JPS6124108B2 - - Google Patents
Info
- Publication number
- JPS6124108B2 JPS6124108B2 JP8271181A JP8271181A JPS6124108B2 JP S6124108 B2 JPS6124108 B2 JP S6124108B2 JP 8271181 A JP8271181 A JP 8271181A JP 8271181 A JP8271181 A JP 8271181A JP S6124108 B2 JPS6124108 B2 JP S6124108B2
- Authority
- JP
- Japan
- Prior art keywords
- welding
- notch
- members
- welded
- back side
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired
Links
- 238000003466 welding Methods 0.000 claims description 72
- 238000000034 method Methods 0.000 claims description 14
- 239000002184 metal Substances 0.000 claims description 10
- 229910052751 metal Inorganic materials 0.000 claims description 10
- 230000035515 penetration Effects 0.000 description 16
- 239000000463 material Substances 0.000 description 7
- 239000011324 bead Substances 0.000 description 3
- 238000002844 melting Methods 0.000 description 3
- 230000008018 melting Effects 0.000 description 3
- 238000012545 processing Methods 0.000 description 3
- 239000010953 base metal Substances 0.000 description 2
- 210000001503 joint Anatomy 0.000 description 2
- 230000002787 reinforcement Effects 0.000 description 2
- 238000012360 testing method Methods 0.000 description 2
- 238000012790 confirmation Methods 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000002950 deficient Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 239000000945 filler Substances 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 239000000155 melt Substances 0.000 description 1
- 238000003908 quality control method Methods 0.000 description 1
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
- B23K33/00—Specially-profiled edge portions of workpieces for making soldering or welding connections; Filling the seams formed thereby
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Butt Welding And Welding Of Specific Article (AREA)
Description
【発明の詳細な説明】
この発明は裏あて金を用い、あるいは用いない
で2部材を突合せ溶接したアーク溶接継手に関す
るものである。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an arc welded joint in which two members are butt welded with or without a backing metal.
アーク溶接は接合すべき金属母材と溶接棒をア
ーク熱によつてともに溶融し、金属母材を接合す
るものであるが、この場合、溶け込み深さ、即ち
母材表面から測定した融合部の深さの適否は溶接
品質の良し悪しを左右する重要な因子である。 In arc welding, the metal base metals to be joined and the welding rod are melted together by arc heat, and the metal base metals are joined together. The suitability of the depth is an important factor that determines the quality of welding.
しかしながら、溶接作業の実際において、この
溶け込み深さが適正量となつているか否かを確認
することは一般に困難なことである。このため、
溶接部位の裏側にも余盛が生ずるように溶接を行
ない、この余盛を目視確認しつつ溶接条件を調節
することが行なわれている。しかし、この場合に
は溶接部分の裏面側まで達した溶融金属が溶接線
において部分的に溶け落ちて孔明きとなる現象も
生じ勝ちで、特に環状部材の全周溶接においては
溶接開始部と終了部とをある程度ラツプさせるこ
とが行なわれるため、このラツプされた部分にお
いて上記溶け落ちが一層生じ易い。 However, in actual welding work, it is generally difficult to confirm whether or not this penetration depth is an appropriate amount. For this reason,
Welding is performed so that a surplus is also generated on the back side of the welded part, and the welding conditions are adjusted while visually checking the surplus. However, in this case, the molten metal that has reached the back side of the welded part is likely to partially melt down at the weld line, creating a hole, especially when welding the entire circumference of an annular member, at the start and end of the weld. Since the parts are wrapped to some extent, the burn-through is more likely to occur in the wrapped parts.
斯る問題を解決するためには、上記ラツプする
部分において溶接条件を切替えて、より緩和され
た条件で溶接することが考えられる。しかし、こ
の場合には斯る条件を切替え制御する装置が必要
となつて溶接装置が複雑となり、設備費、維持費
の増大をもたらす他、それだけ故障率も高い為、
装置稼動率が低下する問題が生じる。 In order to solve this problem, it is conceivable to switch the welding conditions at the lapped portion and perform welding under more relaxed conditions. However, in this case, a device is required to switch and control such conditions, which complicates the welding equipment, resulting in increased equipment and maintenance costs, and the failure rate is correspondingly high.
A problem arises in which the device operating rate decreases.
またこれとは別にパルス電流によつてアーク溶
接を行なう装置を用いれば溶接条件の制御がある
程度容易になるが、この場合においても装置が複
雑、高価となるなど上記装置におけると同様の問
題を生じる。 Separately, controlling the welding conditions can be made easier to some extent by using a device that performs arc welding using pulsed current, but even in this case, the same problems as with the above-mentioned devices arise, such as the device being complicated and expensive. .
更に、母材が所望の値よりも余分の溶け込み深
さで溶融、溶着され易く、そのため溶接電力が余
分に消費されて加工コスト増大の一因となる。 Furthermore, the base material is likely to be melted and welded to a depth greater than the desired value, which consumes additional welding power and becomes a factor in increasing processing costs.
本発明はこのような事情を背景として為された
ものであり、その目的とするところは、最適溶接
条件の設定、制御が容易であるとともに溶接品質
の検査、確認が可能であり、且つ簡単な溶接装置
で実施し得るアーク溶接方法を提供することにあ
る。 The present invention was developed against the background of the above circumstances, and its purpose is to facilitate the setting and control of optimal welding conditions, enable inspection and confirmation of welding quality, and provide a simple method. An object of the present invention is to provide an arc welding method that can be performed using a welding device.
以下、本発明の実施例を図面に基づいて詳しく
説明する。 Hereinafter, embodiments of the present invention will be described in detail based on the drawings.
第1図乃至第4図は本発明の方法でアーク溶接
されたアーク溶接継手を示すもので、同継手にお
いては平板状の第1部材10、同じく平板状且つ
板厚の等しい第2部材12が各一端において突合
され、また略L字状に折れ曲つた第3部材14が
第1,第2部材10,12の突合せ部の裏側に密
着する状態で溶接されている(但し第1図乃至第
4図において溶接部は、溶接手順の説明の便宜
上、溶接前の状態で示されている)。第1部材1
0及び第2部材12は接合すべき端面が表裏両面
に対して直角な面とされ(即ち開先加工されてい
ない)、この端面において密着する状態で突合さ
れている。また第2部材12の突合せ端には、溶
接前の状態において突合せ端面に沿つて延びる浅
い矩形状の切欠16が一定間隔ごとに設けられて
いる。 1 to 4 show an arc welded joint that is arc welded by the method of the present invention, in which a first member 10 is in the form of a flat plate, and a second member 12 is also in the form of a flat plate and has the same thickness. A third member 14 which is abutted at one end and bent into a substantially L-shape is welded in close contact with the back side of the abutting portion of the first and second members 10 and 12 (however, as shown in FIGS. In Figure 4, the welded portion is shown in a state before welding for convenience of explanation of the welding procedure). First member 1
0 and the second member 12 have end surfaces to be joined that are perpendicular to both the front and back surfaces (that is, are not beveled), and are butted in close contact at these end surfaces. Furthermore, shallow rectangular notches 16 are provided at regular intervals in the abutting end of the second member 12, which extends along the abutting end surface in a state before welding.
第1部材10及び第2部材12の裏面側に位置
する第3部材14は、第1部材10と第2部材1
2との突合せ接合部において裏あて金の作用を為
し、また、所定部位で折れ曲つて、この折曲つた
先の板状部分において位置固定の部材に取付け固
定されることによつて第1、第2部材10,12
を保持する部材である。 A third member 14 located on the back side of the first member 10 and the second member 12 is connected to the first member 10 and the second member 1.
It acts as a backing metal at the butt joint with the first part, and is bent at a predetermined part, and the plate-like part at the end of the bend is attached and fixed to a member whose position is fixed. , second members 10, 12
It is a member that holds.
次に上記溶接継手の形成手順を説明する。 Next, the procedure for forming the above-mentioned welded joint will be explained.
まず、第1部材10と第2部材12とが準備さ
れる。第2部材12の端面には一定間隔で切欠1
6が形成され、第2部材12はこの切欠16が形
成された端面において第1部材10と突き合わさ
れる。そして、これらの裏面に第3部材14が密
着させられた状態において、溶接電極棒が第1、
第2部材10,12の表面側(第3図、第4図中
上方側)からこれらの接合線(両部材の境界線)
に沿つて一方の端から他方の端に向けて運棒され
る。この際、溶接棒の運棒速度、溶接電流等の溶
接条件は、切欠16が形成されている部位と形成
されていない部位とにおいて同一とされる。その
結果、第1、第2部材10,12はこれら部材と
電極棒との間に発生するアーク熱によつて溶融
し、電極棒先端の溶融部分或いは他の溶加材とと
もに互に溶け合つて溶着する。このとき、第1、
第2部材10,12の裏側の第3部材にも第1、
第2部材10,12を介してアーク熱が伝達され
る。この熱によつて第3部材14もともに溶融す
るかどうかは、第1、第2部材10,12の板
厚、溶接条件等によつて定まるが、ここでは第3
部材14が接合線直近部において溶融するように
条件が定められる。 First, the first member 10 and the second member 12 are prepared. Notches 1 are formed at regular intervals on the end surface of the second member 12.
6 is formed, and the second member 12 is butted against the first member 10 at the end face where this notch 16 is formed. Then, with the third member 14 in close contact with the back surfaces of these, the welding electrode rod is connected to the first,
From the surface side of the second members 10 and 12 (upper side in FIGS. 3 and 4), these joining lines (boundary line between both members)
A stick is moved along the line from one end to the other. At this time, welding conditions such as the moving speed of the welding rod and the welding current are the same for the region where the notch 16 is formed and the region where the notch 16 is not formed. As a result, the first and second members 10 and 12 are melted by the arc heat generated between these members and the electrode rod, and are melted together with the melted portion of the tip of the electrode rod or other filler material. Weld. At this time, the first
The third member on the back side of the second members 10 and 12 also has a first,
Arc heat is transferred via the second members 10 and 12. Whether or not the third member 14 is also melted by this heat depends on the plate thicknesses of the first and second members 10 and 12, welding conditions, etc.;
Conditions are set so that the member 14 melts in the vicinity of the joining line.
ところで、上記接合線に沿つて所定間隔ごとに
設けられた切欠16の存在する部位においては、
第1、第2部材10,12は前記したのと同様に
アーク熱によつて溶融するとともに、第3部材1
4もこの部分においてはアーク熱を直接的に受け
て加熱されるために溶融量が多く、従つて切欠1
6のない前記部分に比べて溶け込み深さも深くな
る。従つて、溶接条件の選定によつては斯る切欠
16の位置する部位においてのみ第3部材14の
溶け込み深さをその裏面側にまで達するように、
即ちビードが裏側に現われて余盛が生ずるように
することが可能であり、且つ斯る溶接条件の下に
おいて各部材はいずれの部位においても十分な強
度で接合され得る。 By the way, in the region where the notches 16 are provided at predetermined intervals along the joining line,
The first and second members 10 and 12 are melted by arc heat in the same manner as described above, and the third member 1
4 is heated directly by the arc heat in this part, so there is a large amount of melting, and therefore notch 1
The penetration depth is also deeper compared to the part without 6. Therefore, depending on the selection of welding conditions, the penetration depth of the third member 14 can be made to reach the back surface side only in the region where the notch 16 is located.
In other words, it is possible to cause the bead to appear on the back side and to generate extra welding, and under such welding conditions, each member can be joined with sufficient strength at any location.
即ち、第3部材14は切欠16の存在する部位
においては板厚方向全部分に渡つて溶融して第
1、第2部材10,12に溶着されるとともに、
第1、第2部材10,12同士は切欠16によつ
て形成される隙間の存在によつて各端面が板厚方
向全体に渡つて均一且つ十分に溶着されるのであ
り、また切欠16の存在しない部分においても、
切欠16が存在する部位においてその裏側にビー
ドが現われる条件と同じ条件で溶接されゝば、溶
融が第3部材まで十分に進行した状態にある為、
第3部材が確実に所要強度をもつて第1、第2部
材10,12に接合されるのである。 That is, the third member 14 is melted and welded to the first and second members 10 and 12 over the entire thickness direction in the region where the notch 16 is present, and
Due to the existence of the gap formed by the notch 16, the first and second members 10 and 12 are welded uniformly and sufficiently at each end face over the entire thickness direction, and also due to the existence of the notch 16. Even in the parts that do not
If welding is carried out under the same conditions as those under which a bead appears on the back side of the part where the notch 16 is present, the melting has sufficiently progressed to the third member, so
This ensures that the third member is joined to the first and second members 10 and 12 with the required strength.
尚、本実施例においては板厚が比較的薄く、従
つて第1回の運棒によつて溶接作業が終了する場
合を例にとつて説明しているが、板厚が更に厚
く、上記運棒回数、即ちパス回数が複雑である場
合においても上記溶接条件の設定が可能である。 In this example, the case where the plate thickness is relatively thin and the welding work is completed by the first rod operation is explained as an example; however, if the plate thickness is even thicker, Even when the number of rods, that is, the number of passes is complicated, the above welding conditions can be set.
さて、上記した溶接条件は、切欠16が存在す
る部分においては第3部材14の裏側に余盛が生
ずるが、切欠16が存在しない部分においては第
3部材の裏側へ余盛が生じないように、入熱不足
のみならず入熱過剰をも監視しながら設定し制御
し得るため、溶接線の全長にわたつて第1、第2
部材10,12間に一定の隙間を設ける従来の方
法に比較して、溶け落ちを生じないように溶接作
業を行なうことが容易であり、それ故この溶け落
ちに起因する孔あき現象の発生が効果的に回避さ
れらる。また、母材を所望量より余分に溶融させ
ることがない為、溶接電力の消費量も大巾に節減
されて加工コストの低減に寄与する。しかも切欠
16の存在によつて第1、第2部材間に形成され
る隙間は、切欠16の存在しない部分において第
1、第2部材10,12を単純に当接させるだけ
で、精度良く一定に保たれるため、従来のように
隙間を一定に保つための特別な方策を講ずる必要
がない。 Now, the above-mentioned welding conditions are such that excess build-up is generated on the back side of the third member 14 in the part where the notch 16 is present, but excess build-up is not generated on the back side of the third member in the part where the notch 16 is not present. , it is possible to monitor and control not only insufficient heat input but also excessive heat input.
Compared to the conventional method of providing a certain gap between the members 10 and 12, it is easier to perform the welding work without causing burn-through, and therefore, the occurrence of perforation caused by this burn-through is avoided. effectively avoided. Furthermore, since the base material is not melted in excess of the desired amount, the consumption of welding power is greatly reduced, contributing to a reduction in processing costs. Moreover, the gap formed between the first and second members due to the presence of the notch 16 can be maintained accurately and precisely by simply bringing the first and second members 10, 12 into contact in the portion where the notch 16 is not present. Therefore, there is no need to take special measures to keep the gap constant as in the past.
更に第3部材14の裏面側に現われるビードの
目視確認によつて、溶接条件が適正に保持されて
いるか否かを確認しながら作業するこをができ、
或いは母材の融合、溶着が十分になされたか否か
を各継手について個々に確認できる為、不良率を
低下させ得るとともに、品質管理が容易になるの
である。 Furthermore, by visually checking the bead appearing on the back side of the third member 14, it is possible to work while checking whether or not the welding conditions are properly maintained.
Alternatively, since it is possible to individually check for each joint whether or not the base materials have been sufficiently fused and welded, the defective rate can be reduced and quality control can be facilitated.
その上、この継手は溶接時に切欠き16の形成
されていない部位において、第3部材14におけ
る溶け込み深さは裏面側にまで達することがない
から、環状の部材を全周溶接する場合において、
斯る切欠16のない部位を電極棒の運棒の始点と
終点のラツプ部分に選べば、このラツプ部分にお
いても前述した溶け落ちを生ずることなく、従つ
て特に全周溶接の場合において斯る溶け落ち防止
のために必要とされるラツプ部分における溶接条
件切替のための複雑且つ高価な装置が不要とな
る。従つて、また溶接装置の故障も少ないから装
置稼動率も高められて加工コストの低減に寄与す
る。 Furthermore, in this joint, the penetration depth in the third member 14 does not reach the back surface side at the part where the notch 16 is not formed during welding, so when welding the entire circumference of an annular member,
If a portion without such a notch 16 is selected for the lap portion between the start and end points of the electrode rod movement, the above-mentioned burn-through will not occur in this lap portion, and therefore, such melting will not occur, especially in the case of full-circumference welding. There is no need for a complicated and expensive device for switching welding conditions at the lap portion, which is required to prevent falling. Therefore, there are fewer failures of the welding equipment, which increases the equipment operating rate and contributes to reducing processing costs.
第5図乃至第7図は上記態様の継手の実用性を
試すために行なつた実験を示すものである。第5
図において、円環状の第1部材(板厚2.0mm)1
8と、同じく円環状を成し且つ板厚が僅かに薄い
第2部材(板厚1.5mm)20とが各一端面におい
て突合されるとともに、断面がL字形を成す第3
部材(板厚1.5mm)22が第1、第2部材18,
20の内側に裏あてされた状態で溶接されてお
り、またその溶接の手順は前述したのと同様の手
順に従つている。尚、第2部材20には溶接前の
状態において第6図に示すような台形状の切欠2
4が一定間隔毎に且つ4個所設けられている。 FIGS. 5 to 7 show experiments conducted to test the practicality of the joint of the above embodiment. Fifth
In the figure, an annular first member (plate thickness 2.0 mm) 1
8 and a second member 20 (plate thickness 1.5 mm) which is also annular and has a slightly thinner plate are abutted on each end surface, and a third member having an L-shaped cross section is abutted against each other at one end surface.
The member (plate thickness 1.5 mm) 22 is the first member, the second member 18,
20, and the welding procedure is the same as that described above. Note that the second member 20 has a trapezoidal notch 2 as shown in FIG. 6 before welding.
4 are provided at four locations at regular intervals.
第7図は上記のようにして形成された継手にお
ける第3部材22の溶け込み深さを、切欠の設け
られていない部材についてパルス溶接装置や溶接
条件を切替える切替制御付の溶接装置を用いて溶
接した場合との比較において示したものである。
図中縦軸は第3部材22における溶け込み深さ
(第5図中h)を示し、またA,B,C,Dは下
記各溶接条件における溶け込み深さを測定値の巾
及び平均値(黒丸で示されている)で示したもの
である。このうちAはパルスMIG溶接装置を用い
た場合、Bは切替制御装置付のMIG溶接装置を用
いた場合、Cは切欠24における寸法が第6図中
aが13mm、bが15mm、tが1.0mmの場合、Dは
a,bの値が同じで切欠深さtが1.5mmの場合を
夫々示している。但しCについては切欠24の位
置する部位の溶け込み深さのみが、Dについては
切欠24の位置する部位(図中D―ロで示され
る)、位置しない部位(図中D―イで示される)
の夫々の溶け込み深さが示されている。また、B
については、前述した溶け落ち防止のために溶接
条件をある程度弱くせざるを得ないことから溶接
強度確保のため接合部全周に前工程としての
TFG溶接を施した場合の結果を示すものであ
る。 FIG. 7 shows the penetration depth of the third member 22 in the joint formed as described above by welding a member without a notch using a pulse welding device or a welding device with switching control for switching the welding conditions. This is shown in comparison with the case where
The vertical axis in the figure shows the penetration depth (h in Fig. 5) in the third member 22, and A, B, C, and D indicate the penetration depth under each welding condition below, the width of the measured value and the average value (black circle ). Among these, A is when a pulse MIG welding device is used, B is when a MIG welding device with a switching control device is used, and C is a case where the dimensions at the notch 24 are 13 mm for a, 15 mm for b, and 1.0 mm for t in Fig. 6. In the case of mm, D indicates the case where the values of a and b are the same and the notch depth t is 1.5 mm. However, for C, only the penetration depth of the part where the notch 24 is located, and for D, the part where the notch 24 is located (indicated by D-B in the figure), and the part where it is not located (indicated by D-A in the figure).
The penetration depth of each is shown. Also, B
In order to prevent the burn-through mentioned above, welding conditions have to be weakened to some extent, so in order to ensure welding strength, welding is carried out around the entire circumference of the joint as a pre-process.
This shows the results when TFG welding is applied.
第7図から、第2部材20に切欠24を設け、
この切欠24の存在する部位の裏側に余盛が生ず
るように溶接した継手について、第3部材22の
切欠24の存在しない部分においてもその溶け込
み深さ(第7図中D―イ)が切替制御装置付溶接
装置を用いた設合の値Bと同等の水準に達してい
ることが理解されるのである。 From FIG. 7, a notch 24 is provided in the second member 20,
Regarding the joint welded so that excess buildup is generated on the back side of the part where the notch 24 exists, the penetration depth (D-A in Fig. 7) is controlled by switching even in the part of the third member 22 where the notch 24 does not exist. It is understood that this value has reached the same level as the value B of the installation using a welding device with an attached welding device.
尚、第7図中のD―ロにおいて、溶け込み深さ
1.5mmの線から上方に出た部分は、裏側に生じた
余盛の厚さに相当し、同図中Cの値から、切欠深
さtが浅い場合には、同じ溶接条件で余盛が生じ
ないことがわかる。即ち、切欠24の形状、寸法
等は溶接条件との関係において、或いは母材の板
厚、開先加工の有無、開先形状、要求される溶接
品質等との関係において適宜選ばれるべきもので
ある。従つて、斯る切欠は上記形状のものの他
種々の態様のものが可能である。第8図、第9図
はその具体的な例を示したもので、このうち第8
図中Eは矩形の角部に丸味をつけたもの、Fは略
半だ円状のもの、Gは3角形状のものを示してい
る。また第9図は、開先形状がレ形となるように
突合せ端が加工された第2部材26に矩形状の切
欠28を設けた例を示したものである。尚、同図
中30は第2部材26に突合され第1部材、32
は裏あて金である。 In addition, in D-RO in Fig. 7, the penetration depth
The part extending upward from the 1.5 mm line corresponds to the thickness of the extra layer formed on the back side, and from the value of C in the same figure, if the notch depth t is shallow, the extra layer will be thicker under the same welding conditions. It turns out that this does not occur. In other words, the shape, dimensions, etc. of the notch 24 should be selected appropriately in relation to the welding conditions, the thickness of the base material, the presence or absence of beveling, the shape of the bevel, the required welding quality, etc. be. Therefore, such a notch can have various shapes other than the shape described above. Figures 8 and 9 show specific examples.
In the figure, E indicates a rectangular shape with rounded corners, F indicates a substantially semi-elliptical shape, and G indicates a triangular shape. Further, FIG. 9 shows an example in which a rectangular notch 28 is provided in the second member 26 whose abutting ends are processed so that the groove shape is in a V-shape. In addition, in the figure, 30 is abutted against the second member 26, and the first member 32
is the backing money.
更に、斯る切欠はその個数も場合によつて1個
で足りることもあり、また突合せ溶接すべき一対
の部材のいずれの側に設けても良い。またこれら
両部材の裏側に配置される裏あて金を省略して、
一対の部材を突合せ溶接する突合せ継手に本発明
を適用することも可能である。 Furthermore, the number of such notches may be one depending on the case, and they may be provided on either side of a pair of members to be butt welded. Also, the backing metal placed on the back side of both these parts is omitted,
It is also possible to apply the present invention to a butt joint in which a pair of members are butt welded.
以上詳記したように、本発明に係るアーク溶接
方法は、突合わせ溶接すべき2部材の一方の突合
わせ端面に少なくとも1個の切欠を形成し、裏あ
て金を用い、あるいは用いないでそれら2部材を
突き合わせ、切欠に存在する部位と存在しない部
位とにおいて同一で、かつ、切欠の存在する部位
では裏面に余盛が生ずる一方、切欠の存在しない
部位では裏面に余盛が生じない溶接条件でアーク
溶接を行うことを特徴とするものである。 As described in detail above, the arc welding method according to the present invention involves forming at least one notch in one butt end face of two members to be butt welded, and welding them with or without a backing metal. Welding conditions in which two members are butted together, the part where there is a notch and the part where there is no notch are the same, and where the part where the notch exists, there is excess buildup on the back side, but where there is no notch, there is no extra buildup on the back side. This method is characterized by arc welding.
このようにすれば、切欠が存在する部分におい
て裏側に余盛が表われることによつて溶け込み深
さが十分であることを確認し得る一方、切欠が存
在しない部分においては裏側に余盛が表われない
ことによつて溶け込み深さが過大でないことを確
認し得るのであり、これによつて溶接条件を不足
でも過剰でもない適正範囲に設定し得る。 In this way, it is possible to confirm that the penetration depth is sufficient by showing the reinforcement on the back side in the part where the notch exists, while the reinforcement is visible on the back side in the part where the notch does not exist. By checking that the penetration depth is not excessive, it is possible to confirm that the penetration depth is not excessive, and thereby the welding conditions can be set within an appropriate range that is neither insufficient nor excessive.
従つて、各接合母材は十分な溶け込み深さで溶
接されるとともに、各継手について容易且つ簡単
な検査が可能となり、溶接時の溶け落ち、孔あき
現象の発生などが防止されて製品品質が向上せし
められるとともに、無駄な電力消費が回避され、
溶接装置も簡単なもので足りるなど種々優れた効
果が生ずる。 Therefore, each joint base material is welded with sufficient penetration depth, and each joint can be easily and easily inspected, preventing burn-through and perforation during welding, and improving product quality. At the same time, wasteful power consumption is avoided.
Various excellent effects are produced, such as requiring only a simple welding device.
第1図、第2図は夫々本発明のアーク溶接方法
によつて形成された溶接継手の斜視図、平面図で
ある。第3図は第2図における―断面図であ
る。第4図は第2図における―断面図でる。
第5図は本発明のアーク溶接方法の実用性を試験
するために試作された継手の断面図である。第6
図は第5図における第2部材の溶接前の状態の要
部平面図である。第7図は第5図における第3部
材の溶け込み深さを示す図である。第8図E乃至
G及び第9図は夫々本発明の方法の実施に当つて
接合金属母材に設けられる切欠の他の態様を示す
平面図及び斜視図である。
10,18,30:第1部材、12,20,2
6:第2部材、14,22:第3部材、16,2
4,28:切欠、32:裏あて金。
1 and 2 are a perspective view and a plan view, respectively, of a welded joint formed by the arc welding method of the present invention. FIG. 3 is a cross-sectional view of FIG. 2. FIG. 4 is a sectional view of FIG. 2.
FIG. 5 is a sectional view of a joint manufactured as a prototype to test the practicality of the arc welding method of the present invention. 6th
This figure is a plan view of the main part of the second member in FIG. 5 in a state before welding. FIG. 7 is a diagram showing the penetration depth of the third member in FIG. 5. FIGS. 8E to 8G and FIG. 9 are a plan view and a perspective view, respectively, showing other embodiments of the notch provided in the joining metal base material in carrying out the method of the present invention. 10, 18, 30: first member, 12, 20, 2
6: Second member, 14, 22: Third member, 16, 2
4, 28: Notch, 32: Backing metal.
Claims (1)
て、それら2部材の一方の突合わせ端面に少なく
とも1個の切欠を形成し、裏あて金を用い、ある
いは用いないでそれら2部材を突き合わせ、前記
切欠の存在する部位と存在しない部位とにおいて
同一で、かつ、切欠の存在する部位では裏面に余
盛が生ずる一方、切欠の存在しない部位では裏面
に余盛が生じない溶接条件でアーク溶接を行うこ
とを特徴とするアーク溶接方法。1. A method of butting and welding two members, in which at least one notch is formed in one butt end surface of the two members, the two members are butted together with or without a backing metal, and the notch is welded by butting the two members together. Perform arc welding under welding conditions that are the same in areas where there is and where there is not, and where excess build-up occurs on the back surface in areas where there is a notch, but no excess build-up occurs on the back surface in areas where there is no notch. An arc welding method characterized by:
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP8271181A JPS57199590A (en) | 1981-05-30 | 1981-05-30 | Arc welding joint |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP8271181A JPS57199590A (en) | 1981-05-30 | 1981-05-30 | Arc welding joint |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS57199590A JPS57199590A (en) | 1982-12-07 |
JPS6124108B2 true JPS6124108B2 (en) | 1986-06-09 |
Family
ID=13781985
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP8271181A Granted JPS57199590A (en) | 1981-05-30 | 1981-05-30 | Arc welding joint |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS57199590A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS6316909A (en) * | 1986-07-04 | 1988-01-23 | Tomoegumi Iron Works Ltd | Multi-spindle boring device for web of h-section steel |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE19538595A1 (en) * | 1995-10-17 | 1997-04-24 | Thyssen Industrie | Motor vehicle door or flap |
JP4438691B2 (en) * | 2004-06-11 | 2010-03-24 | 株式会社神戸製鋼所 | Dissimilar material joint and weld joint method in which iron material and aluminum material are joined |
JP4933923B2 (en) * | 2007-03-15 | 2012-05-16 | 株式会社神戸製鋼所 | Dissimilar material joining method |
-
1981
- 1981-05-30 JP JP8271181A patent/JPS57199590A/en active Granted
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS6316909A (en) * | 1986-07-04 | 1988-01-23 | Tomoegumi Iron Works Ltd | Multi-spindle boring device for web of h-section steel |
Also Published As
Publication number | Publication date |
---|---|
JPS57199590A (en) | 1982-12-07 |
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