JP2018187665A - Laser welding method and weld structure - Google Patents
Laser welding method and weld structure Download PDFInfo
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- 238000003466 welding Methods 0.000 title claims abstract description 52
- 238000000034 method Methods 0.000 title claims abstract description 28
- 239000002184 metal Substances 0.000 claims abstract description 12
- 238000002844 melting Methods 0.000 claims abstract description 6
- 230000008018 melting Effects 0.000 claims abstract description 6
- 230000001678 irradiating effect Effects 0.000 claims abstract description 4
- 239000000463 material Substances 0.000 abstract description 4
- 239000011324 bead Substances 0.000 abstract description 3
- 241000276425 Xiphophorus maculatus Species 0.000 abstract 1
- 210000001503 joint Anatomy 0.000 description 4
- 238000009864 tensile test Methods 0.000 description 2
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Abstract
Description
本発明は、一方の薄板状のワークの端面と、他方の薄板状のワークの端面とを、例えば直角な状態に突き合せてレーザ溶接を行うレーザ溶接方法及び上記レーザ溶接方法によって溶接を行った溶接構造体に関する。さらに詳細には、一方のワークと他方のワークとの溶接部の表面をＲ形状に形成し、前記溶接部の裏面を溶融することのないレーザ溶接方法及び溶接構造体に関する。 In the present invention, the end surface of one thin plate-like workpiece and the end surface of the other thin plate-like workpiece are brought into contact with each other at a right angle, for example, and laser welding is performed, and welding is performed by the laser welding method. The present invention relates to a welded structure. More specifically, the present invention relates to a laser welding method and a welded structure in which the surface of the welded portion between one workpiece and the other workpiece is formed in an R shape and the back surface of the welded portion is not melted.
従来、金属板を突き合せてレーザ溶接を行うことがある（例えば特許文献１参照）。 Conventionally, laser welding is sometimes performed by abutting metal plates (see, for example, Patent Document 1).
特許文献１には、厚い金属板と薄い金属板とを突き合せてレーザ溶接を行う構成が記載されている。ところで、薄い金属板のワークを突き合せてレーザ溶接を行う場合、図１（ａ）に示すように、ワークＷの端面を突き合せてレーザ溶接を行う突合せ継手、図１（ｂ）に示すように、ワークＷを重ね合せた端面のレーザ溶接を行うヘリ継手等がある。また、図１（ｃ）に示すＴ型貫通継手、図１（ｄ）に示すＴ型すみ肉継手、図１（ｅ）に示す重ね継手、図１（ｆ）に示す重ねすみ肉継手、図１（ｇ）に示すＬ字継手、図１（ｈ）に示すＬ字すみ肉継手などの種々の継手がある。 Patent Document 1 describes a configuration in which laser welding is performed by matching a thick metal plate and a thin metal plate. By the way, when laser welding is performed by abutting a thin metal plate workpiece, as shown in FIG. 1A, a butt joint that performs laser welding by abutting the end face of the workpiece W, as shown in FIG. 1B. In addition, there are helicopter joints that perform laser welding of the end faces on which the workpieces W are superimposed. 1 (c), T-type fillet joint shown in FIG. 1 (d), lap joint shown in FIG. 1 (e), lap fillet joint shown in FIG. 1 (f), FIG. There are various joints such as an L-shaped joint shown in FIG. 1 (g) and an L-shaped fillet joint shown in FIG. 1 (h).
ここで、ワークを溶接して箱体を構成する場合、前記継手としては、図１（ｇ），（ｈ）に示されたＬ字継手、Ｌ字すみ肉継手が採用可能である。しかし、図１（ｇ），（ｈ）に示した構成においては、ワークの鋭いエッジが残るものであり、好ましいものではない。 Here, when a work is welded to form a box, as the joint, an L-shaped joint or an L-shaped fillet joint shown in FIGS. 1 (g) and (h) can be employed. However, in the configuration shown in FIGS. 1G and 1H, a sharp edge of the work remains, which is not preferable.
そこで、箱体を展開した状態にワークを切断し、折曲げ加工してワークの端面を合せると、図１（ｉ）に示すように、ワークＷの端面は直角に交差することになる。この場合、ワークＷの端面の間の三角形状の部分に肉盛り溶接を行うことになる。ワークが薄い場合には、ワークの溶け落ちが生じたり、肉盛り部分とワーク表面との間に段差を生じることがある。すなわち、外観のよいレーザ溶接は難しいものである。 Therefore, when the work is cut in a state where the box is unfolded, bent, and the end faces of the work are aligned, the end faces of the work W intersect at right angles as shown in FIG. In this case, build-up welding is performed on a triangular portion between the end faces of the workpiece W. When the workpiece is thin, the workpiece may be melted down or a step may be formed between the build-up portion and the workpiece surface. That is, laser welding with a good appearance is difficult.
本発明は、前述のごとき問題に鑑みてなされたもので、一方の板状のワークの端面と他方の板状のワークの端面とを交差した状態に突き合せてレーザ溶接を行うレーザ溶接方法であって、
（ａ）一方のワークの端部における表面に面取り加工を行う工程、
（ｂ）他方のワークの端面を前記一方のワークの裏面に突合せ、前記一方のワークの端面と他方のワークの表面とがほぼ一致するように位置決めする工程、
（ｃ）前記一方のワークと他方のワークとの突合せ部分へレーザ光を照射して金属を溶融する工程、
（ｄ）前記金属溶融時の表面張力によって、前記一方のワークと他方のワークとの溶接部の表面をＲ形状に形成する工程、
を備えていることを特徴とするものである。
The present invention has been made in view of the above-described problems, and is a laser welding method in which laser welding is performed by butting the end surface of one plate-shaped workpiece and the end surface of the other plate-shaped workpiece so as to intersect each other. There,
(A) a step of chamfering the surface at the end of one workpiece;
(B) a step of abutting the end surface of the other workpiece with the back surface of the one workpiece and positioning the end surface of the one workpiece and the surface of the other workpiece to substantially coincide with each other;
(C) a step of irradiating a laser beam to a butt portion between the one workpiece and the other workpiece to melt the metal;
(D) forming a surface of a welded portion between the one workpiece and the other workpiece into an R shape by surface tension at the time of melting the metal;
It is characterized by having.
また、前記レーザ溶接方法において、前記一方のワークの裏面に対する他方のワークの端面の突合せは、一方のワークの裏面と他方のワークの裏面とが直角をなすように突き合せる。 In the laser welding method, the end surface of the other workpiece is abutted against the back surface of the one workpiece so that the back surface of the one workpiece and the back surface of the other workpiece are perpendicular to each other.
また、前記レーザ溶接方法において、前記レーザ光の照射方向は、一方のワークの端面付近を指向し、かつ一方のワークにおける裏面と他方のワークにおける裏面との交差位置付近を指向した方向である。 Further, in the laser welding method, the irradiation direction of the laser beam is directed to the vicinity of the end face of one work and the vicinity of the intersection position between the back face of one work and the back face of the other work.
また、前記レーザ溶接方法において、前記面取り加工は、一方のワークの板厚の５３％〜６７％の深さに行う。 In the laser welding method, the chamfering is performed at a depth of 53% to 67% of the plate thickness of one workpiece.
また、前記レーザ溶接方法において、前記一方のワークの裏面と他方のワークの裏面との交差位置は溶融されていない。 In the laser welding method, the intersection position between the back surface of the one workpiece and the back surface of the other workpiece is not melted.
また、一方の板状のワークの端面と他方の板状のワークの端面とを直角に突き合せた溶接構造体であって、一方のワークと他方のワークとの突き合せ溶接部の表面はＲ形状に形成してあり、前記溶接部の裏面は溶融されていないことを特徴とするものである。 Moreover, it is a welded structure in which the end surface of one plate-like workpiece and the end surface of the other plate-like workpiece are butted at right angles, and the surface of the butt weld portion between one workpiece and the other workpiece is R It is formed in a shape, and the back surface of the welded portion is not melted.
本発明によれば、ワークの端面の突き合せての位置決めが容易であると共に、溶接部の表面はＲ形状に形成されるものである。すなわち、鋭いエッジがない状態に溶接でき、安全性が向上すると共に、良好な外観となるものである。 According to the present invention, it is easy to position the end surfaces of the workpieces against each other, and the surface of the welded portion is formed in an R shape. That is, it can be welded in a state where there are no sharp edges, safety is improved, and a good appearance is obtained.
前述したように、例えば箱体を展開した状態に、例えば１ｍｍ〜２．５ｍｍ程度の薄い板状のワークを切断し、その後に折曲げ加工すると、図１（ｉ）に示すように、ワークを突き合せた端面の間には、三角形状の空間が生じる。この三角形状の部分は肉盛り溶接を行う必要がある。 As described above, for example, when a thin plate-shaped workpiece of about 1 mm to 2.5 mm, for example, is cut in a state in which the box is developed, and then bent, as shown in FIG. A triangular space is formed between the end faces that are abutted. It is necessary to perform overlay welding on the triangular portion.
そこで、図２（ａ）に示すように、一方のワークＷ１と他方のワークＷ２とを治具等（図示省略）によって直角に保持し、一方のワークＷ１の端部を、他方のワークＷ２の端面Ｆ２上に重ねて位置決めした。この場合、一方のワークＷ１の端面Ｆ１の位置が他方のワークＷ２の板厚ｔの約１／２ｔの位置となるように位置決めした。そして、焦点位置Ｆを、前記端面Ｆ１，Ｆ２の外方に（＋位置に）設定し、ワークＷ１，Ｗ２の表面Ｗ１Ａ，Ｗ２Ａ側の角部及び前記端面Ｆ１，Ｆ２を含む、状態にレーザ光ＬＢを照射した。この場合のレーザ光ＬＢの照射方向は、前記ワークＷ１，Ｗ２における裏面Ｗ１Ｂ，Ｗ２Ｂの交差位置Ｃを指向するように照射した。 Therefore, as shown in FIG. 2A, one work W1 and the other work W2 are held at right angles by a jig or the like (not shown), and the end of one work W1 is attached to the other work W2. Positioning was performed on the end face F2. In this case, the position of the end face F1 of one work W1 was positioned so as to be a position of about 1 / 2t of the plate thickness t of the other work W2. Then, the focal position F is set to the outside of the end faces F1 and F2 (to the + position), and the laser beam is in a state including the corners on the surfaces W1A and W2A side of the workpieces W1 and W2 and the end faces F1 and F2. LB was irradiated. The irradiation direction of the laser beam LB in this case was irradiated so as to be directed to the intersection position C of the back surfaces W1B and W2B of the workpieces W1 and W2.
一方のワークＷ１と他方のワークＷ２とを、図２（ａ）に示した状態においてレーザ溶接を行ったところ、金属溶融時の表面張力によって、ワークＷ１，Ｗ２の溶接部ＷＥは、図２（ｂ）に示すように、Ｒ形状に形成されることを確認した。また、上記レーザ溶接においては、ワークＷ１，Ｗ２における裏面Ｗ１Ｂ，Ｗ２Ｂの交差位置Ｃは溶融されてはいなかった。 When laser welding is performed on one workpiece W1 and the other workpiece W2 in the state shown in FIG. 2A, the welded portion WE of the workpieces W1 and W2 is shown in FIG. As shown in b), it was confirmed to be formed in an R shape. Further, in the laser welding, the intersection position C of the back surfaces W1B and W2B in the workpieces W1 and W2 was not melted.
すなわち、一方のワークＷ１の端面Ｆ１と他方のワークＷ２の端面Ｆ２とを交差した状態に突き合せてレーザ溶接を行うとき、一方のワークＷ１の裏面Ｗ１Ｂの端部を、他方のワークＷ２の端面Ｆ２の全面に亘ることなく突き合せ位置決めしてレーザ溶接を行うことにより、溶け落ちを生じることなく溶接部ＷＥはＲ形状に形成される。そして、ワークＷ１，Ｗ２における裏面Ｗ１Ｂ，Ｗ２Ｂの交差位置は溶融されることがないことを確認した。すなわち、溶接部ＷＥの外観が良好で溶け落ちのない良好な溶接を行い得ることを確認した。 That is, when laser welding is performed with the end face F1 of one work W1 and the end face F2 of the other work W2 crossed, the end of the back face W1B of the one work W1 is used as the end face of the other work W2. By performing butt positioning without performing the entire surface of F2 and performing laser welding, the welded portion WE is formed in an R shape without causing melting. And it confirmed that the crossing position of the back surfaces W1B and W2B in the workpieces W1 and W2 was not melted. That is, it was confirmed that the welded portion WE had a good appearance and could be welded well without melting.
ところで、前述のように、一方のワークＷ１の端部を、他方のワークＷ２の端面Ｆ２に突き合せてレーザ溶接を行うとき、他方のワークＷ２の端面Ｆ２に対する一方のワークＷにおける端面Ｆ１の位置が種々異なると、レーザ溶接条件が同一であっても、前記溶接部ＷＥの形状が良好な形状にならず変化する傾向にある。また、他方のワークＷ２の端面Ｆ２に対する一方のワークＷ１の端面Ｆ１の位置決めが難しいものであった。 By the way, as described above, when laser welding is performed by abutting the end of one work W1 with the end face F2 of the other work W2, the position of the end face F1 of the one work W with respect to the end face F2 of the other work W2. If they are different, even if the laser welding conditions are the same, the shape of the welded portion WE tends to change without becoming a good shape. Further, it is difficult to position the end face F1 of one work W1 with respect to the end face F2 of the other work W2.
上述に鑑みて、本実施形態においては、次のようにしてワークＷ１とワークＷ２との端部の突き合せ溶接を行うものである。すなわち、図３（ａ），（ｂ）に示すように、一方のワークＷ１の端部における表面に面取り加工ＣＨを行う。この場合、図３（ａ）に示すように、ワークＷ１の端部付近を、バイト等の切削工具によってＶ形状の溝Ｖを切削加工する。そして、上記Ｖ溝の底部に沿ってレーザ切断加工を行うことによって前記面取り加工ＣＨが行われるものである。 In view of the above, in this embodiment, butt welding of the end portions of the workpiece W1 and the workpiece W2 is performed as follows. That is, as shown in FIGS. 3A and 3B, chamfering CH is performed on the surface of the end portion of one workpiece W1. In this case, as shown in FIG. 3A, a V-shaped groove V is cut by a cutting tool such as a cutting tool near the end of the workpiece W1. The chamfering CH is performed by performing laser cutting along the bottom of the V groove.
そして、他方のワークＷ２の端面Ｆ２を、前記一方のワークＷ１の裏面Ｗ１Ｂに突合せる。また、一方のワークＷ１の端面Ｆ１と他方のワークＷ２の表面Ｗ２Ａとがほぼ一致するように位置決めする。すなわち、ワークＷ１とワークＷ２とは直角を保持するように端部を突合せ位置決めするものである。この位置決めは、位置決め治具（図示省略）を用いることにより容易に行い得るものである。上述のように、一方のワークＷ１の端面Ｆ１と他方のワークＷ２の表面Ｗ２Ａとが一致するように位置決めするものである。したがって、一方のワークＷ１と他方のワークＷ２との位置的関係は、常に一定の位置的関係を保持して位置決めし得るものである。 Then, the end face F2 of the other work W2 is brought into contact with the back face W1B of the one work W1. Further, the positioning is performed so that the end face F1 of one workpiece W1 and the surface W2A of the other workpiece W2 substantially coincide. That is, the workpiece W1 and the workpiece W2 are positioned so that the end portions are butt-matched so as to maintain a right angle. This positioning can be easily performed by using a positioning jig (not shown). As described above, the positioning is performed so that the end face F1 of one workpiece W1 and the surface W2A of the other workpiece W2 coincide. Therefore, the positional relationship between one workpiece W1 and the other workpiece W2 can always be positioned while maintaining a certain positional relationship.
上述のように、水平又は垂直な一方のワークＷ１の端部と垂直又は水平な他方のワークＷ２の端部とを直角に突合せ位置決めした後、突合せ部分にレーザ光ＬＢを照射してレーザ溶接を行うものである。この際、レーザ光ＬＢは、垂直に対して角度θだけ傾斜し、レーザ光ＬＢの照射位置は、溶接位置ＷＥの外観が良好な溶接となるように、実験的に求めた位置とするものである。すなわち、図３（ａ），（ｂ）に示すように、一方のワークＷ１における表面Ｗ１Ａの端部に面取り加工ＣＨを行って、レーザ溶接を行うと、図３（ｃ）に示すように、溶接位置ＷＥは、溶融金属の表面張力によって表面がＲ形状を呈し、かつワークＷ１，Ｗ２の裏面は溶融されることのない良好な溶接となるものである。 As described above, the end of one horizontal or vertical workpiece W1 and the end of the other vertical or horizontal workpiece W2 are butt-positioned at right angles, and then laser welding is performed by irradiating the butt portion with the laser beam LB. Is what you do. At this time, the laser beam LB is inclined by an angle θ with respect to the vertical, and the irradiation position of the laser beam LB is set to an experimentally determined position so that the welding position WE has a good appearance. is there. That is, as shown in FIGS. 3A and 3B, when laser welding is performed by chamfering the end portion of the surface W1A of one workpiece W1, as shown in FIG. 3C, In the welding position WE, the surface has an R shape due to the surface tension of the molten metal, and the back surfaces of the workpieces W1 and W2 are excellently welded without being melted.
ところで、レーザ光ＬＢの照射方向は、一方のワークＷ１の端面Ｆ１付近を指向し、かつ一方のワークＷ１における裏面Ｗ１Ｂと他方のワークＷ２における裏面との交差位置付近を指向した方向であることが望ましい。 By the way, the irradiation direction of the laser beam LB is directed in the vicinity of the end surface F1 of one workpiece W1 and in the vicinity of the intersection position between the back surface W1B of one workpiece W1 and the back surface of the other workpiece W2. desirable.
上述のように、複数枚のワークの直角な接合部をレーザ溶接して、例えば溶接構造体として箱体を製造した場合、箱体の角部の溶接部の外観はＲ面であって、箱体の各内面が直角に交差し、かつ各内面の交差位置に溶接ビード等が存在しない外観良好な箱体となるものである。 As described above, when a box-shaped body is manufactured as a welded structure by laser welding a plurality of right-angle joints of a plurality of workpieces, the appearance of the welded portion at the corner of the box is an R plane, Each inner surface of the body intersects at right angles, and a box body with good appearance is obtained in which no weld bead or the like exists at the intersecting position of each inner surface.
ところで、前述したように、端部の面取り加工ＣＨを行った一方のワークＷ１を、図３（ａ）に示すように、他方のワークＷ２の上面に配置した場合（上Ｖ）と、図３（ｂ）に示すように、一方のワークＷ１を他方のワークＷ２の下側に配置した場合（下Ｖ）の二種類の試験片を用意した。上記試験片は、ＳＵＳ３０４、板厚（ｔ＝１．５ｍｍ）、溶接長４０ｍｍ、である。そして、引っ張り剪断力の測定を行うために、ワークＷ１，Ｗ２の裏面Ｗ１Ｂ，Ｗ２Ｂ側が溶融されることのない溶接条件でもってレーザ溶接を行って、同一構成の試験片を複数用意した。 By the way, as described above, when one work W1 subjected to the chamfering process CH at the end is arranged on the upper surface of the other work W2 (upper V) as shown in FIG. As shown in (b), two types of test pieces were prepared when one work W1 was placed under the other work W2 (lower V). The test piece is SUS304, plate thickness (t = 1.5 mm), weld length 40 mm. In order to measure the tensile shear force, laser welding was performed under welding conditions in which the back surfaces W1B and W2B of the workpieces W1 and W2 were not melted, and a plurality of test pieces having the same configuration were prepared.
引っ張り試験を行うに際しては、治具を用いて一方のワークＷ１を固定し、他方のワークＷ２を引っ張ることによって試験を行った。試験の結果は、図４に示すとおりであった。図４において、平均引っ張りせん断力は、同一構成の複数の試験片による引っ張り試験の平均値である。 When performing the tensile test, the test was performed by fixing one work W1 using a jig and pulling the other work W2. The result of the test was as shown in FIG. In FIG. 4, the average tensile shear force is an average value of a tensile test using a plurality of test pieces having the same configuration.
図４において、ＮＯ１，２の試験片においての、ワークＷ１におけるＶ溝の深さは１．０ｍｍである。換言すればワークＷ１の板厚の約６７％の深さである。ＮＯ３，４の試験片であるワークＷ１のＶ溝の深さは０．８ｍｍであり、板厚の約５３％の深さである。ＮＯ５，６の試験片であるワークＷ１のＶ溝の深さは０．６ｍｍで、板厚の約４０％である。 In FIG. 4, the depth of the V groove in the workpiece W1 in the test pieces of NO1, 2 is 1.0 mm. In other words, the depth is about 67% of the thickness of the workpiece W1. The depth of the V groove of the workpiece W1, which is a test piece of NO3, 4, is 0.8 mm, which is about 53% of the plate thickness. The depth of the V groove of the workpiece W1, which is a test piece of NO5, 6, is 0.6 mm, which is about 40% of the plate thickness.
図４に示された結果から明らかなように、Ｖ溝の深さが浅くなる（小さくなる）と、図３（ａ），（ｂ）に示した一方のワークＷ１における端面Ｆ１が厚くなることである。したがって、Ｖ溝が浅くなると、溶接部ＷＥの溶融金属量が多くなり、エッジが膨らむ傾向にある。よって、Ｖ溝の深さは適正な範囲が存在することになる。 As is apparent from the results shown in FIG. 4, when the depth of the V-groove becomes shallower (smaller), the end face F1 of one workpiece W1 shown in FIGS. 3A and 3B becomes thicker. It is. Therefore, when the V-groove becomes shallow, the amount of molten metal in the welded portion WE increases and the edge tends to swell. Therefore, an appropriate range exists for the depth of the V groove.
そこで、ＳＵＳ３０４、ｔ＝１．５ｍｍにおいては、溶接部ＷＥのＲ面ビードの形状を上Ｖと下Ｖにおいての差をより詳細に検査したところ、図５に示すとおりであった。図５から明らかなように、板厚ｔ＝１．５ｍｍにおいて、Ｖ溝の深さは、１ｍｍ〜０．８ｍｍが好ましいものであった。すなわち、ワークＷ１の板厚に対して約６７％〜約５３％の範囲が好ましいものである。 Therefore, in SUS304, t = 1.5 mm, the difference between the upper V and the lower V of the R-surface bead shape of the welded portion WE was inspected in more detail as shown in FIG. As apparent from FIG. 5, when the plate thickness is t = 1.5 mm, the depth of the V-groove is preferably 1 mm to 0.8 mm. That is, a range of about 67% to about 53% with respect to the thickness of the workpiece W1 is preferable.
なお、板材としてはＳＵＳに限らず例えばＳＰＣ，Ａｌもある。また、薄い板材としては、ｔ＝１．５ｍｍに限らず、ｔ＝１．０ｍｍ〜ｔ＝２．５ｍｍ（Ｖ溝の深さは２．０ｍｍとなる）の範囲においてＶ溝を形成することができる。そこで、各板厚のワークに対して、板厚の約６７％〜約５３％の範囲のＶ溝を形成して、前述と同様のレーザ加工を行ったところ、ほぼ前述と同様の効果が得られた。 The plate material is not limited to SUS, and for example, SPC and Al are also available. Further, the thin plate material is not limited to t = 1.5 mm, and the V-groove may be formed in the range of t = 1.0 mm to t = 2.5 mm (the depth of the V-groove is 2.0 mm). it can. Therefore, when the V-groove in the range of about 67% to about 53% of the plate thickness is formed on the workpiece of each plate thickness and laser processing similar to the above is performed, the same effect as described above is obtained. It was.
ところで、図４から明らかなように、Ｖ溝の深さが同一であっても、平均引っ張りせん断力は、上Ｖよりも下Ｖの方が大きい。したがって、一方のワークＷ１と他方のワークＷ２との配置関係は、図３（ａ）に示したごとき上Ｖの関係よりも、図３（ｂ）に示したごとき下Ｖの関係に配置してレーザ溶接を行うことが望ましいものである。 Incidentally, as apparent from FIG. 4, even when the depth of the V-groove is the same, the average tensile shear force is greater in the lower V than in the upper V. Therefore, the arrangement relationship between one workpiece W1 and the other workpiece W2 is arranged in a lower V relationship as shown in FIG. 3B rather than an upper V relationship as shown in FIG. It is desirable to perform laser welding.
Ｗ１ 一方のワーク Ｗ２ 他方のワーク
Ｗ１Ａ 表面 Ｗ２Ａ 表面
Ｗ１Ｂ 裏面 Ｗ２Ｂ 裏面
Ｆ１ 端面 Ｆ２ 端面
Ｃ 裏面の交差位置 ＷＥ 溶接部
W1 One workpiece W2 The other workpiece W1A Front surface W2A Front surface W1B Back surface W2B Back surface F1 End surface F2 End surface C Back surface intersection position WE Welded part
Claims (6)
（ａ）一方のワークの端部における表面に面取り加工を行う工程、
（ｂ）他方のワークの端面を前記一方のワークの裏面に突合せ、前記一方のワークの端面と他方のワークの表面とがほぼ一致するように位置決めする工程、
（ｃ）前記一方のワークと他方のワークとの突合せ部分へレーザ光を照射して金属を溶融する工程、
（ｄ）前記金属溶融時の表面張力によって、前記一方のワークと他方のワークとの溶接部の表面をＲ形状に形成する工程、
を備えていることを特徴とするレーザ溶接方法。 A laser welding method in which laser welding is performed by butting the end surface of one plate-like workpiece and the end surface of the other plate-like workpiece in an intersecting state,
(A) a step of chamfering the surface at the end of one workpiece;
(B) a step of abutting the end surface of the other workpiece with the back surface of the one workpiece and positioning the end surface of the one workpiece and the surface of the other workpiece to substantially coincide with each other;
(C) a step of irradiating a laser beam to a butt portion between the one workpiece and the other workpiece to melt the metal;
(D) forming a surface of a welded portion between the one workpiece and the other workpiece into an R shape by surface tension at the time of melting the metal;
A laser welding method characterized by comprising:
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH11104866A (en) * | 1997-09-30 | 1999-04-20 | Showa Alum Corp | Aluminum vessel and manufacture thereof |
| JP2006224129A (en) * | 2005-02-16 | 2006-08-31 | Tokyu Car Corp | Laser welded structure and laser welding method |
| JP2014170187A (en) * | 2013-03-05 | 2014-09-18 | Sumitomo Electric Ind Ltd | Sealing component, optical device sealing structure, method for manufacturing sealing component and method for manufacturing optical device sealing structure |
| JP2015092456A (en) * | 2013-10-01 | 2015-05-14 | 住友電気工業株式会社 | Encapsulated type power storage device, and manufacturing method of the same |
| JP2016002562A (en) * | 2014-06-16 | 2016-01-12 | トヨタ自動車株式会社 | Laser beam welding device and laser beam welding method |
-
2017
- 2017-05-11 JP JP2017094423A patent/JP6899253B2/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH11104866A (en) * | 1997-09-30 | 1999-04-20 | Showa Alum Corp | Aluminum vessel and manufacture thereof |
| JP2006224129A (en) * | 2005-02-16 | 2006-08-31 | Tokyu Car Corp | Laser welded structure and laser welding method |
| JP2014170187A (en) * | 2013-03-05 | 2014-09-18 | Sumitomo Electric Ind Ltd | Sealing component, optical device sealing structure, method for manufacturing sealing component and method for manufacturing optical device sealing structure |
| JP2015092456A (en) * | 2013-10-01 | 2015-05-14 | 住友電気工業株式会社 | Encapsulated type power storage device, and manufacturing method of the same |
| JP2016002562A (en) * | 2014-06-16 | 2016-01-12 | トヨタ自動車株式会社 | Laser beam welding device and laser beam welding method |
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