JPH051118B2 - - Google Patents
Info
- Publication number
- JPH051118B2 JPH051118B2 JP12933885A JP12933885A JPH051118B2 JP H051118 B2 JPH051118 B2 JP H051118B2 JP 12933885 A JP12933885 A JP 12933885A JP 12933885 A JP12933885 A JP 12933885A JP H051118 B2 JPH051118 B2 JP H051118B2
- Authority
- JP
- Japan
- Prior art keywords
- welding
- wire
- flux
- joining
- wires
- 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 - Lifetime
Links
- 238000003466 welding Methods 0.000 claims description 39
- 230000004907 flux Effects 0.000 claims description 17
- 238000005304 joining Methods 0.000 claims description 13
- 238000000034 method Methods 0.000 claims description 13
- 239000000945 filler Substances 0.000 claims description 2
- 238000004519 manufacturing process Methods 0.000 description 7
- 238000010586 diagram Methods 0.000 description 6
- 230000004927 fusion Effects 0.000 description 5
- 238000005491 wire drawing Methods 0.000 description 5
- 230000007547 defect Effects 0.000 description 4
- 238000010438 heat treatment Methods 0.000 description 4
- 229910000831 Steel Inorganic materials 0.000 description 3
- 239000010959 steel Substances 0.000 description 3
- 230000005611 electricity Effects 0.000 description 2
- 239000007787 solid Substances 0.000 description 2
- 239000011324 bead Substances 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 238000002788 crimping Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000001788 irregular Effects 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 239000012779 reinforcing material Substances 0.000 description 1
- 239000002893 slag Substances 0.000 description 1
Landscapes
- Arc Welding In General (AREA)
- Nonmetallic Welding Materials (AREA)
Description
【発明の詳細な説明】
「産業上の利用分野」
本発明は、フラツクスを包含してなる溶接用ワ
イヤの溶接接合方法に関するものである。DETAILED DESCRIPTION OF THE INVENTION "Field of Industrial Application" The present invention relates to a method for welding and joining welding wires containing flux.
「従来の技術」
フラツクス入り溶接用ワイヤ(以下ワイヤとい
う)は、溶接作業性にすぐれ、特に安定したアー
クで外観の良いビードが半自動・自動溶接にて得
られることから、広く用いられている。この断面
形状は、第2図a〜fに示すように鋼管等の鋼2
の内側に溶接作業性及び溶着金属の靭性等に影響
を及ぼすフラツクスが充填された構造をとつてい
る。ところで、このような複雑な形状をしたワイ
ヤを製造する場合、必然的に製造途中の種々の線
径及び製品径において、ワイヤ間の接合を行う必
要が生じる。``Prior Art'' Flux-cored welding wire (hereinafter referred to as wire) is widely used because it has excellent welding workability, and in particular, a stable arc and a bead with good appearance can be obtained by semi-automatic and automatic welding. This cross-sectional shape is similar to that of a steel 2 such as a steel pipe, as shown in Fig. 2 a to f.
The inside of the weld is filled with flux, which affects welding workability and the toughness of the deposited metal. By the way, when manufacturing wires having such complicated shapes, it is inevitably necessary to perform bonding between the wires at various wire diameters and product diameters during the manufacturing process.
一般にソリツドワイヤつまり、フラツクスの含
有していない実体ワイヤの製造工程において、ワ
イヤ間の接合を行う場合、通電による抵抗発熱を
利用し、接合部を加熱し、加圧により圧着させる
バツト溶接や、フラツシユバツト溶接が用いられ
ている。 Generally, when joining wires in the manufacturing process of solid wires, that is, solid wires that do not contain flux, we use butt welding or flash butt welding, which utilizes resistance heat generated by electricity to heat the joint and pressurize it to bond. is used.
しかし、フラツクスを含有しているワイヤの場
合、同様な手段で溶接を行うと第3図に示すごと
く、内側のフラツクスが溶融し、スラグ状あるい
はガス状で残留するため融合不良部4を形成し、
断線することになる。 However, in the case of a wire containing flux, if welding is performed using the same method, the inner flux will melt and remain in the form of slag or gas, forming a fusion defect 4, as shown in Figure 3. ,
There will be a disconnection.
尚、図中3はバリを示す。 Note that 3 in the figure indicates a burr.
この対策として、特開昭58−112671、特開昭58
−116982、及び特開昭58−168481には、内側のフ
ラツクスを除去し、いわゆるパイプの状態で圧接
する方法、さらに、この中に補強材や脱酸剤等を
つめこむ方法が提示されている。 As a countermeasure to this, Japanese Patent Application Laid-Open No. 58-112671,
-116982 and JP-A-58-168481 propose a method of removing the inner flux and press-welding it in a so-called pipe state, and a method of stuffing reinforcing material, deoxidizing agent, etc. into the pipe.
「発明が解決しようとする問題点」
しかるに、この場合、フラツクスを除去するた
めにドリル等を用い穴を開けることが必要である
こと、及び穴の中に、充填物をつめこむ工程が必
要とのことから、接合にかなりの時間を有し、製
造ラインの停止時間が長くなるため、実製造への
適用に問題である。さらに、十分に注意しても接
合時ワイヤ内面に除去不能なバリと言われる硬化
層が生じ、これが次工程である伸線工程で断線及
び不規則なワイヤぐせ等を生じ、製造上に問題と
なる。さらに、溶接時のワイヤ送給に影響を及ぼ
すこととなり、溶接上にも問題であつた。``Problem to be solved by the invention'' However, in this case, it is necessary to make a hole using a drill etc. to remove the flux, and a process of filling the hole with a filler is necessary. Therefore, it takes a considerable amount of time for bonding, and the production line has to be stopped for a long time, which poses a problem when applied to actual production. Furthermore, even if sufficient care is taken, a hardened layer called burr that cannot be removed is generated on the inner surface of the wire during bonding, which causes wire breakage and irregular wire curls in the next wire drawing process, causing manufacturing problems. Become. Furthermore, it affected the wire feeding during welding, which was also a problem in welding.
「問題点を解決するための手段」、「作用」
本発明は叙上の事情に鑑みなされたもので、そ
の要旨とするところは、問題とするワイヤは第2
図に示す断面を有しており、フラツクスの充填量
も種々存在する。"Means for Solving the Problems" and "Operations" The present invention was made in view of the above circumstances, and its gist is that the wire in question is the second wire.
It has the cross section shown in the figure, and there are various flux filling amounts.
しかし、接合時は、少なくとも接合される部分
には、フラツクスの残留があつてはならないこ
と、さらに、内面にバリが出てはならないことが
必須条件であることに留意して、ワイヤ端部のフ
ラツクスを溶接長さすなわち溶接代以上に除去
し、その後、除去後の空洞をハンマーあるいは伸
線ダイス等で圧着したるのち、通常のバツト溶接
方法にて接合することにより、融合不良のない、
しかも簡易な接合のできる方法を開発した点にあ
る。 However, when joining, it is essential to keep in mind that there should be no residual flux at least on the part to be joined, and that there should be no burrs on the inner surface. By removing the flux beyond the welding length, that is, the welding margin, and then crimping the removed cavity with a hammer or wire drawing die, etc., and then joining using the normal butt welding method, we can create a welding method with no fusion defects.
Moreover, we have developed a method that allows for simple joining.
この場合、フラツクス除去長さは、溶接長さ以
上としているが、あまり長くなるとフラツクスの
ない部分が製品となるため、適度な長さを選ぶ必
要がある。 In this case, the flux removal length is set to be longer than the welding length, but if it becomes too long, the part without flux will become the product, so it is necessary to select an appropriate length.
「実施例」
以下、これの詳細を図に基づいて詳細に説明す
る。"Example" Hereinafter, details of this will be explained in detail based on the drawings.
第1図は本発明バツト溶接説明図で、図中lは
圧着部分を示し、Lは、ワイヤ出し長さすなわ
ち、電極5より突出したワイヤの長さである。 FIG. 1 is an explanatory diagram of the butt welding according to the present invention, in which l indicates a crimped portion, and L indicates the wire length, that is, the length of the wire protruding from the electrode 5.
a図は、ワイヤを装着し、バツト溶接開始状態
を示している。ここで、ワイヤ1は前述の如く、
ワイヤ端から溶接代図中l′以上に内部のフラツク
スを十分に除去したのち、空洞をハンマーで圧着
している。この状態で、電極5により通電、圧接
作業(バツト溶接作業)を実施した。b図はこの
状態を示したもので、圧接作業時に発生したバリ
3が溶接部周辺に付着している。 Figure a shows a state in which the wire is attached and butt welding is started. Here, the wire 1 is as described above.
After thoroughly removing the flux from the wire end to a level greater than l' in the welding allowance diagram, the cavity is crimped with a hammer. In this state, electricity was applied using the electrode 5 and pressure welding work (butt welding work) was performed. Figure b shows this state, in which burrs 3 generated during pressure welding work are attached to the periphery of the welded part.
しかし、従来内面にも発生していたバリは、上
述の如くフラツクスを除去した後の空洞を圧着処
理しているので、発生していない。 However, burrs, which conventionally occur on the inner surface, do not occur because the cavity is crimped after the flux has been removed as described above.
溶接部周辺のバリ3は、グラインダ等で削りと
られ、ワイヤ接合作業が完了する。 The burr 3 around the welded portion is shaved off with a grinder or the like, and the wire joining work is completed.
この作業は、製造途中のワイヤ及び製品径にお
いても何ら支障なく行うことができる。 This operation can be carried out without any problem even when the wire is being manufactured and the diameter of the product is being used.
しかして、簡易迅速作業にてバリの全く無い溶
接がなし得た。 Thus, welding without any burrs could be achieved with simple and quick work.
本発明による実際の接合結果を述べると次記の
通りである。 The actual joining results according to the present invention are as follows.
すなわち、溶接用フラツクス入りワイヤの製造
工程において、ワイヤ径7.0mmφ、3.2mmφ、2.0mm
φ、1.2mmφ(製品径)の各線径にて、接合すべき
場所のフラツクスを除去し、その空洞を伸線時の
ワイヤ口付機にて圧着したのちワイヤ接合を行つ
た。この時の溶接結果を第4図に示す。 In other words, in the manufacturing process of flux-cored wire for welding, wire diameters of 7.0mmφ, 3.2mmφ, 2.0mm
For each wire diameter of φ and 1.2 mmφ (product diameter), flux was removed from the area to be joined, the cavity was crimped using a wire-clipping machine during wire drawing, and then wire joining was performed. The welding results at this time are shown in Figure 4.
尚、この場合の加熱条件、突き合せ条件は、ワ
イヤ径7.0mmφで3.2tの加熱、1100℃の加熱、突き
合せ距離20mmとし、その他の径では、1.0tの加
圧、1100℃の加熱を行い、突き合せ距離を、3.2
mmφで20mm、2.0mmφで11mm、1.2mmφで7.5mmとし
て実施した。 In addition, the heating conditions and butt conditions in this case are 3.2t heating, 1100℃ heating, butt distance 20mm for wire diameter 7.0mmφ, and for other diameters, 1.0t pressure and 1100℃ heating. and the butt distance is 3.2
It was carried out with mmφ of 20mm, 2.0mmφ of 11mm, and 1.2mmφ of 7.5mm.
第4図の図表からわかるように、溶接長さ(溶
接代)以上にフラツクスを除去し、圧着部分を得
たワイヤは、いずれの線径においても融合不良を
生じずに接合が可能となつた。さらにその後の伸
線及びワイヤ溶接時にも何ら問題を起こさなかつ
た。 As can be seen from the diagram in Figure 4, wires with a crimped portion obtained by removing flux beyond the welding length (welding allowance) can be joined without fusion failure at any wire diameter. . Furthermore, no problems occurred during subsequent wire drawing and wire welding.
「発明の効果」
以上のように、フラツクス入り溶接用ワイヤの
接合(バツト溶接)において、本発明の方法によ
れば融合不良を生じることなく。次工程の伸線に
も問題なく行え、製品径への適用でも送給不良を
生じることなく、良好な溶接が可能となり、さら
に、短時間での接合が可能となるため、本発明の
工業的価値は非常に大きいものである。"Effects of the Invention" As described above, the method of the present invention does not cause fusion defects in joining flux-cored welding wires (butt welding). The next process of wire drawing can be carried out without any problems, and even when applied to product diameters, good welding can be performed without causing feeding defects, and furthermore, joining can be performed in a short time. The value is huge.
第1図a,bは本発明接合方法の手順図、第2
図a〜fは各種のフラツクス入り溶接用ワイヤの
断面形状図、第3図は本発明を実施しない場合の
フラツクス入り溶接用ワイヤのバツト溶接部の断
面状況説明図、第4図は本発明を実施した溶接結
果を示す図表である。
1……ワイヤ、2……鋼、3……バリ、4……
融合不良部、5……電極、l′……溶接代、l……
圧着部分、L……ワイヤ出し長さ。
Figures 1a and b are procedural diagrams of the joining method of the present invention;
Figures a to f are cross-sectional shapes of various flux-cored welding wires, Figure 3 is an explanatory diagram of the cross-sectional state of the butt weld of flux-cored welding wires when the present invention is not implemented, and Figure 4 is a diagram showing the cross-sectional state of the butt welded portion of the flux-cored welding wire when the present invention is not implemented. It is a chart showing the results of welding performed. 1... wire, 2... steel, 3... burr, 4...
Poor fusion part, 5... Electrode, l'... Welding allowance, l...
Crimp part, L...wire length.
Claims (1)
接合するに際し、接続すべき2本の両ワイヤ端部
の充填フラツクスを圧着部相当長さ除去して空洞
部を形成し、この空洞部を圧着したのち、前記両
端部間を突き合わせて溶接することを特徴とする
溶接用フラツクス入りワイヤの接合方法。1. When joining the ends of two flux-cored welding wires, remove the filler flux from the ends of the two wires to be connected to a length equivalent to the crimped part to form a cavity, and then crimp this cavity. A method for joining flux-cored wires for welding, characterized in that the two ends are then brought together and welded.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP12933885A JPS61289993A (en) | 1985-06-14 | 1985-06-14 | Joining method for flux cored wire for welding |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP12933885A JPS61289993A (en) | 1985-06-14 | 1985-06-14 | Joining method for flux cored wire for welding |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS61289993A JPS61289993A (en) | 1986-12-19 |
JPH051118B2 true JPH051118B2 (en) | 1993-01-07 |
Family
ID=15007136
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP12933885A Granted JPS61289993A (en) | 1985-06-14 | 1985-06-14 | Joining method for flux cored wire for welding |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS61289993A (en) |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2652586B2 (en) * | 1990-09-28 | 1997-09-10 | 日鐵溶接工業株式会社 | Butt welding method of flux cored wire for welding |
-
1985
- 1985-06-14 JP JP12933885A patent/JPS61289993A/en active Granted
Also Published As
Publication number | Publication date |
---|---|
JPS61289993A (en) | 1986-12-19 |
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