JP2000237893A - Weld joint and its production method - Google Patents
Weld joint and its production methodInfo
- Publication number
- JP2000237893A JP2000237893A JP11040043A JP4004399A JP2000237893A JP 2000237893 A JP2000237893 A JP 2000237893A JP 11040043 A JP11040043 A JP 11040043A JP 4004399 A JP4004399 A JP 4004399A JP 2000237893 A JP2000237893 A JP 2000237893A
- Authority
- JP
- Japan
- Prior art keywords
- fitting
- welded
- welding
- hollow portion
- opening
- 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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- Butt Welding And Welding Of Specific Article (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】この発明は、自動車部品など
の各種資材として使用される溶接継手およびその製造方
法に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a welded joint used as various materials such as automobile parts and a method for manufacturing the same.
【０００２】[0002]
【従来の技術】従来、この種の継手として、図３に示す
ものがある。この継手は、他端面が閉塞された金属製パ
イプのように、有底の嵌合凹部２１Ａを有する被溶接部
材２１と、端面２２ａに縮径状の嵌合凸部２２ｂが一体
形成された金属製中実丸棒からなる被溶接部材２２とに
よって構成されている。2. Description of the Related Art FIG. 3 shows a conventional joint of this type. This joint is a metal pipe in which a welded member 21 having a bottomed fitting recess 21A and a reduced-diameter fitting projection 22b are integrally formed on an end face 22a, such as a metal pipe having the other end face closed. And a welded member 22 formed of a solid round bar.
【０００３】そして、一方の被溶接部材２１の前記嵌合
凹部２１Ａに、他方の被溶接部材２２の前記嵌合凸部２
２ｂを嵌入するとともに、被溶接部材２１の端面２１ａ
に他方の被溶接部材２２の端面２２ａを突き合わせ、こ
の状態で両被溶接部材２１，２２の突き合わせ部外周面
の開先処理部２１ｃ，２２ｃに、例えばアーク溶接など
を施し、これにより、両被溶接部材２１，２２を一体結
合したものである。[0003] The fitting concave portion 21A of one member to be welded 21 is fitted into the fitting convex portion 2A of the other member to be welded 22.
2b and the end face 21a of the member 21 to be welded.
Then, the end faces 22a of the other member 22 to be welded are butted, and in this state, for example, arc welding or the like is performed on the groove processing portions 21c and 22c on the outer peripheral surfaces of the butted portions of the two members to be welded 21 and 22. The welding members 21 and 22 are integrally connected.
【０００４】このような溶接継手においては、一方の被
溶接部材２１の嵌合凹部２１Ａに他方の被溶接部材２２
の嵌合凸部２２ｂを嵌入する構成のため、溶接時の被溶
接部材２１，２２の軸ずれが起きず、溶接作業が円滑に
行えるなどの利点がある。[0004] In such a welded joint, a fitting recess 21A of one member 21 to be welded is fitted into another member 22 to be welded.
Since the fitting projections 22b are fitted, there is an advantage that the members to be welded 21 and 22 are not misaligned at the time of welding and the welding operation can be performed smoothly.
【０００５】[0005]
【発明が解決しようとする課題】ところが、この溶接継
手は、多くの場合、嵌合凸部２２ｂの長さが嵌合凹部２
１Ａの長さよりも短く、従って嵌合凸部２２ｂは嵌合凹
部２１Ａの深さ方向の途中の位置まで嵌入されて、嵌合
凹部２１Ａの後端側に密閉状の中空部２１Ｂが形成され
るのが一般である。However, in most cases, the length of the fitting projection 22b is smaller than that of the fitting recess 2b.
The length of the fitting protrusion 22b is shorter than the length of the fitting recess 22A, so that the fitting recess 22A is fitted to a position halfway in the depth direction of the fitting recess 21A, and a closed hollow portion 21B is formed at the rear end side of the fitting recess 21A. It is common.
【０００６】このため、溶接が進むにつれて溶接時の熱
により上記被溶接部材２１の中空部２１Ｂの空気が膨張
して、その内圧が上昇する結果、この空気が溶接部から
噴出するいわゆる突沸現象が起きて、溶接不能になった
り、溶接不良による強度低下を招くことがある。Therefore, as the welding proceeds, the air in the hollow portion 21B of the member to be welded 21 expands due to the heat generated during welding, and the internal pressure rises. As a result, a so-called bumping phenomenon in which this air is ejected from the welded portion occurs. In some cases, welding may not be possible, or strength may be reduced due to poor welding.
【０００７】このような事態を防止するため、従来で
は、溶接時に被溶接部材２１を冷却したり、あるいは中
空部２１Ｂの位置において、予め被溶接部材２１の肉厚
を半径方向へ貫通して中空部２１Ｂと外部とを連通する
ガス抜き孔２３を形成したりする方法が提案されてい
る。In order to prevent such a situation, conventionally, the member to be welded 21 is cooled at the time of welding, or the thickness of the member to be welded 21 is previously penetrated in the radial direction at the position of the hollow portion 21B. A method of forming a gas vent hole 23 that communicates the portion 21B with the outside has been proposed.
【０００８】しかし、前者の方策では、冷却しながらの
溶接のために、溶接の作業性が低下するのは避けられな
いうえ、冷却能力をかなり上げないと、上記突沸現象を
有効に抑えることが困難であった。また、後者の方策で
は、溶接後に、上記ガス抜き孔２３の外部露出部をわざ
わざ閉塞させなければならない煩わしさがあった。However, in the former method, it is inevitable that the workability of welding is reduced due to welding while cooling, and the bumping phenomenon can be effectively suppressed unless the cooling capacity is considerably increased. It was difficult. Further, in the latter method, there is a trouble that the externally exposed portion of the gas vent hole 23 must be closed after welding.
【０００９】この発明は、上記課題を解消するためにな
されたものであり、密閉状の中空部が形成された溶接継
手において、簡単な構成でありながら溶接作業を速やか
に行えるうえ、溶接部の突沸現象を未然に防止できる溶
接継手およびその製造方法を提供することを目的とす
る。SUMMARY OF THE INVENTION The present invention has been made to solve the above-described problems. In a welded joint having a hermetically sealed hollow portion, the welding operation can be performed quickly with a simple structure, and the welded portion can be formed easily. An object of the present invention is to provide a welded joint capable of preventing bumping beforehand and a method of manufacturing the same.
【００１０】[0010]
【課題を解決するための手段】上記課題は、有底の嵌合
凹部を有する一方の被溶接部材と、嵌合凸部を有する他
方の被溶接部材とが、前記嵌合凸部が前記嵌合凹部の深
さ方向の途中の位置まで嵌入されることにより、嵌合凹
部の後端側に密閉状の中空部が形成された状態に組み付
けられるとともに、前記嵌合凹部の開口部周縁におい
て、両被溶接部材の外周部が溶接固定されてなる溶接継
手において、一端が前記中空部に開口し他端が前記嵌合
凹部の開口部またはその近傍に開口して、前記密閉状の
中空部と外部とを連通するための通気孔が形成されてい
ることを特徴とする溶接継手によって解決される。The object of the present invention is to provide a method in which one of the members to be welded having a fitting recess with a bottom and the other member to be welded having a fitting protrusion are formed by fitting the fitting protrusion into the fitting member. By being fitted to a position halfway in the depth direction of the fitting recess, the fitting recess is assembled in a state where a closed hollow portion is formed on the rear end side, and at the opening periphery of the fitting recess, In a welded joint in which the outer peripheral portions of both members to be welded are fixed by welding, one end is opened to the hollow portion and the other end is opened to the opening of the fitting concave portion or in the vicinity thereof, and the hermetically sealed hollow portion is formed. The problem is solved by a welded joint characterized in that a vent hole for communicating with the outside is formed.
【００１１】この溶接継手によれば、溶接熱で上記被溶
接部材の中空部内の空気が膨張しようとしても、通気孔
によるガス抜き作用で前記内圧が一定に保持され、溶接
時の前記突沸現象が未然に防止される。また、前記通気
孔は、一端が前記中空部に開口し他端が前記嵌合凹部の
開口部またはその近傍に開口しているので、両被接合部
材の溶接時に同時に通気孔を閉塞できる。According to this welded joint, even if the air in the hollow portion of the member to be welded expands due to welding heat, the internal pressure is kept constant by the venting action of the ventilation holes, and the bumping phenomenon during welding is suppressed. It is prevented beforehand. Further, the vent hole has one end opened to the hollow portion and the other end opened to the opening of the fitting concave portion or its vicinity, so that the vent holes can be closed at the same time when the two members to be joined are welded.
【００１２】また、前記課題は、有底の嵌合凹部を有す
る一方の被溶接部材と、嵌合凸部を有する他方の被溶接
部材とを、前記嵌合凸部を前記嵌合凹部の深さ方向の途
中の位置まで嵌入することにより、嵌合凹部の後端側に
密閉状の中空部が形成された状態に組み付けるととも
に、前記嵌合凹部の開口部周縁において、両被溶接部材
の外周部を溶接固定するに際し、一端が前記中空部に開
口し他端が前記嵌合凹部の開口部またはその近傍に開口
して、前記密閉状の中空部と外部とを連通するための通
気孔を形成しておき、溶接時には、その最終段階で、前
記通気孔の嵌合凹部側の開口部を溶着金属で閉塞するこ
とを特徴とする密封溶接継手の製造方法によっても解決
される。[0012] Further, the object is to provide a method in which one member to be welded having a bottomed fitting recess and the other member to be welded having a fitting protrusion are formed by connecting the fitting protrusion to the depth of the fitting recess. The fitting recess is fitted to a position in the middle of the fitting recess to form a hermetically sealed hollow portion at the rear end side of the fitting recess. At the time of welding and fixing the portion, one end is opened in the hollow portion and the other end is opened in or near the opening of the fitting concave portion, and a ventilation hole for communicating the sealed hollow portion with the outside is provided. It is also possible to solve the problem by a method for manufacturing a hermetically welded joint, characterized in that at the time of welding, the opening at the fitting recess side of the ventilation hole is closed with a weld metal at the final stage.
【００１３】この方法によれば、嵌合凹部の開口部また
はその近傍に開口する通気孔の開口部を、溶接の最終時
点で閉塞するから、溶接時の通気孔のガス抜き作用を妨
げることなく溶接の最後までその作用が有効に発揮され
るのはもとより、溶接作業の工程内で通気孔の閉塞作業
を併せて実施できるから、溶接作業の終了後に、わざわ
ざ通気孔を閉塞する作業が不要となる。According to this method, since the opening of the fitting recess or the opening of the ventilation hole opening in the vicinity thereof is closed at the final point of welding, the venting of the ventilation hole at the time of welding is not hindered. In addition to the effect being effectively exerted until the end of welding, the work of closing the ventilation holes can be performed simultaneously during the welding process, so there is no need to specifically close the ventilation holes after the welding work is completed. Become.
【００１４】[0014]
【発明の実施の形態】以下、この発明の一実施形態に係
る溶接継手について、図面に従って説明する。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, a welded joint according to an embodiment of the present invention will be described with reference to the drawings.
【００１５】図１はこの発明の一実施形態に係る溶接継
手を示す一部破断正面図である。FIG. 1 is a partially broken front view showing a welded joint according to an embodiment of the present invention.
【００１６】同図において、この溶接継手は、有底円筒
形の嵌合凹部１Ａを有する被溶接部材、たとえば他端閉
塞のＡｌ製円形パイプ１と、このパイプ１の一端の開口
端面１ａに結合される他方の被溶接部材、たとえばＡｌ
製の鍛造品である中実丸棒２と、パイプ１と丸棒２との
突き合わせ部外周面に溶接された溶接部（溶着金属）Ｍ
とからなる。In this figure, this welded joint is connected to a member to be welded having a bottomed cylindrical fitting recess 1A, for example, an Al circular pipe 1 closed at the other end, and an open end face 1a at one end of the pipe 1. To be welded, for example, Al
(Weld metal) M welded to the outer peripheral surface of the butt portion of the solid round bar 2 and the pipe 1 and the round bar 2 which is a forged product made of steel
Consists of
【００１７】上記パイプ１には、上記嵌合凹部１Ａの開
口部の外周面に、開先処理により開口端面１ａ側に至る
につれて径小化する環状のテーパ面１ｃが、たとえば４
５度の傾斜角度で形成されている。The pipe 1 has an annular tapered surface 1c on the outer peripheral surface of the opening of the fitting recess 1A, the diameter of which decreases toward the opening end surface 1a by a groove process, for example, 4 mm.
It is formed at an inclination angle of 5 degrees.
【００１８】なお、上記パイプ１に限らず、有底嵌合凹
部１Ａを有するものであれば、被溶接部材としての形状
や材質は、任意である。The shape and material of the member to be welded are not limited to the pipe 1 as long as the member has the bottomed recess 1A.
【００１９】他方、上記丸棒２は上記パイプ１とほぼ同
じ外径を有するとともに、上記パイプ１に対する結合側
の外周面に、開先処理により端面２ａ側に至るにつれて
径小化する環状のテーパ面２ｃが、たとえば４５度の傾
斜角度で形成されている。さらに、上記結合側の端面２
ａには、上記パイプ１の嵌合凹部１Ａに嵌入される縮径
状の嵌合凸部２ｂが一体形成されている。この嵌合凸部
２ｂは、前記嵌合凹部１Ａの内径とほぼ同じかわずかに
小さい外径の断面円形に形成されている。On the other hand, the round bar 2 has substantially the same outer diameter as the pipe 1 and has an annular taper on the outer peripheral surface on the coupling side to the pipe 1 whose diameter decreases toward the end surface 2a by beveling. Surface 2c is formed at an inclination angle of, for example, 45 degrees. Furthermore, the end face 2 on the connection side
a, a reduced diameter fitting projection 2b fitted into the fitting recess 1A of the pipe 1 is integrally formed. The fitting projection 2b is formed in a circular cross section having an outer diameter substantially equal to or slightly smaller than the inner diameter of the fitting recess 1A.
【００２０】そして、この嵌合凸部２ｂを上記パイプ１
の嵌合凹部１Ａ内に嵌合して、パイプ１の端面１ａと丸
棒２の端面２ａを突き合わせると、上記テーパ面１ｃ，
２ｃにより、開先角度が９０度の断面Ｖ形の溶接用環状
凹所４が形成される。The fitting projection 2b is connected to the pipe 1
When the end face 1a of the pipe 1 and the end face 2a of the round bar 2 abut each other, the tapered surfaces 1c,
By 2c, an annular recess 4 for welding having a V-shaped cross section and a groove angle of 90 degrees is formed.
【００２１】なお、この溶接用環状凹所４の開先角度
は、９０度に限らず、任意に変更可能である。The groove angle of the welding annular recess 4 is not limited to 90 degrees and can be arbitrarily changed.
【００２２】上記嵌合凹部１Ａと嵌合凸部２ｂとの界面
には、両者の嵌合方向へ沿った態様で、内端が上記パイ
プ１の中空部１Ｂに開口し、他端がたとえば上記テーパ
面２ｃまで延びて、上記中空部１Ｂと外部とを連通させ
る横断面半円形の通気孔５（図２参照）が形成されてい
る。この通気孔５は、丸棒２における嵌合凸部２ｂの外
周面に、予め断面半円状の溝を形成しておくことで、容
易に形成することができる。また、この断面半円状の溝
を、丸棒２の鍛造段階で同時に成形すれば、工数を増や
すことなく、通気孔５を形成することができる。At the interface between the fitting concave portion 1A and the fitting convex portion 2b, the inner end is opened to the hollow portion 1B of the pipe 1 and the other end is formed, for example, in the direction along the fitting direction. An air hole 5 (see FIG. 2) having a semicircular cross section extending to the tapered surface 2c and communicating the hollow portion 1B with the outside is formed. This ventilation hole 5 can be easily formed by forming a groove having a semicircular cross section in advance on the outer peripheral surface of the fitting projection 2b of the round bar 2. If the groove having a semicircular cross-section is formed at the same time as the round bar 2 is forged, the ventilation hole 5 can be formed without increasing the number of steps.
【００２３】なお、通気孔５を形成するための溝は、嵌
合凸部２ｂの外周面ではなく、嵌合凹部１Ａの周面（パ
イプ１の内周面）に形成しても良いし、両方に形成して
も良い。The groove for forming the ventilation hole 5 may be formed not on the outer peripheral surface of the fitting convex portion 2b but on the peripheral surface of the fitting concave portion 1A (the inner peripheral surface of the pipe 1). It may be formed on both.
【００２４】また、この通気孔５は、上記嵌合凹部１Ａ
と嵌合凸部２ｂの界面に沿って形成されるものに限ら
ず、一端が前記中空部２Ｂに開口し他端が嵌合凹部１Ａ
の開口部またはその近傍に開口して、中空部２Ｂと外部
とを連通させるものであれば良く、たとえば嵌合凸部２
ｂ内を上記突き合わせ方向で貫通させることも可能であ
る。しかし、嵌合凸部２ｂと嵌合凹部１Ａとの界面に沿
って形成するのが、嵌合凸部２ｂの外周面または嵌合凹
部１Ａの周面に溝状の凹部を形成するのみで良いことか
ら、通気孔の形成が容易になる点で好ましい。The ventilation hole 5 is formed in the fitting recess 1A.
One end is open to the hollow portion 2B and the other end is a fitting concave portion 1A.
Any opening may be provided at or near the opening to allow communication between the hollow portion 2B and the outside.
It is also possible to penetrate the inside of b in the above-mentioned butting direction. However, formation along the interface between the fitting protrusion 2b and the fitting recess 1A is only required to form a groove-like recess on the outer peripheral surface of the fitting protrusion 2b or the peripheral surface of the fitting recess 1A. Therefore, it is preferable in that the formation of the ventilation hole is facilitated.
【００２５】上記溶接部Ｍは、アーク溶接、プラズマ溶
接，レーザ溶接，さらには電子ビーム溶接のような各種
の溶融溶接法のうちから選択された任意の方法で形成さ
れる。The weld M is formed by any method selected from various fusion welding methods such as arc welding, plasma welding, laser welding, and electron beam welding.
【００２６】上記構成において、パイプ１と丸棒２を溶
接で結合させるには、まず、パイプ１の嵌合凹部１Ａに
上記丸棒２の嵌合凸部２ｂを嵌入して、パイプ１の端面
１ａと丸棒２の端面２ａを突き合わせる。この状態で、
パイプ１と丸棒２の突き合わせ部の外周面、具体的に
は、上記溶接用環状凹所４に溶接を施せば、溶加材と母
材とが溶融した溶着金属Ｍにより、パイプ１と丸棒２が
一体に結合・固定され、密封溶接継手が製作される。こ
の溶接作業においては、上記通気孔５の近傍から溶接を
開始し、溶接終了段階で上記通気孔５を閉塞する。In the above configuration, in order to join the pipe 1 and the round bar 2 by welding, first, the fitting projection 2b of the round bar 2 is fitted into the fitting recess 1A of the pipe 1, and the end face of the pipe 1 1a and the end face 2a of the round bar 2 are abutted. In this state,
When welding is performed on the outer peripheral surface of the butted portion of the pipe 1 and the round bar 2, specifically, the welding annular recess 4, the welding metal M in which the filler metal and the base material are melted forms the pipe 1 and the round shape. The rods 2 are integrally connected and fixed to produce a sealed welded joint. In this welding operation, welding is started from the vicinity of the air hole 5, and the air hole 5 is closed at the end of welding.
【００２７】上記溶接に際しては、パイプ１の嵌合凹部
１Ａに上記丸棒２の嵌合凸部２ｂを嵌合させるので、両
部材１，２が位置決めされた安定状態で溶接を速やかに
行うことができる。At the time of the above welding, the fitting convex portion 2b of the round bar 2 is fitted into the fitting concave portion 1A of the pipe 1, so that welding is quickly performed in a stable state where both members 1 and 2 are positioned. Can be.
【００２８】とくに、一端が溶接用環状凹所４に開口す
る通気孔５の作用により、溶接時の熱で上記パイプ１の
中空部１Ｂの空気が膨張しても、上記通気孔５によりガ
ス抜きがなされるから、中空部１Ｂの内圧が上昇するこ
ともなくなり、溶接部Ｍに突沸現象が発生するのが未然
に防止される。In particular, even if the air in the hollow portion 1B of the pipe 1 expands due to the heat of welding due to the action of the vent hole 5 having one end opened to the annular recess 4 for welding, the vent hole 5 releases gas. Therefore, the internal pressure of the hollow portion 1B does not increase, and the occurrence of bumping in the welded portion M is prevented.
【００２９】さらに、上記通気孔５は、溶接終了段階で
閉塞されるので、溶接作業の間、通気孔５によるガス抜
き作用を有効に発揮させることができるとともに、両部
材１，２の溶接作業工程において閉塞されるので、溶接
後に別途、通気孔５の閉塞作業を行う必要がなく、生産
性が向上する。Further, since the vent hole 5 is closed at the end of welding, the gas venting action by the vent hole 5 can be effectively exhibited during the welding operation, and the welding operation of the two members 1 and 2 can be performed. Since it is closed in the process, there is no need to separately perform the work of closing the ventilation hole 5 after welding, and the productivity is improved.
【００３０】なお、以上の実施形態では、通気孔５を１
個形成した場合を示したが、２個以上設けても良い。ま
た、パイプ１の開口端面１ａと丸棒２の端面２ａを突き
合わせて、溶接用環状凹所４を形成したが、パイプ１の
開口端面１ａと丸棒２の端面２ａの突き合わせは、この
発明の要件ではない。In the above embodiment, the ventilation hole 5 is
Although the case of forming the individual pieces is shown, two or more pieces may be provided. Also, the welding annular recess 4 was formed by abutting the open end face 1a of the pipe 1 and the end face 2a of the round bar 2, but the abutting of the open end face 1a of the pipe 1 and the end face 2a of the round bar 2 is performed according to the present invention. Not a requirement.
【００３１】[0031]
【実施例】次に、上記構成の溶接継手の実施例１〜３を
従来例と対比して説明する。Next, Examples 1 to 3 of the above-described welded joint will be described in comparison with a conventional example.
【００３２】各例の溶接継手の製造条件は、以下の通り
である。The manufacturing conditions for the welded joint of each example are as follows.
【００３３】Ａ．供試材として、一端が閉塞されたＡｌ
製（６０６１ーＴ６）のパイプ１とＡｌ製（６０６１ー
Ｔ６）の丸棒２を、それぞれ複数本用意した。A. As a test material, Al with one end closed
A plurality of pipes 1 made of (6061-T6) and a plurality of round bars 2 made of Al (6061-T6) were prepared.
【００３４】上記パイプ１は、厚さが４ｍｍ、直径が３
０ｍｍ、長さが１００ｍｍであり、また、丸棒２は、直
径が３０ｍｍ、長さが１００ｍｍで、一端面に直径（差
し込み径）２２ｍｍの嵌合凸部２ｂが形成されている。The pipe 1 has a thickness of 4 mm and a diameter of 3 mm.
The round bar 2 has a diameter of 30 mm, a length of 100 mm, and a fitting protrusion 2b having a diameter (insertion diameter) of 22 mm on one end surface.
【００３５】そして、丸棒２の嵌合凸部２ｂをパイプ１
の嵌合凹部１Ａに、パイプ材と丸棒の端面１ａ、２ａが
突き合わされるまで嵌入した。この状態で、嵌合凹部１
Ａの後端側には密閉状の中空部１Ｂが形成された。ま
た、両部材の端面はテーパ加工して、突き合わせ状態に
おいて、溶接用環状凹所４が形成されるようにした。Then, the fitting projection 2b of the round bar 2 is connected to the pipe 1
Into the fitting recess 1A until the end faces 1a and 2a of the pipe material and the round bar abut against each other. In this state, the fitting recess 1
A closed hollow portion 1B was formed at the rear end side of A. In addition, the end surfaces of both members are tapered so that an annular recess 4 for welding is formed in the butted state.
【００３６】かかるパイプ１と丸棒２との組み付け状態
において、嵌合凹部１Ａと嵌合凸部２ｂとの界面に、中
空部１Ｂと溶接用環状凹所４とを連通する断面半円状の
通気孔５が１個形成されるように、嵌合凸部２ｂの外周
面に長さ方向に沿って、予め断面半円状の溝を形成して
おいた。In the assembled state of the pipe 1 and the round bar 2, a semicircular cross section communicating the hollow portion 1B and the annular welding recess 4 is formed at the interface between the fitting recess 1A and the fitting projection 2b. A groove having a semicircular cross section was formed in advance in the length direction on the outer peripheral surface of the fitting projection 2b so that one ventilation hole 5 was formed.
【００３７】そして、通気孔５の大きさを、表１のよう
に各種に変えたものを製作した。また、従来例として、
通気孔５を形成しなかったものも製作した。Then, various sizes of the ventilation holes 5 were manufactured as shown in Table 1. As a conventional example,
The one without the ventilation hole 5 was also manufactured.
【００３８】Ｂ．溶加材として、５３５６ｗｙ−１．２
ｍｍを使用した。B. 5356 wy-1.2 as filler metal
mm was used.
【００３９】Ｃ．溶接法として、アーク溶接であるＭＩ
Ｇによる自動溶接を採用し、溶接用環状凹所４の全周に
わたって溶接した。なお、通気孔５の開口部の閉塞は、
溶接の最後に行った。C. As a welding method, MI which is arc welding
Automatic welding by G was adopted, and welding was performed over the entire circumference of the annular recess 4 for welding. In addition, the closure of the opening of the ventilation hole 5 is as follows.
It was done at the end of welding.
【００４０】Ｄ．溶接条件は、溶接電流が１６０Ａ、ア
ーク電圧が２１Ｖ、溶接速度が６０ｃｍ／分、シールド
ガス流量が２０リットル／分とした。D. The welding conditions were a welding current of 160 A, an arc voltage of 21 V, a welding speed of 60 cm / min, and a shielding gas flow rate of 20 liter / min.
【００４１】この条件下で製作した各溶接継手につい
て、引張強さおよびＪＩＳ Ｚ３１０５に基づくＸ線透
過試験を行った。その結果を表１に示す。Each welded joint produced under these conditions was subjected to a tensile strength and an X-ray transmission test based on JIS Z3105. Table 1 shows the results.
【００４２】[0042]
【表１】 [Table 1]
【００４３】表１から明らかなように、従来例では、引
張強さが１８６Ｎ／ｍｍ2 で、Ｘ線透過試験もＪＩＳ規
格の４類に留まっているのに対して、実施例１〜３で
は、引張強さが、従来例の１８６Ｎ／ｍｍ2 を大幅に上
回る値となり、Ｘ線透過試験結果もＪＩＳ規格の１類な
いし２類をクリアーできることがわかった。したがっ
て、本発明実施品によれば、突沸現象を抑制して接合強
度の高い良好な溶接継手となし得ることを確認し得た。As is clear from Table 1, in the conventional example, the tensile strength was 186 N / mm 2 and the X-ray transmission test was only Class 4 of the JIS standard. The tensile strength significantly exceeded the value of 186 N / mm 2 of the conventional example, and it was found that the results of the X-ray transmission test could meet the JIS standard class 1 or 2. Therefore, it was confirmed that according to the product of the present invention, the bumping phenomenon was suppressed and a good welded joint having high joining strength could be obtained.
【００４４】[0044]
【発明の効果】以上のように、この発明の溶接継手は、
一端が前記中空部に開口し他端が前記嵌合凹部の開口部
またはその近傍に開口して、前記密閉状の中空部と外部
とを連通するための通気孔が形成されているから、溶接
熱で上記被溶接部材の中空部内の空気が膨張しようとし
ても、通気孔によるガス抜き作用で前記内圧の上昇を抑
制することができ、溶接時の突沸現象を未然に防止する
ことができる。その結果、強度に優れた継手となし得る
とともに、突沸現象を防止するために溶接部を冷却する
必要もないから、溶接作業効率が低下することもない。
また、前記通気孔は、一端が前記中空部に開口し他端が
前記嵌合凹部の先端部またはその近傍に開口しているの
で、両被接合部材の溶接時に同時に通気孔を閉塞でき
る。As described above, the welded joint of the present invention
One end is open to the hollow portion and the other end is open to or near the opening of the fitting concave portion, and a ventilation hole for communicating the sealed hollow portion with the outside is formed. Even if the air in the hollow portion of the member to be welded expands due to heat, the rise in the internal pressure can be suppressed by the gas venting action by the vent hole, and the bumping phenomenon at the time of welding can be prevented beforehand. As a result, a joint having excellent strength can be obtained, and there is no need to cool the welded portion in order to prevent the bumping phenomenon, so that the welding operation efficiency does not decrease.
Further, since the vent hole has one end opened to the hollow portion and the other end opened to the front end portion of the fitting concave portion or in the vicinity thereof, the vent hole can be closed at the same time when the members to be joined are welded.
【００４５】また、この発明の溶接継手の製造方法によ
れば、溶接の最終段階で上記通気孔を溶接で閉塞するの
で、溶接の最後まで通気孔によるガス抜き作用を十分に
発揮させることができるうえ、溶接作業が完了した後に
再度、上記通気孔を塞ぐ仕上げ作業が不要となり、作業
工数の低減化を図ることが可能となる。Further, according to the method of manufacturing a welded joint of the present invention, the vent hole is closed by welding at the final stage of welding, so that the vent hole can sufficiently exert the gas releasing function until the end of welding. In addition, after the welding operation is completed, the finishing operation for closing the air hole is not required again, and the number of operation steps can be reduced.
【図１】この発明の一実施形態に係る溶接継手を示す一
部破断正面図である。FIG. 1 is a partially broken front view showing a welded joint according to an embodiment of the present invention.
【図２】図１のＸーＸ線に沿った横断面図である。FIG. 2 is a cross-sectional view taken along line XX of FIG.
【図３】従来の溶接継手を示す一部破断正面図である。FIG. 3 is a partially broken front view showing a conventional welded joint.
【符号の説明】 １・・・・・・・・・・パイプ（一方の被溶接部材） １Ａ・・・・・・・・・嵌合凹部 １Ｂ・・・・・・・・・密閉状中空部 ２・・・・・・・・・・丸棒（他方の被溶接部材） ２ｂ・・・・・・・・・嵌合凸部 ５・・・・・・・・・・通気孔 Ｍ・・・・・・・・・・溶接部（溶着金属）[Description of Signs] 1 ... Pipe (one welded member) 1A ... Fitting recess 1B ... Sealed hollow Part 2 ················ Round bar (the other member to be welded) 2b ············ Fitting convex part 5 ········· Vent hole M ·・ ・ ・ ・ ・ ・ ・ ・ ・ Welded part (welded metal)
───────────────────────────────────────────────────── フロントページの続き (72)発明者 桜木 秀偉 神奈川県横浜市神奈川区宝町２番地 日産 自動車株式会社内 (72)発明者 加藤 錬太郎 愛知県小牧市大字北外山字哥津3600番地 東海ゴム工業株式会社内 (72)発明者 小川 雄一 愛知県小牧市大字北外山字哥津3600番地 東海ゴム工業株式会社内 (72)発明者 成願 茂利 堺市海山町６丁224番地 昭和アルミニウ ム株式会社内 Ｆターム(参考） 4E081 AA02 BA26 CA08 DA05 DA23 DA27 YC01 YC09 YX02 YX07 YX09 YX20 ──────────────────────────────────────────────────続 き Continuing on the front page (72) Inventor Hidei Sakuragi 2 Takaracho, Kanagawa-ku, Yokohama, Kanagawa Prefecture Inside Nissan Motor Co., Ltd. Rubber Industry Co., Ltd. (72) Inventor Yuichi Ogawa Komaki City, Aichi Prefecture Oita Kita-gaiyama character Gezu 3600 Tokai Rubber Industry Co., Ltd. Company F term (reference) 4E081 AA02 BA26 CA08 DA05 DA23 DA27 YC01 YC09 YX02 YX07 YX09 YX20
Claims (2)
材と、嵌合凸部を有する他方の被溶接部材とが、前記嵌
合凸部が前記嵌合凹部の深さ方向の途中の位置まで嵌入
されることにより、嵌合凹部の後端側に密閉状の中空部
が形成された状態に組み付けられるとともに、前記嵌合
凹部の開口部周縁において、両被溶接部材の外周部が溶
接固定されてなる溶接継手において、 一端が前記中空部に開口し他端が前記嵌合凹部の開口部
またはその近傍に開口して、前記密閉状の中空部と外部
とを連通するための通気孔が形成されていることを特徴
とする溶接継手。1. A member to be welded having a fitting recess with a bottom and another member to be welded having a fitting protrusion, wherein the fitting protrusion is in the middle of the fitting recess in the depth direction. By being fitted to the position of the fitting recess, it is assembled in a state where a closed hollow portion is formed on the rear end side of the fitting recess, and at the periphery of the opening of the fitting recess, the outer peripheral portions of both the welded members are joined. In a welded joint fixed by welding, one end is opened to the hollow portion and the other end is opened to the opening of the fitting concave portion or in the vicinity thereof, so that the closed hollow portion communicates with the outside. A welded joint having pores formed therein.
材と、嵌合凸部を有する他方の被溶接部材とを、前記嵌
合凸部を前記嵌合凹部の深さ方向の途中の位置まで嵌入
することにより、嵌合凹部の後端側に密閉状の中空部が
形成される状態に組み付けるとともに、前記嵌合凹部の
開口部周縁において、両被溶接部材の外周部を溶接固定
するに際し、 一端が前記中空部に開口し他端が前記嵌合凹部の開口部
またはその近傍に開口して、前記密閉状の中空部と外部
とを連通するための通気孔を形成しておき、 溶接時には、その最終段階で、前記通気孔の嵌合凹部側
の開口部を、溶着金属で閉塞することを特徴とする溶接
継手の製造方法。2. A method according to claim 1, wherein the one welded member having the bottomed fitting concave portion and the other welded member having the fitting convex portion are formed by moving the fitting convex portion in the depth direction of the fitting concave portion. To a position where a closed hollow portion is formed at the rear end side of the fitting concave portion, and the outer peripheral portions of both members to be welded are fixed at the periphery of the opening of the fitting concave portion. In doing so, one end is opened in the hollow portion and the other end is opened in or near the opening of the fitting concave portion, and a ventilation hole for communicating the sealed hollow portion with the outside is formed. A method of manufacturing a welded joint, comprising, in a final stage of welding, closing an opening of the ventilation hole on the fitting concave side with a weld metal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP11040043A JP2000237893A (en) | 1999-02-18 | 1999-02-18 | Weld joint and its production method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP11040043A JP2000237893A (en) | 1999-02-18 | 1999-02-18 | Weld joint and its production method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JP2000237893A true JP2000237893A (en) | 2000-09-05 |
Family
ID=12569896
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP11040043A Pending JP2000237893A (en) | 1999-02-18 | 1999-02-18 | Weld joint and its production method |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2000237893A (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2011167746A (en) * | 2010-02-22 | 2011-09-01 | Nissan Motor Co Ltd | Beam-welded member and differential gear equipped with the same |
| JP2011169444A (en) * | 2010-02-22 | 2011-09-01 | Nissan Motor Co Ltd | Beam welding member and differential gear equipped with the same |
| JP2012202509A (en) * | 2011-03-28 | 2012-10-22 | Hitachi Automotive Systems Ltd | Cylinder device |
| CN107104207A (en) * | 2016-02-22 | 2017-08-29 | 宁德新能源科技有限公司 | Secondary cell and its top cover |
| JP2020152135A (en) * | 2019-03-18 | 2020-09-24 | トヨタ紡織株式会社 | Frame for vehicle seat |
| DE102022201298A1 (en) | 2022-02-08 | 2023-08-10 | Mahle International Gmbh | Process for manufacturing a component |
| DE102022203695A1 (en) | 2022-04-12 | 2023-10-12 | Mahle International Gmbh | Method for connecting a first component to a second component using laser welding and shaft arrangement |
-
1999
- 1999-02-18 JP JP11040043A patent/JP2000237893A/en active Pending
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2011167746A (en) * | 2010-02-22 | 2011-09-01 | Nissan Motor Co Ltd | Beam-welded member and differential gear equipped with the same |
| JP2011169444A (en) * | 2010-02-22 | 2011-09-01 | Nissan Motor Co Ltd | Beam welding member and differential gear equipped with the same |
| JP2012202509A (en) * | 2011-03-28 | 2012-10-22 | Hitachi Automotive Systems Ltd | Cylinder device |
| CN107104207A (en) * | 2016-02-22 | 2017-08-29 | 宁德新能源科技有限公司 | Secondary cell and its top cover |
| JP2020152135A (en) * | 2019-03-18 | 2020-09-24 | トヨタ紡織株式会社 | Frame for vehicle seat |
| DE102022201298A1 (en) | 2022-02-08 | 2023-08-10 | Mahle International Gmbh | Process for manufacturing a component |
| DE102022203695A1 (en) | 2022-04-12 | 2023-10-12 | Mahle International Gmbh | Method for connecting a first component to a second component using laser welding and shaft arrangement |
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