JPS63248570A - Gas welding method and equipment therefor - Google Patents
Gas welding method and equipment thereforInfo
- Publication number
- JPS63248570A JPS63248570A JP7931287A JP7931287A JPS63248570A JP S63248570 A JPS63248570 A JP S63248570A JP 7931287 A JP7931287 A JP 7931287A JP 7931287 A JP7931287 A JP 7931287A JP S63248570 A JPS63248570 A JP S63248570A
- Authority
- JP
- Japan
- Prior art keywords
- welded
- gas
- welding
- mixed gas
- zone
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 238000003466 welding Methods 0.000 title claims abstract description 57
- 238000000034 method Methods 0.000 title claims description 11
- 239000007789 gas Substances 0.000 claims description 69
- 239000002737 fuel gas Substances 0.000 claims description 9
- 230000001590 oxidative effect Effects 0.000 claims description 4
- 238000005507 spraying Methods 0.000 claims description 4
- 238000002485 combustion reaction Methods 0.000 claims description 3
- 239000012535 impurity Substances 0.000 abstract description 6
- 230000003647 oxidation Effects 0.000 abstract description 5
- 238000007254 oxidation reaction Methods 0.000 abstract description 5
- 238000010438 heat treatment Methods 0.000 abstract description 4
- 238000007664 blowing Methods 0.000 abstract description 2
- 230000035515 penetration Effects 0.000 abstract 1
- 230000002093 peripheral effect Effects 0.000 abstract 1
- 230000003014 reinforcing effect Effects 0.000 description 10
- HSFWRNGVRCDJHI-UHFFFAOYSA-N alpha-acetylene Natural products C#C HSFWRNGVRCDJHI-UHFFFAOYSA-N 0.000 description 4
- 125000002534 ethynyl group Chemical group [H]C#C* 0.000 description 4
- CSCPPACGZOOCGX-UHFFFAOYSA-N Acetone Chemical compound CC(C)=O CSCPPACGZOOCGX-UHFFFAOYSA-N 0.000 description 2
- MYMOFIZGZYHOMD-UHFFFAOYSA-N Dioxygen Chemical compound O=O MYMOFIZGZYHOMD-UHFFFAOYSA-N 0.000 description 2
- LNSPFAOULBTYBI-UHFFFAOYSA-N [O].C#C Chemical group [O].C#C LNSPFAOULBTYBI-UHFFFAOYSA-N 0.000 description 2
- 229910001882 dioxygen Inorganic materials 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 229910001294 Reinforcing steel Inorganic materials 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 239000010410 layer Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
- 239000002344 surface layer Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Abstract
Description
【発明の詳細な説明】
イ、産業上の利用分野
本発明は、ガス溶接方法及びその装置に関し、特に、酸
素−アセチレンガスを用いるガス溶接（又は圧接）工法
及びこの工法に使用するガス溶接装置に関する。DETAILED DESCRIPTION OF THE INVENTION A. Field of Industrial Application The present invention relates to a gas welding method and an apparatus therefor, and in particular to a gas welding (or pressure welding) method using oxygen-acetylene gas and a gas welding apparatus used in this method. Regarding.
口、従来技術
この種のガス溶接方法においては、溶接されるべき一対
の鉄筋等の対象物を互いに接合させ、この接合部（被溶
接部）の周囲にアセチレンと酸素との混合ガス噴出用の
ノズルを配し、このノズルから上記混合ガスを被溶接部
に吹付けることが一般に行われている。Prior Art In this type of gas welding method, objects such as a pair of reinforcing bars to be welded are joined together, and a gas mixture of acetylene and oxygen is ejected around the joint (part to be welded). Generally, a nozzle is provided and the mixed gas is sprayed onto the welded part from this nozzle.
第１５図及び第１６図は上記の溶接に用いられるガス溶
接装置のノズル及びその周辺の部分平面図で、吹管６６
の先端から左右に分岐する分岐管７１．７２又は８１．
８２にはノズル７３が中心Ｑに向けて複数個対称に配置
され、ノズル７３から混合ガスを吹出して図示しない被
溶接部を加熱するようにしている。FIGS. 15 and 16 are partial plan views of the nozzle and its surroundings of the gas welding device used for the above welding, with the blowpipe 66
A branch pipe 71.72 or 81. branches left and right from the tip of the pipe.
In 82, a plurality of nozzles 73 are arranged symmetrically toward the center Q, and a mixed gas is blown out from the nozzles 73 to heat a welded part (not shown).
第１７図は第１５図又は第１６図のガス溶接装置を使用
して一対の鉄筋を突き合わせて溶接する方法を示す。鉄
筋１９ａ、１９ｂの突き合わせ部には７字形の切欠き３
３を形成しておいて、図示しない油圧装置によって鉄筋
１９ａ、１９ｂを矢印Ｐ、Ｐのように互いに押圧しなが
らノズル７３からの混合ガスの火焔３２を突き合わせ部
に向けて噴出し、この突き合わせ部で鉄筋１９ａ、１９
ｂを互いに溶接する。切欠き、３３は、鉄筋１９ａ、１
９ｂの表面層だけでなく、これらの中心部迄も確実に溶
接されるように設けたものである。FIG. 17 shows a method of butting and welding a pair of reinforcing bars using the gas welding apparatus shown in FIG. 15 or 16. There is a figure 7 notch 3 at the butt part of the reinforcing bars 19a and 19b.
3 is formed, and while pressing the reinforcing bars 19a and 19b against each other as shown by arrows P and P using a hydraulic device (not shown), a mixed gas flame 32 from the nozzle 73 is ejected toward the abutting portion. reinforcing bars 19a, 19
Weld b together. The notch 33 is the reinforcing bar 19a, 1
This is to ensure that not only the surface layer 9b but also the center of the layer 9b is welded.
上記のように押圧力Ｐ、Ｐを掛けながら溶接するガス溶
接にあっては、鉄筋１９ａ、１９ｂの突き合わせ部から
これらの軸方向に左右に火焔焦点を移動させながら溶接
を行う。この移動距離βは、例えば径２５ｍｍ以下の鉄
筋に対しては３〜５Ｈ程度である。In gas welding in which welding is performed while applying pressing forces P and P as described above, welding is performed while moving the flame focus left and right in the axial direction from the butt part of the reinforcing bars 19a and 19b. This moving distance β is, for example, about 3 to 5H for reinforcing bars with a diameter of 25 mm or less.
被溶接部の加熱温度を高くし過ぎると、上記の火焔焦点
移動時に被溶接部の酸化が進行し、また燃料のアセチレ
ンガスから水やアセトン等の不純物が発生し、これらが
被溶接部に取り込まれて溶接された個所が脆くなり、甚
だ不都合である。前記のように火焔焦点を左右に移動さ
せながら溶接を行うのは、このような不純物の被溶接部
への侵入を防止するためである。If the heating temperature of the part to be welded is too high, oxidation of the part to be welded will progress when the flame focus moves as described above, and impurities such as water and acetone will be generated from the acetylene gas of the fuel, and these will be taken into the part to be welded. The welded parts become brittle, which is extremely inconvenient. The reason why welding is performed while moving the flame focus from side to side as described above is to prevent such impurities from entering the welded part.
溶接後は、第１８図に示すように、溶接個所には押圧力
Ｐ、Ｐによって環状の突起（Ｍと呼ばれる）３５が形成
されるのであるが、作業者の心理として、確実な溶接を
行おうとして環状突起３５が形成される迄被溶接部に火
焔を集中させ、環状突起３５が形成されてから火焔焦点
を左右に移動させるような作業になり勝ちである。この
ような作業では、被溶接部の温度が昇り過ぎて前述した
不純物の被溶接部への侵入や被溶接部の酸化が起こり、
溶接個所の強度が却って低下してしまう。After welding, as shown in Fig. 18, an annular protrusion (called M) 35 is formed at the welding point due to the pressing forces P and P. However, the worker's psychology is to ensure that the welding is carried out reliably. This tends to result in work in which the flame is concentrated on the part to be welded until the annular protrusion 35 is formed, and then the flame focus is moved from side to side after the annular protrusion 35 is formed. In such work, the temperature of the welded part rises too much, causing the aforementioned impurities to enter the welded part and oxidation of the welded part.
The strength of the welded area will actually decrease.
その他、鉄筋の溶接は、屋外で行われることが多く、そ
の上、高所や強風下で行われることも屡々あり、前述の
火焔焦点の移動は手作業によっているので特に上記のよ
うな作業環境が良好でない場合は、溶接個所の強度が信
頼性に欠ける。例えば、被溶接部を中心にして環状突起
３５が形成さく３）
れるべきであるが、ときとして第１８図に破線で示す被
溶接部２０から偏倚して環状突起３５が形成されること
がある（片炙りと呼ばれる）。このような溶接では、溶
接個所の強度が不十分であることは言うまでもない。In addition, reinforcing steel welding is often carried out outdoors, and often at high places or under strong winds, and the above-mentioned movement of the flame focus is done by hand, so it is especially difficult to weld in the above-mentioned work environment. If the welding area is not good, the strength of the welded area is unreliable. For example, an annular protrusion 35 should be formed centered on the welded part 3), but sometimes the annular protrusion 35 is formed off-centered from the welded part 20, which is shown by the broken line in FIG. (It's called kataburi). Needless to say, in such welding, the strength of the welded portion is insufficient.
ハ０発明の目的
本発明は、上記の事情に鑑みてなされたものであって、
燃料ガスから発生する不純物が被溶接部に侵入すること
がなく被溶接部の酸化も進行せず、作業環境が変化して
も再現性が高く、確実な溶接を高い信頼性を以て遂行で
きるガス溶接方法及びこの方法に使用するガス溶接装置
を提供することを目的としている。Purpose of the Invention The present invention has been made in view of the above circumstances, and includes:
Gas welding does not allow impurities generated from fuel gas to enter the welded part, does not cause oxidation of the welded part, has high reproducibility even when the working environment changes, and can perform reliable welding with high reliability. The object is to provide a method and a gas welding device for use in the method.
二０発明の構成
本発明の第一の発明は、ガス溶接されるべき対象物に燃
料ガスと酸化性ガスとの混合ガスを吹付けて溶接を行う
に際し、前記対象物の被溶接部の両側に前記混合ガスを
同時に吹付け、この混合ガス中の燃料ガスの燃焼熱によ
って前記対象物を溶接するガス溶接方法に係る。20 Structure of the Invention The first aspect of the present invention provides that when performing welding by spraying a mixed gas of fuel gas and oxidizing gas onto an object to be gas welded, both sides of the welded part of the object are The present invention relates to a gas welding method in which the mixed gas is simultaneously sprayed on the gas mixture and the object is welded by the combustion heat of the fuel gas in the mixed gas.
性ガスとの混合ガスを噴出せしめる噴出口を有し、この
噴出口からの前記混合ガス中の燃料ガスの燃焼熱によっ
て前記対象物を溶接するように構成されたガス溶接装置
において、前記被溶接部の一方の側に前記混合ガスを噴
出する第一の噴出口と、前記被溶接部の他方の側に前記
混合ガスを噴出する第二の噴出口とが共に配置されてい
ることを特徴とするガス溶接装置に係る。In the gas welding apparatus, the apparatus is configured to have an ejection port that ejects a mixed gas with a oxidizing gas, and to weld the object using the combustion heat of the fuel gas in the mixed gas emitted from the ejection port. A first ejection port for ejecting the mixed gas on one side of the part and a second ejection port for ejecting the mixed gas on the other side of the welded part are both arranged. related to gas welding equipment.
ホ、実施例 以下、本発明の詳細な説明する。E, Example The present invention will be explained in detail below.
まず第１図について、本例によるガス溶接装置の全体的
構成を説明する。この装置は吹管部１とノズル部（又は
バーナ一部）２とがらなり、吹管部１の先端には酸素ガ
ス導入管３とアセチレンガス導入管４とが設けられ、こ
れらの導入管からの各ガスが把持部７を経由して合流管
部５にて互いに混合されて吹賢６からノズル部２へ導か
れる。First, with reference to FIG. 1, the overall configuration of the gas welding apparatus according to this example will be explained. This device consists of a blowpipe part 1 and a nozzle part (or part of the burner) 2, and an oxygen gas introduction pipe 3 and an acetylene gas introduction pipe 4 are provided at the tip of the blowpipe part 1, and each gas from these introduction pipes is are mixed with each other at the merging pipe section 5 via the grip section 7 and guided from the blowing head 6 to the nozzle section 2.
、おな、図中の８はアセチレンガスの調節バルブ（ナツ
ト）、９は酸素ガスの調節バルブ（ナンド）、１０は酸
素−アセチレン混合ガスの調節バルブ（ナンド）であっ
て、いずれも公知のねじ込み式バルブとして構成されて
いる。混合ガス用の吹管６は更に、ノズル部２のＵ字状
分岐管１１．１２に夫々分岐され、各分岐管と一体のノ
ズル１３及び１４並びに１５及び１６に夫々連通せしめ
られている。In addition, in the figure, 8 is an acetylene gas control valve (NAND), 9 is an oxygen gas control valve (NAND), and 10 is an oxygen-acetylene mixed gas control valve (NAND), all of which are known. Configured as a screw-in valve. The mixed gas blowpipe 6 is further branched into U-shaped branch pipes 11, 12 of the nozzle section 2, and communicated with nozzles 13 and 14 and 15 and 16, which are integrated with each branch pipe.
ここで、ノズル部２は第２図〜第４図の如くに構成され
ていることが重要である。まず、各ノズル１３〜１６は
溶接されるべき対象物１９（例えば鉄筋）の被溶接部２
０に対し、その径方向に放射状に対称配置されていて、
各先端には被溶接部２０の円周方向に沿う混合ガス噴出
口２１及び２２が夫々図に於いて上下に形成されている
。これらの各噴出口からの混合ガス２９は被溶接部２０
に対し８箇所に均等に吹付けられ、従ってガス炎による
加熱は一様に行うことができる。なお、ガス溶接に際し
ては、各ノズル１３〜１６の中心軸の交点Ｑに対象物１
９の中心が位置するように各ノズルが配設され、またそ
の中心よりの垂線と上記吹管６の延長線とが互いに直交
して交わる如くにことを確保できるからである。上記ノ
ズル配置に加えて注目すべき構成は、上記の混合ガスが
互いに１８０度の角度で対向したノズル１３と１６及び
１４と１５内をその先端にまで導かれ、各ノズルの一方
の噴出口２１は被溶接部２０の図に於いて上方の側に、
他方の噴出口２２は被溶接部２０の図に於いて下方の側
に夫々混合ガス２９を吹付けるように配されていること
である。ノズル１３〜１６の拡大部分断面図である第３
図及びノズル１３〜１６の先端側から見た拡大正面図で
ある第４図には、上記の各噴出口が更に詳細に示されて
いる。Here, it is important that the nozzle section 2 is constructed as shown in FIGS. 2 to 4. First, each nozzle 13 to 16 is connected to a welded part 2 of an object 19 (for example, a reinforcing bar) to be welded.
0, arranged radially symmetrically in its radial direction,
At each tip, mixed gas jet ports 21 and 22 are formed along the circumferential direction of the part to be welded 20, upper and lower in the figure, respectively. The mixed gas 29 from each of these jet ports is applied to the part to be welded 20.
The gas flame is sprayed evenly at 8 locations, so heating by the gas flame can be uniformly performed. In addition, when gas welding, the object 1 is placed at the intersection Q of the central axes of each nozzle 13 to 16.
This is because each nozzle is arranged so that the center of the nozzle 9 is located, and it is possible to ensure that the perpendicular line from the center and the extension line of the blowpipe 6 intersect at right angles to each other. In addition to the above-mentioned nozzle arrangement, a notable configuration is that the above-mentioned mixed gas is guided through nozzles 13 and 16 and 14 and 15 that face each other at an angle of 180 degrees to their tips, is on the upper side in the figure of the part to be welded 20,
The other outlet 22 is arranged so as to spray a mixed gas 29 on the lower side of the welded part 20 in the drawing. A third enlarged partial sectional view of the nozzles 13 to 16.
4, which is an enlarged front view of the nozzles 13 to 16 viewed from the tip side, each of the above-mentioned jet ports is shown in more detail.
次に、上記の如くに構成されたガス溶接（又は圧接）装
置を用いて溶接を行う方法を説明する。Next, a method of welding using the gas welding (or pressure welding) apparatus configured as described above will be described.
まず第５図に示すように、互いに溶接されるべ１１５度
の曲げ角度で亀裂の発生は認められなかった。First, as shown in FIG. 5, no cracks were observed at the bending angle of 115 degrees when welding together.
第８図及び第９図は、前述のノズル構造の変形例を示す
ものである。FIGS. 8 and 9 show modifications of the above-described nozzle structure.
これらの例では、一方の噴出口２１と他方の噴出口２２
とを２組（ノズル４３）又は３組（ノズル４４）設けて
いて、溶接しようとする対象物の径が大きくなるに従っ
て噴出口の数を増加し、効率良く溶接を行うようにして
いる。例えば第９図のノズル４４は、径５１ｍｍ程度の
鉄筋を溶接可能である。In these examples, one spout 21 and the other spout 22
Two sets (nozzles 43) or three sets (nozzles 44) are provided, and as the diameter of the object to be welded increases, the number of ejection ports is increased to perform welding efficiently. For example, the nozzle 44 shown in FIG. 9 is capable of welding reinforcing bars with a diameter of about 51 mm.
第１０図及び第１１図は、分岐管４１．４２をリング状
にし、ノズルを設けずに分岐管４１．４２に直接対の噴
出口５１．５２を多数設けた例を示す。第１０図は平面
図、第１１図は第１０図のｘｔ−ｘｒ 線矢視拡大断
面図である。FIGS. 10 and 11 show an example in which the branch pipe 41.42 is formed into a ring shape, and a large number of direct pairs of jet ports 51.52 are provided in the branch pipe 41.42 without providing any nozzles. 10 is a plan view, and FIG. 11 is an enlarged sectional view taken along the line xt-xr in FIG. 10.
リング状分岐管４１．４２の内周側側壁に貫通孔を２列
に多数設けて噴出口５１．５２を形成し、噴出口５１．
５２はリング状分岐管４１．４２の中心線Ｑに向かうよ
うにしである。また、第１１図に示すように、一方の噴
出口５１は仮想線で示す被溶接部２０の上方側に、他方
の噴出口５２は被溶接部２０の下方側に向けである。こ
のように噴出口５１．５２を所定の方向に向けるように
するには、分岐管４１．４２の肉厚は、これらの方向を
決めるに十分な厚さを要する。A large number of through holes are provided in two rows on the inner circumferential side wall of the ring-shaped branch pipe 41.42 to form jet ports 51.52.
52 is directed toward the center line Q of the ring-shaped branch pipes 41 and 42. Further, as shown in FIG. 11, one of the jet ports 51 is directed above the part to be welded 20 shown by the imaginary line, and the other jet port 52 is directed to the bottom side of the part to be welded 20. In order to orient the jet ports 51, 52 in predetermined directions in this manner, the wall thickness of the branch pipes 41, 42 must be thick enough to determine these directions.
噴出口５１．５２を上記のように多数設けることにより
、一層大径の対象物の溶接を容易に行うことができる。By providing a large number of jet ports 51, 52 as described above, it is possible to easily weld objects with a larger diameter.
また、第１２図に示すように、分岐管４１．４２に噴出
口５１．５２を１列に多数設け、上方に向けた噴出口５
１と下方に向けた噴出口５２とを交互に配することもで
きる。Further, as shown in FIG. 12, a large number of jet ports 51,52 are provided in one row in the branch pipe 41,42, and the jet ports 5 are directed upward.
1 and the downwardly directed jet ports 52 may be arranged alternately.
第１３図は、ノズルの噴出口２１．２２の両側にこれら
の火焔焦点に合うような補助の噴出口２３．２４を設け
た例を示す。FIG. 13 shows an example in which auxiliary jet ports 23, 24 are provided on both sides of the jet ports 21, 22 of the nozzle to match the focal point of these flames.
ノズル４５をこのように構成することにより、溶接すべ
き対象物の加熱効率を高めることができる。By configuring the nozzle 45 in this way, the heating efficiency of the object to be welded can be increased.
第１４図は、更に別の実施例を示すものであって、前述
した実施例とは、把持部１７の部分を吹管６と同一方向
に設けている（即ち屈曲せしめていない）点が異なって
いる。この直線形状の溶接装置は、使用する場所等に応
じ適宜選択して使用すればよい。FIG. 14 shows yet another embodiment, which differs from the previously described embodiment in that the grip portion 17 is provided in the same direction as the blowpipe 6 (that is, it is not bent). There is. This linear welding device may be appropriately selected and used depending on the place where it is used.
以上、本考案を例示したが、上述の例は本発明の技術的
思想に基づいて更に変形が可能である。Although the present invention has been illustrated above, the above-mentioned example can be further modified based on the technical idea of the present invention.
使用するガスの種類もガス溶接又は圧接に使用可能なも
のであれば、上記したものに限られることはない。The type of gas used is not limited to those mentioned above as long as it can be used for gas welding or pressure welding.
へ０発明の詳細
な説明したように、本発明は、ＰＪｊ！溶接部の一方の
側に第一の混合ガス噴出口を、他方の側に第吹付けて溶
接を行うように構成しているので、混合ガスの火焔が被
溶接部には吹付けられず、被溶接部が過度に加熱される
ことがないので被溶接部の酸化が進行しない。また、燃
料ガスから生成する不純物が溶接個所に含有されること
もない。その上、溶接に際してガス溶接装置を移動させ
ずに所定位置で溶接を行えるので、被溶接部を正確に溶
接できる。その結果、溶接個所は欠陥のない健全なもの
となって十分な強度が保証され、信頼性も高い。また、
溶接中にガス溶接装置を移動させる必要がないので、作
業環境に関係なく確実な溶接が遂行される。DETAILED DESCRIPTION OF THE INVENTION As described above, the present invention provides PJj! Since welding is performed by having the first mixed gas jet on one side of the welding part and the second spraying on the other side, the flame of the mixed gas is not sprayed onto the welded part. Since the part to be welded is not heated excessively, oxidation of the part to be welded does not proceed. Further, impurities generated from the fuel gas are not contained in the welding area. Furthermore, since welding can be performed at a predetermined position without moving the gas welding device, the parts to be welded can be accurately welded. As a result, the welded parts are defect-free and sound, ensuring sufficient strength and high reliability. Also,
Since there is no need to move the gas welding equipment during welding, reliable welding can be performed regardless of the working environment.
第１図〜第１４図は本発明の実施例を示すものであって
、
第１図はガス溶接装置の斜視図、
第２図はノズル部（バーナ一部）の平面（一部断面）図
、
第３図はノズルの拡大断面図、
第４図は噴出口側から見たノズルの拡大正面図、第５図
、第６図及び第７図は溶接作業の各段階ルの拡大正面図
、
第１０図は他のバーナ一部の平面図、
第１１図は第１０図のＸＴ−ＸＩ 線矢視拡大断面図、
第１２図は更に他のバーナ一部の拡大部分正面図、
第１３図は更に他のノズルの噴出口側から見た拡大正面
図、
第１４図は更に他の例によるガス溶接装置の正面図
である。
第１５図〜第１８図は従来例を示すものであって、
第１５図及び第１６図は夫々ノズル部（バーナ一部）の
平面図、
第１７図及び第１８図は溶接作業の各段階を示す正面図
である。
なお、図面に示された符号に於いて、
１・・・・・・・・・吹管部
２・・・・・・・・・ノズル部（バーナ一部）６・・・
・・・・・・吹管
１１．１２．４１．４２・・・・・・・・・分岐管１３
．１４．１５．１６．４３．４４．４５・・・・・・・
・・ノズル
１９・・・・・・・・・対象物
２０・・・・・・・・・被溶接部
２１．２２．５１．５２・・・・・・・・・混合ガス噴
出口２９・・・・・・・・・混合ガス
３３・・・・・・・・・隙間
３５・・・・・・・・・溶接部（環状突部）である。1 to 14 show embodiments of the present invention. FIG. 1 is a perspective view of a gas welding device, and FIG. 2 is a plan (partially cross-sectional) view of a nozzle portion (part of a burner). , Fig. 3 is an enlarged sectional view of the nozzle, Fig. 4 is an enlarged front view of the nozzle seen from the spout side, Figs. 5, 6, and 7 are enlarged front views of each stage of welding work, Fig. 10 is a plan view of a part of another burner, Fig. 11 is an enlarged sectional view taken along the line XT-XI in Fig. 10, Fig. 12 is an enlarged partial front view of a part of another burner, Fig. 13 14 is an enlarged front view of another nozzle as seen from the spout side, and FIG. 14 is a front view of a gas welding apparatus according to still another example. Figures 15 to 18 show conventional examples, Figures 15 and 16 are plan views of the nozzle part (part of the burner), and Figures 17 and 18 are each stage of welding work. FIG. In addition, in the symbols shown in the drawings, 1...Blowpipe section 2...Nozzle section (part of burner) 6...
・・・・・・Blowpipe 11.12.41.42・・・・・・・・・Branch pipe 13
．． 14.15.16.43.44.45...
...Nozzle 19...Target 20...Part to be welded 21.22.51.52...Mixed gas spout 29. . . . Mixed gas 33 . . . Gap 35 . . . Welded portion (annular protrusion).
Claims (1)
との混合ガスを吹付けて溶接を行うに際し、前記対象物
の被溶接部の両側に前記混合ガスを同時に吹付け、この
混合ガス中の燃料ガスの燃焼熱によって前記対象物を溶
接するガス溶接方法。 ２、ガス溶接されるべき対象物の被溶接部の周囲に、燃
料ガスと酸化性ガスとの混合ガスを噴出せしめる噴出口
を有し、この噴出口からの前記混合ガス中の燃料ガスの
燃焼熱によって前記対象物を溶接するように構成された
ガス溶接装置において、前記被溶接部の一方の側に前記
混合ガスを噴出する第一の噴出口と、前記被溶接部の他
方の側に前記混合ガスを噴出する第二の噴出口とが共に
配置されていることを特徴とするガス溶接装置。[Claims] 1. When performing welding by spraying a mixed gas of fuel gas and oxidizing gas onto an object to be gas welded, the mixed gas is simultaneously applied to both sides of the welded part of the object. A gas welding method in which the object is welded by spraying and combustion heat of fuel gas in the mixed gas. 2. The object to be gas welded has a spout for spouting a mixed gas of fuel gas and oxidizing gas around the welded part of the object to be gas welded, and the fuel gas in the mixed gas is combusted from the spout. In a gas welding device configured to weld the object by heat, a first spout for spouting the mixed gas on one side of the welded part, and a first spout spouting the mixed gas on the other side of the welded part. A gas welding device characterized in that a second ejection port for ejecting a mixed gas is also arranged.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP62079312A JPH0613142B2 (en) | 1987-03-31 | 1987-03-31 | Gas welding equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP62079312A JPH0613142B2 (en) | 1987-03-31 | 1987-03-31 | Gas welding equipment |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS63248570A true JPS63248570A (en) | 1988-10-14 |
| JPH0613142B2 JPH0613142B2 (en) | 1994-02-23 |
Family
ID=13686339
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP62079312A Expired - Fee Related JPH0613142B2 (en) | 1987-03-31 | 1987-03-31 | Gas welding equipment |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0613142B2 (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5265788A (en) * | 1990-11-21 | 1993-11-30 | Kabushiki Kaisha Shinkawa | Bonding machine with oxidization preventive means |
| JPH07145917A (en) * | 1993-11-22 | 1995-06-06 | Shoei Kogyo:Kk | Burner for pressure welding |
| US6471114B2 (en) * | 1998-12-21 | 2002-10-29 | Uniweld Products, Inc. | Multiple flame torch tip and method |
| US8205784B1 (en) * | 2011-04-29 | 2012-06-26 | Trane International Inc. | Systems and methods for joining metal |
| US20140084043A1 (en) * | 2010-12-21 | 2014-03-27 | Michael F. Taras | Automated brazing system |
| IT202100004718A1 (en) * | 2021-03-01 | 2022-09-01 | Fre Tor S R L | WELDING AND/OR BRAZING DEVICE |
| WO2024041478A1 (en) * | 2022-08-25 | 2024-02-29 | 合肥海尔电冰箱有限公司 | Welding device for pipeline |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS544689A (en) * | 1977-06-09 | 1979-01-13 | Nissan Motor Co Ltd | Corrugated board |
| JPS58154342U (en) * | 1982-04-06 | 1983-10-15 | 玉木 勇治郎 | gas welding equipment |
| JPS59167622A (en) * | 1983-03-11 | 1984-09-21 | Daito Gas Assetsu Kk | Gas welding device |
-
1987
- 1987-03-31 JP JP62079312A patent/JPH0613142B2/en not_active Expired - Fee Related
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS544689A (en) * | 1977-06-09 | 1979-01-13 | Nissan Motor Co Ltd | Corrugated board |
| JPS58154342U (en) * | 1982-04-06 | 1983-10-15 | 玉木 勇治郎 | gas welding equipment |
| JPS59167622A (en) * | 1983-03-11 | 1984-09-21 | Daito Gas Assetsu Kk | Gas welding device |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5265788A (en) * | 1990-11-21 | 1993-11-30 | Kabushiki Kaisha Shinkawa | Bonding machine with oxidization preventive means |
| JPH07145917A (en) * | 1993-11-22 | 1995-06-06 | Shoei Kogyo:Kk | Burner for pressure welding |
| US6471114B2 (en) * | 1998-12-21 | 2002-10-29 | Uniweld Products, Inc. | Multiple flame torch tip and method |
| US20140084043A1 (en) * | 2010-12-21 | 2014-03-27 | Michael F. Taras | Automated brazing system |
| US8960522B2 (en) * | 2010-12-21 | 2015-02-24 | Carrier Corporation | Automated brazing system |
| US8205784B1 (en) * | 2011-04-29 | 2012-06-26 | Trane International Inc. | Systems and methods for joining metal |
| US8499995B2 (en) | 2011-04-29 | 2013-08-06 | Trane International, Inc. | Systems and methods for joining metal |
| IT202100004718A1 (en) * | 2021-03-01 | 2022-09-01 | Fre Tor S R L | WELDING AND/OR BRAZING DEVICE |
| WO2024041478A1 (en) * | 2022-08-25 | 2024-02-29 | 合肥海尔电冰箱有限公司 | Welding device for pipeline |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0613142B2 (en) | 1994-02-23 |
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| Date | Code | Title | Description |
|---|---|---|---|
| LAPS | Cancellation because of no payment of annual fees |