JPH0155074B2 - - Google Patents
Info
- Publication number
- JPH0155074B2 JPH0155074B2 JP6397184A JP6397184A JPH0155074B2 JP H0155074 B2 JPH0155074 B2 JP H0155074B2 JP 6397184 A JP6397184 A JP 6397184A JP 6397184 A JP6397184 A JP 6397184A JP H0155074 B2 JPH0155074 B2 JP H0155074B2
- Authority
- JP
- Japan
- Prior art keywords
- welding
- arc
- electrode rod
- present
- bead
- 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 28
- 238000000034 method Methods 0.000 claims description 20
- 239000000523 sample Substances 0.000 claims description 5
- 239000010953 base metal Substances 0.000 claims 1
- 239000011324 bead Substances 0.000 description 15
- 230000035515 penetration Effects 0.000 description 7
- 239000000463 material Substances 0.000 description 5
- 238000002844 melting Methods 0.000 description 3
- 230000008018 melting Effects 0.000 description 3
- 239000002184 metal Substances 0.000 description 3
- 229910052751 metal Inorganic materials 0.000 description 3
- 230000015572 biosynthetic process Effects 0.000 description 2
- 230000000052 comparative effect Effects 0.000 description 2
- 238000010790 dilution Methods 0.000 description 2
- 239000012895 dilution Substances 0.000 description 2
- 229910001209 Low-carbon steel Inorganic materials 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 239000013078 crystal Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000006185 dispersion Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 230000004907 flux Effects 0.000 description 1
- 230000004927 fusion Effects 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 150000002739 metals Chemical class 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
- 238000009941 weaving 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
- B23K9/00—Arc welding or cutting
- B23K9/08—Arrangements or circuits for magnetic control of the arc
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Plasma & Fusion (AREA)
- Mechanical Engineering (AREA)
- Arc Welding In General (AREA)
- Arc Welding Control (AREA)
Description
【発明の詳細な説明】
本発明は、磁気制御TIG溶接法に関するもので
ある。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a magnetically controlled TIG welding process.
アーク溶接の中で最も継手品質の高いTIG溶接
は、ワイヤの溶融速度が遅く能率が劣ることが欠
点とされている。 TIG welding, which has the highest joint quality among arc welding methods, has the disadvantage of slow wire melting speed and poor efficiency.
このようなワイヤ溶融量を高める方法として
は、大電流化する方法、２電極法、ホツトワイヤ
法などがあるが、これらの方法では溶接電流を高
めるなど、エネルギ消費量が著しく増大すること
になる。しかも、一般的に大電流化、高ワイヤ速
度条件では、溶込みが深くなると同時に凸ビード
化する傾向を示し、良好なビード形状を得難くな
るという問題がある。 Methods for increasing the amount of wire melting include a method of increasing the current, a two-electrode method, a hot wire method, etc. However, these methods involve increasing the welding current, resulting in a significant increase in energy consumption. Moreover, under conditions of large current and high wire speed, there is generally a tendency for the bead to become convex as the penetration deepens, making it difficult to obtain a good bead shape.
本発明は、磁気制御アークの特性を利用して、
アーク入力が同一条件においても従来のTIG溶接
法に比べてワイヤ溶融量を著しく高め、従つて溶
接電流に比して高能率化を図ることを可能にした
TIG溶接法を提供しようとするものである。 The present invention utilizes the characteristics of magnetically controlled arc to
Even under the same arc input conditions, the amount of wire melting is significantly increased compared to conventional TIG welding, making it possible to achieve higher efficiency compared to welding current.
It attempts to provide a TIG welding method.
また、本発明は上記溶接の高能率化をはかりな
がら、凸形ビードになるのを抑制すると共に、溶
込み率の少ない低希釈率溶接を行うことが可能な
TIG溶接方法を提供しようとするものである。 Furthermore, the present invention improves the efficiency of the welding described above, suppresses the formation of a convex bead, and makes it possible to perform low dilution rate welding with a small penetration rate.
This is an attempt to provide a TIG welding method.
かかる目的を達成するため、本発明の磁気制御
TIG溶接法は、先端を扁平にしてその幅の中心に
溝を形成した電極棒を用い、この電極棒と母材と
の間に発生されたアークに対してその電極棒の近
辺に配置した電磁プローブによつて交番磁場を作
用させ、溶融池に複数本のワイヤを並列送給しな
がらアーク溶接を行うことを特徴とするものであ
る。 In order to achieve this purpose, the magnetic control of the present invention
The TIG welding method uses an electrode rod with a flat tip and a groove formed in the center of its width. This method is characterized by applying an alternating magnetic field using a probe and performing arc welding while feeding multiple wires in parallel to the molten pool.
以下に図面を参照して本発明の方法をさらに詳
細に説明する。 The method of the present invention will be explained in more detail below with reference to the drawings.
本発明によるTIG溶接においては、第１図に示
すように、母材１に対設するノズル２に特殊形状
の電極棒３を取付けて使用する。この電極棒３
は、その先端を扁平にして中央に溝４を形設し、
それによつて溝の両側に陰極点となる一対の突部
５を形成したもので、溶接に際しては扁平な面が
溶接線に対して直角になるようにして使用し、そ
の際アークが２個所の陰極点から発生するため、
適度なアーク力の分散が起ることになる。 In TIG welding according to the present invention, as shown in FIG. 1, a specially shaped electrode rod 3 is attached to a nozzle 2 that is disposed opposite to a base material 1. This electrode rod 3
The tip is flattened and a groove 4 is formed in the center,
As a result, a pair of protrusions 5 are formed on both sides of the groove, which serve as cathode spots. When welding, the flat surface is perpendicular to the welding line, and the arc is formed at two locations. Because it is generated from the cathode spot,
Appropriate arc force dispersion will occur.
また、上記電極棒３を用いて溶接を行うにあた
り、その電極棒３の近辺に配置した電極プローブ
６によりアークの磁気制御を行うが、上記電極プ
ローブ６による交番磁場は、溶接線に対して実質
的に平行に発生させ、それによりアークを溶接線
と直角の方向に振らせるものであり、その際の磁
場周波数は他の溶接条件との関連において適宜設
定することができる。 Furthermore, when performing welding using the electrode rod 3, the arc is magnetically controlled by the electrode probe 6 placed near the electrode rod 3, but the alternating magnetic field generated by the electrode probe 6 is substantially The arc is generated in parallel to the welding line, thereby causing the arc to swing in a direction perpendicular to the welding line, and the magnetic field frequency at this time can be set as appropriate in relation to other welding conditions.
このような磁場によりアーク形状の制御を行う
と、上記電極棒３の形状との相互作用によりアー
クに広がりが生じるため、本発明においてはそれ
を利用して複数本のワイヤ７，７を溶融池８に並
列送給し、単位時間当りの溶着金属量を増大させ
る。この場合に、従来から用いられている一般的
なアーク入力条件において、その場合と同等のワ
イヤを用い、そのワイヤの複数本を並列送給する
ため、例えば図示したように２本のワイヤを送給
する場合には、溶着金属量を約２倍にすることが
できる。 When the arc shape is controlled by such a magnetic field, the arc spreads due to interaction with the shape of the electrode rod 3, so in the present invention, this is utilized to spread the plurality of wires 7, 7 into the molten pool. 8 in parallel to increase the amount of welded metal per unit time. In this case, under the general arc input conditions conventionally used, the same wire as in that case is used and multiple wires are fed in parallel, so for example, two wires are fed as shown in the figure. In this case, the amount of weld metal can be approximately doubled.
さらに、このような本発明の方法によつて溶接
を行うと、磁気アークのウイービング効果により
良効な形状の溶接ビードを得ることができ、特に
凸形ビードになるのを抑制できると共に溶込み率
の少ない低希釈率溶接を行うことができる。従つ
て、良好なビード形状を要求される各種用途に有
効であるばかりでなく、母材上に異種金属の肉盛
りを行う場合、例えば軟鋼材上に耐蝕性のあるス
テンレス材を表面肉盛りする場合等にも極めて有
効である。しかも、本発明においては入熱量が少
ないため、溶接ひずみ及び結晶の粗大化を防ぎ、
溶接、継手品質の向上をはかることができる。 Furthermore, when welding is performed by the method of the present invention, it is possible to obtain a well-shaped weld bead due to the weaving effect of the magnetic arc, and in particular, it is possible to suppress the formation of a convex bead and to improve the penetration rate. It is possible to perform low dilution rate welding with less. Therefore, it is not only effective in various applications that require a good bead shape, but also when overlaying different metals on a base material, for example, when overlaying a corrosion-resistant stainless steel material on the surface of a mild steel material. It is also extremely effective in various cases. Moreover, in the present invention, since the amount of heat input is small, welding distortion and coarsening of crystals are prevented,
It is possible to improve welding and joint quality.
また、従来から知られている磁気制御溶接法
は、大電流高速溶接におけるハンピングビードの
防止、融合不良の改善等を主目的とするものであ
るが、本発明の方法においては、上述した電極棒
の形状及びワイヤ送給方法の改善と上記磁気制御
との有機的結合により、溶接の能率を大巾に改善
つ溶込み率を少なくした良好な溶接ビードを得る
ことができる。 In addition, conventionally known magnetically controlled welding methods are mainly aimed at preventing humping beads and improving fusion defects during high-current, high-speed welding, but in the method of the present invention, the above-mentioned electrode By organically combining improvements in the rod shape and wire feeding method with the magnetic control described above, welding efficiency can be greatly improved and a good weld bead with a reduced penetration rate can be obtained.
次に、本発明についての実施例を示す。 Next, examples of the present invention will be shown.
第２図は、本発明の方法（※印）、及び比較例
として円錐状電極を用いた場合、磁場を付与しな
い場合、１本のワイヤのみを送給した場合のビー
ド断面形状を示し、第３図はそれらの場合におけ
るビード幅、余盛、溶込みを示し、また第４図は
それらの場合における接触角及び溶込み率を示し
ている。なお、磁場を付与した場合における磁場
周波数は5kHz、アーク発生点における磁束密度
は40×10-4Tである。 Figure 2 shows the bead cross-sectional shapes when using the method of the present invention (marked with *) and using a conical electrode as a comparative example, when no magnetic field is applied, and when only one wire is fed. Figure 3 shows the bead width, additional buildup, and penetration in those cases, and Figure 4 shows the contact angle and penetration rate in those cases. In addition, when a magnetic field is applied, the magnetic field frequency is 5 kHz, and the magnetic flux density at the arc generation point is 40×10 −4 T.
これらの実施例からわかるように、本発明の方
法による溶接ビードは、比較例の場合に比してビ
ード巾が広がり、凸形ビードになることなく、溶
込み率も小さいという好ましい特性を有し、円錐
形電極で磁場を付与しながら２本のワイヤを送給
した場合と比べても、その場合に若干凸形でオ給
した場合と比べても、その場合に若干凸形でオー
バーラツプ気味のビードが得られるのに対し、極
めて良好なビード形状を得ることができる。 As can be seen from these examples, the weld bead obtained by the method of the present invention has favorable characteristics such that the bead width is wider than that of the comparative example, the bead does not become convex, and the penetration rate is small. , even when compared to the case where two wires are fed while applying a magnetic field with a conical electrode, the wires are slightly convex and overlap, even when compared to the case where the two wires are fed with a slightly convex shape. Although a bead is obtained, an extremely good bead shape can be obtained.
第１図は本発明の方法の実施状態を示す斜視
図、第２図ないし第４図は本発明に関する実験結
果の説明図である。
１……母材、３……電極棒、４……溝、６……
電磁プローブ、７……ワイヤ。
FIG. 1 is a perspective view showing the implementation state of the method of the present invention, and FIGS. 2 to 4 are explanatory diagrams of experimental results regarding the present invention. 1... Base material, 3... Electrode rod, 4... Groove, 6...
Electromagnetic probe, 7...wire.
Claims (1)
た電極棒を用い、この電極棒と母材との間に発生
させたアークに対してその電極棒の近辺に配置し
た電磁プローブによつて交番磁場を作用させ、溶
融池に複数本のワイヤを並列送給しながらアーク
溶接を行うことを特徴とする磁気制御TIG溶接
法。1 Using an electrode rod with a flat tip and a groove formed in the center of its width, an electromagnetic probe placed near the electrode rod is used to detect the arc generated between the electrode rod and the base metal. A magnetically controlled TIG welding method that performs arc welding while applying an alternating magnetic field to the molten pool and feeding multiple wires in parallel into the molten pool.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6397184A JPS60206581A (en) | 1984-03-30 | 1984-03-30 | Magnetically controlled tig welding method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6397184A JPS60206581A (en) | 1984-03-30 | 1984-03-30 | Magnetically controlled tig welding method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS60206581A JPS60206581A (en) | 1985-10-18 |
| JPH0155074B2 true JPH0155074B2 (en) | 1989-11-22 |
Family
ID=13244684
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP6397184A Granted JPS60206581A (en) | 1984-03-30 | 1984-03-30 | Magnetically controlled tig welding method |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS60206581A (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4936596B2 (en) * | 2001-02-02 | 2012-05-23 | 本田技研工業株式会社 | TIG filler welding equipment |
| KR102024119B1 (en) * | 2018-11-27 | 2019-09-24 | 부경대학교 산학협력단 | Tig welding device and method by torches in series |
-
1984
- 1984-03-30 JP JP6397184A patent/JPS60206581A/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS60206581A (en) | 1985-10-18 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| EXPY | Cancellation because of completion of term |