JPS58173095A - Method and device for laser welding - Google Patents

Method and device for laser welding

Info

Publication number
JPS58173095A
JPS58173095A JP57056461A JP5646182A JPS58173095A JP S58173095 A JPS58173095 A JP S58173095A JP 57056461 A JP57056461 A JP 57056461A JP 5646182 A JP5646182 A JP 5646182A JP S58173095 A JPS58173095 A JP S58173095A
Authority
JP
Japan
Prior art keywords
welding
laser beam
reflecting mirror
frame
irradiated
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.)
Granted
Application number
JP57056461A
Other languages
Japanese (ja)
Other versions
JPH027758B2 (en
Inventor
Yasuyuki Yoshida
康之 吉田
Koichi Wada
宏一 和田
Satoshi Suzuki
智 鈴木
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Mitsubishi Heavy Industries Ltd
Original Assignee
Mitsubishi Heavy Industries Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Mitsubishi Heavy Industries Ltd filed Critical Mitsubishi Heavy Industries Ltd
Priority to JP57056461A priority Critical patent/JPS58173095A/en
Publication of JPS58173095A publication Critical patent/JPS58173095A/en
Publication of JPH027758B2 publication Critical patent/JPH027758B2/ja
Granted legal-status Critical Current

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
    • B23K26/00—Working by laser beam, e.g. welding, cutting or boring
    • B23K26/08—Devices involving relative movement between laser beam and workpiece
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
    • B23K26/00—Working by laser beam, e.g. welding, cutting or boring
    • B23K26/08—Devices involving relative movement between laser beam and workpiece
    • B23K26/082—Scanning systems, i.e. devices involving movement of the laser beam relative to the laser head

Landscapes

  • Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Engineering & Computer Science (AREA)
  • Plasma & Fusion (AREA)
  • Mechanical Engineering (AREA)
  • Laser Beam Processing (AREA)

Abstract

PURPOSE:To obtain a defectless weld zone having no welding defect such as porosity, by receiving the laser beam irradiated on a material to be welded through a condenser lens with an oscillating reflecting mirror and welding the material while oscillating the focal position thereof in the weld line direction. CONSTITUTION:A laser beam 2 is irradiated through the 1st reflecting mirror 10, a condenser lens 11 and the 2nd reflecting mirror 12 together with a shielding gas to a material 1 to be welded. The mirror 12 is mounted on a holder 13 which is pinned freely turnably to a frame 14. A lever 15 is pinned freely rotatably to the frame 14, and the lever 15 is oscillated by the effect of an eccentric disc 17 and a spring 19 attached to the frame 14. The oscillation thereof is transmitted with a push bar 16 to the holder 13 and the reflecting mirror is oscillated in the direction of the arrows by said oscillation cooperatively with a spring 18 whereby the pierced hole 16 in the molten pool is elongated long in the weld line direction and the generation of porosity is prevented.

Description

【発明の詳細な説明】 及びその実施装置に係る。[Detailed description of the invention] and its implementation equipment.

従来通常のレーザ溶接方法は、第１図に示す如く、トー
チノズルｌの中央かラ高工不ルキレーザヒーム２を被溶
接月４に向けて照射するととｔ，に、その周囲からアル
ゴン、ヘリウムなどの不活性シールドカス３を噴射せし
め、溶接速行とともに溶融金属５か溶湯中υ穿孔６を埋
めて行くものであり、第２図に示す如く、レーザビーム
２は穿孔６内を多重反射し深い溶融域７を形成するので
、深溶込み溶接に好適である。In the conventional laser welding method, as shown in Fig. 1, when a highly engineered inorganic laser beam 2 is irradiated from the center of a torch nozzle 1 toward a target 4 to be welded, at t, impurities such as argon, helium, etc. are emitted from the surrounding area. The active shielding scum 3 is injected to fill the molten metal 5 or the υ perforation 6 in the molten metal as the welding speed increases.As shown in Fig. 2, the laser beam 2 is multiple-reflected inside the perforation 6 and forms a deep molten area. 7, it is suitable for deep penetration welding.

しかるにこのレーザ溶接方法は．１１図に示を如く穿孔
６が不昶則な形状をしているため、溶融金属５は穿孔６
を完全に埋めることができす、凝固金属８中に気孔９が
形成され易い欠点がある。However, this laser welding method... As shown in FIG. 11, since the perforation 6 has an irregular shape, the molten metal 5 is
However, there is a drawback that pores 9 are easily formed in the solidified metal 8.

本発明は、か＼る事情に鑑み、気孔などの溶接欠陥がな
く、かつ機械的性質良好な健全な溶接部を得るレーザ溶
接方法及び装置を提供することを目的とし、トーチノズ
ルからレーザビームを照射するとともにその周囲から不
活性カスを噴射して溶接を行うレーザヒーム溶接におい
て、レーザビームを溶接線方向にオシレートさせなから
溶接することを特徴とするレーザビーム溶接装置、及び
、その実施装置として、トーチノズルからレーザビーム
を照射するととｔ、にその周囲から不活性カスを噴射し
て溶接を行うレーザビーム溶接装置において、トーチノ
ズルから集光レンズを経て照射するレーザビームを受は
被溶接材に照射する反射鏡と、同反射鏡から照射される
レーザビームの焦へ位置を溶接線方向にオンレートさせ
るように同反射鏡に振動を賦ケーする手段とを具えてな
ることを特徴とするレーザビーム溶接装置を提□１案す
る。In view of the above circumstances, the present invention aims to provide a laser welding method and apparatus for obtaining a sound welded part free of welding defects such as pores and having good mechanical properties, and in which a laser beam is irradiated from a torch nozzle. In laser beam welding, in which welding is performed by injecting inert scum from the surrounding area, a laser beam welding device is characterized in that the laser beam is welded without being oscillated in the direction of the welding line, and a torch nozzle is used as its implementation device. In a laser beam welding device that performs welding by injecting inert scum from the surrounding area when a laser beam is irradiated, the laser beam irradiated from the torch nozzle via a condensing lens is reflected to irradiate the material to be welded. A laser beam welding device comprising: a mirror; and means for applying vibration to the reflecting mirror so that the focus position of the laser beam irradiated from the reflecting mirror is aligned in the direction of the welding line. Proposal □Make one proposal.

本か・明方法及び装置の一実施例を第３図及び第４図に
ついて詳細に説明する。One embodiment of the present invention method and apparatus is described in detail with respect to FIGS. 3 and 4.

第３図Ｑこおいて、レーザビーム２は第１反射鏡１０、
集光レンズ１１、第２反射鏡１２を経て被溶接材４にＩ
ｌｌ、　Ｊｌｌ＝Ｉされる。第２反射鏡】２はホルタ１
３に固定されており、ホルタ１３はフレーム］４に回転
自在にピンで結合されている。フレーム１４にはレバー
１５がこねも回転自在にピンで結合されている。またフ
レーム１４には偏口１軸で回転する円９Ａ１７か結合さ
れており、円盤１７は図では省略している小形モータに
より駆動され、ハイ・１９との作用でレバー１５を振動
させる。In FIG. 3Q, the laser beam 2 is transmitted through the first reflecting mirror 10,
I is applied to the material to be welded 4 through the condensing lens 11 and the second reflecting mirror 12.
ll, Jll=I is done. 2nd reflector] 2 is Holter 1
3, and the holter 13 is rotatably connected to the frame]4 with a pin. A lever 15 is rotatably coupled to the frame 14 with a pin. Further, a circle 9A17 that rotates around a single eccentric axis is connected to the frame 14, and the disk 17 is driven by a small motor (not shown in the figure), and vibrates the lever 15 by the action of the high gear 19.

レバー１５には押し棒１６カ固定さねている。レバー７
の振動は押し棒１６を介してホルタ１３へ伝達され、ハ
ネ１８との連係でホルダ１３は図示の如く矢印方向に振
動する。ホルダ１３及びそれに固定さねた反射鏡１２の
振動によりレーザビーム２は図示の如くオシレ−１・さ
れて被溶接材４に照射さ′Ｊ″する。A push rod 16 is fixed to the lever 15. Lever 7
The vibration is transmitted to the holder 13 via the push rod 16, and in conjunction with the spring 18, the holder 13 vibrates in the direction of the arrow as shown. Due to the vibration of the holder 13 and the reflecting mirror 12 fixed thereto, the laser beam 2 is oscillated as shown in the figure and is irradiated onto the workpiece 4 to be welded.

このヒームオル−トは上述の如き機械的方法以外に電磁
石等電気的方法で反射鏡を振動させても良いことば言う
までもない。Needless to say, in addition to the above-mentioned mechanical method, the reflector may be vibrated by an electrical method such as an electromagnet.

本発明のレーザ溶接において（ｊ、上記ヒームオンレー
ト枦能を用いて溶融池の挙動をコントロールしなから、
ヒームオンレート方向と溶接線方向を一致させて溶接を
行う。ヒームオシレ−１・により溶融池の挙動、特に穿
孔６がいかなるものになるかを第４図に示す。溶接線方
向のヒームオシレートのために溶融池内の穿孔６は溶接
線方向に長く引延ばされる形にｊｃす、壁面形状もなた
らグｒ・になる、この結果、先の第１図に示した穿孔を
溶融金属が完全に埋め得す今加蒸気がトラップされたこ
とにより発生する気孔は防止される。In the laser welding of the present invention (j, since the behavior of the molten pool is controlled using the above-mentioned heam-on-rate capability,
Welding is performed by matching the heel-on rate direction and the welding line direction. FIG. 4 shows the behavior of the molten pool, especially the perforation 6, due to the heel oscillator 1. Due to the heel oscillation in the welding line direction, the perforation 6 in the molten pool is elongated in the welding line direction, and the wall shape also becomes rough, as shown in Fig. 1 above. Now that the molten metal can completely fill the perforations, porosity caused by trapped steam is prevented.

以下本発１セ４方法の具体例を説明する。A specific example of the 1st 4th method of this invention will be explained below.

本発明方法の効果を調査するため下記条件で溶接試験を
行った。In order to investigate the effects of the method of the present invention, a welding test was conducted under the following conditions.

供試０’　ｉ　ＳＵＳ　３０４　、板厚１２ｍｍ溶接態
様、ヒ〜［・オンプレート溶接（部分溶込溶接） （５） 溶接条件、レーザ出力　ＣＯ２レーザ３ｋｗ溶接速度　
０．６　ｍ　／　ｍｉｎ ン−ルｌ−カスＨｅ　５０　４／ｍｉｎヒームオンレー
ト条件。Sample 0'i SUS 304, plate thickness 12mm, welding mode, h~[・On-plate welding (partial penetration welding) (5) Welding conditions, laser output CO2 laser 3kW welding speed
0.6 m/min Heme on rate condition.

ヒームオシレ−１・方向 溶接線方向 ヒームオシレート周波数 ０−３００Ｈｚ オシレート振幅　　Ｏ〜１０　ｍｍ 本試験結果では、気孔発生を防止或は大幅低減するには
ヒームオシレート周波数２０　Ｈｚ以上。Heam oscillation 1/Direction Weld line direction Heam oscillation frequency 0-300Hz Oscillation amplitude 0-10 mm According to the test results, to prevent or significantly reduce the generation of pores, the heel oscillation frequency is 20 Hz or higher.

同振幅２ｍｍ　　以上か必要であることが判明した。It was found that the same amplitude of 2 mm or more is required.

このオシレート条件範囲では先に述べたように溶融池内
の穿孔が第４図に示を如く溶接線方向に長く引き延ばさ
れ、金属蒸気がトラップされ蕪い開放形状になり気孔発
生が防１トされると考えられる。但しオンレート条件の
適正範囲は材質、溶接条ｆ’トにより異なり一律には規
定し得ない０ （６）In this oscillation condition range, as mentioned earlier, the perforations in the molten pool are elongated in the direction of the weld line as shown in Figure 4, trapping metal vapor and creating an open shape that prevents the generation of pores. It is thought that it will be done. However, the appropriate range of on-rate conditions varies depending on the material and welding strip, and cannot be uniformly specified. (6)

【図面の簡単な説明】[Brief explanation of the drawing]

第１図及び第２（３）は従来のレーザ溶接の要領図で、
第１図は溶接線に直交する方向から見た図、第２図は溶
接線方向から見た図である。第３図は本発明溶接方法の
一実施態様の要領図、第４図は同上におけるヒームオシ
レート状態の説明図である。 ２　レーザビーム、４　被溶接材、６　・穿孔、１０・
第１反射鏡、１］・集光レンズ、１２　　第２反射鏡、
１３　　ホルダ、１４　　フレーム、１５・　レバー、
１６・押し棒、１７・・制心円盤。 （７） 第２にFigures 1 and 2 (3) are diagrams of conventional laser welding.
FIG. 1 is a view seen from the direction perpendicular to the weld line, and FIG. 2 is a view seen from the weld line direction. FIG. 3 is a schematic diagram of one embodiment of the welding method of the present invention, and FIG. 4 is an explanatory diagram of the heel oscillation state in the same. 2 Laser beam, 4 Material to be welded, 6 ・Drilling, 10 ・
First reflecting mirror, 1]・Condensing lens, 12 Second reflecting mirror,
13 holder, 14 frame, 15 lever,
16. Push rod, 17. Control disk. (7) Second

Claims (2)

【特許請求の範囲】[Claims] （１）トーチノズルからレーザビームを照射するととも
にその周囲から不活性ガスを噴射して溶接を行うレーザ
ビーム溶接において、レーザビームを溶接線方向にオン
レートさせなから溶接することを特徴とするレーザビー
ム溶接方法。(1) Laser beam welding, in which welding is performed by irradiating a laser beam from a torch nozzle and injecting inert gas from around it, is characterized in that welding is performed without directing the laser beam in the direction of the welding line. Method. （２）トーチノズルからレーザビームを照射スるととも
にその周囲から不活性カスを１１１！１則して溶接を行
うレーザビーム溶接装置において。 トーチノズルから集光レンズを経て照射するレーザビー
ムを受は被溶接側に照射する反射鏡と、同反剤鏡から照
射されるレーザビームの焦点位置を溶接線方向にオンレ
ートさせるように同反射校に振動を賦与する手段とを具
えてなることを特徴とするレーザビーム溶接装置。(2) In a laser beam welding device that performs welding by irradiating a laser beam from a torch nozzle and removing inert debris from the surrounding area. The laser beam irradiated from the torch nozzle via the condensing lens is sent to the reflecting mirror that irradiates the welded side, and to the reflecting mirror so that the focal position of the laser beam irradiated from the repellent mirror is directed in the direction of the welding line. A laser beam welding device characterized by comprising means for imparting vibration.
JP57056461A 1982-04-05 1982-04-05 Method and device for laser welding Granted JPS58173095A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP57056461A JPS58173095A (en) 1982-04-05 1982-04-05 Method and device for laser welding

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP57056461A JPS58173095A (en) 1982-04-05 1982-04-05 Method and device for laser welding

Publications (2)

Publication Number Publication Date
JPS58173095A true JPS58173095A (en) 1983-10-11
JPH027758B2 JPH027758B2 (en) 1990-02-20

Family

ID=13027733

Family Applications (1)

Application Number Title Priority Date Filing Date
JP57056461A Granted JPS58173095A (en) 1982-04-05 1982-04-05 Method and device for laser welding

Country Status (1)

Country Link
JP (1) JPS58173095A (en)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3539933A1 (en) * 1985-11-11 1987-05-14 Nixdorf Computer Ag DEVICE FOR SOLELING ELECTRONIC COMPONENTS ON A CIRCUIT BOARD
WO1996032219A1 (en) * 1995-04-12 1996-10-17 The Twentyfirst Century Corporation Method of butt welding
US6410882B1 (en) * 1999-07-19 2002-06-25 Sumitomo Electric Industries, Ltd. Laser welding method
EP1287936A1 (en) * 2001-08-09 2003-03-05 Kabushiki Kaisha Toshiba Repair method for structure and repair welding apparatus
JP2008500185A (en) * 2004-05-26 2008-01-10 ミバ・ジンテル・オーストリア・ゲゼルシヤフト・ミツト・ベシユレンクテル・ハフツング Method for welding sintered compacts
US7560659B2 (en) * 2004-05-28 2009-07-14 Comau, S.P.A. Robot-aided remote laser welding with simplified control of focusing direction of laser beam
CN105414759A (en) * 2015-12-09 2016-03-23 北京工业大学 Laser welding method with focus capable of rotating and vertically vibrating

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58145389A (en) * 1982-02-22 1983-08-30 Yoshiaki Arata Keyhole seam laser welding

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58145389A (en) * 1982-02-22 1983-08-30 Yoshiaki Arata Keyhole seam laser welding

Cited By (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3539933A1 (en) * 1985-11-11 1987-05-14 Nixdorf Computer Ag DEVICE FOR SOLELING ELECTRONIC COMPONENTS ON A CIRCUIT BOARD
US4792658A (en) * 1985-11-11 1988-12-20 Nixdorf Computer Ag Device for soldering electronic structural elements of a circuit plate bar
WO1996032219A1 (en) * 1995-04-12 1996-10-17 The Twentyfirst Century Corporation Method of butt welding
US5591360A (en) * 1995-04-12 1997-01-07 The Twentyfirst Century Corporation Method of butt welding
EP1075891A3 (en) * 1999-07-19 2004-03-17 Sumitomo Electric Industries, Ltd. Laser welding method
US6410882B1 (en) * 1999-07-19 2002-06-25 Sumitomo Electric Industries, Ltd. Laser welding method
EP1287936A1 (en) * 2001-08-09 2003-03-05 Kabushiki Kaisha Toshiba Repair method for structure and repair welding apparatus
US7022938B2 (en) 2001-08-09 2006-04-04 Kabushiki Kaisha Toshiba Repair method for structure and repair welding apparatus
JP2008500185A (en) * 2004-05-26 2008-01-10 ミバ・ジンテル・オーストリア・ゲゼルシヤフト・ミツト・ベシユレンクテル・ハフツング Method for welding sintered compacts
US7560659B2 (en) * 2004-05-28 2009-07-14 Comau, S.P.A. Robot-aided remote laser welding with simplified control of focusing direction of laser beam
US8148662B2 (en) 2004-05-28 2012-04-03 Comau S.P.A. Method and device for robot-aided remote laser welding with simplified control of focusing direction of laser beam
CN105414759A (en) * 2015-12-09 2016-03-23 北京工业大学 Laser welding method with focus capable of rotating and vertically vibrating
CN105414759B (en) * 2015-12-09 2017-05-03 北京工业大学 Laser welding method with focus capable of rotating and vertically vibrating

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Publication number Publication date
JPH027758B2 (en) 1990-02-20

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