JPH09103884A - Arc welding method and welded product of aluminum member - Google Patents
Arc welding method and welded product of aluminum memberInfo
- Publication number
- JPH09103884A JPH09103884A JP28806795A JP28806795A JPH09103884A JP H09103884 A JPH09103884 A JP H09103884A JP 28806795 A JP28806795 A JP 28806795A JP 28806795 A JP28806795 A JP 28806795A JP H09103884 A JPH09103884 A JP H09103884A
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- Japan
- Prior art keywords
- jig
- aluminum
- welded
- casing
- arc
- 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.)
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- Arc Welding In General (AREA)
- Butt Welding And Welding Of Specific Article (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明は、溶接後の形状精度を向
上させたアルミ部材の溶接方法及びビスカスダンパ等の
溶接製品に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for welding an aluminum member having improved shape accuracy after welding, and a welded product such as a viscous damper.
【０００２】[0002]
【従来の技術】アルミ製容器本体に蓋体を溶接封止する
方法として、電子溶接ビーム等の高エネルギー密度ビー
ムで溶接することが特開平６３−２６４２８２号公報に
紹介されている。これを利用して、車両の振動防止用部
材として使用されるビスカスダンパを製造すると、ケー
シングに鉄製リングを収容した後、最終溶接工程で高エ
ネルギービーム溶接によって蓋体を溶接封止することに
なる。ビスカスダンパは、図１に示すように、円形平板
部１の周縁に矩形断面をもつ環状容器部２を設けてい
る。円形平板部１及び環状容器部２には、アルミ材で一
体的に成形したものが使用されている。鉄製に代えてア
ルミ製ビスカスダンパを使用すると、オーバラン領域の
３次の共振が大幅に低減し、常用回転内のねじり共振に
よる振動が低減し、シリコーンオイル等の昇温が抑制さ
れオイル劣化が防止できる（社団法人自動車技術会 学
術講演会前刷集９４３号第４５〜４８頁参照）。2. Description of the Related Art As a method of welding and sealing a lid on an aluminum container body, welding with a high energy density beam such as an electron welding beam is introduced in Japanese Patent Laid-Open No. 63-264282. When this is used to manufacture a viscous damper used as a vibration prevention member for a vehicle, after the iron ring is housed in the casing, the lid is welded and sealed by high energy beam welding in the final welding process. . As shown in FIG. 1, the viscous damper is provided with an annular container portion 2 having a rectangular cross section on the periphery of a circular flat plate portion 1. The circular flat plate portion 1 and the annular container portion 2 are integrally formed of an aluminum material. If an aluminum viscous damper is used instead of iron, the third-order resonance in the overrun area is greatly reduced, vibration due to torsional resonance in normal rotation is reduced, and the temperature rise of silicone oil is suppressed and oil deterioration is prevented. Yes (see Preprints 943, pages 45-48, Academic Society of Japan Society of Automotive Engineers, Japan).
【０００３】円形平板部１は、クランクシャフトの軸部
が挿通される開口部３が中央に形成されている。環状容
器部２は、内部の空洞に鉄製リング４を収容し、鉄製リ
ング４と環状容器部２との間の隙間にシリコーンオイル
等が充填されている。また、鉄製リング４が環状容器部
２の内壁に直接衝突しないように、フッ素樹脂等の緩衝
材５を介在させている。従来より通常考えられているア
ルミ製ビスカスダンパの製造法によれば、シリコーンオ
イル等の充填に先立って、鉄製リング４を収容した状態
で環状容器部２が封止される。すなわち、図２（ａ）に
示すように、容器本体６に鉄製リング４を入れた後、蓋
７を装着する。蓋７は、容器本体６の上部壁８を蓋７側
に折り曲げるカシメ作業によって容器本体６に取り付け
られる。このとき、封止部におけるシリコーンオイル等
の密封性を確保するため、図２（ｂ）に示すように蓋７
の周縁下部から突出しているツバ部９と上部壁８との間
にシール剤１０を挟み込んでいる。The circular flat plate portion 1 has an opening 3 formed at the center through which the shaft portion of the crankshaft is inserted. The ring-shaped container part 2 accommodates an iron ring 4 in its inner cavity, and silicone oil or the like is filled in the gap between the iron ring 4 and the ring-shaped container part 2. Further, a buffer material 5 such as a fluororesin is interposed so that the iron ring 4 does not directly collide with the inner wall of the annular container portion 2. According to the conventional method of manufacturing an aluminum viscous damper, the annular container 2 is sealed with the iron ring 4 housed therein prior to filling with silicone oil or the like. That is, as shown in FIG. 2A, after the iron ring 4 is put in the container body 6, the lid 7 is attached. The lid 7 is attached to the container body 6 by a caulking operation of bending the upper wall 8 of the container body 6 toward the lid 7. At this time, in order to ensure the sealing property of silicone oil or the like in the sealing portion, as shown in FIG.
The sealant 10 is sandwiched between the flange 9 and the upper wall 8 protruding from the lower part of the peripheral edge of the.
【０００４】[0004]
【発明が解決しようとする課題】カシメによる接合で
は、容器本体６と蓋７との接合強度が弱く、高速回転に
よる遠心力や振動や衝撃が繰返し加えられるクランクシ
ャフトに装着された状態では、容器本体６と蓋７との接
合部にオイル漏れの原因となる隙間が生じ易い。しか
も、カシメ作業を容易にするため、図２（ｂ）に示すよ
うに薄肉化した上部壁８やツバ部９を成形することが必
要で、作業工数や作業時間の増加を招く。そこで、最近
では、カシメに代わる方法として溶接等が検討されてい
る。たとえば、前掲した特開昭６３−２６４８２号公報
では、電子ビーム，レーザビーム等の高エネルギービー
ム溶接で容器を封止する方法を紹介している。しかし、
これらの溶接法は、特殊な設備を必要とするため、イニ
シャルコストやランニングコスト等が高くなる。In the case of joining by caulking, the joining strength between the container body 6 and the lid 7 is weak, and when the container is mounted on the crankshaft where centrifugal force, vibration and impact due to high speed rotation are repeatedly applied, the container is not attached. A gap that causes oil leakage is likely to occur at the joint between the main body 6 and the lid 7. Moreover, in order to facilitate the crimping work, it is necessary to mold the thinned upper wall 8 and the brim portion 9 as shown in FIG. 2B, which causes an increase in the number of working steps and working time. Therefore, recently, welding or the like has been studied as an alternative method to caulking. For example, the above-mentioned Japanese Patent Laid-Open No. 63-26482 introduces a method of sealing a container by welding with a high energy beam such as an electron beam or a laser beam. But,
Since these welding methods require special equipment, the initial cost and running cost are high.
【０００５】代表的な溶接法である通常のＭＩＧ溶接法
で容器を封止しようとすると、単位長さ当りの入熱量が
多いことから容器母材の熱変形が大きい。また、高温に
なるため、内部にフッ素樹脂，ゴム等の部品を装入でき
ない。大きな熱変形は、クランクシャフトに装着した場
合に所期の振動吸収特性を損なう原因ともなる。更に、
ビード幅や余盛りが大きくエッジ部のダレが大きくなり
易いことから、製品の外観が悪化する。このような問題
は、図１及び図２で示したアルミ製ビスカスダンパだけ
ではなく、アルミ製外側材にアルミ製内側材を溶接して
容器を作るものである限り、アキュームレータ，ウォー
タポンプ，トルクコンバータケース，ハーメチック端
子，液体及び気体のタンク類等においても同様に生じ
る。When an ordinary MIG welding method, which is a typical welding method, is used to seal a container, the amount of heat input per unit length is large, so that the base material of the container is greatly deformed by heat. Also, since the temperature becomes high, parts such as fluororesin and rubber cannot be loaded inside. Large thermal deformation also causes deterioration of the desired vibration absorption characteristics when mounted on the crankshaft. Furthermore,
Since the bead width and excess are large and the sagging of the edge portion is likely to be large, the appearance of the product is deteriorated. Such a problem is not limited to the aluminum viscous damper shown in FIGS. 1 and 2, but as long as an aluminum outer material is welded to an aluminum inner material to form a container, an accumulator, a water pump, a torque converter. The same applies to cases, hermetic terminals, liquid and gas tanks, etc.
【０００６】熱伝導性の良好なアルミ部材では、熱容量
が大きく異なっている部材を溶接する場合にも溶接が困
難となる。すなわち、熱容量の大きな部材では、入力さ
れた熱量が伝熱によって部材内部に拡散し、溶接個所が
必要な溶接温度に昇温し難い。他方、熱容量の小さな部
材では、溶接時の入熱によって急激に昇温し、局部的な
変形を起こすまで昇温し易い。そのため、溶け落ち，溶
接ビードの形状不良等の溶接欠陥が発生し易く、溶接条
件を高精度に管理する必要が生じる。また、図２に示す
ような継手部分を溶接により接合しようとする場合、溶
接時にアークが上部壁８の外側面に回り込み、エッジに
ダレを発生させたり、表面に種々の欠陥を発生させる虞
れがある。本発明は、このような問題を解消すべく案出
されたものであり、溶接部近傍の被溶接材料を覆い且つ
熱容量を調整する機能をもつ治具を配置することによ
り、ダレや溶け落ちを防止し、過剰な入熱により材質に
劣化をきたすことなく、熱容量が大きく異なるアルミ部
材を溶接することを目的とする。また、アークの広がり
に対して被溶接材の溶接面の幅が小さく、アークにより
溶融しては不都合な部分まで溶融するような場合におい
ても、溶接を良好に行うことをも目的にする。With an aluminum member having good thermal conductivity, welding becomes difficult even when welding members having greatly different heat capacities. That is, in a member having a large heat capacity, the amount of input heat diffuses into the member due to heat transfer, and it is difficult to raise the temperature of the welding point to the required welding temperature. On the other hand, in a member having a small heat capacity, the temperature rises rapidly due to heat input during welding, and the temperature rises easily until local deformation occurs. Therefore, welding defects such as burn-through and defective shape of the weld bead are likely to occur, and it becomes necessary to manage the welding conditions with high accuracy. Further, when joining the joint portion as shown in FIG. 2 by welding, the arc may wrap around the outer surface of the upper wall 8 at the time of welding to cause sagging at the edge or various defects on the surface. There is. The present invention has been devised to solve such a problem, and by arranging a jig having a function of covering the material to be welded in the vicinity of the welded portion and adjusting the heat capacity, sagging or burn-through can be prevented. It is an object of the present invention to prevent the deterioration of the material due to excessive heat input and to weld aluminum members having greatly different heat capacities. Another object is to perform good welding even in the case where the width of the welding surface of the material to be welded is small relative to the spread of the arc and the arc causes melting to an inconvenient portion.
【０００７】[0007]
【課題を解決するための手段】本発明のアーク溶接方法
は、その目的を達成するため、熱容量の大きいアルミ部
材に熱容量の小さいアルミ部材を溶接するとき、熱容量
の大きい治具を前記熱容量の小さいアルミ部材に接触さ
せ、前記熱容量の大きいアルミ部材と前記熱容量の小さ
いアルミ部材との間をアーク溶接することを特徴とす
る。また、被溶接材の表面に対するアークの広がり幅Ｗ
a より被溶接材の幅Ｗb が小さい場合に、熱容量の大き
い治具を被溶接材の溶接させたくない面に接触させて、
アーク溶接することを特徴とする。治具の幅をＷj ，被
溶接材の幅をＷb ，被溶接材表面におけるアークの広が
り幅をＷa とするとき、アークの回り込みを防止する上
で、Ｗj ＞Ｗa −Ｗb の幅をもつ治具を使用することが
好ましい。治具としては、水冷又は空冷機構を内蔵した
ものを使用することができる。本発明に従って、円筒形
状のアルミ製ケーシングにカバーを溶接することができ
る。この場合には、ケーシング本体及びカバーと同じ高
さに上端面がある治具、或いはケーシングの上端面一部
を覆う治具等が使用される。In order to achieve the object, the arc welding method according to the present invention, when welding an aluminum member having a small heat capacity to an aluminum member having a large heat capacity, a jig having a large heat capacity is used for the welding. The aluminum member is brought into contact with the aluminum member, and the aluminum member having the large heat capacity and the aluminum member having the small heat capacity are arc-welded. Also, the width W of the arc spread over the surface of the material to be welded
When the width W b of the material to be welded is smaller than a, a jig having a large heat capacity is brought into contact with the surface of the material to be welded which is not desired to be welded,
Characterized by arc welding. When the width of the jig is W j , the width of the material to be welded is W b , and the spread width of the arc on the surface of the material to be welded is W a , in order to prevent the arc from wrapping around, W j > W a −W b It is preferable to use a jig having a width of. As the jig, one having a built-in water cooling or air cooling mechanism can be used. According to the invention, the cover can be welded to a cylindrical aluminum casing. In this case, a jig having an upper end surface at the same height as the casing main body and the cover, or a jig covering a part of the upper end surface of the casing is used.
【０００８】ケーシングの上端面一部を覆う治具では、
ケーシングの溶接個所の板厚をｔ，ケーシング上端面か
らの治具高さをｔ1 とするとき、ｔ1 ≦１００／ｔの治
具高さをｔ1 をもつ治具が使用される。また、ケーシン
グ表面に被さる突出部の治具幅をｔ2 とするとき、ｔ2
＜ｔの治具幅ｔ2 をもつ治具を使用する。更に、ケーシ
ングの表面からケーシング表面に被さる治具面までの距
離をｔ3 とするとき、ｔ3 ≦ｔ1 の距離ｔ3 をもつ治具
が使用される。角部にコーナーアールＲをつけたい場
合、ケーシング本体にカバーを溶接する際、ケーシング
のコーナーアールＲに必要とされる高低差ｔ4 だけ低い
治具高さをもつ治具を使用する。また、円筒形のアルミ
製ケーシングに円板状のカバーを溶接する際、ケーシン
グの外周面に沿って移動する治具を使用することもでき
る。被溶接材に過剰な熱量を与えないように、１〜７ｍ
／分，好ましくは２〜５ｍ／分の範囲に溶接速度が設定
される。With a jig that covers a part of the upper end surface of the casing,
The thickness of the welds of the casing t, when the jig height from the casing upper surface and t 1, the jig is used with t 1 the jig height t 1 ≦ 100 / t. Further, when the jig width of the protruding portion covering the casing surface is t 2 , t 2
A jig having a jig width t 2 of <t is used. Further, when the distance from the surface of the casing to the jig surface covering the casing surface is t 3 , a jig having a distance t 3 of t 3 ≦ t 1 is used. When it is desired to add a corner radius R to a corner portion, when a cover is welded to a casing body, a jig having a jig height lower than the height difference t 4 required for the corner radius R of the casing is used. Further, when welding the disc-shaped cover to the cylindrical aluminum casing, it is possible to use a jig that moves along the outer peripheral surface of the casing. 1 to 7m so as not to give an excessive amount of heat to the material to be welded
/ Min, preferably the welding speed is set in the range of 2 to 5 m / min.
【０００９】[0009]
【作用】熱容量が大きく異なるアルミ部材を溶接すると
き、アルミ部材の熱伝導量が大きく、しかも比較的融点
が低いことから、溶接時の入熱による損傷は鉄系部材の
溶接に比較して大きくなる。たとえば、図３に示すよう
にパネル１１に縦骨材１２をアーク溶接するとき、アー
クの広がり幅に較べて縦骨材１２の高さが低いＴ型継手
ではアーク１３の回り込みによってダレが生じ易く、健
全なリブ形状を維持することができない。また、縦骨材
１２の高さが低いＴ型継手では、パネル１１と縦骨材１
２とのヒートバランスが悪く、パネル１１に比較して縦
骨材１２が過度に昇温しする結果、縦骨材１２の材質が
軟化し、材料強度が低下する。本発明は、このようなア
ークの回り込みや過度の昇温を防止するため、図４に示
すような治具１４を使用する。治具１４としては、熱伝
導率が高くアルミ製被溶接材との熱伝達がし易い材料で
熱容量の大きなものが好ましい。たとえば、被溶接材よ
り断面積が大きく、密着する形状に作製されたアルミ
材，銅材等の材質でできたものが使用される。[Operation] When welding aluminum members with greatly different heat capacities, the amount of heat conduction of the aluminum members is large and the melting point is relatively low, so the damage due to heat input during welding is greater than that of welding of iron-based members. Become. For example, as shown in FIG. 3, when the vertical aggregate 12 is arc-welded to the panel 11, in a T-shaped joint in which the height of the vertical aggregate 12 is lower than the spread width of the arc, sagging easily occurs due to the wraparound of the arc 13. , Can not maintain a sound rib shape. In addition, in the T-shaped joint in which the height of the vertical aggregate 12 is low, the panel 11 and the vertical aggregate 1 are
The heat balance with No. 2 is poor and the temperature of the vertical aggregate 12 is excessively increased as compared with that of the panel 11. As a result, the material of the vertical aggregate 12 is softened and the material strength is reduced. The present invention uses a jig 14 as shown in FIG. 4 in order to prevent such arc wraparound and excessive temperature rise. As the jig 14, it is preferable to use a material having a high heat conductivity and easy heat transfer to the material to be welded made of aluminum and having a large heat capacity. For example, a material having a larger cross-sectional area than the material to be welded and made of an aluminum material, a copper material, or the like, which is manufactured to have a close contact shape, is used.
【００１０】図４（ａ）の治具１４は、縦骨材１２の上
端面に当接する押え部１５を備え、押え部１５から下面
までが溶接ビード１６に沿って傾斜した傾斜面１７にな
っている。押え部１５は、アーク１３の広がり幅をＷ
a ，縦骨材１２の幅をＷb とするとき、Ｗj ＞Ｗa −Ｗ
b を満足する治具幅Ｗj に設定されている。これによ
り、アーク１３が縦骨材１２の被溶接部以外の面に回り
込むことが防止され、溶接後の表面が溶接痕等のない健
全な状態に維持される。また、図４（ｂ）に示すように
被溶接材１８に対してアーク１３を直角に当てる場合
も、Ｗj ＞Ｗa −Ｗbを満足する治具幅Ｗj をもつ治具
１４が使用される。なお、本明細書では、アークの広が
り幅Ｗa は、図４に示した通り被溶接材の表面での広が
り幅を示す。これら各寸法は、図４（ｃ）に示すごとく
トーチの軸線が溶接中心よりずれている場合、及びトー
チの軸線を傾けて溶接する場合にあっても同様である。
更に、図４（ｄ）の如く、３つの材料を同時に重ね溶接
する場合も同様である。以上の通り、アークの外縁が被
溶接材の溶融させたくない部分を熱容量の大きな治具で
覆うものである。以上の通り、このような治具幅Ｗj を
もつ治具１４を縦骨材１２に当ててアーク溶接すると
き、熱容量の小さな縦骨材１２に加えられた熱量は治具
１４に伝えられるので、縦骨材１２が過度に昇温するこ
とが防止される。その結果、特に縦骨材１２の角部に生
じがちなダレがなくなる。また、過度な昇温が抑制され
ることから歪みや変形が抑えられ、溶接製品の形状精度
が向上する。The jig 14 shown in FIG. 4 (a) is provided with a holding portion 15 which comes into contact with the upper end surface of the vertical aggregate 12, and an inclined surface 17 which is inclined along the welding bead 16 from the holding portion 15 to the lower surface. ing. The pressing portion 15 has a width of the arc 13 that is W
a , where W b is the width of the vertical aggregate 12, W j > W a −W
The jig width W j that satisfies b is set. As a result, the arc 13 is prevented from wrapping around the surface of the vertical aggregate 12 other than the welded portion, and the surface after welding is maintained in a healthy state without welding marks and the like. Also, as shown in FIG. 4B, when the arc 13 is applied to the material to be welded 18 at a right angle, a jig 14 having a jig width W j satisfying W j > W a −W b is used. To be done. In this specification, the spread width W a of the arc indicates the spread width on the surface of the material to be welded as shown in FIG. 4. These dimensions are the same when the torch axis is displaced from the welding center as shown in FIG. 4C and when the torch axis is inclined and welding is performed.
Further, as shown in FIG. 4 (d), the same is true when three materials are simultaneously lap-welded. As described above, the outer edge of the arc covers the portion of the material to be welded which is not desired to be melted, with the jig having a large heat capacity. As described above, when the jig 14 having such a jig width W j is applied to the vertical aggregate 12 for arc welding, the amount of heat applied to the vertical aggregate 12 having a small heat capacity is transmitted to the jig 14. The excessive temperature rise of the vertical aggregate 12 is prevented. As a result, the sagging that tends to occur particularly at the corners of the vertical aggregate 12 is eliminated. Further, since excessive temperature rise is suppressed, distortion and deformation are suppressed, and the shape accuracy of the welded product is improved.
【００１１】円筒形のケーシングに円板状の蓋を溶接封
止したビスカスダンパ等では、図５（ａ）に示すよう
に、ケーシング１９の外側に治具１４を当てる。そし
て、ケーシング１９の上端縁に形成された段部２０にカ
バー２１を嵌め合わせ、ケーシング１９にカバー２１を
アーク溶接する。治具１４を当てることにより、ケーシ
ング１９の外周面にアーク１３が回り込むことなく、健
全な表面状態が維持される。また、形成された溶接ビー
ド２２も形状が安定化する。これに対し、治具１４を使
用することなくカバー２１を溶接封止すると、図５
（ｂ）に示すようなアーク１３の回り込みによって、溶
接ビード２２にダレが生じる。また、ケーシング１９の
角部が溶け落ちが生じ、溶接後の形状が劣化する。ケー
シング１９にカバー２１を溶接封止する設計では、通
常、ケーシング１９の上端縁に段部２０を形成し、図６
（ａ）に示すように板厚をｔまで薄肉化した継手部２３
にカバー２１の端縁を嵌め合わせ、必要に応じて開先２
４を形成した後、カバー２１をケーシング１９に溶接す
る。この場合、図６（ｂ）に示すように、ケーシング１
９の上端面から突出する高さをもつ治具１４の使用によ
ってアークの回り込みが確実に防止される。In a viscous damper or the like in which a disk-shaped lid is welded and sealed to a cylindrical casing, a jig 14 is applied to the outside of the casing 19 as shown in FIG. 5 (a). Then, the cover 21 is fitted to the step portion 20 formed on the upper edge of the casing 19, and the cover 21 is arc-welded to the casing 19. By applying the jig 14, the arc 13 does not go around the outer peripheral surface of the casing 19 and a healthy surface state is maintained. Further, the shape of the formed weld bead 22 is also stabilized. On the other hand, if the cover 21 is welded and sealed without using the jig 14, as shown in FIG.
The welding bead 22 is sagged due to the wraparound of the arc 13 as shown in (b). Further, the corner portion of the casing 19 is melted down, and the shape after welding is deteriorated. In the design in which the cover 21 is welded and sealed to the casing 19, usually, the step portion 20 is formed on the upper edge of the casing 19, and
As shown in (a), the joint portion 23 whose plate thickness is reduced to t
Fit the edge of the cover 21 to the groove 2 if necessary.
After forming 4, the cover 21 is welded to the casing 19. In this case, as shown in FIG. 6B, the casing 1
The use of a jig 14 having a height protruding from the upper end surface of 9 reliably prevents the arc from wrapping around.
【００１２】治具１４がケーシング１９の上端面から突
出する高さｔ1 は、継手部２３の板厚ｔを基準にしてｔ
1 ≦１００／ｔの関係を満足させることが好ましい。高
さｔ1 が１００／ｔを超えてもアークの回り込みを防止
できるが、たとえばｔ＝５ｍｍのときｔ1 ＞２０ｍｍと
なり、溶接トーチが高くなることによるシールド不足に
起因した欠陥が発生し易くなる。治具１４としては、図
６（ｃ）に示すように冷却水を循環させる水冷機構又は
空冷機構を内蔵した治具を使用することも可能である。
冷却機構を内蔵した治具１４は、薄肉化された継手部２
３からの熱放散を促進させ、継手部２３が過度に昇温す
ることを防止する。The height t 1 at which the jig 14 projects from the upper end surface of the casing 19 is t based on the plate thickness t of the joint portion 23.
It is preferable to satisfy the relationship of 1 ≦ 100 / t. Even if the height t 1 exceeds 100 / t, arc wraparound can be prevented, but when t = 5 mm, for example, t 1 > 20 mm, and defects due to insufficient shield due to higher welding torch are likely to occur. . As the jig 14, it is also possible to use a jig having a water cooling mechanism or an air cooling mechanism for circulating cooling water as shown in FIG. 6C.
The jig 14 having a built-in cooling mechanism is the thinned joint portion 2
3 promotes heat dissipation and prevents the joint portion 23 from excessively rising in temperature.
【００１３】治具１４には、継手部上面の溶融幅を小さ
くするため、図６（ｄ）に示すように、ケーシング１９
の上端面一部を押さえる突出部２５を形成してもよい。
突出部２５がケーシング１９の上端面に被さる長さｔ2
は、溶接個所を確保するため継手部２３の板厚ｔよりも
小さくすることが必要である。また、この場合、図６
（ｅ）に示すように、ケーシング１９の上端面と突出部
２５との間に間隙２６を持たせることも可能である。こ
の場合、間隙２６の距離ｔ3 は、突出部２５がケーシン
グ１９の上端面に被さる長さｔ2 以下にすることが有効
である。距離ｔ3が長さｔ2 より大きくなると、溶接ア
ークによるケーシング１９の上端面の溶融幅を小さくす
る効果が小さくなると共に、突出部２５が溶融する虞れ
が生じる。角部にコーナーアールＲをつけたい場合に
は、図６（ｆ）に示すように、ケーシング１９の上端面
に比較して高低差ｔ4 だけ低くなった治具１４を使用す
ることが好ましい。これは、アークの回り込みを意図的
に利用し、コーナーアールＲを形成しようとするもので
ある。たとえば、高低差ｔ4 を２ｍｍとした場合、アー
クの回り込みによりケーシング１９の上端外周部の溶融
メタルの表面張力及び界面張力により、おおむね２ｍｍ
のコーナーアールＲを形成できる。The jig 14 has a casing 19 as shown in FIG. 6D in order to reduce the melting width of the upper surface of the joint.
You may form the protrusion part 25 which presses down a part of upper end surface.
A length t 2 that the protrusion 25 covers the upper end surface of the casing 19.
Is required to be smaller than the plate thickness t of the joint portion 23 in order to secure the welding point. Further, in this case, FIG.
As shown in (e), it is possible to provide a gap 26 between the upper end surface of the casing 19 and the protruding portion 25. In this case, it is effective to set the distance t 3 of the gap 26 to be equal to or less than the length t 2 that the protrusion 25 covers the upper end surface of the casing 19. If the distance t 3 is longer than the length t 2, the effect of reducing the melting width of the upper end surface of the casing 19 by the welding arc is reduced and the projection 25 may be melted. When it is desired to provide a corner radius R at a corner, it is preferable to use a jig 14 which is lower than the upper end surface of the casing 19 by a height difference t 4 as shown in FIG. 6 (f). This intends to form the corner radius R by intentionally utilizing the wraparound of the arc. For example, when the height difference t 4 is set to 2 mm, it is approximately 2 mm due to the surface tension and the interfacial tension of the molten metal on the outer periphery of the upper end of the casing 19 due to the arc wrapping around.
Corner radius R can be formed.
【００１４】本発明は、図７（ａ）に示すように、円筒
状の管材２７にフランジ２８を溶接する場合にも適用で
きる。フランジ２８は、管材２７と比較して小さい。そ
のため、通常の溶接法で溶接すると、熱容量の小さなフ
ランジ２８が過度に昇温し、図７（ｂ）に示すようにフ
ランジ２８にダレ２９が生じ易い。また、極端な場合に
は、フランジ２８の側面まで溶接ビード２２が盛り上が
り、必要とする形状精度が確保できない。そこで、図７
（ｃ）に示すように、管材２７を収容し、フランジ２８
の側面に接触する内周面をもつ治具１４を使用する。治
具１４によってフランジ２８の側面を覆った状態で溶接
するとき、溶接時にフランジ２８に集中した熱が治具１
４に放散され、フランジ２８が過度に昇温することがな
くなり、溶接入熱による歪みや変形が防止される。ま
た、フランジ２８の側面が治具１４で覆われているの
で、アークの回り込みが防止され、溶接後もフランジ２
８が健全な表面状態に維持される。The present invention can also be applied to the case where a flange 28 is welded to a cylindrical pipe material 27 as shown in FIG. 7 (a). The flange 28 is smaller than the pipe material 27. Therefore, when welding is performed by a normal welding method, the flange 28 having a small heat capacity is excessively heated, and the flange 28 is likely to have a sag 29 as shown in FIG. 7B. Further, in an extreme case, the weld bead 22 rises up to the side surface of the flange 28, and the required shape accuracy cannot be secured. Therefore, FIG.
As shown in (c), the pipe member 27 is accommodated and the flange 28
The jig 14 having an inner peripheral surface that contacts the side surface of the jig is used. When welding is performed with the side surface of the flange 28 covered by the jig 14, the heat concentrated on the flange 28 during welding is applied to the jig 1
4 to prevent the flange 28 from excessively rising in temperature and prevent distortion and deformation due to welding heat input. Moreover, since the side surface of the flange 28 is covered with the jig 14, the arc is prevented from wrapping around, and the flange 2 is not welded after welding.
8 is maintained in a healthy surface condition.
【００１５】パネルに骨材を溶接する場合には、図８に
示すように転動可能なローラ状治具３０を骨材３１の端
面に押し当てることが好ましい。ローラ状治具３０は、
図８（ａ）に示すように骨材３１を挟み込むダレ防止枠
３２に軸支され、加圧力Ｆで骨材３１の端面に押し付け
られる。ローラ状治具３０は、図８（ｂ）に示すように
溶接方向に関して複数個配置することができる。この場
合、複数のローラ状治具３０，３０・・を軸支するダレ
防止枠３２にフレーム３３を介して加圧力Ｆを加えるこ
とにより、各ローラ状治具３０は等しく骨材３１に押し
当てられる。また、フレーム３３に溶接トーチ３４を取
り付けるとき、溶接トーチ３４と同期してローラ状治具
３０，３０・・が移動する。したがって、骨材３１の必
要箇所がローラ状治具３０，３０・・でパネル３５に押
し付けられながら、骨材３１がパネル３５に隅肉溶接さ
れる。溶接ビート２２は、パネル３５と骨材３１の角部
に良好な形状で形成される。また、ローラ状治具３０，
３０・・及びダレ防止枠３２で保護されているため、ア
ーク１３が骨材３１の端面に回り込むこともない。その
ため、溶接後の仕上りも優れたものとなる。When the aggregate is welded to the panel, it is preferable to press a rollable jig 30 as shown in FIG. 8 against the end surface of the aggregate 31. The roller jig 30 is
As shown in FIG. 8A, the aggregate 31 is axially supported by a sagging prevention frame 32, and is pressed against the end surface of the aggregate 31 by a pressing force F. As shown in FIG. 8B, a plurality of roller jigs 30 can be arranged in the welding direction. In this case, by applying a pressing force F to the anti-sagging frame 32 that pivotally supports the plurality of roller jigs 30, 30, ... Via the frame 33, each roller jig 30 is pressed against the aggregate 31 equally. To be Further, when the welding torch 34 is attached to the frame 33, the roller jigs 30, 30 ... Move in synchronization with the welding torch 34. Therefore, while the necessary portions of the aggregate 31 are pressed against the panel 35 by the roller jigs 30, 30, ..., The aggregate 31 is fillet-welded to the panel 35. The welding beat 22 is formed in a good shape at the corners of the panel 35 and the aggregate 31. In addition, the roller jig 30,
.. and the sagging prevention frame 32, the arc 13 does not go around the end surface of the aggregate 31. Therefore, the finish after welding is also excellent.
【００１６】円筒状のケーシングにカバーを溶接封止す
る場合には、図９，１０に示すようにケーシングの外周
面に沿って転動する治具を使用することもできる。図９
の治具３６は、円筒体３７の端部にツバ部３８が一体成
形されており、回転軸３９を中心として回転する。円筒
体３７はケーシング１９の外周面に接し、ツバ部３９は
ケーシング１９の上端面に覆い被さる。加圧力Ｆで円筒
体３７をケーシング１９の外周面に押し付け、図９
（ｂ）に示すようにケーシング１９又は治具３６を相対
的に回転させるとき、治具３６は、回転しながらケーシ
ング１９の外周面を移動する。図１０の治具４０は、ケ
ーシング１９の外周面に沿って湾曲した内面をもつ治具
本体４１を備えており、治具本体４１の内面に複数のロ
ーラ４２が回転可能に設けられている。この治具４０
も、図１０（ｂ）に示すようにケーシング１９又は治具
４０を相対的に回転させるとき、回転しながらケーシン
グ１９の外周面を移動する。When the cover is welded and sealed to the cylindrical casing, a jig that rolls along the outer peripheral surface of the casing can be used as shown in FIGS. FIG.
The jig 36 has a brim portion 38 integrally formed with an end portion of a cylindrical body 37 and rotates about a rotation shaft 39. The cylindrical body 37 is in contact with the outer peripheral surface of the casing 19, and the brim portion 39 covers the upper end surface of the casing 19. The cylindrical body 37 is pressed against the outer peripheral surface of the casing 19 by the pressing force F, and
When the casing 19 or the jig 36 is relatively rotated as shown in (b), the jig 36 moves on the outer peripheral surface of the casing 19 while rotating. The jig 40 shown in FIG. 10 includes a jig body 41 having an inner surface curved along the outer peripheral surface of the casing 19, and a plurality of rollers 42 are rotatably provided on the inner surface of the jig body 41. This jig 40
Also, when the casing 19 or the jig 40 is relatively rotated as shown in FIG. 10B, the outer peripheral surface of the casing 19 is moved while rotating.
【００１７】[0017]
【実施例】ビスカスダンパの容器本体（ケーシング）に
カバーを溶接封止することに本発明を適用した実施例を
説明する。容器本体６としては、アルミ合金ＪＩＳ Ａ
６０６１の鍛造材で、外周壁の上端部の外径２７２ｍ
ｍ，内径２６４ｍｍ，深さ２４ｍｍの環状空洞部を形成
したものを使用した。環状空洞部に溶接封止される蓋７
としては、同じアルミ合金ＪＩＳ Ａ６０６１製板材
で、外径２６４ｍｍ，内径１７７ｍｍ，厚み４ｍｍの環
状円板を使用した。図１１（ａ）に示すように、環状空
洞部に鉄製リング４を収容した容器本体６に蓋７を溶接
封止する際、容器本体６を下面治具４３に載置し、中心
方向に向かって側面治具４４を押し付ける。下面治具４
３は、容器本体６の底面形状にぼぼ対応した窪みが表面
に形成されており、載置した容器本体６を安定支持す
る。側面治具４４は、円周方向に適宜の個数に分割され
ている。図１１の例では、三分割された側面治具４４を
容器本体６の外周面に押し付ける構造が採用されてい
る。EXAMPLE An example in which the present invention is applied to welding and sealing a cover on a container body (casing) of a viscous damper will be described. As the container body 6, aluminum alloy JIS A
6061 forged material, outer diameter 272m at the upper end of the outer peripheral wall
An annular cavity having a diameter of m, an inner diameter of 264 mm and a depth of 24 mm was used. Lid 7 welded and sealed to the annular cavity
The same aluminum alloy JIS A6061 plate material was used as an annular disc having an outer diameter of 264 mm, an inner diameter of 177 mm, and a thickness of 4 mm. As shown in FIG. 11 (a), when the lid 7 is welded and sealed to the container body 6 in which the iron ring 4 is housed in the annular cavity, the container body 6 is placed on the lower surface jig 43 and directed toward the center. And press the side jig 44. Lower surface jig 4
The surface of the container body 3 has a recess corresponding to the shape of the bottom surface of the container body 6, and stably supports the mounted container body 6. The side jig 44 is divided into an appropriate number in the circumferential direction. In the example of FIG. 11, a structure in which the three-sided side jig 44 is pressed against the outer peripheral surface of the container body 6 is adopted.
【００１８】容器本体６は、底面及び側面が下面治具４
３及び側面治具４４でそれぞれ支持された後、上面開放
部に蓋７が載せられる。蓋７は、容器本体６の環状空洞
部に適合する環状円板に成形されており、カバー押え治
具４５に加えた力で容器本体６に押し付けられる。カバ
ー押え治具４５は、蓋７の幅よりも若干小さい幅をもつ
環状円板である。そのため、蓋７上にカバー押え治具４
５を配置したとき、容器本体６と蓋７との間の溶接封止
部４６，４７がカバー押え治具４５の内周側及び外周側
に露出する。治具４３〜４５で位置関係が固定された容
器本体６と蓋７は、図１２に示すようにクランプ４８で
締め付けられ、チャック４９で支持される。そして、モ
ータ５０で容器本体６及び蓋７を回転しながら、溶接封
止部４６，４７を溶接する。図１１（ｂ）は、このよう
にして蓋７を容器本体６に溶接封止した状態を示す。The bottom surface and the side surface of the container body 6 are the lower surface jig 4
After being respectively supported by the 3 and the side jigs 44, the lid 7 is placed on the open upper surface. The lid 7 is formed into an annular disc that fits in the annular cavity of the container body 6, and is pressed against the container body 6 by the force applied to the cover holding jig 45. The cover pressing jig 45 is an annular disc having a width slightly smaller than the width of the lid 7. Therefore, the cover holding jig 4 is placed on the lid 7.
When 5 is arranged, the welded sealing portions 46 and 47 between the container body 6 and the lid 7 are exposed on the inner peripheral side and the outer peripheral side of the cover pressing jig 45. The container body 6 and the lid 7 whose positional relationship is fixed by the jigs 43 to 45 are clamped by a clamp 48 and supported by a chuck 49 as shown in FIG. Then, the welding sealing portions 46 and 47 are welded while the container body 6 and the lid 7 are rotated by the motor 50. FIG. 11B shows a state in which the lid 7 is welded and sealed to the container body 6 in this manner.
【００１９】溶接封止部４６，４７には、開先角度４５
〜７０度及び開先深さ１．５〜２ｍｍの開先をつけた。
シールドガスとしてアルゴンを流量２５リットル／分で
供給しながら、径１．２ｍｍの溶加材５３５６ＷＹを使
用し、電流１７０〜２３０Ａ，電圧１９．５〜２５Ｖ，
トーチ前進角１０度及び狙い角０度の条件下で溶接し
た。蓋７が溶接封止された容器本体６を治具４３〜４５
から取り出し、図１３に示すように、円周方向に沿って
等間隔でそれぞれ６か所の測定点Ｐで変形量を測定し
た。変形量の測定結果を治具の有無及び溶接速度で整理
したところ、図１４に示すように、治具４３〜４５を使
用せずに溶接した場合に比較して、治具４３〜４５で容
器本体６及び蓋７を拘束して溶接したものでは、変形量
が大幅に小さくなっていた。治具４３〜４５で容器本体
６及び蓋７を拘束したものであっても、溶接速度を上げ
るほど変形量が少なくなった。The weld sealing portions 46 and 47 have groove angles 45.
A groove with ˜70 degrees and a groove depth of 1.5-2 mm was attached.
While supplying argon as a shielding gas at a flow rate of 25 liters / minute, a filler material 5356WY having a diameter of 1.2 mm was used, a current of 170 to 230 A, a voltage of 19.5 to 25 V,
Welding was performed under the conditions of a torch advancing angle of 10 ° and an aiming angle of 0 °. The container body 6 in which the lid 7 is welded and sealed is attached to the jigs 43 to 45.
Then, as shown in FIG. 13, the deformation amount was measured at six measurement points P at equal intervals along the circumferential direction. When the measurement results of the amount of deformation are arranged according to the presence or absence of a jig and the welding speed, as shown in FIG. 14, as compared with the case where welding is performed without using the jigs 43 to 45, the container is determined by the jigs 43 to 45. In the case where the main body 6 and the lid 7 were restrained and welded, the amount of deformation was significantly reduced. Even when the container body 6 and the lid 7 were restrained by the jigs 43 to 45, the amount of deformation decreased as the welding speed increased.
【００２０】このことから、溶接時に治具４３〜４５で
熱吸収され、熱容量が異なる容器本体６及び蓋７の溶接
においてもヒートバランスが図られることが判る。その
結果、容器本体６及び蓋７の熱変形が抑えられ、容器本
体６のダレも防止できた。また、溶接速度２ｍ／分以下
でも、図１５で治具無し（ａ）と治具有り（ｂ）とを対
比して示すように、ダレが生じにくく、非溶融幅が大き
くなっていた。そのため、溶接速度５ｍ／分以上の高速
ＭＩＧ溶接で問題とされていた狙いにおいても条件が緩
和され、溶接が容易になった。更に、容器本体６と蓋７
の溶接個所に０．３ｍｍの隙間があっても変形量が小さ
いため、被溶接材の加工コストも低減できた。From this, it is understood that heat is absorbed by the jigs 43 to 45 during welding, and heat balance is achieved even when the container body 6 and the lid 7 having different heat capacities are welded. As a result, thermal deformation of the container body 6 and the lid 7 was suppressed, and the container body 6 was prevented from sagging. Further, even when the welding speed was 2 m / min or less, as shown in FIG. 15 by comparing the case without a jig (a) and the case with a jig (b), sagging did not easily occur and the non-melting width was large. Therefore, the conditions were relaxed and the welding became easier even with the aim that was a problem in high-speed MIG welding at a welding speed of 5 m / min or more. Further, the container body 6 and the lid 7
Even if there is a gap of 0.3 mm at the welding point, the amount of deformation is small, so the processing cost of the material to be welded could be reduced.
【００２１】[0021]
【発明の効果】以上に説明したように、本発明において
は、熱容量が大きく異なるアルミ部材の溶接に際し、溶
接部近傍の被溶接材料を覆い且つ熱容量を調整する機能
をもつ治具を配置し、ダレや溶け落ちを防止し、過剰な
入熱による変形や材質劣化を抑制している。また、アー
クの回り込みが治具によって防止されることから、溶接
されたアルミ部材の表面も溶接痕等の欠陥がない健全な
表面に維持される。しかも、過度な昇温が抑制されるこ
とから歪みや変形が抑えられ、溶接製品の形状精度が向
上する。このようにして、本発明によるとき、熱容量が
大きく異なるアルミ部材であっても、良好な形状特性及
び表面状態をもつ溶接製品が得られる。As described above, in the present invention, when welding aluminum members having greatly different heat capacities, a jig having a function of covering the material to be welded in the vicinity of the welded portion and adjusting the heat capacity is arranged, Prevents sagging and burn-through, and suppresses deformation and material deterioration due to excessive heat input. Further, since the arc is prevented from wrapping around by the jig, the surface of the welded aluminum member is also maintained as a sound surface free from defects such as welding marks. Moreover, since excessive temperature rise is suppressed, distortion and deformation are suppressed, and the shape accuracy of the welded product is improved. In this way, according to the present invention, a welded product having good shape characteristics and surface condition can be obtained even with aluminum members having greatly different heat capacities.
【図１】 鉄製リングを入れたビスカスダンパの一部を
切り欠いた斜視図FIG. 1 is a perspective view in which a part of a viscous damper having an iron ring is cut away.
【図２】 ビスカスダンパの容器本体にカシメにより蓋
を取りつけた断面図（ａ）及び封止部を拡大した断面図
（ｂ）2A and 2B are a cross-sectional view in which a lid is attached to a container body of a viscous damper by caulking and a cross-sectional view in which a sealing portion is enlarged (b).
【図３】 パネルに縦骨材を溶接している説明図FIG. 3 is an explanatory view of welding the vertical aggregate to the panel.
【図４】 本発明に従って治具を配置してパネルに縦骨
材を溶接している説明図（ａ），板材の端部を溶接して
いる説明図（ｂ），容器に蓋を溶接する場合の説明図
（ｃ）及び３枚の板を溶接する場合の説明図（ｄ）FIG. 4 is an explanatory view (a) in which a jig is arranged to weld a vertical aggregate to a panel according to the present invention, an explanatory view (b) in which an end portion of a plate material is welded, and a lid is welded to a container. Explanatory drawing (c) and explanatory drawing (d) when welding three plates
【図５】 ビスカスダンパのケーシング外周に治具を配
置してカバーを溶接している説明図（ａ）及び治具を使
用することなく溶接している説明図（ｂ）5A and 5B are an explanatory view in which a jig is arranged on the outer periphery of the casing of the viscous damper and the cover is welded, and an explanatory view in which the cover is welded without using the jig (b).
【図６】 本発明に従った治具の数例を示し、ケーシン
グと同じ高さをもつ治具（ａ），ケーシングより高い治
具（ｂ），水冷機構を内蔵した治具（ｃ），ケーシング
に覆い被さる治具（ｄ），ケーシングの表面との間に間
隙をもった突出部が形成されている治具（ｅ）及びケー
シングの表面より低い上端面をもつ治具（ｆ）を使用し
てカバーを溶接封止している状態FIG. 6 shows several examples of jigs according to the present invention, which have the same height as the casing (a), a jig higher than the casing (b), a jig having a water cooling mechanism (c), Use a jig (d) that covers the casing, a jig (e) that has a protrusion with a gap between it and the casing surface, and a jig (f) that has an upper end surface lower than the casing surface. The cover is welded and sealed
【図７】 管材にフランジを溶接する場合、目標とする
溶接後の形状（ａ），ダレが生じた溶接後の形状（ｂ）
及び本発明に従った治具を使用して形成された溶接後の
形状（ｃ）[Fig. 7] When welding a flange to a pipe material, a target shape after welding (a) and a shape after welding with sagging (b)
And a shape after welding (c) formed using the jig according to the invention
【図８】 ローラ状治具を使用して骨材を拘束しながら
溶接している状態を説明する断面図（ａ）及び側面図
（ｂ）FIG. 8 is a cross-sectional view (a) and a side view (b) illustrating a state in which the aggregate is restrained and welded while using a roller jig.
【図９】 ローラ状治具でケーシング側面を加圧しなが
らカバーを溶接封止する場合の側断面図（ａ）及び平面
図（ｂ）FIG. 9 is a side sectional view (a) and a plan view (b) in the case where the cover is weld-sealed while pressing the side surface of the casing with a roller jig.
【図１０】 ローラを備えた治具でケーシング側面を加
圧しながらカバーを溶接封止する場合の側断面図（ａ）
及び平面図（ｂ）FIG. 10 is a side sectional view when the cover is welded and sealed while pressing the side surface of the casing with a jig including a roller (a).
And plan view (b)
【図１１】 本発明実施例で溶接した容器本体及び蓋を
拘束する治具の斜視図（ａ）及び断面図（ｂ）FIG. 11 is a perspective view (a) and a sectional view (b) of a jig for restraining the container body and the lid welded in the embodiment of the present invention.
【図１２】 治具で拘束した容器本体及び蓋を回転させ
る機構の説明図FIG. 12 is an explanatory view of a mechanism for rotating a container body and a lid restrained by a jig.
【図１３】 溶接後の変形を調査した測定点を示す側面
図（ａ）及び平面図（ｂ）FIG. 13 is a side view (a) and a plan view (b) showing measurement points for investigating deformation after welding.
【図１４】 溶接されたビスカスダンパの変形量に及ぼ
す治具の影響及び溶接速度を表したグラフFIG. 14 is a graph showing the effect of a jig on the amount of deformation of a welded viscous damper and the welding speed.
【図１５】 ダレの長さ及び非溶融幅に及ぼす治具の影
響及び溶接速度を表したグラフFIG. 15 is a graph showing the effect of a jig on the sagging length and the non-melting width and the welding speed.
１：円形平板部 ２：環状容器部 ３：開口部
４：鉄製リング ５：緩衝材 ６：容器本体
７：蓋 ８：上部壁 ９：ツバ部 １０：シール
剤 １１：パネル １２：縦骨材 １３：アーク
１４：治具 １５：押え部 １６：溶接ビード １７：傾斜面
１８：被溶接材 １９：ケーシング ２０：段部
２１：カバー ２２：溶接ビード ２３：継手
部 ２４：開先 ２５：突出部 ２６：間隙
２７：管材 ２８：フランジ ２９：ダレ ３０ローラ状治具
３１：骨材 ３２：ダレ防止枠 ３３：フレーム
３４：溶接トーチ ３５：パネル ３６：治具
３７：円筒体 ３８：ツバ部 ３９：回転軸
４０：治具 ４１：治具本体 ４２：ローラ ４３：下面治具
４４：側面治具 ４５：カバー押え治具 ４６：
内周側溶接封止部 ４７：外周側溶接封止部 ４８：クランプ ４９：チャック ５０：モータ1: Circular flat plate 2: Annular container 3: Opening
4: Iron ring 5: Buffer material 6: Container body
7: Lid 8: Upper wall 9: Collar 10: Sealing agent 11: Panel 12: Vertical aggregate 13: Arc 14: Jig 15: Holding part 16: Weld bead 17: Inclined surface
18: Material to be welded 19: Casing 20: Step 21: Cover 22: Weld bead 23: Joint 24: Groove 25: Projection 26: Gap
27: pipe material 28: flange 29: sag 30 roller jig
31: Aggregate 32: Anti-sagging frame 33: Frame 34: Welding torch 35: Panel 36: Jig 37: Cylindrical body 38: Flange 39: Rotating shaft
40: jig 41: jig body 42: roller 43: bottom jig
44: Side jig 45: Cover holding jig 46:
Inner circumference welded seal 47: Outer circumference welded seal 48: Clamp 49: Chuck 50: Motor
─────────────────────────────────────────────────────
────────────────────────────────────────────────── ───
【手続補正書】[Procedure amendment]
【提出日】平成７年１１月２０日[Submission date] November 20, 1995
【手続補正１】[Procedure amendment 1]
【補正対象書類名】明細書[Document name to be amended] Statement
【補正対象項目名】０００７[Correction target item name] 0007
【補正方法】変更[Correction method] Change
【補正内容】[Correction contents]
【０００７】[0007]
【課題を解決するための手段】本発明のアーク溶接方法
は、その目的を達成するため、熱容量の大きいアルミ部
材に熱容量の小さいアルミ部材を溶接するとき、熱容量
の大きい治具を前記熱容量の小さいアルミ部材に接触さ
せ、前記熱容量の大きいアルミ部材と前記熱容量の小さ
いアルミ部材との間をアーク溶接することを特徴とす
る。また、被溶接材の表面に対するアークの広がり幅Ｗ
ａより被溶接材の幅Ｗｂが小さい場合に、熱容量の大き
い治具を被溶接材の溶融させたくない面に接触させて、
アーク溶接することを特徴とする。治具の幅をＷｊ，被
溶接材の幅をＷｂ，被溶接材表面におけるアークの広が
り幅をＷａとするとき、アークの回り込みを防止する上
で、Ｗｊ＞Ｗａ−Ｗｂの幅をもつ治具を使用することが
好ましい。治具としては、水冷又は空冷機構を内蔵した
ものを使用することができる。本発明に従って、円筒形
状のアルミ製ケーシングにカバーを溶接することができ
る。この場合には、ケーシング本体及びカバーと同じ高
さに上端面がある治具、或いはケーシングの上端面一部
を覆う治具等が使用される。In order to achieve the object, the arc welding method according to the present invention, when welding an aluminum member having a small heat capacity to an aluminum member having a large heat capacity, a jig having a large heat capacity is used for the welding. The aluminum member is brought into contact with the aluminum member, and the aluminum member having the large heat capacity and the aluminum member having the small heat capacity are arc-welded. Also, the width W of the arc spread over the surface of the material to be welded
When the width W b of the material to be welded is smaller than that of a, a jig having a large heat capacity is brought into contact with the surface of the material to be welded which is not to be melted,
Characterized by arc welding. When the width of the jig is W j , the width of the material to be welded is W b , and the spread width of the arc on the surface of the material to be welded is W a , in order to prevent the arc from wrapping, W j > W a −W b It is preferable to use a jig having a width of. As the jig, one having a built-in water cooling or air cooling mechanism can be used. According to the invention, the cover can be welded to a cylindrical aluminum casing. In this case, a jig having an upper end surface at the same height as the casing main body and the cover, or a jig covering a part of the upper end surface of the casing is used.
【手続補正２】[Procedure amendment 2]
【補正対象書類名】明細書[Document name to be amended] Statement
【補正対象項目名】０００９[Correction target item name] 0009
【補正方法】変更[Correction method] Change
【補正内容】[Correction contents]
【０００９】[0009]
【作用】熱容量が大きく異なるアルミ部材を溶接すると
き、アルミ部材の熱伝導量が大きく、しかも比較的融点
が低いことから、溶接時の入熱による損傷は鉄系部材の
溶接に比較して大きくなる。たとえば、図３に示すよう
にパネル１１に縦骨材１２をアーク溶接するとき、アー
クの広がり幅に較べて縦骨材１２の高さが低いＴ型継手
ではアーク１３の回り込みによってダレが生じ易く、健
全なリブ形状を維持することができない。また、縦骨材
１２の高さが低いＴ型継手では、パネル１１と縦骨材１
２とのヒートバランスが悪く、パネル１１に比較して縦
骨材１２が過度に昇温する結果、縦骨材１２の材質が軟
化し、材料強度が低下する。本発明は、このようなアー
クの回り込みや過度の昇温を防止するため、図４に示す
ような治具１４を使用する。治具１４としては、熱伝導
率が高くアルミ製被溶接材との熱伝達がし易い材料で熱
容量の大きなものが好ましい。たとえば、被溶接材より
断面積が大きく、密着する形状に作製されたアルミ材，
銅材等の材質でできたものが使用される。[Operation] When welding aluminum members with greatly different heat capacities, the amount of heat conduction of the aluminum members is large and the melting point is relatively low, so the damage due to heat input during welding is greater than that of welding of iron-based members. Become. For example, as shown in FIG. 3, when the vertical aggregate 12 is arc-welded to the panel 11, in a T-shaped joint in which the height of the vertical aggregate 12 is lower than the spread width of the arc, sagging easily occurs due to the wraparound of the arc 13. , Can not maintain a sound rib shape. In addition, in the T-shaped joint in which the height of the vertical aggregate 12 is low, the panel 11 and the vertical aggregate 1 are
The heat balance with No. 2 is poor and the temperature of the vertical aggregate 12 is excessively increased as compared with that of the panel 11. As a result, the material of the vertical aggregate 12 is softened and the material strength is lowered. The present invention uses a jig 14 as shown in FIG. 4 in order to prevent such arc wraparound and excessive temperature rise. As the jig 14, it is preferable to use a material having a high heat conductivity and easy heat transfer to the material to be welded made of aluminum and having a large heat capacity. For example, an aluminum material that has a larger cross-sectional area than the material to be welded and is formed into a close contact,
A material made of a material such as copper is used.
【手続補正３】[Procedure 3]
【補正対象書類名】明細書[Document name to be amended] Statement
【補正対象項目名】００１６[Correction target item name] 0016
【補正方法】変更[Correction method] Change
【補正内容】[Correction contents]
【００１６】円筒状のケーシングにカバーを溶接封止す
る場合には、図９，１０に示すようにケーシングの外周
面に沿って転動する治具を使用することもできる。図９
の治具３６は、円筒体３７の端部にツバ部３８が一体成
形されており、回転軸３９を中心として回転する。円筒
体３７はケーシング１９の外周面に接し、ツバ部３８は
ケーシング１９の上端面に覆い被さる。加圧力Ｆで円筒
体３７をケーシング１９の外周面に押し付け、図９
（ｂ）に示すようにケーシング１９又は治具３６を相対
的に回転させるとき、治具３６は、回転しながらケーシ
ング１９の外周面を移動する。図１０の治具４０は、ケ
ーシング１９の外周面に沿って湾曲した内面をもつ治具
本体４１を備えており、治具本体４１の内面に複数のロ
ーラ４２が回転可能に設けられている。この治具４０
も、図１０（ｂ）に示すようにケーシング１９又は治具
４０を相対的に回転させるとき、回転しながらケーシン
グ１９の外周面を移動する。When the cover is welded and sealed to the cylindrical casing, a jig that rolls along the outer peripheral surface of the casing can be used as shown in FIGS. FIG.
The jig 36 has a brim portion 38 integrally formed with an end portion of a cylindrical body 37 and rotates about a rotation shaft 39. The cylindrical body 37 is in contact with the outer peripheral surface of the casing 19, and the brim portion 38 covers the upper end surface of the casing 19. The cylindrical body 37 is pressed against the outer peripheral surface of the casing 19 by the pressing force F, and
When the casing 19 or the jig 36 is relatively rotated as shown in (b), the jig 36 moves on the outer peripheral surface of the casing 19 while rotating. The jig 40 shown in FIG. 10 includes a jig body 41 having an inner surface curved along the outer peripheral surface of the casing 19, and a plurality of rollers 42 are rotatably provided on the inner surface of the jig body 41. This jig 40
Also, when the casing 19 or the jig 40 is relatively rotated as shown in FIG. 10B, the outer peripheral surface of the casing 19 is moved while rotating.
───────────────────────────────────────────────────── フロントページの続き (72)発明者 樋野 治道 静岡県庵原郡蒲原町蒲原１丁目34番１号 日本軽金属株式会社グループ技術センター 内 (72)発明者 小林 正幸 東京都港区三田３丁目13番12号 日本軽金 属株式会社内 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Jindo Hino, Inventor, 1-34-1 Kambara, Kambara-cho, Anbara-gun, Shizuoka Prefecture Nippon Light Metal Co., Ltd. Group Technology Center (72) Masayuki Kobayashi 3-chome, Mita, 13 Minato-ku, Tokyo No. 12 Nippon Light Metal Co., Ltd.
Claims (15)
さいアルミ部材を溶接するとき、熱容量の大きい治具を
前記熱容量の小さいアルミ部材に接触させ、前記熱容量
の大きいアルミ部材と前記熱容量の小さいアルミ部材と
の間をアーク溶接することを特徴とするアルミ部材のア
ーク溶接方法。1. When welding an aluminum member having a large heat capacity to an aluminum member having a large heat capacity, a jig having a large heat capacity is brought into contact with the aluminum member having a small heat capacity so that the aluminum member having a large heat capacity and the aluminum member having a small heat capacity. An arc welding method for an aluminum member, characterized in that the arc welding is performed between and.
り放射されるアークの被溶接材の表面に対する広がり幅
Ｗa より小さい場合、熱容量の大きい治具を被溶接材の
溶融させたくない面に接触させてアーク溶接することを
特徴とするアルミ部材のアーク溶接方法。2. When the width W b of the material to be welded is smaller than the spread width W a of the arc radiated from the electrode of the welding torch with respect to the surface of the material to be welded, it is desired to melt the material to be welded with a jig having a large heat capacity. An arc welding method for an aluminum member, which comprises performing arc welding by contacting a non-coated surface.
被溶接材の幅をＷb，被溶接材表面におけるアークの広
がり幅をＷa とするとき、Ｗj ＞Ｗa −Ｗbの幅をもつ
治具を使用するアルミ部材のアーク溶接方法。3. The width of the jig according to claim 1 or 2 is W j ,
Width W b of the material to be welded, when the arc spreading width W a of the material to be welded surface, W j> W a -W b arc welding method of aluminum members used a jig having a width of.
冷又は空冷機構を内蔵しているアルミ部材のアーク溶接
方法。4. An arc welding method for an aluminum member, wherein the jig according to any one of claims 1 to 3 incorporates a water cooling or air cooling mechanism.
ルミ製ケーシング本体に当接させ、該アルミ製ケーシン
グ本体にアルミ製カバーを溶接する際、前記ケーシング
本体及び前記カバーと同じ高さに上端面がある治具を使
用するアルミ部材のアーク溶接方法。5. When the jig according to claim 1 is brought into contact with an aluminum casing body and an aluminum cover is welded to the aluminum casing body, the same as the casing body and the cover. Arc welding method for aluminum parts using a jig with a top surface at the height.
ルミ製ケーシング本体に当接させ、同一平面を形成する
ように前記アルミ製ケーシング本体にアルミ製カバーを
溶接する際、前記ケーシングの溶接個所の板厚をｔ，前
記ケーシング上端面からの治具高さをｔ1 とするとき、
ｔ1 ≦１００／ｔの治具高さをｔ1 をもつ治具を使用す
るアルミ部材のアーク溶接方法。6. When the jig according to any one of claims 1 to 3 is brought into contact with an aluminum casing body and an aluminum cover is welded to the aluminum casing body so as to form the same plane, When the plate thickness of the welded portion of the casing is t and the jig height from the upper end surface of the casing is t 1 ,
Arc welding method aluminum members jig height t 1 ≦ 100 / t using a jig with t 1.
ルミ製ケーシング本体に当接させ、同一平面を形成する
ように前記アルミ製ケーシング本体にアルミ製カバーを
溶接する際、前記ケーシングの溶接個所の板厚をｔ，前
記ケーシング上端面に被さる突出部の治具幅をｔ2 とす
るとき、ｔ2 ＜ｔの治具幅ｔ2 をもつ治具を使用するア
ルミ部材のアーク溶接方法。7. When the jig according to claim 1 is brought into contact with an aluminum casing body and an aluminum cover is welded to the aluminum casing body so as to form the same plane, An arc of an aluminum member using a jig having a jig width t 2 of t 2 <t, where t is the plate thickness at the welded portion of the casing and t 2 is the jig width of the protruding portion covering the upper end surface of the casing. Welding method.
グ本体に当接させ、同一平面を形成するように前記アル
ミ製ケーシング本体にアルミ製カバーを溶接する際、前
記ケーシングの上端面から前記ケーシング表面に被さる
治具面までの距離をｔ3 とするとき、ｔ3 ≦ｔ2 の距離
ｔ3 をもつ治具を使用するアルミ部材のアーク溶接方
法。8. A jig according to claim 7 is brought into contact with an aluminum casing body, and when an aluminum cover is welded to the aluminum casing body so as to form the same plane, the aluminum cover is welded from the upper end surface of the casing. An arc welding method for an aluminum member, wherein a jig having a distance t 3 of t 3 ≤t 2 is used, where t 3 is the distance to the jig surface covering the casing surface.
方のアルミ製ケーシング本体に当接させ、同一平面を形
成するように前記アルミ製ケーシング本体にアルミ製カ
バーを溶接する際、前記アルミ製ケーシングの上端面よ
り低い高さｔ4 の治具高さをもつ治具を使用するアルミ
部材のアーク溶接方法。9. When the jig according to any one of claims 1 to 3 is brought into contact with one aluminum casing body and an aluminum cover is welded to the aluminum casing body so as to form the same plane. An arc welding method for an aluminum member using a jig having a jig height of a height t 4 lower than the upper end surface of the aluminum casing.
する際、前記骨材の端面を転動するローラ状治具を備え
た溶接機を使用し、前記ローラ状治具を前記骨材の端面
に加圧した状態で溶接トーチと同期して走行させる請求
項１〜３の何れかに記載のアーク溶接方法。10. When welding an aluminum aggregate to an aluminum panel, a welding machine equipped with a roller jig that rolls the end face of the aggregate is used, and the roller jig is used to weld the aggregate of the aggregate. The arc welding method according to any one of claims 1 to 3, wherein the arc welding is carried out in synchronization with a welding torch in a state where pressure is applied to the end surface.
材の両面をはさむダレ防止枠に軸支され、骨材の側面に
押圧されるアーク溶接方法。11. The arc welding method according to claim 10, wherein the roller-shaped jig is axially supported by a sagging prevention frame sandwiching both surfaces of the aggregate and pressed against the side surface of the aggregate.
のカバーを溶接する際、前記ケーシングの外周面に沿っ
て移動する治具を使用してアーク溶接する請求項１〜３
の何れかに記載のアーク溶接方法。12. The arc welding is performed by using a jig which moves along the outer peripheral surface of the casing when the disc-shaped cover is welded to the cylindrical aluminum casing.
The arc welding method according to any one of 1.
る請求項１〜１２の何れかに記載のアーク溶接方法。13. The arc welding method according to claim 1, wherein the arc welding is performed at a welding speed of 1 to 7 m / min.
ク溶接された溶接製品。14. A welded product arc-welded by the method according to claim 1.
方法でアーク溶接されたアルミニウム製ビスカスダン
パ。15. A viscous damper made of aluminum arc-welded by the method according to any one of claims 1 to 9, 12, and 13.
Priority Applications (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP28806795A JP3585609B2 (en) | 1995-03-27 | 1995-10-09 | Arc welding method and welding products for aluminum members |
| US08/589,193 US5811756A (en) | 1995-01-23 | 1996-01-22 | ARC welding method for aluminum members and welded product excellent in dimensional accuracy and external appearance |
| EP96100936A EP0722804A3 (en) | 1995-01-23 | 1996-01-23 | Arc welding method for aluminum members and welded product |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9306695A JPH08257784A (en) | 1995-03-27 | 1995-03-27 | Groove for welding and welding method of aluminum material |
| JP28806795A JP3585609B2 (en) | 1995-03-27 | 1995-10-09 | Arc welding method and welding products for aluminum members |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH09103884A true JPH09103884A (en) | 1997-04-22 |
| JP3585609B2 JP3585609B2 (en) | 2004-11-04 |
Family
ID=33492315
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP28806795A Expired - Fee Related JP3585609B2 (en) | 1995-01-23 | 1995-10-09 | Arc welding method and welding products for aluminum members |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3585609B2 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2004086474A1 (en) * | 2003-03-25 | 2004-10-07 | Hitachi Kokusai Electric Inc. | Container, container producing method, substrate processing device, and semiconductor device producing method |
-
1995
- 1995-10-09 JP JP28806795A patent/JP3585609B2/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2004086474A1 (en) * | 2003-03-25 | 2004-10-07 | Hitachi Kokusai Electric Inc. | Container, container producing method, substrate processing device, and semiconductor device producing method |
| KR100712783B1 (en) * | 2003-03-25 | 2007-05-02 | 가부시키가이샤 히다치 고쿠사이 덴키 | Container, container producing method, substrate processing device, and semiconductor device producing method |
Also Published As
| Publication number | Publication date |
|---|---|
| JP3585609B2 (en) | 2004-11-04 |
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