JPH11226765A - Laser welding structure of galvanized steel sheet - Google Patents
Laser welding structure of galvanized steel sheetInfo
- Publication number
- JPH11226765A JPH11226765A JP10037228A JP3722898A JPH11226765A JP H11226765 A JPH11226765 A JP H11226765A JP 10037228 A JP10037228 A JP 10037228A JP 3722898 A JP3722898 A JP 3722898A JP H11226765 A JPH11226765 A JP H11226765A
- Authority
- JP
- Japan
- Prior art keywords
- steel sheet
- laser welding
- galvanized steel
- welding
- plated steel
- 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
Landscapes
- Laser Beam Processing (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、自動車の車体構造
等に使用されるメッキ鋼板のレーザ溶接構造に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a laser welding structure for a plated steel sheet used for a vehicle body structure or the like.
【０００２】[0002]
【従来の技術】鋼板の表面にコート板をメッキ処理した
メッキ鋼板は、自動車の車体構造のパネル部材等に多用
されている。車体を構成するパネル部材は予めプレス加
工された複数のパネル要素を重ね合わせてレーザ溶接機
等により溶接接合されて所定の形状に加工される場合が
多い。２枚のメッキ鋼板を重ね合わせてレーザ溶接加工
を施す際には、鋼板の表面にメッキされたコート材が蒸
発してガスを発生させる。このガスは気泡となって溶接
ビードの内に残留し、溶接強度の低下の原因となる。そ
こで、このレーザ溶接部のガスを排出する手段が必要と
なる。2. Description of the Related Art A plated steel sheet obtained by plating a surface of a steel sheet with a coated plate is widely used as a panel member of an automobile body structure. In many cases, a panel member constituting a vehicle body is formed into a predetermined shape by superposing a plurality of panel elements that have been pressed in advance and welding and joining them by a laser welding machine or the like. When two sheets of plated steel sheet are overlapped and subjected to laser welding, the coating material plated on the surface of the steel sheet evaporates to generate gas. This gas becomes bubbles and remains in the weld bead, causing a decrease in welding strength. Therefore, means for discharging the gas from the laser weld is required.
【０００３】例えば、特開平４−３２７３８５号公報
は、鋼板の溶接に沿って、予めガス抜き用の溝を形成し
ておく技術を開示している。For example, Japanese Patent Application Laid-Open No. 4-327385 discloses a technique in which a gas vent groove is formed in advance along with welding of a steel plate.
【０００４】[0004]
【発明が解決しようとする課題】本発明は、より簡素な
手段によりレーザ溶接部で発生するガスを排出するメッ
キ鋼板のレーザ溶接構造を提供するものである。SUMMARY OF THE INVENTION An object of the present invention is to provide a laser welding structure of a plated steel sheet for discharging gas generated at a laser welding portion by simpler means.
【０００５】[0005]
【課題を解決するための手段】本発明のメッキ鋼板のレ
ーザ溶接構造は、重ね合わされる２枚のメッキ鋼板の溶
接接合面に、レーザ溶接加工前処理としてブラスト加工
処理を施してなるものである。The laser welding structure of a plated steel sheet according to the present invention is obtained by subjecting a welding joint surface of two superposed plated steel sheets to a blasting treatment as a pretreatment for laser welding. .
【０００６】[0006]
【発明の実施の形態】図１は、本発明によるパネル合せ
構造にレーザ溶接加工を実施する説明図である。レーザ
加工ヘッド１は、円筒状のレンズホルダ１０の先端部に
先細りの円錐状のノズル部１２を有する。レンズホルダ
１０の内部には、集光レンズ１４が設けられており、図
示しないレーザビーム発生装置から送られてくる平行光
であるレーザビームＬＢを集光し、溶接加工部Ｗ1に焦
点を合せる。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS FIG. 1 is an explanatory view showing how a laser welding process is performed on a panel matching structure according to the present invention. The laser processing head 1 has a tapered conical nozzle portion 12 at the tip of a cylindrical lens holder 10. Inside of the lens holder 10, condenser lens 14 is provided to focus the laser beam LB is a collimated light transmitted from the laser beam generator (not shown), it focuses on welding portions W 1 .
【０００７】集光レンズ１４のノズル部１２側には、保
護ガラス１６が設けてあって、溶接部Ｗ1で発生するス
パッタ等が集光レンズ１４に付着するのを防止する。ノ
ズル１２内には適宜アシストガスが供給され、溶接加工
を補助するとともに、ノズル１２の冷却等を行なう。溶
接加工部Ｗ1には、２枚のメッキ鋼板２０，３０が重ね
合わされて配置され、溶接線に沿ってビードＢが形成さ
れて２枚のメッキ鋼板２０，３０は溶接される。A protective glass 16 is provided on the nozzle portion 12 side of the condenser lens 14 to prevent spatter and the like generated at the welded portion W 1 from adhering to the condenser lens 14. An assist gas is appropriately supplied into the nozzle 12 to assist the welding process and to cool the nozzle 12. The welding portion W 1, two plated steel 20, 30 are arranged superimposed, two plated steel 20, 30 are formed bead B along the weld line is welded.
【０００８】図２は、本発明の溶接加工前処理が施され
たメッキ鋼板の説明図である。メッキ鋼板３０は、鋼板
の表面に亜鉛等のコート材がメッキされたものであっ
て、その溶接接合面３２に予め、ブラスト加工が施され
るものである。ブラスト加工は、砂やけい石粒などのブ
ラスト材の粒子を高圧水や圧縮空気によってメッキ鋼板
の溶接接合面に吹き付ける加工であって、ブラスト加工
を施された溶接接合面３２の表面には、多数の微少な凹
凸面４０が形成される。FIG. 2 is an explanatory view of a plated steel sheet which has been subjected to welding pretreatment according to the present invention. The plated steel plate 30 is a plate in which a coating material such as zinc is plated on the surface of the steel plate, and the welding joint surface 32 is subjected to blast processing in advance. Blasting is a process in which particles of blasting material such as sand and silica stone are sprayed onto the welded joint surface of the plated steel sheet by high-pressure water or compressed air, and the surface of the blasted welded joint surface 32 is A large number of minute uneven surfaces 40 are formed.
【０００９】この溶接加工前処理を施したメッキ鋼板を
重ね合せてレーザ溶接加工を施すと、接合面で発生する
ガス等は、ブラスト粒子の吹き付けにより形成された凹
凸面４０によって生じる微少間隙から外部へ排出され、
ビード部Ｂ内に気泡として残留することが防止される。
従って、所定の強度を有するビード部Ｂが形成され、溶
接部の強度が確保される。[0009] When laser welding is performed by superimposing the plated steel sheets which have been subjected to the welding pretreatment, gas and the like generated at the joint surface are discharged from the minute gap generated by the uneven surface 40 formed by spraying the blast particles. Discharged to
The bubbles are prevented from remaining in the bead portion B.
Therefore, a bead portion B having a predetermined strength is formed, and the strength of the welded portion is ensured.
【００１０】図３は、本発明の他の実施の形態を示す説
明図である。メッキ鋼板３０の溶接接合面３２に対し
て、溶接加工前処理として、シザース加工が施される。
シザース加工によって、溶接接合面３２上には、多数の
微細な溝５０が形成される。溶接加工の際には、この溝
から蒸発ガスが排出され、ビード部Ｂ内への気泡の残留
を防止することができる。したがって、溶接部の強度が
確保される。FIG. 3 is an explanatory view showing another embodiment of the present invention. A scissoring process is performed on the welding joint surface 32 of the plated steel plate 30 as a pre-welding process.
Many fine grooves 50 are formed on the welded joint surface 32 by the scissors processing. At the time of the welding process, the evaporated gas is discharged from the groove, so that it is possible to prevent bubbles from remaining in the bead portion B. Therefore, the strength of the weld is ensured.
【００１１】[0011]
【発明の効果】本発明は以上のように、メッキ鋼板を重
ね合わせてレーザ溶接加工を施す際に、溶接時に発生す
るメッキコート材等の蒸発ガスを逃がす処理を溶接接合
面に施してあるので、溶接部のビード内に有害なガス気
泡等が残留せず、溶接強度を確保することができる。As described above, according to the present invention, when the plated steel sheets are overlapped with each other and subjected to laser welding, the treatment for releasing the vaporized gas such as a plating coat material generated at the time of welding is performed on the welded joint surface. In addition, harmful gas bubbles and the like do not remain in the bead of the welded portion, and the welding strength can be secured.
【図１】本発明によるレーザ溶接加工を示す説明図。FIG. 1 is an explanatory view showing a laser welding process according to the present invention.
【図２】本発明によるメッキ鋼板のレーザ溶接加工前処
理の説明図。FIG. 2 is an explanatory diagram of a pretreatment for laser welding of a plated steel sheet according to the present invention.
【図３】本発明によるメッキ鋼板のレーザ溶接加工前処
理の他の説明図。FIG. 3 is another explanatory view of a pretreatment for laser welding of a plated steel sheet according to the present invention.
１ レーザ加工ヘッド １０ レンズホルダ １２ ノズル １４ 集光レンズ １６ 保護ガラス ２０，３０ メッキ鋼板 ４０ 凹凸面 ５０ シザース加工溝 DESCRIPTION OF SYMBOLS 1 Laser processing head 10 Lens holder 12 Nozzle 14 Condensing lens 16 Protective glass 20, 30 Plated steel plate 40 Uneven surface 50 Scissors processing groove
─────────────────────────────────────────────────────
────────────────────────────────────────────────── ───
【手続補正書】[Procedure amendment]
【提出日】平成１０年２月２５日[Submission date] February 25, 1998
【手続補正１】[Procedure amendment 1]
【補正対象書類名】図面[Document name to be amended] Drawing
【補正対象項目名】図２[Correction target item name] Figure 2
【補正方法】変更[Correction method] Change
【補正内容】[Correction contents]
【図２】 FIG. 2
Claims (1)
接合面に、レーザ溶接加工前処理としてブラスト加工処
理を施してなるメッキ鋼板のレーザ溶接構造。1. A laser welded structure of a plated steel sheet obtained by subjecting a welded joint surface of two superposed plated steel sheets to blast processing as pretreatment for laser welding.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10037228A JPH11226765A (en) | 1998-02-19 | 1998-02-19 | Laser welding structure of galvanized steel sheet |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10037228A JPH11226765A (en) | 1998-02-19 | 1998-02-19 | Laser welding structure of galvanized steel sheet |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH11226765A true JPH11226765A (en) | 1999-08-24 |
Family
ID=12491754
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP10037228A Pending JPH11226765A (en) | 1998-02-19 | 1998-02-19 | Laser welding structure of galvanized steel sheet |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH11226765A (en) |
Cited By (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1184126A3 (en) * | 2000-03-30 | 2003-08-06 | Fuji Jukogyo Kabushiki Kaisha | Laser lamp welding process of welding together overlapped plated steel sheets |
| 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 |
| WO2005014215A2 (en) | 2003-08-12 | 2005-02-17 | Magna International Inc. | Method of laser welding coated members |
| EP1422016A3 (en) * | 2002-11-21 | 2005-07-06 | COMAU S.p.A. | A method for preparing zinc-coated metal sheets to be joined by laser welding |
| JP2006240320A (en) * | 2005-02-28 | 2006-09-14 | Central Res Inst Of Electric Power Ind | Flight unit |
| WO2010041461A1 (en) * | 2008-10-10 | 2010-04-15 | パナソニック株式会社 | Electric condenser, unit equipped with electric condenser, and method of manufacturing electric condenser |
| JP2010240659A (en) * | 2009-04-01 | 2010-10-28 | Ihi Corp | WELDING METHOD FOR Zn-CONTAINING SUBSTANCE-COATED MATERIAL AND LASER ARC HYBRID WELDING APPARATUS |
| EP2316607A1 (en) * | 2009-10-27 | 2011-05-04 | General Electric Company | Workpiece with channel and process of welding for preventing porosity in a formed weld |
| US20120097650A1 (en) * | 2010-10-25 | 2012-04-26 | Suzuki Motor Corporation | Laser lap welding method for parts made of galvanized steel sheet |
| US9012804B2 (en) | 2010-10-25 | 2015-04-21 | Suzuki Motor Corporation | Laser lap welding method for parts made of galvanized steel sheet |
| JP2016032421A (en) * | 2014-07-30 | 2016-03-07 | 株式会社デンソー | Rotor of dynamo-electric machine and dynamo-electric machine |
| CN110480166A (en) * | 2019-07-17 | 2019-11-22 | 广东工业大学 | A kind of new process of body of a motor car galvanized sheet laser stitch welding |
| CN113001414A (en) * | 2021-03-11 | 2021-06-22 | 泰极微技术(苏州)有限公司 | Processing method of glass surface microstructure |
-
1998
- 1998-02-19 JP JP10037228A patent/JPH11226765A/en active Pending
Cited By (19)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1184126A3 (en) * | 2000-03-30 | 2003-08-06 | Fuji Jukogyo Kabushiki Kaisha | Laser lamp welding process of welding together overlapped plated steel sheets |
| EP1985402A2 (en) | 2000-03-30 | 2008-10-29 | Fuji Jukogyo Kabushiki Kaisha | Laser welding process of welding together overlapped plated steel sheets |
| EP1982789A2 (en) | 2000-03-30 | 2008-10-22 | Fuji Jukogyo Kabushiki Kaisha | Laser welding process of welding together overlapped plated steel sheets |
| JP2003290955A (en) * | 2002-04-03 | 2003-10-14 | Toyota Motor Corp | Laser welding method for surface treated steel sheet |
| EP1422016A3 (en) * | 2002-11-21 | 2005-07-06 | COMAU S.p.A. | A method for preparing zinc-coated metal sheets to be joined by laser welding |
| JP2004344919A (en) * | 2003-05-21 | 2004-12-09 | Yaskawa Electric Corp | Laser beam welding device |
| EP1654087A2 (en) * | 2003-08-12 | 2006-05-10 | Magna International Inc | Method of laser welding coated members |
| WO2005014215A2 (en) | 2003-08-12 | 2005-02-17 | Magna International Inc. | Method of laser welding coated members |
| EP1654087A4 (en) * | 2003-08-12 | 2008-10-29 | Magna Int Inc | Method of laser welding coated members |
| JP2006240320A (en) * | 2005-02-28 | 2006-09-14 | Central Res Inst Of Electric Power Ind | Flight unit |
| WO2010041461A1 (en) * | 2008-10-10 | 2010-04-15 | パナソニック株式会社 | Electric condenser, unit equipped with electric condenser, and method of manufacturing electric condenser |
| JP2010240659A (en) * | 2009-04-01 | 2010-10-28 | Ihi Corp | WELDING METHOD FOR Zn-CONTAINING SUBSTANCE-COATED MATERIAL AND LASER ARC HYBRID WELDING APPARATUS |
| EP2316607A1 (en) * | 2009-10-27 | 2011-05-04 | General Electric Company | Workpiece with channel and process of welding for preventing porosity in a formed weld |
| US20120097650A1 (en) * | 2010-10-25 | 2012-04-26 | Suzuki Motor Corporation | Laser lap welding method for parts made of galvanized steel sheet |
| US8841577B2 (en) * | 2010-10-25 | 2014-09-23 | Suzuki Motor Corporation | Laser lap welding method for parts made of galvanized steel sheet |
| US9012804B2 (en) | 2010-10-25 | 2015-04-21 | Suzuki Motor Corporation | Laser lap welding method for parts made of galvanized steel sheet |
| JP2016032421A (en) * | 2014-07-30 | 2016-03-07 | 株式会社デンソー | Rotor of dynamo-electric machine and dynamo-electric machine |
| CN110480166A (en) * | 2019-07-17 | 2019-11-22 | 广东工业大学 | A kind of new process of body of a motor car galvanized sheet laser stitch welding |
| CN113001414A (en) * | 2021-03-11 | 2021-06-22 | 泰极微技术(苏州)有限公司 | Processing method of glass surface microstructure |
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