JP2002361461A - Method for lap welding with laser beam of zinc-based plated steel plates giving excellent corrosion resistance - Google Patents
Method for lap welding with laser beam of zinc-based plated steel plates giving excellent corrosion resistanceInfo
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- JP2002361461A JP2002361461A JP2001172449A JP2001172449A JP2002361461A JP 2002361461 A JP2002361461 A JP 2002361461A JP 2001172449 A JP2001172449 A JP 2001172449A JP 2001172449 A JP2001172449 A JP 2001172449A JP 2002361461 A JP2002361461 A JP 2002361461A
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- Prior art keywords
- zinc
- corrosion resistance
- corrosion
- welding
- plated steel
- Prior art date
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Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、亜鉛系めっき鋼板
をレーザ溶接するに際し、重ね溶接（以後、重ねレーザ
溶接という）する方法に関するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method of performing lap welding (hereinafter referred to as "lap laser welding") when laser welding a galvanized steel sheet.
【０００２】[0002]
【従来の技術】亜鉛めっき鋼板および亜鉛系合金めっき
鋼板などの亜鉛系めっき鋼板は、自動車を始め多くの産
業分野で耐食性材料として非常に多く使用されている。
これらは当然そのままで使用されるわけではなく、各種
形状に加工され、溶接や接着などによって接合され成形
品となり、その後の各種工程を経た後、最終の使用に供
される。2. Description of the Related Art Galvanized steel sheets, such as galvanized steel sheets and zinc-based alloy-coated steel sheets, are very often used as corrosion-resistant materials in many industrial fields such as automobiles.
These are, of course, not used as they are, but are processed into various shapes, joined by welding, bonding, or the like to form molded products, and after various subsequent processes, are used for final use.
【０００３】亜鉛系めっき鋼板を２枚以上重ねて、レー
ザ溶接すると、亜鉛の沸点が低いために鋼板間に亜鉛蒸
気が急速に発生し、溶融金属を吹き飛ばし、ピットやブ
ローホールを形成する事で、良好な外観や強度を得られ
ないことは従来からよく知られている。これに対して、
鋼板間に適当な隙間を形成することで良好な溶接が可能
であることもよく知られている。また、溶接部分の亜鉛
を含む層をはぎ取って溶接しても良好な溶接が可能であ
ることも知られている。When two or more galvanized steel sheets are stacked and laser-welded, zinc vapor is rapidly generated between the steel sheets due to the low boiling point of zinc, which blows away molten metal and forms pits and blow holes. It is well known that good appearance and strength cannot be obtained. On the contrary,
It is well known that good welding is possible by forming an appropriate gap between steel plates. It is also known that good welding is possible even by peeling and welding a layer containing zinc in a welded portion.
【０００４】前者については、たとえば、特開昭６１−
２７１８９号公報によれば、重ね合わせの一部の鋼板に
あらかじめ塑性加工を施すことが記されている。このほ
か、鋼板間に別の部材を挿入することで隙間を形成する
方法も数多く開示されている。たとえば特開平３−１６
５９９４号公報では、カーボン系の蒸気吸収材を、特開
平０４−２７９２９１号公報では紙をはさんでレーザ溶
接する方法が開示されている。後者については、たとえ
ば特開平０４−２５１６８４号公報では、レーザ光の出
力制御により、溶接前にピークの低いレーザ光で亜鉛め
っきを除去する方法が開示されている。The former is disclosed, for example, in Japanese Unexamined Patent Publication No.
According to Japanese Patent No. 27189, it is described that plastic processing is performed in advance on some of the steel plates that are overlapped. In addition, many methods have been disclosed for forming a gap by inserting another member between steel plates. For example, Japanese Unexamined Patent Publication No.
Japanese Patent Application Laid-Open No. 5994/94 discloses a method of laser welding a carbon-based vapor absorbing material with a paper sandwiched between Japanese Patent Application Laid-Open No. H04-279291. Regarding the latter, for example, Japanese Patent Application Laid-Open No. 04-251684 discloses a method in which zinc plating is removed with laser light having a low peak before welding by controlling the output of laser light.
【０００５】[0005]
【発明が解決しようとする課題】しかしながら、上述の
如き方法に共通して存在するのは、本来保持すべき耐食
性を確保することに問題を生じることである。当該部位
には、耐食性が必要であるために、亜鉛または亜鉛系合
金めっきが利用されている。ところが、レーザ溶接を可
能とするために隙間をもうけると、最も重要な腐食因子
である水が入りやすくなってしまい、この部位の耐食性
が大きく低下する。また、めっき層をはぎ取る方法で
は、あきらかに必要なめっき量がなくなってしまうのは
明白である。However, a common problem in the above-mentioned methods is that a problem arises in securing the corrosion resistance that should be maintained. Zinc or zinc-based alloy plating is used for the part because corrosion resistance is required. However, if a gap is formed to enable laser welding, water, which is the most important corrosion factor, is likely to enter, and the corrosion resistance at this portion is greatly reduced. Also, it is obvious that the method of stripping the plating layer obviously eliminates the required plating amount.
【０００６】[0006]
【課題を解決するための手段】本発明は、上記の課題を
解決するためになしたものであり、その要旨とするとこ
ろは、（１）亜鉛系めっき鋼板の少なくともレーザ溶接
をする部位に耐食性金属を、バインダーに混ぜて塗布す
ることを特徴とする、耐食性に優れた亜鉛系めっき鋼板
の重ね合わせレーザ溶接方法、（２）耐食性金属が、亜
鉛であることを特徴とする、（１）記載の耐食性に優れ
た亜鉛系めっき鋼板の重ね合わせレーザ溶接方法、
（３）耐食性金属がFe,Ni,Al,Mg,Co,Mn,Si,Sn,Pb,Pの１
種または２種以上を含み、残部が亜鉛であることを特徴
とする、（１）記載の耐食性に優れた亜鉛系めっき鋼板
の重ね合わせレーザ溶接方法、（４）バインダーが油で
あることを特徴とする、（１）、（２）、（３）のいず
れかに記載の耐食性に優れた亜鉛系めっき鋼板の重ね合
わせレーザ溶接方法、（５）油の引火点が100 ℃以下で
あることを特徴とする、（４）記載の耐食性に優れた亜
鉛系めっき鋼板の重ね合わせレーザ溶接方法、である。SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned problems, and the gist of the invention is that (1) at least a portion of a zinc-based plated steel plate to be laser-welded has corrosion resistance. A method for laser welding of superposed galvanized steel sheets having excellent corrosion resistance, wherein the metal is mixed with a binder and applied, (2) the corrosion-resistant metal is zinc, (1). Laser welding method for superposition of galvanized steel sheet with excellent corrosion resistance,
(3) The corrosion-resistant metal is one of Fe, Ni, Al, Mg, Co, Mn, Si, Sn, Pb, and P
(1) Lap welding laser method for galvanized steel sheet excellent in corrosion resistance according to (1), wherein the binder is oil, and wherein the binder is oil. The superposition laser welding method for galvanized steel sheet having excellent corrosion resistance according to any one of (1), (2) and (3), and (5) the flash point of oil is 100 ° C. or less. The method according to (4), wherein the zinc-plated steel sheet having excellent corrosion resistance is overlapped by laser welding.
【０００７】即ち、本発明は、亜鉛系めっき鋼板を重ね
てレーザ溶接する際に溶接欠陥（ピット、ブローホール
等）の問題を解消する目的で隙間を設けるに際し、隙間
を設けることで低下する耐食性を確保するために隙間と
耐食性の確保の両方の働きを有する耐食性金属をレーザ
溶接部を含む隙間部に容易に事前に分散付着させるもの
であり、これにより耐食性に優れた重ね合わせレーザ溶
接性の良い亜鉛系めっき鋼板を用いた部品の溶接法を提
供する。That is, according to the present invention, when providing a gap for the purpose of solving the problem of welding defects (pits, blowholes, etc.) when laminating galvanized steel sheets and performing laser welding, the corrosion resistance is reduced by providing the gap. In order to secure the gap, corrosion resistant metal having both the function of ensuring the gap and corrosion resistance is easily dispersed and adhered in advance to the gap including the laser welded part, thereby making the superposition laser weldability excellent in corrosion resistance We provide a welding method for parts using good galvanized steel sheet.
【０００８】[0008]
【発明の実施の形態】以下、本発明の詳細を説明する。
図１は、本発明による耐食性金属をバインダーに混ぜた
ものをスプレー方法で塗布しているイメージを示した斜
視図である。すなわち、対象となる亜鉛系めっき鋼板１
にスプレーノズル２からバインダーと混合した耐食性金
属スプレー３をし、亜鉛系めっき鋼板１上にバインダー
に分散した耐食性金属４を塗布させていることを表して
いる。DESCRIPTION OF THE PREFERRED EMBODIMENTS The details of the present invention will be described below.
FIG. 1 is a perspective view showing an image in which a mixture of a corrosion-resistant metal according to the present invention and a binder is applied by a spray method. That is, the target zinc-based plated steel sheet 1
Shows that a corrosion-resistant metal spray 3 mixed with a binder is sprayed from a spray nozzle 2 and a corrosion-resistant metal 4 dispersed in a binder is applied on the zinc-based plated steel sheet 1.
【０００９】本方法では、バインダーに所定サイズの耐
食性金属を混ぜて塗布することで、重ねレーザ溶接をす
る部位に、必要に応じた耐食性金属を、必要なサイズ、
必要な量、必要な分布状態（耐食性金属のサイズと分散
状態）で、確実に付着させることが可能である。なお、
耐食性金属４の亜鉛系めっき鋼板１への付着において
は、通常の刷毛塗り、スプレー塗布、コーター塗布、溶
液垂れ流し塗布などいずれの方法も用いることができる
ので、処理すべき鋼板および部品の状態により都合のよ
い方式を採用できる。In this method, a predetermined size of corrosion-resistant metal is mixed and applied to a binder, so that a corrosion-resistant metal having a required size,
It is possible to reliably adhere in a required amount and a required distribution state (the size and dispersion state of the corrosion-resistant metal). In addition,
In the adhesion of the corrosion-resistant metal 4 to the galvanized steel sheet 1, any method such as ordinary brush coating, spray coating, coater coating, and solution run-off coating can be used. A good method can be adopted.
【００１０】バインダーの主たる役割は、鋼板側に適当
に耐食性金属を分散して付着させることである。そのた
め、耐食性金属を分散できる有機物、無機物はすべて使
用が可能である。このバインダーにその他の役割を期待
して補足の取り扱いをすることも問題はない。たとえ
ば、さらなる耐食性を求めて、前処理や焼き付けなどを
施した塗装とすることも可能である。あるいは、別のバ
インダーとの組み合わせや防錆剤との組み合わせにも制
限はない。バインダーは、溶接時にはできるだけ早期に
低温で燃焼すること、あるいは蒸発すること、また、燃
焼ガス発生量が少ないことが望ましい。これは、高温で
しか燃焼しないか、あるいは燃焼速度が遅いと、バイン
ダーが亜鉛蒸気の逃げ道をふさぐ可能性が高くなるから
である。また、ガス発生量が多いと亜鉛蒸気とともにこ
のガスが、ピットやブローホールの発生に参加してしま
うからである。従って、一般に耐食性金属の量に対し
て、バインダーの量がより少ない方が有利になる。The main role of the binder is to appropriately disperse and attach the corrosion-resistant metal to the steel sheet side. Therefore, all organic and inorganic substances capable of dispersing the corrosion-resistant metal can be used. There is no problem in supplementing the binder with the expectation of another role. For example, in order to obtain further corrosion resistance, it is also possible to use a pre-treated or baked coating. Alternatively, there is no limitation on the combination with another binder or the combination with a rust inhibitor. It is desirable that the binder burn at a low temperature or evaporate as early as possible during welding and that the amount of generated combustion gas is small. This is because burning at high temperatures or slow burning rates increases the likelihood that the binder will block the escape path for zinc vapor. Also, if the amount of generated gas is large, this gas together with zinc vapor participates in the generation of pits and blowholes. Therefore, it is generally advantageous that the amount of the binder is smaller than the amount of the corrosion-resistant metal.
【００１１】良溶接性をもたらすのは耐食性金属による
隙間の形成である。耐食性金属の大きさについては、ピ
ットやブローホールの形成を抑制するためには、径１０
μm以上が必要であった。また、径が５００μm を越え
ると溶射ビードの溶け落ちがみられた。It is the formation of gaps made of a corrosion-resistant metal that provides good weldability. Regarding the size of the corrosion resistant metal, in order to suppress the formation of pits and blow holes, a diameter of 10
μm or more was required. Further, when the diameter exceeded 500 μm, burn-through of the sprayed beads was observed.
【００１２】耐食性金属の主体は、亜鉛である。そもそ
も、亜鉛の耐食性を生かして使用される部位での耐食性
の低下を補うことから亜鉛が使用される。しかし、亜鉛
の耐食性を向上させる目的でめっき鋼板としても亜鉛系
の合金めっきが用いられている。この耐食性金属として
は、これらの亜鉛系合金はすべて使用が可能である。こ
れらの合金の使用量を増加させることでさらに隙間部の
耐食性を増加させることも可能である。The main component of the corrosion resistant metal is zinc. In the first place, zinc is used because it makes use of the corrosion resistance of zinc to compensate for the decrease in corrosion resistance at the site where it is used. However, zinc-based alloy plating is also used as a plated steel sheet for the purpose of improving the corrosion resistance of zinc. All of these zinc-based alloys can be used as the corrosion-resistant metal. By increasing the amount of these alloys used, it is possible to further increase the corrosion resistance of the gap.
【００１３】耐食性金属による亜鉛系めっき鋼板の表面
被覆率が55％をこえると、レーザビームにより亜鉛を含
む耐食性金属の溶融後に発生する亜鉛蒸気のために、重
ねレーザ溶接時にピットやブローホールを生じてしま
い、レーザ溶接性が確保できないケースが急に多くな
る。このため、良溶接性と高耐食性を両立させるため
に、重ね部内の耐食性金属による亜鉛系めっき鋼板の表
面被覆率を50％以下に制限した。この現象の理由は、50
％までは、たとえ溶射ビームが耐食性金属に照射され、
めっきと同時に亜鉛蒸気を発生しても、周辺の空間が十
分に存在するためにピットやブローホールを生じない
が、55％を越えると、空間と発生する亜鉛蒸気の量がピ
ットやブローホールを生じるリミットに達するためと考
えられる。When the surface coverage of the galvanized steel sheet with the corrosion-resistant metal exceeds 55%, pits and blowholes occur during lap laser welding due to zinc vapor generated after melting of the corrosion-resistant metal containing zinc by the laser beam. In many cases, laser weldability cannot be ensured. Therefore, in order to achieve both good weldability and high corrosion resistance, the surface coverage of the galvanized steel sheet by the corrosion-resistant metal in the overlapped portion was limited to 50% or less. The reason for this phenomenon is 50
%, Even if the spray beam is applied to the corrosion resistant metal,
Even if zinc vapor is generated at the same time as plating, pits and blowholes do not occur because the surrounding space is sufficient, but if it exceeds 55%, the space and the amount of zinc vapor generated will reduce the pits and blowholes. It is believed that the resulting limit has been reached.
【００１４】亜鉛亜鉛系めっき鋼板としては、亜鉛めっ
きおよび亜鉛系合金めっきなどの亜鉛系めっきままで
も、潤滑や耐食性の向上を目的とした有機、無機あるい
はこれらの混合した被覆を施したものでもよい。亜鉛系
めっき鋼板は、各種形状に成形された後に溶接されるこ
とが多い。以上述べた亜鉛系めっき鋼板への耐食性金属
の本発明法による分散付着には、成形されたすなわち溶
接前の部品状態の亜鉛系めっき鋼板も含まれる。The zinc-zinc coated steel sheet may be a zinc-based coating such as zinc-plated or zinc-based alloy-plated, or may be an organic or inorganic coating or a mixture thereof for the purpose of improving lubrication and corrosion resistance. . Galvanized steel sheets are often welded after being formed into various shapes. The above-described dispersion adhesion of the corrosion-resistant metal to the galvanized steel sheet according to the present invention includes a galvanized steel sheet which is formed, that is, in a component state before welding.
【００１５】[0015]
【実施例】次に、本発明の方法の実施例を比較例ととも
に挙げる。表１及び表２にこれらの各種評価結果をまと
めて示した。レーザ溶接はすべてCO2 レーザ溶接で出力
５KW、溶接速度３m/min で実施した。レーザ溶接性の評
価は、目視でビード部を観察した。判定基準は表３に示
すとおりである。Next, working examples of the method of the present invention will be described together with comparative examples. Tables 1 and 2 collectively show the results of these various evaluations. All laser welding was performed by CO 2 laser welding at an output of 5 KW and a welding speed of 3 m / min. For evaluation of laser weldability, a bead portion was visually observed. The criteria are as shown in Table 3.
【００１６】[0016]
【表１】各種評価結果 [Table 1] Various evaluation results
【００１７】[0017]
【表２】（表１のつづき） [Table 2] (continuation of Table 1)
【００１８】[0018]
【表３】 [Table 3]
【００１９】耐食性の評価は以下のように実施した。 （１）試験片の作製 図２、図３に示す試験片を、下側板である亜鉛系めっき
鋼板１’（少なくとも内面は亜鉛系めっき）と、下側板
である一側が曲がり部７とされた亜鉛系めっき鋼板１’
（少なくとも内面は亜鉛系めっき）とによりレーザ溶接
で作製した。なお、図３において、９はレーザ溶接線を
示す。これを、以下の自動車用に一般的に用いられる下
記のような工程で塗装試験片に作り上げた。 脱脂→りん酸亜鉛化成処理→カチオン型電着塗装（膜厚
２０μm ねらい） （２）腐食試験の実施 腐食試験は、試験片を鋼板の曲がり部を上面の上側にし
て屋外に南面１０度に傾けて設置した後、５mass％のNa
Cl水溶液を１回／週噴霧し、その他の期間はそのまま放
置した。 （３）耐食性の評価 耐食性の評価は、１年間の屋外放置後の試験片を解体
し、内面側の溶接先端部より左右10mm幅、鋼板重ね部中
心点から上下30mmの範囲における赤錆発生率で評価し
た。判定基準は下記の表４に示すとおりである。The corrosion resistance was evaluated as follows. (1) Preparation of test piece The test piece shown in FIGS. Galvanized steel sheet 1 '
(At least the inner surface was zinc-based plating) by laser welding. In FIG. 3, reference numeral 9 denotes a laser welding line. This was made into a painted test piece by the following steps generally used for automobiles as described below. Degreasing → Zinc phosphate conversion treatment → Cationic electrodeposition coating (Aiming for a film thickness of 20 μm) (2) Conducting a corrosion test In a corrosion test, tilt the test piece outdoors to the south at 10 ° with the bent part of the steel plate above the upper surface. 5% by mass of Na
The Cl aqueous solution was sprayed once / week, and was left as it was for the rest of the period. (3) Evaluation of corrosion resistance The corrosion resistance was evaluated by disassembling the test piece after leaving it outdoors for one year, and measuring the red rust occurrence rate within a range of 10 mm width from the welding tip on the inner side and 30 mm above and below the center point of the steel sheet overlap. evaluated. The criteria are as shown in Table 4 below.
【００２０】[0020]
【表４】 [Table 4]
【００２１】表１及び表２によれば、本発明材では、重
ねレーザ溶接性が良好であると同時に、耐食性試験で
も、正常に隙間なく密着作製された場合と同等の結果を
示していることがわかる。一方、本発明をはずれる範囲
では、重ねレーザ溶接性が不満足であるか、耐食性が不
足する結果となっている。バインダーの中でも特に油の
それも引火点が低いものがよりレーザ溶接性が優れた結
果となっている。これは、レーザ照射時に有機物は燃焼
し、亜鉛蒸気の逃げ場を作る能力があること、油はそも
そも燃焼しやすく、この能力が特に高いためと考えられ
る。According to Tables 1 and 2, the material of the present invention has good lap laser weldability, and at the same time, in the corrosion resistance test, shows the same result as in the case where the device is normally manufactured without any gaps. I understand. On the other hand, in the range deviating from the present invention, the lap laser weldability is unsatisfactory or the corrosion resistance is insufficient. Among the binders, those having a low flash point, especially those of oil, have the more excellent laser weldability. This is presumably because organic substances burn during laser irradiation and have the ability to create an escape for zinc vapor, and oil easily burns in the first place, and this ability is particularly high.
【００２２】[0022]
【発明の効果】本発明によれば、亜鉛系めっき鋼板を２
枚以上重ねて密着した状態で溶接してもスパッタの発生
が少なくピット、ブローホールや溶接ビードの溶け落ち
等の溶接欠陥が少なく、安定した溶接品質が得られる。
かつ隙間なしの場合と同等以上の耐食性が得られる。こ
れによって、本来高い耐食性を必要としつつ、重ねレー
ザ溶接するべき部位を目的にあわせて製造することが可
能となる。According to the present invention, a zinc-coated steel sheet can be used
Even when two or more sheets are welded in close contact with each other, there is little generation of spatter, and there are few welding defects such as pits, blow holes and burn-through of weld beads, and stable welding quality can be obtained.
In addition, corrosion resistance equal to or higher than that without a gap is obtained. As a result, it is possible to manufacture a portion to be subjected to lap laser welding according to the purpose, while originally requiring high corrosion resistance.
【図１】 本発明の方式による、耐食性金属を溶接必要
部位に分散付着させるイメージを説明する斜視図。FIG. 1 is a perspective view illustrating an image in which a corrosion-resistant metal is dispersed and adhered to a portion requiring welding according to the method of the present invention.
【図２】 耐食性試験用サンプルイメージを説明する断
面図。FIG. 2 is a cross-sectional view illustrating a sample image for a corrosion resistance test.
【図３】 耐食性試験用サンプルイメージを説明する平
面図。FIG. 3 is a plan view illustrating a sample image for a corrosion resistance test.
１ 亜鉛系めっき鋼板 １’亜鉛系めっき鋼板（少なくとも内面は亜鉛系めっ
き） ２ スプレーノズル ３ バインダーと混合した耐食性金属スプレー ４ バインダーに分散した耐食性金属 ７ 耐食性試験用サンプルの上側板の曲がり部 ９ 耐食性試験用サンプルのレーザ溶接線DESCRIPTION OF SYMBOLS 1 Galvanized steel sheet 1 'Galvanized steel sheet (at least the inner surface is galvanized) 2 Spray nozzle 3 Corrosion-resistant metal spray mixed with binder 4 Corrosion-resistant metal dispersed in binder 7 Bent part of upper plate of corrosion resistance test sample 9 Corrosion resistance Laser welding line of test sample
───────────────────────────────────────────────────── フロントページの続き (72)発明者 仲澤 眞人 愛知県東海市東海町５−３ 新日本製鐵株 式会社名古屋製鐵所内 Ｆターム(参考） 4E068 BA06 BF00 DB01 DB15 ────────────────────────────────────────────────── ─── Continued on the front page (72) Inventor Masato Nakazawa 5-3 Tokai-cho, Tokai-shi, Aichi F-term in Nippon Steel Corporation Nagoya Works (reference) 4E068 BA06 BF00 DB01 DB15
Claims (5)
接をする部位に耐食性金属を、バインダーに混ぜて塗布
することを特徴とする、耐食性に優れた亜鉛系めっき鋼
板の重ね合わせレーザ溶接方法。1. A method for laser welding of zinc-coated galvanized steel sheets having excellent corrosion resistance, wherein a corrosion-resistant metal is mixed with a binder and applied to at least a portion of the galvanized steel sheet where laser welding is to be performed.
する、請求項１記載の耐食性に優れた亜鉛系めっき鋼板
の重ね合わせレーザ溶接方法。2. The method according to claim 1, wherein the corrosion-resistant metal is zinc.
n,Pb,Pの１種または２種以上を含み、残部が亜鉛である
ことを特徴とする、請求項１記載の耐食性に優れた亜鉛
系めっき鋼板の重ね合わせレーザ溶接方法。3. The corrosion-resistant metal is Fe, Ni, Al, Mg, Co, Mn, Si, S
2. The method for laser welding of superposed galvanized steel sheets having excellent corrosion resistance according to claim 1, wherein one or more of n, Pb, and P are contained, and the balance is zinc.
る、請求項１〜３のいずれかに記載の耐食性に優れた亜
鉛系めっき鋼板の重ね合わせレーザ溶接方法。4. The method according to claim 1, wherein the binder is an oil.
特徴とする、請求項４記載の耐食性に優れた亜鉛系めっ
き鋼板の重ね合わせレーザ溶接方法。5. The method according to claim 4, wherein the flash point of the oil is 100 ° C. or lower.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2001172449A JP2002361461A (en) | 2001-06-07 | 2001-06-07 | Method for lap welding with laser beam of zinc-based plated steel plates giving excellent corrosion resistance |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2001172449A JP2002361461A (en) | 2001-06-07 | 2001-06-07 | Method for lap welding with laser beam of zinc-based plated steel plates giving excellent corrosion resistance |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JP2002361461A true JP2002361461A (en) | 2002-12-18 |
Family
ID=19014068
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2001172449A Withdrawn JP2002361461A (en) | 2001-06-07 | 2001-06-07 | Method for lap welding with laser beam of zinc-based plated steel plates giving excellent corrosion resistance |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2002361461A (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2003290955A (en) * | 2002-04-03 | 2003-10-14 | Toyota Motor Corp | Laser welding method for surface treated steel sheet |
| JP2004344919A (en) * | 2003-05-21 | 2004-12-09 | Yaskawa Electric Corp | Laser beam welding device |
| EP1757399A1 (en) * | 2005-08-25 | 2007-02-28 | Volkswagen Aktiengesellschaft | Process of laser welding for joining two materials by applying a powder for creating a gap between the two materials, with at least one coated material |
| JP2008161936A (en) * | 2006-12-04 | 2008-07-17 | Nissan Motor Co Ltd | Laser welding method for surface treated steel sheet, fixing apparatus for bead-shaped gap material used therefor, and laser welding implement |
| US7820939B2 (en) * | 2004-07-27 | 2010-10-26 | The Regents Of The University Of Michigan | Zero-gap laser welding |
| KR20190013738A (en) * | 2016-05-18 | 2019-02-11 | 닛신 세이코 가부시키가이샤 | Laser cutting method of coated steel sheet, laser cutting processing product, heat cutting processing method, heat cutting processing product, surface treated steel plate, laser cutting method and laser processing head |
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2001
- 2001-06-07 JP JP2001172449A patent/JP2002361461A/en not_active Withdrawn
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2003290955A (en) * | 2002-04-03 | 2003-10-14 | Toyota Motor Corp | Laser welding method for surface treated steel sheet |
| JP2004344919A (en) * | 2003-05-21 | 2004-12-09 | Yaskawa Electric Corp | Laser beam welding device |
| US7820939B2 (en) * | 2004-07-27 | 2010-10-26 | The Regents Of The University Of Michigan | Zero-gap laser welding |
| EP1757399A1 (en) * | 2005-08-25 | 2007-02-28 | Volkswagen Aktiengesellschaft | Process of laser welding for joining two materials by applying a powder for creating a gap between the two materials, with at least one coated material |
| JP2008161936A (en) * | 2006-12-04 | 2008-07-17 | Nissan Motor Co Ltd | Laser welding method for surface treated steel sheet, fixing apparatus for bead-shaped gap material used therefor, and laser welding implement |
| KR20190013738A (en) * | 2016-05-18 | 2019-02-11 | 닛신 세이코 가부시키가이샤 | Laser cutting method of coated steel sheet, laser cutting processing product, heat cutting processing method, heat cutting processing product, surface treated steel plate, laser cutting method and laser processing head |
| KR102148290B1 (en) * | 2016-05-18 | 2020-08-26 | 닛테츠 닛신 세이코 가부시키가이샤 | Laser cutting processing method of plated steel sheet, laser cutting processing product, thermal cutting processing method, thermal cutting processing product, surface-treated steel sheet, laser cutting method and laser processing head |
| US10759005B2 (en) | 2016-05-18 | 2020-09-01 | Amada Holdings Co., Ltd. | Laser cutting and machining method for plated steel plate, laser cut-and-machined product, thermal cutting and machining method, thermal cut-and-machined product, surface-treated steel plate, laser cutting method, and laser machining head |
| US11559857B2 (en) | 2016-05-18 | 2023-01-24 | Amada Co., Ltd. | Laser cutting and machining method for plated steel plate, laser cut-and-machined product, thermal cutting and machining method, thermal cut-and-machined product, surface-treated steel plate, laser cutting method, and laser machining head |
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