JPH08197269A - Method for joining surface treated steel sheet by laser beam welding - Google Patents
Method for joining surface treated steel sheet by laser beam weldingInfo
- Publication number
- JPH08197269A JPH08197269A JP7009786A JP978695A JPH08197269A JP H08197269 A JPH08197269 A JP H08197269A JP 7009786 A JP7009786 A JP 7009786A JP 978695 A JP978695 A JP 978695A JP H08197269 A JPH08197269 A JP H08197269A
- Authority
- JP
- Japan
- Prior art keywords
- steel sheet
- treated steel
- joining
- surface treated
- treated
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
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
- B23K2103/00—Materials to be soldered, welded or cut
- B23K2103/02—Iron or ferrous alloys
- B23K2103/04—Steel or steel alloys
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明は鉄板或いは軟鋼板など
に、防錆または美観を目的として亜鉛メッキ、錫メッキ
または塗装などの表面処理を施した表面処理鋼板のレー
ザー溶接による接合方法に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a joining method by laser welding of a surface-treated steel sheet which is surface-treated by galvanizing, tinning or painting for the purpose of rust prevention or aesthetics on an iron sheet or a mild steel sheet.
【０００２】[0002]
【従来の技術】完成後の板金加工製品に対するメッキ工
程または塗装工程の簡略化を図るため、亜鉛メッキ、錫
メッキまたは塗装などの表面処理を施した表面処理鋼板
を使用した板金加工製品が増加している。2. Description of the Related Art In order to simplify the plating process or painting process for finished sheet metal products, the number of sheet metal products using surface-treated steel sheets with surface treatment such as zinc plating, tin plating or painting is increasing. ing.
【０００３】上述の板金加工製品は一つの部材または部
品のみからなるものも少なくないが、幾つかの部材また
は部品を接合して製品になるものもある。複数の部材ま
たは部品を接合してなる板金加工製品の接合部の接合方
法は溶接または「かしめ」などの方法が使用されてい
る。Many of the above-mentioned sheet metal processed products are composed of only one member or part, but there are also products in which several members or parts are joined to form a product. As a method of joining a joined portion of a sheet metal product formed by joining a plurality of members or parts, a method such as welding or "caulking" is used.
【０００４】ところで表面処理鋼板の重ね合わせ接合に
対する溶接は、溶接時の高温度によって母材より融点お
よび蒸発温度が極めて低い表面処理物質が爆発的に蒸発
して、溶接金属または溶着金属を飛散させてしてしまう
ので溶接による重ね合わせ接合はむずかしく、特に入熱
エネルギー密度の極めて大きいレーザー溶接は一層困難
である。また塗装鋼板を溶接する場合には、塗装塗料が
燃焼して溶接部の広い周囲まで変色を生じる。そのた
め、表面処理鋼板の接合方法には「かしめ」による接合
が一般に使用されている。By the way, in the welding for superposition joining of surface-treated steel plates, the surface-treated substance having a melting point and an evaporation temperature extremely lower than that of the base metal explosively evaporates due to the high temperature during welding, and the weld metal or the weld metal is scattered. Therefore, it is difficult to perform lap joining by welding, and laser welding having a particularly high heat input energy density is more difficult. Further, when welding a coated steel sheet, the coating paint burns to cause discoloration even in the wide periphery of the welded portion. Therefore, as a joining method for the surface-treated steel sheets, joining by "staking" is generally used.
【０００５】[0005]
【発明が解決しようとする課題】上述の「かしめ」によ
る表面処理鋼板の接合方法においては、「かしめ」加工
用のプレス装置と、製品の形状に合わせた「かしめ」加
工用の高価な金型を多種類用意して置くことが必要とな
りその金型費用が問題となる。In the method for joining surface-treated steel sheets by "crimping" described above, a pressing device for "crimping" and an expensive metal mold for "crimping" in accordance with the shape of the product are used. It is necessary to prepare and place many kinds of molds, and the mold cost becomes a problem.
【０００６】また「かしめ」による接合では、「かし
め」用金型と加工製品との干渉を回避する必要があるの
で加工可能な製品形状に制約がある。[0006] In the case of joining by "caulking", it is necessary to avoid interference between the "caulking" die and the processed product, so that there is a restriction on the shape of the product that can be processed.
【０００７】さらに、「かしめ」による接合方法は、接
合部分の気密性または水密性を１００％保証することが
出来ないので、気密性または水密性を必要とする製品に
は使用することが出来ないという問題もある。Furthermore, the "caulking" joining method cannot guarantee 100% airtightness or watertightness of the joining part, and therefore cannot be used for products requiring airtightness or watertightness. There is also a problem.
【０００８】本発明は上述のような問題点に鑑みてなさ
れたものであり、その課題は加工出来る製品形状に制約
がなく、また接合部分の気密性または水密性を１００％
保証可能な表面処理鋼板のレーザー溶接による接合方法
を提供することである。The present invention has been made in view of the above-mentioned problems, and the problem is that there is no restriction on the shape of a product that can be processed, and the airtightness or watertightness of the joint portion is 100%.
It is an object of the present invention to provide a method of joining a surface-treated steel sheet that can be guaranteed by laser welding.
【０００９】また、多種類の金型を用意せずに接合加工
が出来る表面処理鋼板のレーザー溶接による接合方法を
提供することである。Another object of the present invention is to provide a joining method by laser welding of surface-treated steel sheets which can be joined without preparing many kinds of dies.
【００１０】[0010]
【課題を解決するための手段】上記の課題を達成するた
め、請求項１による表面処理鋼板のレーザー溶接による
接合方法は、表面処理鋼板のレーザー溶接による接合方
法にして、板厚ｔの表面処理鋼板からなる第１の部材１
の接合端部４Ａに表面処理膜３が外側にくる様に幅寸法
Ａのヘミング部を形成し、板厚ｔの前記表面処理鋼板か
らなる第２の部材２の接合端部４Ｂに、前記表面処理膜
３が外側に出る様に立上がり高さがほぼ（２×ｔ）、幅
寸法がほぼ（Ａ−ｔ）を有するフランジ部５を形成し、
前記第１の部材１のヘミング部と第２の部材２のフラン
ジ部５の表面処理膜３の側とを密接固定し、前記第２の
部材２のフランジ部５の端部にレーザービームを照射し
てレーザー溶接するようにしたものである。In order to achieve the above-mentioned object, the joining method of the surface-treated steel sheet according to claim 1 by laser welding is the joining method by laser welding of the surface-treated steel sheet, and the surface treatment of the sheet thickness t is performed. First member 1 made of steel plate
A hemming portion having a width A is formed on the joint end portion 4A of the surface treatment film 3 so that the surface treatment film 3 is on the outer side, and A flange portion 5 having a rising height of approximately (2 × t) and a width dimension of approximately (A−t) is formed so that the treatment film 3 is exposed to the outside,
The hemming portion of the first member 1 and the surface treatment film 3 side of the flange portion 5 of the second member 2 are closely fixed, and the end portion of the flange portion 5 of the second member 2 is irradiated with a laser beam. Then, laser welding is performed.
【００１１】そして、請求項２による表面処理鋼板のレ
ーザー溶接による接合方法は、前記請求項１において表
面処理鋼板が亜鉛メッキ鋼板または錫メッキ鋼板である
ことを特徴とするものである。The joining method by laser welding of the surface-treated steel sheet according to claim 2 is characterized in that the surface-treated steel sheet according to claim 1 is a galvanized steel sheet or a tin-plated steel sheet.
【００１２】また、請求項３による表面処理鋼板のレー
ザー溶接による接合方法は、前記請求項１において表面
処理鋼板が塗装鋼板であることを特徴とするものであ
る。Further, the joining method by laser welding of the surface-treated steel sheet according to claim 3 is characterized in that the surface-treated steel sheet according to claim 1 is a coated steel sheet.
【００１３】[0013]
【作用】請求項１による表面処理鋼板のレーザー溶接に
よる接合方法とすることにより、溶接時の高温度によっ
て母材より融点および蒸発温度が極めて低い表面処理物
質が溶接時の高温度によって爆発的に蒸発しても、接合
部の外方向に飛散可能であるので溶接金属または溶着金
属を飛散させることがない。また溶接接合であるので接
合部分の気密性または水密性がある。With the method of joining the surface-treated steel sheets by laser welding according to claim 1, the surface-treated substance having a melting point and an evaporation temperature extremely lower than that of the base metal due to the high temperature during the welding explosively explodes due to the high temperature during the welding. Even if evaporated, the weld metal or the weld metal is not scattered because it can be scattered to the outside of the joint. Further, since it is a welded joint, it has airtightness or watertightness at the joint.
【００１４】そして請求項２による表面処理鋼板のレー
ザー溶接による接合方法とすることにより、請求項１の
作用に加えて、亜鉛メッキまたは錫メッキを施した表面
処理鋼板の良好なレーザー溶接による接合が可能とな
る。By the method of joining the surface-treated steel sheets according to claim 2 by laser welding, in addition to the effect of claim 1, good joining of the surface-treated steel sheet plated with zinc or tin by laser welding can be achieved. It will be possible.
【００１５】また請求項３による表面処理鋼板のレーザ
ー溶接による接合方法とすることにより、請求項１の作
用に加えて塗装鋼板においても良好なレーザー溶接によ
る接合が可能となる。Further, by adopting the method of joining the surface-treated steel sheet by laser welding according to the third aspect, it is possible to perform good laser welding of the coated steel sheet in addition to the action of the first aspect.
【００１６】[0016]
【実施例】本発明に係わる表面処理鋼板のレーザー溶接
による接合方法の実施例を図面を用いて説明する。図１
は本発明に係わる表面処理鋼板のレーザー溶接による接
合方法の実施例で、板厚ｔの表面処理鋼板からなる第１
の部材１と第２の部材２とを接合するために固定配置し
た状態が示されている。なお第１の部材１と第２の部材
２とを固定する固定装置は図示を省略してある。EXAMPLES Examples of a joining method by laser welding of surface-treated steel sheets according to the present invention will be described with reference to the drawings. FIG.
Is an embodiment of the joining method by laser welding of the surface-treated steel sheet according to the present invention.
The member 1 and the second member 2 are fixedly arranged for joining. The fixing device for fixing the first member 1 and the second member 2 is not shown.
【００１７】前記第１の部材１と第２の部材２の片面に
は、例えば母材より融点および蒸発温度が極めて低い表
面処理物質である亜鉛メッキまたは錫メッキ或いは塗装
などの表面処理膜３が形成されている。そして第１の部
材１の接合端部４Ａは表面処理膜３が外側（図１におい
て下側）に出る様にヘミング加工（曲げ返し加工）され
ている。On one surface of the first member 1 and the second member 2, for example, a surface treatment film 3 such as zinc plating or tin plating, which is a surface treatment substance having extremely lower melting point and evaporation temperature than the base material, or coating, is applied. Has been formed. The joining end 4A of the first member 1 is hemmed (bent back) so that the surface-treated film 3 is exposed to the outside (lower side in FIG. 1).
【００１８】そして第２の部材２の接合端部４Ｂには、
表面処理膜３が外側（図１において下側）になる様に第
２の部材２の端部を内外に折り曲げてフランジ部５を形
成してある。このフランジ部５の立上がり高さ（Ｈ）
は、第１の部材１または第２の部材２の基底部６からほ
ぼ板厚の２倍の高さ（Ｈ＝２ｔ）を有する様に形成され
ている。また第２の部材２のフランジ部５の幅寸法Ｂ
は、前記ヘミング加工の幅Ａよりほぼ板厚（ｔ）分短か
い寸法幅Ｂ（Ｂ＝Ａ−ｔ）になるように形成されてい
る。The joint end 4B of the second member 2 is
The flange portion 5 is formed by bending the end portion of the second member 2 inward and outward so that the surface treatment film 3 is on the outer side (lower side in FIG. 1). The rising height (H) of this flange portion 5
Is formed to have a height (H = 2t) approximately twice the plate thickness from the base portion 6 of the first member 1 or the second member 2. Further, the width dimension B of the flange portion 5 of the second member 2
Is formed to have a dimension width B (B = A−t) which is shorter than the width A of the hemming process by a plate thickness (t).
【００１９】上記のように形成された第２の部材２の接
合端部４Ｂのフランジ部５は、表面処理膜３が形成され
た側を前記第１の部材１のヘミング加工された接合端部
４Ａ上に載置する様に固定配置し、図示省略の固定装置
により固定される（図１）。従って、第１の部材１およ
び第２の部材２の基底部６側に表面処理膜３が露出され
た状態となる。The flange portion 5 of the joint end portion 4B of the second member 2 formed as described above has a hemmed joint end portion of the first member 1 on the side where the surface treatment film 3 is formed. It is fixedly arranged so as to be placed on 4A and fixed by a fixing device (not shown) (FIG. 1). Therefore, the surface treatment film 3 is exposed on the base 6 side of the first member 1 and the second member 2.
【００２０】上記のごとく接合部を固定配置した後、前
記第２の部材２のフランジ部５の端部に溶接に適した強
度のレーザービーム７を照射すると共にレーザービーム
７または部材側を適宜に移動させて溶接加工を実施す
る。このレーザービーム７の照射により、第２の部材２
が溶融すると同時に第１の部材１の露出された表面処理
膜３は母材の金属より極めて融点および蒸発温度が低い
ので、表面処理膜３は接合部から大気中への方向に蒸発
飛散し、溶接金属（または溶着金属）９を飛散させるこ
となく良好なビードが形成される。なお照射するレーザ
ービームの強度を調節することにより溶接部８の形状は
後述の２種類を選択することが出来る。After the joint portion is fixedly arranged as described above, the end portion of the flange portion 5 of the second member 2 is irradiated with a laser beam 7 having an intensity suitable for welding, and the laser beam 7 or the member side is appropriately disposed. Move and perform welding process. By the irradiation of the laser beam 7, the second member 2
Since the exposed surface-treated film 3 of the first member 1 has an extremely lower melting point and evaporation temperature than the base metal, the surface-treated film 3 evaporates and scatters in the direction from the joint to the atmosphere. Good beads are formed without scattering the weld metal (or weld metal) 9. The shape of the welded portion 8 can be selected from two types described below by adjusting the intensity of the laser beam to be applied.
【００２１】なおまた本発明の実施例ではレーザー加工
機の構造については説明を省略してあるが、前記レーザ
ービーム７は第１の部材１と第２の部材２の接合部８に
対して適宜な速度で紙面に垂直方向および平行方向に任
意に移動出来るようになっているものである。Although the description of the structure of the laser beam machine is omitted in the embodiment of the present invention, the laser beam 7 is appropriately applied to the joint portion 8 of the first member 1 and the second member 2. It is designed to be movable at any speed in the direction perpendicular to the paper surface and in the direction parallel to the paper surface.
【００２２】図２および図３は上記の実施例による方法
で溶接した場合の接合部８の形状を示したものであり、
図２は通常の接合方法で、溶接金属（または溶着金属）
９は第１の部材１のヘミング加工部の曲げ返し部材のと
ころまでで止まっている。この接合方法はさほど接合部
の強度を必要としない通常の接合の場合に用いられる。
図３は溶接金属（または溶着金属）９は第１の部材１の
ヘミング加工の部の曲げ返し部を過ぎて第１の部材１の
本体部分の１部にまで及んでいるもので、接合部の強度
を重視する場合に採られるものである。なおこの強度を
重視する溶接接合の場合、第１の部材１の板厚は少なく
とも１ｍｍ以上を必要とし、出力制御がパルス単位で出
来るパルスレーザーを使用するのが好ましい。2 and 3 show the shape of the joint portion 8 when the welding is carried out by the method according to the above embodiment,
Fig. 2 shows the normal joining method, weld metal (or weld metal)
Reference numeral 9 stops at the bent-back member of the hemming portion of the first member 1. This joining method is used in the case of ordinary joining which does not require the strength of the joining portion so much.
FIG. 3 shows that the weld metal (or weld metal) 9 extends beyond the bent-back portion of the hemming portion of the first member 1 to a portion of the main body portion of the first member 1, and the joint portion This is adopted when the strength of is emphasized. In addition, in the case of welding joining that places importance on strength, the plate thickness of the first member 1 needs to be at least 1 mm or more, and it is preferable to use a pulse laser capable of controlling output in pulse units.
【００２３】[0023]
【発明の効果】以上の説明から理解されるように、請求
項１の発明によれば、母材より融点および蒸発温度が極
めて低い表面処理物質が溶接時の高温度によって蒸発飛
散する場合には接合部から大気中への方向に飛散するの
で、溶接金属または溶着金属を飛散させることがなく良
好なレーザー溶接による表面処理鋼板の接合が可能とな
る。As can be understood from the above description, according to the invention of claim 1, when the surface-treated substance having a melting point and an evaporation temperature extremely lower than that of the base metal is evaporated and scattered by the high temperature during welding. Since it scatters in the direction from the joining portion to the atmosphere, it is possible to join the surface-treated steel sheet by excellent laser welding without scattering the weld metal or the weld metal.
【００２４】また「かしめ」と違い溶接接合であるので
接合部分の気密性または水密性がある。その結果より広
い製品に本発明の接合方法を使用することができる。Further, unlike "caulking", since it is a welded joint, it has airtightness or watertightness at the joint. As a result, the joining method of the present invention can be used for wider products.
【００２５】さらに溶接時には金型を使用しないので、
金型と製品との干渉による加工可能な製品形状の制約が
ない。また、「かしめ」用の多種類の金型が不要となる
ので金型費用の低減を図ることができる。Furthermore, since no mold is used during welding,
There is no restriction on the product shape that can be processed due to interference between the mold and the product. Further, since it is not necessary to use various types of dies for "staking", the die cost can be reduced.
【００２６】また、請求項２の発明によれば、請求項１
で得られる効果に加えて、亜鉛メッキ鋼板または錫メッ
キ鋼板に対して良好なレーザー溶接による接合が可能と
なる。According to the invention of claim 2, claim 1
In addition to the effect obtained by (3), good laser welding can be performed on a zinc-plated steel sheet or a tin-plated steel sheet.
【００２７】さらに、請求項３の発明によれば、請求項
１で得られる効果に加えて、塗装鋼板に対して良好なレ
ーザー溶接による接合が可能となる。またこの塗装鋼板
の接合においては、塗装面が溶接時の熱により変色しな
いので美観を損なうことがない。Further, according to the invention of claim 3, in addition to the effect obtained in claim 1, it is possible to perform good laser welding on the coated steel sheet. In addition, in the joining of the coated steel sheets, the painted surface does not change color due to heat during welding, so that it does not spoil the appearance.
【図１】本発明に係わる表面処理鋼板のレーザー溶接に
よる接合方法の実施例。FIG. 1 is an example of a joining method by laser welding of a surface-treated steel sheet according to the present invention.
【図２】本発明に係わる表面処理鋼板のレーザー溶接に
よる接合方法で溶接した場合の接合部の形状例。FIG. 2 is an example of the shape of a joint portion when the surface-treated steel sheet according to the present invention is welded by a laser welding joining method.
【図３】本発明に係わる表面処理鋼板のレーザー溶接に
よる接合方法で溶接した場合の接合部の形状例。FIG. 3 is an example of a shape of a joint portion when the surface-treated steel sheet according to the present invention is welded by a laser welding joining method.
【符号の説明】 １ 第１の部材１ ２ 第２の部材２ ３ 表面処理膜 ４Ａ 第１の部材１の接合端部 ４Ｂ 第２の部材２の接合端部 ５ 第２の部材２のフランジ部 ６ 第１の部材１または第２の部材２の基底部 ７ レーザービーム ８ 溶接部 ９ 溶接金属（または溶着金属） Ａ ヘミング部の幅寸法 Ｂ フランジ部の幅寸法 ｔ 表面処理鋼板の板厚[Description of Reference Signs] 1 first member 1 2 second member 2 3 surface treatment film 4A joining end portion of first member 1 4B joining end portion of second member 2 5 flange portion of second member 2 6 Base of the first member 1 or the second member 2 7 Laser beam 8 Welded portion 9 Weld metal (or welded metal) A Width of hemming portion B Width of flange portion t Thickness of surface-treated steel sheet
Claims (3)
方法にして、板厚ｔの表面処理鋼板からなる第１の部材
１の接合端部４Ａに表面処理膜３が外側にくる様に幅寸
法Ａのヘミング部を形成し、板厚ｔの前記表面処理鋼板
からなる第２の部材２の接合端部４Ｂに前記表面処理膜
３が外側に出る様に立上がり高さがほぼ（２×ｔ）、幅
寸法がほぼ（Ａ−ｔ）を有するフランジ部５を形成し、
前記第１の部材１のヘミング部と第２の部材２のフラン
ジ部５の表面処理膜３の側とを密接固定し、前記第２の
部材２のフランジ部５の端部にレーザービームを照射し
てレーザー溶接することを特徴とする表面処理鋼板のレ
ーザー溶接による接合方法。1. A joining method by laser welding of a surface-treated steel sheet, wherein a width dimension A is set such that a surface-treated film 3 is located outside a joining end portion 4A of a first member 1 made of a surface-treated steel sheet having a plate thickness t. Of the surface-treated steel sheet having a thickness t, and the rising height is approximately (2 × t) so that the surface-treated film 3 is exposed to the outside at the joint end 4B of the second member 2 made of the surface-treated steel sheet having a thickness t. Forming a flange portion 5 having a width dimension of approximately (A-t),
The hemming portion of the first member 1 and the surface treatment film 3 side of the flange portion 5 of the second member 2 are closely fixed, and the end portion of the flange portion 5 of the second member 2 is irradiated with a laser beam. A method for joining surface-treated steel sheets by laser welding, the method comprising laser welding.
は錫メッキ鋼板であることを特徴とする請求項１に記載
の表面処理鋼板のレーザー溶接による接合方法。2. The joining method according to claim 1, wherein the surface-treated steel sheet is a galvanized steel sheet or a tin-plated steel sheet.
を特徴とする請求項１に記載の表面処理鋼板のレーザー
溶接による接合方法。3. The joining method according to claim 1, wherein the surface-treated steel sheet is a coated steel sheet.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7009786A JPH08197269A (en) | 1995-01-25 | 1995-01-25 | Method for joining surface treated steel sheet by laser beam welding |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7009786A JPH08197269A (en) | 1995-01-25 | 1995-01-25 | Method for joining surface treated steel sheet by laser beam welding |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH08197269A true JPH08197269A (en) | 1996-08-06 |
Family
ID=11729918
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP7009786A Pending JPH08197269A (en) | 1995-01-25 | 1995-01-25 | Method for joining surface treated steel sheet by laser beam welding |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH08197269A (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH11104865A (en) * | 1997-10-03 | 1999-04-20 | Denso Corp | Welding and welding structure |
| JP2010167434A (en) * | 2009-01-21 | 2010-08-05 | Tokyu Car Corp | Laser welding method and outer panel for railway vehicle |
| JP2011125928A (en) * | 2009-12-15 | 2011-06-30 | Sung Woo Hitech Co Ltd | Laser welding method for steel sheet |
| WO2015044844A1 (en) * | 2013-09-30 | 2015-04-02 | Danfoss A/S | A method for attaching an object to a structure |
| EP2990701A1 (en) * | 2014-09-01 | 2016-03-02 | Danfoss A/S | A valve with a welded valve housing |
| WO2016034418A1 (en) * | 2014-09-01 | 2016-03-10 | Danfoss A/S | A valve with a welded valve housing |
-
1995
- 1995-01-25 JP JP7009786A patent/JPH08197269A/en active Pending
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH11104865A (en) * | 1997-10-03 | 1999-04-20 | Denso Corp | Welding and welding structure |
| JP2010167434A (en) * | 2009-01-21 | 2010-08-05 | Tokyu Car Corp | Laser welding method and outer panel for railway vehicle |
| JP2011125928A (en) * | 2009-12-15 | 2011-06-30 | Sung Woo Hitech Co Ltd | Laser welding method for steel sheet |
| WO2015044844A1 (en) * | 2013-09-30 | 2015-04-02 | Danfoss A/S | A method for attaching an object to a structure |
| US10814426B2 (en) | 2013-09-30 | 2020-10-27 | Danfoss A/S | Method for attaching an object to a structure |
| EP2990701A1 (en) * | 2014-09-01 | 2016-03-02 | Danfoss A/S | A valve with a welded valve housing |
| WO2016034418A1 (en) * | 2014-09-01 | 2016-03-10 | Danfoss A/S | A valve with a welded valve housing |
| US10344884B2 (en) | 2014-09-01 | 2019-07-09 | Danfoss A/S | Valve with a welded valve housing |
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