を成形し、対応する部位を互いに重ね合せて、重ね合せた部位を抵抗溶接して溶接部とすることで構成される溶接缶胴であって、前記材料鋼板において前記溶接部に予定される溶接予定部は、前記抵抗溶接の際に電極と接触する側の電極接触面を構成する二つの面と、前記抵抗溶接により前記材料鋼板同士が接合される側の接合面を構成する二つの面と、からなる四つの面のうち少なくとも一つの面に、前記抵抗溶接前にレーザー照射することにより、クロムめっきが除去され鋼板が露出するレーザー照射部が分断配置されたレーザー加工部が形成されている。
また、溶接予定部におけるレーザー照射部を分断することにより、レーザー加工部を高速で加工することができる。
また、樹脂としては、ポリプロピレン樹脂(PP)、ポリエチレン樹脂(PE)、ポリエチレンテレフタレート(PET)等のポリエステル樹脂、エポキシ樹脂等、樹脂被膜として形成可能な材質を含む。
また、レーザー加工部を、材料鋼板同士が接合される二つの接合面に形成する場合と比較して、抵抗溶接における溶接可能範囲(以下、ACRという)を広く確保することができ、溶接性が良好である。
また、溶接予定部におけるレーザー照射部を分断することにより、溶接前処理としてのレーザー処理を高速で実施することができる。
以下、図1から図8Bを参照して、この発明の第1の実施形態について説明する。
図1は、本発明の第1の実施形態に係る缶体の概略構成を示す図であり、符号W0は例えば、18L角缶(Square Can)(溶接缶)などの角形状缶を、符号W1は溶接缶胴を、符号11は溶接缶胴の溶接部を示している。
天板W11には、角形状缶W0の内部に内容物を充填し又は内容物を外部に流出させるための孔H1が形成されている。
また、缶胴W1は、例えば、成形した材料鋼板を湾曲して対応する辺の縁部同士を重ねて、重ね合せた部分を、抵抗溶接して溶接部11を形成して接合されている。
ここで、図2Aには、4基のレーザー照射装置L1、L2、L3、L4が設けられているが、この実施形態では、レーザー光を破線の円錐部で示したレーザー照射装置L2、L4は用いずに、レーザー光を実線の円錐部で示したレーザー照射装置L1、L3を用いている。
また、レーザー照射装置L1は、図において表面側に形成されるレーザー加工部G1を形成し、レーザー照射装置L3は、図において裏面側に形成されるレーザー加工部G3を形成する。
そして、形成した缶胴中間品W2を、矢印T2方向に移動させながら、溶接予定部12を電極ローラA(A1、A2)で挟み、通電して溶接予定部12をシーム溶接(抵抗溶接)することで溶接部11を形成して、溶接予定部12を接合する。
その後、缶胴W1に、天板W11及び底板W12を巻き締めて取付けることにより、角形状缶W0が製造される。
かかる構成により、ティンフリー鋼板は、クロムめっきの被膜の電気抵抗が高いので、抵抗溶接の前処理として、物理研磨が行われるが、通常の物理研磨では、研磨粉や屑が付着する可能性がある。
なお、図4に示したレーザー加工部Gは、レーザー加工部Gの位置を概念的に示すものであり、見やすくするために、厚さ方向を強調して表現している。
また、レーザー照射部13におけるクロムの付着量は、例えば、5mg/m2以下であることが好適である。
なお、溶接部11(溶接予定部12)のエリア内におけるレーザー照射部13の面積を測定する場合、例えば、レーザー加工部G内の任意の1mm×1mmのエリアにおけるレーザー照射部13の面積率をみる等の方法が有効である。
図6Aは、第1の実施形態に係る缶胴W1に用いる材料鋼板Mにおけるレーザー加工部G(G1、G3)の配置の一例を示す概略図であり、図6Bはレーザー加工部Gにおけるレーザー照射部13の概略構成の一例を示す図である。
レーザー加工部G1と、レーザー加工部G3は、ともに溶接部11を構成する部位に位置し、溶接予定部12を形成する。
かかる構成により、レーザー加工部G内の溶接部11の所定エリアに、レーザー照射部13を均等に配置することができる。また、照射部13以外の部分についても、均等に配置することが可能である。
図7Aは、第1の実施形態に係る溶接缶の製造工程において、溶接予定部12を抵抗溶接する状態を示す図であり、缶胴中間品W2の溶接予定部12を電極ローラA1、A2によりシーム溶接する状態の概略を示す図である。
また、図7Bは、第1の実施形態に係る溶接缶の製造工程において、溶接予定部12におけるレーザー加工部Gの配置の一例を示す図である。
また、材料鋼板M同士が接触する界面側は、それぞれレーザー加工部Gが配置されずにクロムめっきが残存している。
また、溶接予定部12におけるレーザー照射部13を分断配置することにより、レーザー加工部Gを高速で形成することができる。
その結果、レーザー加工部Gの単位面積あたりのレーザー出力を小さくすることが可能となり、単位時間当たりのレーザー出力が同じであっても、レーザー加工部Gをより高速に形成することができて、さらに好適となる。
したがって、電極と材料鋼板Mの接触部にレーザー加工部を形成して、電極と材料鋼板Mの接触部の電気抵抗を低下させることがACRを広くするうえで効果的であると考えられる。
以下、図9A~図9Dを参照して、この発明の第2の実施形態について説明する。
図9Aは、第2の実施形態に係る溶接缶胴に用いる材料鋼板のレーザー加工部Gにおけるレーザー照射部の構成を示す概略図であり、図9B~図9Dは第2の実施形態の変形例を説明する概略図である。図9A~図9Dにおいて、例えば、レーザー加工部Gの長手方向Y、幅方向をXで示している。
なお、レーザー加工部Gの形成には、パルスレーザー、連続レーザーのいずれを用いてもよく、レーザー照射部13の長さは、必要に応じて任意に設定することが可能である。
以下、図10を参照して、この発明の第3の実施形態について説明する。
図10は、第3の実施形態に係る溶接缶胴の製造工程において、溶接予定部12をシーム溶接する場合における、材料鋼板Mにおけるレーザー加工部Gの配置の概略構成を説明する図である。
以下、図11を参照して、この発明の第4の実施形態について説明する。
図11は、第4の実施形態に係るラミネート鋼板(樹脂被覆鋼板)MRからなる材料鋼板の概略構成を示す断面図である。
ラミネート鋼板MRは、図11に示すように、鋼板M1と、鋼板M1の両側表面に施されたクロムめっき層M2と、クロムめっき層M2の両側表面に生成したクロム水和酸化物層M3と、クロム水和酸化物層M3の両側表面に形成されたラミネートフィルムFとを備えている。また、ラミネートフィルムFは、この実施形態では、溶接予定部12には被覆されていない。なお、図11には、ラミネートフィルムFについては詳述していないが、内容物に応じた各種のラミネートフィルムが適用可能であり、また、機能の異なる複数の層を有するラミネートフィルムの場合にも適用可能である。
以下、図12、図13A~図13Cを参照して、この発明の第5の実施形態について説明する。
図12は、本発明の第5の実施形態に係る缶体の概略構成を示す図であり、符号W10は、例えば、ペール缶等の外周が円筒形状に形成された円筒形状缶(溶接缶)を、符号W1Aは缶胴(溶接缶胴)を、符号11Aは缶胴W1A及び溶接缶W1Aの溶接部を示している。
天板W11Aには、円筒形状缶W10の内部に内容物を充填し又は内容物を外部に流出させるための孔H1Aが形成されている。
また、缶胴W1Aは、例えば、成形した材料鋼板を湾曲して対応する辺の縁部同士を重ねて、重ね合せた部分を、抵抗溶接して溶接部11Aを形成して接合されている。
ここで、図13Aには、4基のレーザー照射装置L1、L2、L3、L4が設けられているが、この実施形態では、レーザー光を破線の円錐部で示したレーザー照射装置L2、L4を用いずに、レーザー光を実線の円錐部で示したレーザー照射装置L1、L3を用いている。
また、レーザー照射装置L1は、図において表面側に形成されるレーザー加工部G1を形成し、レーザー照射装置L3は、図において裏面側に形成されるレーザー加工部G3を形成するようになっている。
そして、形成した缶胴中間品W2Aを、矢印T2方向に流しながら、溶接予定部12Aを電極ローラA(A1、A2)で挟み、通電して溶接予定部12Aをシーム溶接(抵抗溶接)することで溶接部11Aを形成して、溶接予定部12Aを接合する。
その後、缶胴W1Aに、天板W11A及び底板W12Aを巻き締めて取付けることにより、円筒形状缶W10が製造される。
表1は、この発明に係る実施例1~実施例13及び比較例1、2を用いて行った、高速溶接性、塗料密着性、耐食性、溶接性に関する評価結果を示す表である。
なお、表1に示した、溶接部におけるレーザー加工部の配置(A、B、C)は、図14に示すとおりであり、図14は、溶接部を構成する4つの面におけるレーザー加工部の配置(形成の有無)を示している。
溶接性試験において、全面にレーザー照射し、かつレーザー照射部のCr付着量が1mg/m2以下となる場合を100%出力として比較した。同面積のレーザー加工部を形成する場合に必要な出力が90%を超える場合は不可(×)、50%超え90%以下の場合は可(○)、50%以下の場合は優(◎)とした。
レーザー加工部を形成した面にエポキシ系の塗料を塗布し、続いて220℃×10分の焼付けを行い5μm厚の塗装を施した。次に、塗装サンプルの塗装面に縦横2mm間隔の碁盤目状のケガキ線を施した。ケガキ線は十分に地鉄層まで到達する深さのものとした。
次に、塗装面のケガキ部にニチバン(登録商標)製セロハンテープ(LP24)を貼った。その際、コイル状のテープからテープを解きながらサンプルに貼り付けた。そして、テープ貼り付け部分に連続して非接着部を設け、これをテープ端とした。また、テープ貼り付け部は、テープとサンプルが十分密着するように上から十分押えた。
上記方法で作製したサンプルを固定し、テープ端を持ち、サンプル平面に対して45°方向に勢い良く引っ張ることで、テープ剥離を実施した。テープ剥離後、塗装が剥げたものは×、剥げなかったものを○とした。
レーザー加工部を形成したサンプルの両面にエポキシ系の塗料を塗布し、続いて220℃×10分の焼付けを行い、両面5μm厚の塗装を施した。次に、塗装サンプルを70mm×70mmの大きさに剪断し、レーザー加工部を形成した面側に2本の対角線状のケガキ線を施した。ケガキ線は十分に地鉄層まで到達する深さのものとした。
次に腐食液を調製した。腐食液は、塩化ナトリウムとクエン酸の混合水溶液で、塩化ナトリウム1.5wt%、クエン酸1.5wt%となるように調製した。
続いて50mmφの筒状の蓋つきセルを用意した。筒状のセルに蓋を装着し、蓋を底にしてコップ状にし、先に調製した腐食液を充填した。サンプルを上蓋に見立てて、ケガキ面の中央部がセルの中央内側に来るようにして、腐食液を充填したセルに被せ、セルとサンプルをひっくり返しても液が漏れないように個縛した。続いて、サンプルが下側に来るように反転させて、恒温槽に装入し、38℃×4日間経時させた。
経時後のサンプルを取り出し、腐食状態を観察した。腐食がケガキ部のみのものは○、腐食が塗装被膜下で進行しているものは×とした。
厚さ0.32mm、テンパー度T4CAの冷延鋼板にクロムめっきを施したティンフリー鋼板を用いて、溶接部に実施例及び比較例のレーザー加工部を形成し、続いて、シーム溶接法で溶接を行った。溶接電流が高すぎるとチリやスプラッシュを発生させ不良となり、一方溶接電流が低すぎると溶接の接合力が弱くなり不良となる。溶接接合力が充分得られ、かつチリやスプラッシュが発生しない範囲を溶接可能電流範囲(ACR)と呼ぶが、ACRが広いほど、溶接の安定性が高くなる。
そこで、溶接電流範囲が1A未満のものを×、1A以上3A未満のものを〇、3A以上のものを◎として、1A以上を合格とした。
(1)実施例1~13は、高速溶接性、塗料密着性、耐食性、溶接性の全てが良好な結果となる。
(2)実施例2~7は、溶接性が特に優れた結果(◎)となった。
(3)実施例8、9は、レーザー加工部Cr付着量が3mg/m2、5mg/m2であること以外は、実施例2と同様の条件であるが、残存Cr付着量が多いことにより溶接性が○となっている。
(4)実施例10~12は、レーザー加工部対象面がB(二つの電極接触面のうち、ひとつのみレーザー加工部を形成)であること以外は、実施例3~5と同条件であるが、レーザー加工部が片面であるので、溶接性が○となっている。
(5)比較例1は、レーザー加工部におけるレーザー照射部の面積率が100%となっており、溶接部を構成する部分のうち、電極と接する二つの面にレーザー照射部が形成されている。その結果、高速溶接性、塗料密着性、耐食性が劣る結果となっている。
(6)比較例2は、レーザー加工部におけるレーザー照射部の面積率0%であり、溶接部は全てレーザー非照射部となっており、レーザー照射部を持たない為、本特許の請求範囲から外れる。その結果、溶接性が×となっている。
W10 円筒形状缶(溶接缶)
W1、W1A 缶胴(溶接缶胴)
W11、W11A 天板
W12、W12A 底板
M 材料鋼板
MR ラミネート鋼板(材料鋼板、樹脂被覆鋼板)
M1 鋼板
M2 クロムめっきの層
M3 クロム水和酸化物の層
F ラミネートフィルム(樹脂被膜)
A、A1、A2 電極ローラ(電極)
G、G1、G2、G3、G4 レーザー加工部
11 溶接部
12 溶接予定部
13 レーザー照射部
Claims (10)
- ティンフリー鋼板又はティンフリー鋼板に樹脂被膜が被覆された樹脂被覆鋼板からなる材料鋼板を成形し、対応する部位を互いに重ね合せて、重ね合せた部位を抵抗溶接して溶接部とすることで構成される溶接缶胴であって、
前記材料鋼板において前記溶接部に予定される溶接予定部は、前記抵抗溶接の際に電極と接触する側の電極接触面を構成する二つの面と、前記抵抗溶接により前記材料鋼板同士が接合される側の接合面を構成する二つの面と、からなる四つの面のうち少なくとも一つの面に、前記抵抗溶接前にレーザー照射することにより、クロムめっきが除去され鋼板が露出するレーザー照射部が分断配置されたレーザー加工部が形成されている溶接缶胴。 - 前記レーザー照射部におけるクロムの付着量が金属クロム換算で5mg/m2以下である請求項1に記載の溶接缶胴。
- 前記レーザー加工部におけるレーザー照射部が占める面積が10%以上90%以下である請求項1又は請求項2に記載の溶接缶胴。
- 前記溶接部を構成する四つの面のうち、二つの前記電極接触面に前記レーザー加工部が形成されている請求項1~請求項3のいずれか1項に記載の溶接缶胴。
- 請求項1~請求項4のいずれか1項に記載の溶接缶胴の開口部に、天板と底板のいずれか一方又は双方を取付けて形成する溶接缶。
- クロムめっき鋼板又はクロムめっき鋼板の表面に樹脂被膜が被覆された樹脂被覆鋼板からなる材料鋼板を成形し、
前記成形された材料鋼板において前記溶接缶胴の溶接部を構成する溶接予定部にレーザー照射して、前記抵抗溶接の際に電極と接触する側の電極接触面を構成する二つの面と、前記抵抗溶接により前記材料鋼板同士が接合される側の接合面を構成する二つの面と、からなる四つの面のうち少なくとも一つの面に、クロムめっきが除去され鋼板が露出されたレーザー照射部が分断配置されたレーザー加工部を形成し、
前記成形された材料鋼板の溶接予定部を互いに重ね合せ、
前記重ね合せた部位を抵抗溶接して溶接部とすることで接続して、前記溶接缶胴を形成する溶接缶胴の製造方法。 - 前記レーザー照射部におけるクロムの付着量が金属クロム換算で5mg/m2以下であることを特徴とする請求項6に記載の溶接缶胴の製造方法。
- 前記レーザー照射部の面積は、前記溶接部のレーザー加工部において10%以上90%以下であることを特徴とする請求項6又は請求項7に記載の溶接缶胴の製造方法。
- 前記溶接部を構成する四つの面のうち、二つの前記電極接触面に前記レーザー加工部が形成されている請求項6~請求項8のいずれか1項に記載の溶接缶胴の製造方法。
- 溶接缶の製造方法であって、
請求項6~請求項9のいずれか1項に記載の溶接缶胴の製造方法により形成した溶接缶胴の開口部に、天板と底板のいずれか一方又は双方を取付けて溶接缶を形成する溶接缶の製造方法。
Priority Applications (8)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US14/761,971 US20150314908A1 (en) | 2013-01-29 | 2014-01-24 | Welded can body, welded can, method of manufacturing welded can body, and method of manufacturing welded can |
KR1020157020505A KR20150100925A (ko) | 2013-01-29 | 2014-01-24 | 용접 캔 동체, 용접 캔, 용접 캔 동체의 제조 방법, 및 용접 캔의 제조 방법 |
JP2014559658A JP6307447B2 (ja) | 2013-01-29 | 2014-01-24 | 溶接缶胴、溶接缶、溶接缶胴の製造方法、及び溶接缶の製造方法 |
CN201480005467.3A CN104936738B (zh) | 2013-01-29 | 2014-01-24 | 焊接罐体、焊接罐、焊接罐体的制造方法及焊接罐的制造方法 |
BR112015017569-4A BR112015017569B1 (pt) | 2013-01-29 | 2014-01-24 | Corpo de lata soldada, lata soldada, método para fabricar corpo de lata soldada e método para fabricar lata soldada |
MYPI2015702374A MY182087A (en) | 2013-01-29 | 2014-01-24 | Welded can body, welded can, method for manufacturing welded can body, and method for manufacturing welded can |
SG11201505518RA SG11201505518RA (en) | 2013-01-29 | 2014-01-24 | Welded can body, welded can, method for manufacturing welded can body, and method for manufacturing welded can |
SA515360822A SA515360822B1 (ar) | 2013-01-29 | 2015-07-28 | جسم علبة ملحومة, العلبة الملحومة, طريقة لتصنيع جسم العلبة الملحومة, وطريقة لتصنيع العلبة الملحومة |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2013014644 | 2013-01-29 | ||
JP2013-014644 | 2013-01-29 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2014119493A1 true WO2014119493A1 (ja) | 2014-08-07 |
Family
ID=51262208
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/JP2014/051584 WO2014119493A1 (ja) | 2013-01-29 | 2014-01-24 | 溶接缶胴、溶接缶、溶接缶胴の製造方法、及び溶接缶の製造方法 |
Country Status (10)
Country | Link |
---|---|
US (1) | US20150314908A1 (ja) |
JP (1) | JP6307447B2 (ja) |
KR (1) | KR20150100925A (ja) |
CN (1) | CN104936738B (ja) |
BR (1) | BR112015017569B1 (ja) |
MY (1) | MY182087A (ja) |
SA (1) | SA515360822B1 (ja) |
SG (1) | SG11201505518RA (ja) |
TW (1) | TWI547337B (ja) |
WO (1) | WO2014119493A1 (ja) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2023013676A1 (ja) * | 2021-08-03 | 2023-02-09 | 日本製鉄株式会社 | 構造部材の設計方法、鋼板の製造方法、テーラードブランクの製造方法、構造部材の製造方法、および構造部材 |
Families Citing this family (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20180051771A1 (en) * | 2015-03-26 | 2018-02-22 | Dana Automotive Systems Group, Llc | Laser welding of balance weights to driveshafts |
KR101719950B1 (ko) | 2016-01-07 | 2017-03-24 | 최연수 | 캔용기의 동체 제조장치 |
CN106270992A (zh) * | 2016-09-02 | 2017-01-04 | 广州亨龙智能装备股份有限公司 | 消防瓶电阻焊工艺 |
TWI632017B (zh) * | 2016-11-30 | 2018-08-11 | 統一實業股份有限公司 | Method for adjusting process of splicing surface contour curve with tinplate can welding line |
US20210035767A1 (en) * | 2019-07-29 | 2021-02-04 | Applied Materials, Inc. | Methods for repairing a recess of a chamber component |
KR20210077963A (ko) | 2019-12-18 | 2021-06-28 | 주식회사 엘지에너지솔루션 | 용접성을 향상시키는 전지의 동박 표면처리 방법 |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS6234682A (ja) * | 1985-08-09 | 1987-02-14 | Nippon Kokan Kk <Nkk> | 缶用素材の溶接方法 |
US6328197B1 (en) * | 1998-02-28 | 2001-12-11 | United States Can Company | Aerosol dispensing container and method for manufacturing same |
JP2002210562A (ja) * | 2001-01-19 | 2002-07-30 | Kawasaki Steel Corp | 薄クロムめっき鋼板のシーム溶接方法 |
Family Cites Families (24)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2040275A (en) * | 1934-03-07 | 1936-05-12 | Bossert Company Inc | Metal barrel |
JPS5638496A (en) * | 1979-09-05 | 1981-04-13 | Toyo Seikan Kaisha Ltd | Electrolytic chromic acid treated steel plate suitable in electric resistance welding |
JPS56150200A (en) * | 1980-04-22 | 1981-11-20 | Nippon Steel Corp | Preparation of resistance welded can from chromic acid treated steel plate |
JPS57202987A (en) * | 1981-06-05 | 1982-12-13 | Toyo Seikan Kaisha Ltd | Manufacture of welded can body |
JPS5847576A (ja) * | 1981-09-14 | 1983-03-19 | Kishimoto Akira | 溶接缶胴体の製造方法 |
JPS61130500A (ja) * | 1984-11-29 | 1986-06-18 | Kawasaki Steel Corp | Sn/Cr2層めつき鋼板の製造方法 |
JPS62263884A (ja) * | 1986-05-13 | 1987-11-16 | Nippon Kokan Kk <Nkk> | 缶用素材のレ−ザ研磨溶接装置 |
JPH02255282A (ja) * | 1989-03-28 | 1990-10-16 | Nippon Steel Corp | シーム溶接用ワイヤー及びシーム溶接方法 |
JP2595409B2 (ja) * | 1992-05-18 | 1997-04-02 | 新日本製鐵株式会社 | 圧延用ダルロールの製造方法 |
EP0658395B1 (de) * | 1993-12-15 | 2002-05-29 | Elpatronic Ag | Verfahren und Vorrichtung zum Verschweissen von Blechkanten |
GB9614754D0 (en) * | 1996-07-13 | 1996-09-04 | Metal Box Plc | Welding packaging containers |
JP2000296854A (ja) * | 1999-04-14 | 2000-10-24 | Nkk Corp | ラミネート缶体の製造方法 |
WO2004028734A1 (ja) * | 2002-09-26 | 2004-04-08 | Fine Process Company Ltd. | 異種金属のレーザロール接合方法およびレーザロール接合装置 |
JP2004306057A (ja) * | 2003-04-03 | 2004-11-04 | Nissan Motor Co Ltd | レーザ溶接装置 |
US7772518B2 (en) * | 2005-02-22 | 2010-08-10 | Rexam Beverage Can Company | Reinforced can end—can body joints with laser seaming |
EP1897759A1 (en) * | 2005-04-29 | 2008-03-12 | Autotech Engineering, A.I.E. | Bumper cross-member and production method thereof |
JP2006320907A (ja) * | 2005-05-17 | 2006-11-30 | Muneharu Kutsuna | 粉体および被膜を用いたマイクロレーザピーニング処理およびマイクロレーザピーニング処理部品 |
JP5488461B2 (ja) * | 2008-05-13 | 2014-05-14 | 旭硝子株式会社 | 酸化物層付き基体とその製造方法 |
KR101607964B1 (ko) * | 2009-07-15 | 2016-04-01 | 엘지디스플레이 주식회사 | 투명 디스플레이 장치 |
JP5524563B2 (ja) * | 2009-10-16 | 2014-06-18 | 北海製罐株式会社 | 溶接缶体 |
CN103080380B (zh) * | 2010-09-29 | 2014-06-18 | 新日铁住金株式会社 | 酸性液体用三片可再密封罐 |
US20120132629A1 (en) * | 2010-11-30 | 2012-05-31 | Electro Scientific Industries, Inc. | Method and apparatus for reducing taper of laser scribes |
EP2855070B1 (en) * | 2012-05-25 | 2019-12-11 | Shiloh Industries, Inc. | Sheet metal piece having weld notch and method of forming the same |
MX2015006795A (es) * | 2012-11-30 | 2015-08-14 | Shiloh Ind Inc | Metodo para formar una muesca de soldadura en una pieza de metal en hoja. |
-
2014
- 2014-01-24 WO PCT/JP2014/051584 patent/WO2014119493A1/ja active Application Filing
- 2014-01-24 KR KR1020157020505A patent/KR20150100925A/ko active Search and Examination
- 2014-01-24 CN CN201480005467.3A patent/CN104936738B/zh active Active
- 2014-01-24 BR BR112015017569-4A patent/BR112015017569B1/pt active IP Right Grant
- 2014-01-24 JP JP2014559658A patent/JP6307447B2/ja active Active
- 2014-01-24 US US14/761,971 patent/US20150314908A1/en not_active Abandoned
- 2014-01-24 MY MYPI2015702374A patent/MY182087A/en unknown
- 2014-01-24 SG SG11201505518RA patent/SG11201505518RA/en unknown
- 2014-01-27 TW TW103103009A patent/TWI547337B/zh active
-
2015
- 2015-07-28 SA SA515360822A patent/SA515360822B1/ar unknown
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS6234682A (ja) * | 1985-08-09 | 1987-02-14 | Nippon Kokan Kk <Nkk> | 缶用素材の溶接方法 |
US6328197B1 (en) * | 1998-02-28 | 2001-12-11 | United States Can Company | Aerosol dispensing container and method for manufacturing same |
JP2002210562A (ja) * | 2001-01-19 | 2002-07-30 | Kawasaki Steel Corp | 薄クロムめっき鋼板のシーム溶接方法 |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2023013676A1 (ja) * | 2021-08-03 | 2023-02-09 | 日本製鉄株式会社 | 構造部材の設計方法、鋼板の製造方法、テーラードブランクの製造方法、構造部材の製造方法、および構造部材 |
Also Published As
Publication number | Publication date |
---|---|
TWI547337B (zh) | 2016-09-01 |
JP6307447B2 (ja) | 2018-04-04 |
MY182087A (en) | 2021-01-18 |
TW201436915A (zh) | 2014-10-01 |
SG11201505518RA (en) | 2015-09-29 |
KR20150100925A (ko) | 2015-09-02 |
BR112015017569B1 (pt) | 2020-03-31 |
JPWO2014119493A1 (ja) | 2017-01-26 |
SA515360822B1 (ar) | 2021-10-13 |
US20150314908A1 (en) | 2015-11-05 |
CN104936738A (zh) | 2015-09-23 |
CN104936738B (zh) | 2018-12-18 |
BR112015017569A2 (pt) | 2017-07-11 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
JP6307447B2 (ja) | 溶接缶胴、溶接缶、溶接缶胴の製造方法、及び溶接缶の製造方法 | |
US9061787B2 (en) | Three-piece resealable can for acidic liquid | |
JP4818755B2 (ja) | 溶接缶用鋼板 | |
WO1997002137A1 (fr) | Materiau plaque | |
US11110539B2 (en) | Methods and joints for welding sheets of dissimilar materials | |
JP3212136B2 (ja) | 溶接缶胴を有する缶体 | |
JP2687799B2 (ja) | 溶接缶用ラミネート鋼板 | |
CA2842910C (en) | Three-piece resealable can | |
JPH09125259A (ja) | 溶接缶用表面処理鋼板 | |
JPH11106952A (ja) | 溶接性、耐食性、フィルム密着性に優れた溶接缶用鋼板 | |
JP2011117071A (ja) | 3ピースリシール缶 | |
JP2015093314A (ja) | 防錆鋼板の溶接方法 | |
JP3582443B2 (ja) | 無研磨溶接缶の缶胴用ラミネート鋼帯および缶胴の製造方法 | |
KR100261507B1 (ko) | 수지필름 피복 금속판의 제조방법 | |
JP3153001B2 (ja) | 溶接缶胴を有する缶体 | |
JP2910488B2 (ja) | 溶接缶用ラミネート鋼板 | |
JPH067948A (ja) | 缶胴の製造方法 | |
JPS632712B2 (ja) | ||
JPS6120396B2 (ja) | ||
JPH067947A (ja) | 缶胴の製造方法 | |
JPH061348A (ja) | 溶接缶胴を有する缶体 | |
JP2000296854A (ja) | ラミネート缶体の製造方法 | |
JPH0651358B2 (ja) | 溶接缶用ストライプ状熱可塑性樹脂被覆鋼板の製造方法 | |
JP2002172444A (ja) | ラミネート缶体の製造方法 | |
JPH05339749A (ja) | 溶接缶用クロムめっき鋼板およびその製造方法 |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
121 | Ep: the epo has been informed by wipo that ep was designated in this application |
Ref document number: 14746011 Country of ref document: EP Kind code of ref document: A1 |
|
ENP | Entry into the national phase |
Ref document number: 2014559658 Country of ref document: JP Kind code of ref document: A |
|
WWE | Wipo information: entry into national phase |
Ref document number: 14761971 Country of ref document: US |
|
ENP | Entry into the national phase |
Ref document number: 20157020505 Country of ref document: KR Kind code of ref document: A |
|
NENP | Non-entry into the national phase |
Ref country code: DE |
|
WWE | Wipo information: entry into national phase |
Ref document number: IDP00201504659 Country of ref document: ID |
|
REG | Reference to national code |
Ref country code: BR Ref legal event code: B01A Ref document number: 112015017569 Country of ref document: BR |
|
WWE | Wipo information: entry into national phase |
Ref document number: 15190012 Country of ref document: CO |
|
122 | Ep: pct application non-entry in european phase |
Ref document number: 14746011 Country of ref document: EP Kind code of ref document: A1 |
|
ENP | Entry into the national phase |
Ref document number: 112015017569 Country of ref document: BR Kind code of ref document: A2 Effective date: 20150723 |