JP3383444B2 - Laser welding method - Google Patents
Laser welding methodInfo
- Publication number
- JP3383444B2 JP3383444B2 JP28058294A JP28058294A JP3383444B2 JP 3383444 B2 JP3383444 B2 JP 3383444B2 JP 28058294 A JP28058294 A JP 28058294A JP 28058294 A JP28058294 A JP 28058294A JP 3383444 B2 JP3383444 B2 JP 3383444B2
- Authority
- JP
- Japan
- Prior art keywords
- welding
- weld metal
- gas
- toughness
- laser welding
- 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.)
- Expired - Fee Related
Links
Description
【０００１】[0001]
【産業上の利用分野】この発明は、レーザビームによる
溶接において、高じん性溶接金属が得られるレーザ溶接
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 laser welding method capable of obtaining a high toughness weld metal in laser beam welding.
【０００２】レーザビームは光学系装置を介して高エネ
ルギ密度を提供することができ、電子ビームとともに熱
加工、特に溶接加工に適しその熱源として注目されてい
る。そして、このレーザビームは電子ビームのように真
空雰囲気とする必要がなく、大気中で熱加工できるとい
う大きな利点を有している。しかしながら、発振される
レーザビームの出力が小さかった（高々10kw）ことか
ら、レーザ溶接はこれまで主として薄板の溶接に適用さ
れていた。A laser beam can provide a high energy density through an optical system device, and is attracting attention as a heat source suitable for thermal processing, particularly welding processing together with an electron beam. This laser beam does not need to be in a vacuum atmosphere like an electron beam, and has a great advantage that it can be thermally processed in the atmosphere. However, since the output of the oscillated laser beam was small (up to 10 kw), laser welding has hitherto been mainly applied to the welding of thin plates.
【０００３】しかるに、最近レーザ発振器のハード面の
開発が進み、60kwもの大出力CO2 レーザ発振管の実用化
も可能となってきて、薄板のみならず厚板の溶接にもレ
ーザ溶接の適用が検討されはじめている。Recently, however, the development of the hard side of the laser oscillator has progressed, and it has become possible to put a high output CO 2 laser oscillator tube of 60 kw into practical use. Laser welding can be applied not only to thin plates but also to thick plates. It is being considered.
【０００４】一方、このレーザ溶接は、レーザビームが
高エネルギー密度を有しているため深溶込みには有利で
あるが、溶接後の冷却速度が従来のアーク溶接に比し非
常に大きいため、溶接金属は急冷され、アーク溶接金属
の成分設計のままでは硬度が高すぎ、厚板の構造物に適
用するとその溶接金属のじん性が低すぎて実用に耐えら
れないものとなる。したがって、高じん性溶接金属が得
られるレーザ溶接方法の開発が急務となっている。On the other hand, this laser welding is advantageous for deep penetration because the laser beam has a high energy density, but since the cooling rate after welding is much higher than that of conventional arc welding, The weld metal is rapidly cooled, and the hardness is too high if the composition design of the arc weld metal is as it is, and if applied to the structure of a thick plate, the toughness of the weld metal is too low to be practically used. Therefore, there is an urgent need to develop a laser welding method capable of obtaining a high toughness weld metal.
【０００５】なお、電子ビーム溶接の場合に上記と同様
に生じるじん性の劣化は、溶接後に熱処理を施してじん
性の回復をはかるなどの対策がとられているが、エネル
ギーや工数の増大は避けられないという大きな問題を有
していた。Regarding the deterioration of toughness which occurs in the same manner as in the case of electron beam welding, measures such as heat treatment after welding to recover the toughness are taken, but energy and man-hours are not increased. It had a big problem of being unavoidable.
【０００６】[0006]
【従来の技術】従来のアーク溶接金属の組成をレーザ溶
接金属組成とした場合には、前記したように溶接時の冷
却速度の著しい違いにより、溶接ままの状態では高じん
性の溶接金属を得ることが期待できず、溶接後の熱処理
によってのみ高じん性を付与する方法しかないという問
題があった。2. Description of the Related Art When the composition of a conventional arc weld metal is a laser weld metal composition, a highly tough weld metal is obtained in the as-welded state due to the marked difference in cooling rate during welding as described above. However, there is a problem that there is only a method of imparting high toughness only by heat treatment after welding.
【０００７】この問題を解決する手段としては、例え
ば、特開平 5−185280号公報（レーザ溶接用ワイヤ）
に、溶接ワイヤの成分組成とじん性との関係について検
討した結果として、炭素当量が低く、かつＢとTiまたは
Zrとを複合添加したワイヤを用いることにより溶接金属
のじん性を改善する技術が提案開示されている。すなわ
ちこの技術は、レーザ溶接時の溶接金属の焼入れ性を低
下させる目的で炭素当量の低い溶接フィラーワイヤを用
い、かつ溶接金属の組織を微細なアシキュラーフェライ
トにすることを目的にＢとTiまたはZrを同時にワイヤか
ら添加するものである。As a means for solving this problem, for example, Japanese Unexamined Patent Publication No. 5-185280 (laser welding wire)
As a result of examining the relationship between the composition of the welding wire and the toughness, the carbon equivalent was low and B and Ti or
A technique for improving the toughness of a weld metal by using a wire to which Zr is added in combination has been proposed and disclosed. That is, this technique uses a weld filler wire having a low carbon equivalent for the purpose of reducing the hardenability of the weld metal during laser welding, and uses B and Ti or B or Ti for the purpose of making the structure of the weld metal a fine acicular ferrite. Zr is added simultaneously from the wire.
【０００８】しかしながら、レーザ溶接の場合にはかか
るフィラーワイヤを用いて溶接しても、母材による希釈
率が著しく大きいため、母材とワイヤとの成分組成の差
異が大きい場合には、溶接金属の成分組成の調整が困難
になるばかりでなく、溶込み深さの変動による溶接金属
の成分組成の変動が大きくなり、均質な溶接金属を得る
ことは期待できない。However, in the case of laser welding, even if such filler wire is used for welding, the dilution ratio by the base material is extremely large. Therefore, when the difference in the composition between the base material and the wire is large, the weld metal Not only is it difficult to adjust the component composition of No. 1, but the composition of the weld metal also fluctuates due to changes in the penetration depth, and it is not possible to expect a uniform weld metal to be obtained.
【０００９】また、溶接金属の凝固時における冷却速度
が著しく大きいため、溶融部は十分に攪拌されないまま
凝固するため、溶込み深さが深い場合には、溶融したフ
ィラーワイヤは溶接ビードの下部まで達しないまま凝固
してしまい、溶接金属全体にわたって期待した成分組成
にすることは極めて困難であるなどの問題があった。Further, since the cooling rate at the time of solidification of the weld metal is remarkably high, the molten portion solidifies without being sufficiently stirred. Therefore, when the penetration depth is deep, the molten filler wire reaches the lower part of the welding bead. There was a problem that it solidified without reaching it, and it was extremely difficult to obtain the expected component composition over the entire weld metal.
【００１０】[0010]
【発明が解決しようとする課題】この発明は、前記した
問題点を有利に解決し、溶接ままでも安定して溶接金属
全体にわたって優れるじん性が得られるレーザ溶接方法
を提案することを目的とする。SUMMARY OF THE INVENTION It is an object of the present invention to propose a laser welding method which solves the above-mentioned problems, and which can stably obtain excellent toughness throughout the weld metal as it is. .
【００１１】[0011]
【課題を解決するための手段】従来の実用性を考慮した
アーク溶接金属の冷却速度は、溶接金属の組織に関与す
る 800〜500 ℃の温度範囲においては高々30℃/s程度で
あり、ほとんどの場合10〜５℃/sの範囲であるのに対
し、レーザ溶接の場合の冷却速度は1000℃/sにも達し、
10mm以上の溶込みを得る条件下においても 100℃/s程度
になる。[Means for Solving the Problems] The cooling rate of the arc weld metal in consideration of the conventional practicability is at most about 30 ° C / s in the temperature range of 800 to 500 ° C, which is related to the structure of the weld metal. In the case of, the cooling rate in the case of laser welding reaches 1000 ° C / s, while it is in the range of 10-5 ° C / s.
Even under the condition that a penetration of 10 mm or more is obtained, it will be about 100 ° C / s.
【００１２】このような急速冷却溶接金属のじん性に関
して鋭意実験・検討を重ねた結果、溶接のままで高じん
性溶接金属を得ることができるレーザ溶接方法を見出
し、この発明を達成したものである。すなわち、この発
明の要旨とするところは以下のとおりである。As a result of intensive experiments and studies on the toughness of such a rapidly cooled weld metal, a laser welding method capable of obtaining a high toughness weld metal as-welded was found and the present invention has been achieved. is there. That is, the gist of the present invention is as follows.
【００１３】 成分組成において、下記式(1) であら
わされるPcm 値が0.05〜0.20wt％の範囲にあり、かつTi
を0.01〜0.50wt％の範囲で含有する鋼材を溶接母材と
し、O2：１〜10％を含むArガス、O2：１〜10％を含むHe
ガス、CO2 ：５〜50％を含むArガス、CO2 ：５〜50％を
含むArガスまたは空気のうちから選んだ１種を雰囲気ガ
スとして、レーザビームによる溶接を行うことを特徴と
するレーザ溶接方法である（第１発明）。
〔記〕
Pcm wt％＝C wt％＋Siwt％／30＋Mnwt％／20＋Crwt％／20＋Niwt％／60＋Mowt
％／15＋V wt％／10＋5Bwt％＋Cuwt％／20 ‥‥ (1)In the component composition, the Pcm value represented by the following formula (1) is in the range of 0.05 to 0.20 wt%, and Ti
Was a steel containing a weld base metal in the range of 0.01~0.50wt%, O 2: Ar gas containing 1~10%, O 2: He containing 1-10%
Gas, CO 2: Ar gas containing 5-50%, CO 2: as Ar gas or one atmospheric gas chosen from among air containing 5-50%, and carrying out welding by laser beam This is a laser welding method (first invention). [Note] Pcm wt% = C wt% + Siwt% / 30 + Mnwt% / 20 + Crwt% / 20 + Niwt% / 60 + Mowt% / 15 + V wt% / 10 + 5Bwt% + Cuwt% / 20 (1)
【００１４】 溶接母材とする鋼材と同じ成分組成の
フィラーワイヤを用いる第１発明に記載のレーザ溶接方
法である（第２発明）。The laser welding method according to the first invention uses a filler wire having the same composition as the steel material as the welding base material (second invention).
【００１５】[0015]
【作用】この発明の作用効果を実験例をもとにして以下
に述べる。レーザ溶接のように急速冷却される溶接金属
でじん性が低下する原因は強烈な焼入れ効果によって、
溶接金属組織がマルテンサイト組織のみになることであ
る。The operation and effect of the present invention will be described below based on experimental examples. The cause of the deterioration of toughness in the weld metal that is rapidly cooled like laser welding is due to the strong quenching effect.
The weld metal structure is only a martensite structure.
【００１６】そこで、大気中にてレーザ溶接を行い、レ
ーザ溶接を行った鋼材の前記(1) 式に示したPcm 値とそ
の溶接金属のじん性（０℃におけるシャルピー衝撃吸収
エネルギー）との関係を調査し、表１に示す結果を得
た。Therefore, the relationship between the Pcm value shown in the above equation (1) and the toughness of the weld metal (Charpy impact absorption energy at 0 ° C.) of the steel material laser-welded in the atmosphere Was investigated and the results shown in Table 1 were obtained.
【００１７】[0017]
【表１】 [Table 1]
【００１８】表１から明らかなように、Pcm 値が0.07〜
0.16wt％の鋼材の溶接金属の衝撃吸収エネルギーは３ k
gf・ｍ以上の値を示しているが、十分なじん性とはいい
難く、また、その他のPcm 値の鋼材では、衝撃吸収エネ
ルギーは著しく低い値を示している。しかしながら、こ
の結果は、溶接金属のじん性向上にはPcm 値を特定する
ことが有効であることを示唆している。As is clear from Table 1, the Pcm value is 0.07-
Impact absorption energy of 0.16 wt% steel weld metal is 3 k
Although it shows a value of gf · m or more, it is difficult to say that it has sufficient toughness, and steel materials with other Pcm values show extremely low values for impact absorption energy. However, this result suggests that specifying the Pcm value is effective for improving the toughness of the weld metal.
【００１９】そこで、さらに実験・検討を重ねた結果、
Tiを含有させた鋼材を酸化性雰囲気でレーザ溶接するこ
とによって、急速冷却される溶接金属であっても、高じ
ん性のアシキュラーフェライト組織を析出させることが
可能であり、また、このことによって溶接金属のじん性
も飛躍的に向上することを見出した。Therefore, as a result of further experiments and examinations,
By laser welding a steel material containing Ti in an oxidizing atmosphere, it is possible to precipitate a highly tough acicular ferrite structure even in the case of a weld metal that is rapidly cooled. It has been found that the toughness of the weld metal is also dramatically improved.
【００２０】これらの実験結果として、鋼材のPcm 値と
Ti含有量とを変化させ、酸化性雰囲気として５％O2−Ar
のシールドガスを使用してレーザ溶接したときの、溶接
金属のじん性（シャルピー衝撃吸収エネルギー）を表２
にまとめて示す。As a result of these experiments, the Pcm value of steel and
By changing the Ti content, an oxidizing atmosphere of 5% O 2 -Ar
Table 2 shows the toughness of the weld metal (Charpy impact absorption energy) when laser welding using the shielding gas of
Are shown together.
【００２１】[0021]
【表２】 [Table 2]
【００２２】表２から明らかなように、鋼材のPcm 値が
0.05〜0.20wt％の範囲で、かつTiを0.01wt％以上含有さ
せることによって、十分に優れるじん性を有する溶接金
属が得られる。しかしTiは、0.50wt％を超えて含有させ
てもそれ以上の効果は期待できない。したがって、この
発明においては、レーザ溶接母材とする鋼材について、
Pcm値は、0.05wt％以上、0.20wt％以下とし、Tiは、そ
の含有量を0.01wt％以上、0.50wt％以下とする。As is clear from Table 2, the Pcm value of steel is
By containing Ti in an amount of 0.05 to 0.20 wt% and 0.01 wt% or more, a weld metal having sufficiently excellent toughness can be obtained. However, if Ti is contained in excess of 0.50 wt%, no further effect can be expected. Therefore, in the present invention, regarding the steel material as the laser welding base material,
The Pcm value is 0.05 wt% or more and 0.20 wt% or less, and the Ti content is 0.01 wt% or more and 0.50 wt% or less.
【００２３】つぎに、このようなTi添加の効果が発揮で
きる雰囲気ガス組成について述べる。最も工業的に酸化
性雰囲気を提供できるO2またはCO2 を含有するガスにつ
いて実験・検討を行った。O2またはCO2 ガスの容積率を
変化させたArまたはHeガスを雰囲気ガス（シールドガ
ス）として、Pcm 値が0.05wt％および0.20wt％でTiが0.
01wt％含有する鋼材のレーザ溶接を行ったそれぞれの溶
接金属について、じん性や介在物および欠陥の有無など
を調査した。Next, the atmosphere gas composition that can exert such an effect of adding Ti will be described. Experiments and studies were conducted on the gas containing O 2 or CO 2 that can provide the oxidizing atmosphere most industrially. When Ar or He gas with varying volume ratio of O 2 or CO 2 gas is used as an atmosphere gas (shield gas), Pcm values are 0.05 wt% and 0.20 wt% and Ti is 0.
The toughness, presence of inclusions and defects were investigated for each weld metal obtained by laser welding of steel containing 01 wt%.
【００２４】この結果、O2含有ガスの場合、含有するO2
が、１％未満では上記したTi添加による溶接金属のじん
性向上効果が期待できず、10％を超えると溶接金属中に
酸化物系の介在物が増加してじん性は逆に低下し、さら
に溶接欠陥も多く発生した。したがって、O2を含有する
ArまたHeガスの場合、O2含有量は１〜10％の範囲とす
る。In the case of this result, O 2 containing gas, O 2 containing
However, if it is less than 1%, the effect of improving the toughness of the weld metal due to the addition of Ti described above cannot be expected, and if it exceeds 10%, the oxide-based inclusions increase in the weld metal and the toughness decreases conversely. Furthermore, many welding defects occurred. Therefore, it contains O 2.
In the case of Ar or He gas, the O 2 content is in the range of 1 to 10%.
【００２５】また、CO2 含有ガスの場合、含有するCO2
が５％未満ではTi添加のじん性向上効果が期待できず、
50％を超えると上記と同様介在物によってじん性は低下
し欠陥の発生も多くなった。したがって、CO2 を含有す
るArまたはHeガスの場合、CO 2 含有量は５％〜50％の範
囲とする。Also, CO2CO contained in the case of contained gas2
Is less than 5%, the toughness improving effect of Ti addition cannot be expected,
If it exceeds 50%, the toughness decreases due to inclusions as above.
The number of defects also increased. Therefore, CO2Contains
CO for Ar or He gas 2Content is in the range of 5% to 50%
Surround
【００２６】さらに、酸化性雰囲気ガスとして空気（大
気）についても上記と同様の調査を行った。この結果空
気を雰囲気ガスとして用いても十分にTi添加の効果が発
揮できることが分った。Further, the same investigation as above was conducted for air (atmosphere) as the oxidizing atmosphere gas. As a result, it was found that the effect of Ti addition can be sufficiently exhibited even when air is used as the atmospheric gas.
【００２７】一方、上記した実験ではフィラーワイヤを
使用していないため、溶接金属内の成分組成の変動は全
くないことは当然であるが、溶接母材とする鋼材と同じ
成分組成系（共金など）のフィラーワイヤであれば、フ
ィラーワイヤを用いても成分組成の変動のない均質な組
織の溶接金属が得られることも確認した。On the other hand, in the above experiment, since no filler wire is used, it is natural that the composition of the composition in the weld metal does not change at all. It was also confirmed that a weld metal having a uniform structure with no change in the composition of components can be obtained by using the filler wire of (1) or the like.
【００２８】[0028]
【実施例】表３、表４および表５に示す種々の成分組成
になる鋼板を溶接母材として、同じく表３、表４および
表５に示す種々の雰囲気ガスを用いてレーザ溶接を施し
たこの発明の適合例と比較例について、じん性（０℃に
おけるシャルピー衝撃吸収エネルギーvEo ）を調査し、
それぞれ表３、表４および表５に併記した。EXAMPLES Laser welding was carried out using steel plates having various compositional compositions shown in Tables 3, 4, and 5 as welding base materials and various atmospheric gases also shown in Tables 3, 4 and 5. The toughness (Charpy impact absorption energy vEo at 0 ° C.) of the conformity example and the comparative example of the present invention was investigated,
They are also shown in Table 3, Table 4 and Table 5, respectively.
【００２９】[0029]
【表３】 [Table 3]
【００３０】[0030]
【表４】 [Table 4]
【００３１】[0031]
【表５】 [Table 5]
【００３２】ここで、上記のレーザ溶接条件は以下のと
おりである。
・レーザ出力：10kw
・溶接速度：２m/min
・ビームモード：低次マルチモード
・パラボリックミラー：ｆ＝10in
・板厚：20mmHere, the above laser welding conditions are as follows.・ Laser output: 10kw ・ Welding speed: 2m / min ・ Beam mode: Low-order multimode ・ Parabolic mirror: f = 10in ・ Plate thickness: 20mm
【００３３】表３、表４および表５から明らかなよう
に、鋼材のTi含有量、Pcm 値さらには溶接雰囲気ガスが
この発明の限定範囲を外れる比較例では良好なじん性が
得られていない。これらの比較例に対し、この発明の適
合例はフィラーワイヤを使用したものも含めて全て優れ
るじん性を示し、とくに試料No.17や19などのようにCr,
Ni, MoおよびＶなどの強化成分を含有する高張力鋼であ
っても優れるじん性を示していて、このような高張力鋼
にもこの発明が有利に適用できることを示している。As is clear from Tables 3, 4, and 5, good toughness is not obtained in Comparative Examples in which the Ti content, Pcm value, and welding atmosphere gas of the steel material deviate from the limits of the present invention. In contrast to these comparative examples, the conforming examples of the present invention all exhibit excellent toughness, including those using a filler wire, and especially Cr, such as sample No. 17 and 19,
Even high-strength steels containing strengthening components such as Ni, Mo and V show excellent toughness, and it is shown that the present invention can be advantageously applied to such high-strength steels.
【００３４】このようにこの発明の適合例は、いずれの
場合も十分なじん性が得られるとともに、ブロフォール
や溶接割れ等の溶接欠陥のない健全な溶接金属が得られ
ることも確認できた。したがって、これらの適合例は構
造物の溶接継手として十分実用化できる特性を有してい
る。As described above, it has been confirmed that the conformity examples of the present invention can obtain sufficient toughness in any case and can obtain a sound weld metal without welding defects such as Blofor and weld crack. Therefore, these adapted examples have the characteristics that they can be sufficiently put into practical use as welded joints for structures.
【００３５】[0035]
【発明の効果】この発明は、大出力CO2 レーザ溶接機の
出現によって大いに期待される厚板のレーザ溶接の実用
化において、溶接金属のじん性不足という材質面での問
題点を、溶接母材とする鋼材の成分設計と溶接雰囲気の
制御によって有利に解決し、溶接ままの状態でも全体に
わたり安定して十分なじん性を有するレーザ溶接金属が
得られるようにするものであり、この発明によれば、大
出力CO2 レーザ溶接機の産業界への適用範囲を飛躍的に
拡大し、レーザ溶接が有する最大の利点である低入熱、
高効率の溶接が、高じん性が要求される構造物の溶接に
も適用でき、工業的意義は極めて大きい。EFFECTS OF THE INVENTION The present invention has a problem in terms of material properties such as insufficient toughness of the weld metal in practical application of laser welding of thick plates, which is highly expected with the advent of a high-power CO 2 laser welding machine. The present invention is to solve the problems by designing the composition of the steel material to be used and controlling the welding atmosphere, and to obtain a laser-welded metal having stable and sufficient toughness even in the as-welded state. For example, the range of application of high-power CO 2 laser welders to the industrial world has been dramatically expanded, and low heat input, which is the greatest advantage of laser welding,
High-efficiency welding can also be applied to the welding of structures that require high toughness, and is of great industrial significance.
───────────────────────────────────────────────────── フロントページの続き (56)参考文献 特開 昭58−93592（ＪＰ，Ａ) 特公 平４−28474（ＪＰ，Ｂ２) (58)調査した分野(Int.Cl.7，ＤＢ名) B23K 26/00 - 26/40 ─────────────────────────────────────────────────── ─── Continuation of front page (56) References JP-A-58-93592 (JP, A) JP-B 4-28474 (JP, B2) (58) Fields investigated (Int.Cl. 7 , DB name) B23K 26/00-26/40
Claims (2)
されるPcm 値が0.05〜0.20wt％の範囲にあり、かつTiを
0.01〜0.50wt％の範囲で含有する鋼材を溶接母材とし、 O2：１〜10％を含むArガス、 O2：１〜10％を含むHeガス、 CO2 ：５〜50％を含むArガス、 CO2 ：５〜50％を含むHeガスまたは空気のうちから選ん
だ１種を雰囲気ガスとして、レーザビームによる溶接を
行うことを特徴とするレーザ溶接方法。 〔記〕 Pcm wt％＝C wt％＋Siwt％／30＋Mnwt％／20＋Crwt％／20＋Niwt％／60＋Mowt ％／15＋V wt％／10＋5Bwt％＋Cuwt％／20 ‥‥ (1)1. In the composition of components, the Pcm value represented by the following formula (1) is in the range of 0.05 to 0.20 wt%, and Ti is
Steel material contained in the range of 0.01 to 0.50 wt% is used as the welding base material, O 2 : 1 to 10% of Ar gas, O 2 : 1 to 10% of He gas, CO 2 : 5 to 50% of Ar gas, CO 2: as He gas or one atmospheric gas chosen from among air containing 5-50%, the laser welding method, which comprises carrying out the welding by laser beam. [Note] Pcm wt% = C wt% + Siwt% / 30 + Mnwt% / 20 + Crwt% / 20 + Niwt% / 60 + Mowt% / 15 + V wt% / 10 + 5Bwt% + Cuwt% / 20 (1)
ィラーワイヤを用いる請求項１に記載のレーザ溶接方
法。2. The laser welding method according to claim 1, wherein a filler wire having the same composition as the steel material used as the welding base material is used.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP28058294A JP3383444B2 (en) | 1994-11-15 | 1994-11-15 | Laser welding method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP28058294A JP3383444B2 (en) | 1994-11-15 | 1994-11-15 | Laser welding method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH08141763A JPH08141763A (en) | 1996-06-04 |
| JP3383444B2 true JP3383444B2 (en) | 2003-03-04 |
Family
ID=17627053
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP28058294A Expired - Fee Related JP3383444B2 (en) | 1994-11-15 | 1994-11-15 | Laser welding method |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3383444B2 (en) |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE19901900A1 (en) * | 1999-01-19 | 2000-07-20 | Linde Tech Gase Gmbh | Laser welding with process gas |
| DE19901898A1 (en) * | 1999-01-19 | 2000-07-20 | Linde Tech Gase Gmbh | Laser welding with process gas |
| JP4492028B2 (en) * | 2001-11-02 | 2010-06-30 | Ｊｆｅスチール株式会社 | Laser beam welded joint and method for manufacturing laser beam welded joint |
| CN103612011B (en) * | 2013-12-09 | 2016-01-20 | 钢铁研究总院 | A kind of method improving optical-fiber laser welded seam fusion penetration |
| DE102014005193A1 (en) * | 2014-04-08 | 2015-10-08 | Messer Group Gmbh | Method for CO2 laser welding of low-alloy steels |
| JP2022148017A (en) | 2021-03-24 | 2022-10-06 | 株式会社東芝 | Welding method |
-
1994
- 1994-11-15 JP JP28058294A patent/JP3383444B2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JPH08141763A (en) | 1996-06-04 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JP4336824B2 (en) | Submerged arc welding method for austenitic stainless steel | |
| JP2003220481A (en) | Method and welding wire for arc-laser composite welding | |
| JP3383444B2 (en) | Laser welding method | |
| KR20020027238A (en) | Large heat input submerged arc welding joint, method for producing the joint, steel wire for the submerged arc welding joint, and flux for the submerged arc welding joint | |
| JP3026899B2 (en) | Low hydrogen coated arc welding rod | |
| US4534793A (en) | Cast iron welding materials and method | |
| JPH04300092A (en) | Flux cored wire for carbon dioxide shielded arc welding for cr-mo steel | |
| JPS61253344A (en) | Steel plate for high heat input welding and its manufacture | |
| JP3407668B2 (en) | Shipbuilding steel plate with excellent laser weldability | |
| JP4438210B2 (en) | Laser welding joint of steel and laser welding method | |
| KR100651783B1 (en) | Tandem electro gas arc welding method | |
| JP4505076B2 (en) | Electron beam welding method for obtaining weld metal with excellent low temperature toughness | |
| JPH0242313B2 (en) | ||
| JP3455578B2 (en) | Welding method of ferritic stainless steel | |
| JP3351139B2 (en) | Welding method for low alloy high strength steel | |
| JPH05132719A (en) | Method for welding high carbon steel sheet or strip | |
| JP3881944B2 (en) | Welding material, welding method and welded joint | |
| JP2804973B2 (en) | MIG welding method for high Mn non-magnetic steel for cryogenic use | |
| JP3217567B2 (en) | Covered arc welding rod for high Cr ferritic heat resistant steel | |
| JP3740725B2 (en) | Filler material for laser welding of martensitic stainless steel | |
| JP4492028B2 (en) | Laser beam welded joint and method for manufacturing laser beam welded joint | |
| JP2812772B2 (en) | Laser welding method | |
| JP2004337871A (en) | Low hydrogen coated electrode for low-alloy heat-resistant steel | |
| JP2005324239A (en) | Wire for electro-slag welding | |
| JP5953647B2 (en) | Laser welded joint of steel material with excellent toughness of weld metal part and manufacturing method of laser beam welded joint of steel material with excellent toughness of weld metal part |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20071220 Year of fee payment: 5 |
|
| FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20081220 Year of fee payment: 6 |
|
| FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20091220 Year of fee payment: 7 |
|
| FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20091220 Year of fee payment: 7 |
|
| FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20101220 Year of fee payment: 8 |
|
| FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20101220 Year of fee payment: 8 |
|
| FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20111220 Year of fee payment: 9 |
|
| FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20121220 Year of fee payment: 10 |
|
| FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20121220 Year of fee payment: 10 |
|
| FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20131220 Year of fee payment: 11 |
|
| LAPS | Cancellation because of no payment of annual fees |