JPH0195880A - Electrode chip for arc welding - Google Patents
Electrode chip for arc weldingInfo
- Publication number
- JPH0195880A JPH0195880A JP62238246A JP23824687A JPH0195880A JP H0195880 A JPH0195880 A JP H0195880A JP 62238246 A JP62238246 A JP 62238246A JP 23824687 A JP23824687 A JP 23824687A JP H0195880 A JPH0195880 A JP H0195880A
- Authority
- JP
- Japan
- Prior art keywords
- conductive
- electrode
- tip
- arc welding
- electrode wire
- 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.)
- Pending
Links
- 238000003466 welding Methods 0.000 title claims abstract description 26
- 239000000919 ceramic Substances 0.000 claims abstract description 15
- 238000003780 insertion Methods 0.000 claims abstract description 14
- 230000037431 insertion Effects 0.000 claims abstract description 14
- 239000000654 additive Substances 0.000 claims abstract description 6
- 239000011521 glass Substances 0.000 claims abstract description 6
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 claims abstract description 5
- 230000000996 additive effect Effects 0.000 claims abstract description 4
- 229910052751 metal Inorganic materials 0.000 claims abstract description 4
- 239000002184 metal Substances 0.000 claims abstract description 4
- YXTPWUNVHCYOSP-UHFFFAOYSA-N bis($l^{2}-silanylidene)molybdenum Chemical compound [Si]=[Mo]=[Si] YXTPWUNVHCYOSP-UHFFFAOYSA-N 0.000 claims description 5
- 229910021343 molybdenum disilicide Inorganic materials 0.000 claims description 5
- HBMJWWWQQXIZIP-UHFFFAOYSA-N silicon carbide Chemical compound [Si+]#[C-] HBMJWWWQQXIZIP-UHFFFAOYSA-N 0.000 claims description 2
- 238000005260 corrosion Methods 0.000 abstract 2
- 230000007797 corrosion Effects 0.000 abstract 2
- 229910020968 MoSi2 Inorganic materials 0.000 abstract 1
- 238000000034 method Methods 0.000 abstract 1
- 230000000694 effects Effects 0.000 description 5
- 239000007789 gas Substances 0.000 description 4
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 3
- 229910052802 copper Inorganic materials 0.000 description 3
- 239000010949 copper Substances 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 238000005299 abrasion Methods 0.000 description 2
- 230000006866 deterioration Effects 0.000 description 2
- 239000011261 inert gas Substances 0.000 description 2
- ZOKXTWBITQBERF-UHFFFAOYSA-N Molybdenum Chemical compound [Mo] ZOKXTWBITQBERF-UHFFFAOYSA-N 0.000 description 1
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 1
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 230000002411 adverse Effects 0.000 description 1
- 229910052750 molybdenum Inorganic materials 0.000 description 1
- 239000011733 molybdenum Substances 0.000 description 1
- 230000000704 physical effect Effects 0.000 description 1
- 239000002244 precipitate Substances 0.000 description 1
- 239000011241 protective layer Substances 0.000 description 1
- 229910052710 silicon Inorganic materials 0.000 description 1
- 239000010703 silicon Substances 0.000 description 1
- 229910010271 silicon carbide Inorganic materials 0.000 description 1
- 238000004544 sputter deposition Methods 0.000 description 1
- 230000000087 stabilizing effect Effects 0.000 description 1
Abstract
Description
【発明の詳細な説明】
「産業上の利用分野」
本発明は、アーク溶接用電極チップに関するもので、詳
しくは、電極消耗式アーク溶接に用いる電極チップの改
良に関するものである。DETAILED DESCRIPTION OF THE INVENTION "Field of Industrial Application" The present invention relates to an electrode tip for arc welding, and more particularly to an improvement in an electrode tip used for electrode consumable arc welding.
「従来の技術」および「発明が解決しようとする問題点
」
一般に、機器の量産工程等において広く使用されている
電極消耗式アーク溶接用電極チップは、銅製管体の電極
チップ主部に電極ワイヤを挿通すると共に、そのチップ
主部の内側に導電部を設け、該導電部と電極ワイヤとを
摺接させ、該導電部を介して電極ワイヤに電流を導通し
ながら電極ワイヤを順次定量送し、電極ワイヤの先端と
被溶接物間にアークを生じさせて電極ワイヤを溶融させ
ながら溶着する構造に成っている。"Prior Art" and "Problems to be Solved by the Invention" In general, the consumable electrode tip for arc welding, which is widely used in the mass production process of equipment, has an electrode wire attached to the main part of the electrode tip of the copper tube. At the same time, a conductive part is provided inside the main part of the chip, the conductive part and the electrode wire are brought into sliding contact, and the electrode wire is sequentially fed in a fixed amount while conducting current to the electrode wire through the conductive part. The structure is such that an arc is generated between the tip of the electrode wire and the object to be welded, and the electrode wire is melted and welded.
以上の電極消耗式アーク溶接用電極チップは、アークに
よる高温にさらされると共に、溶接時に発生するスパッ
ター（アーク溶接時にとびちる溶融金属等の飛沫）を受
け、極めて酷な条件で使用されるので、定期的に交換し
ないと正常なアーク溶接が維持できない定性がある。即
ち、前記の従来の電極チップは導通部が銅製であるため
、耐熱性と耐摩耗性が充分でなく、その上アーク溶接の
スパッターが付着し易く、高温劣化と摩耗、ならびにス
パッター付着による表面平滑性の低下によって、導電部
と電極ワイヤ間の導通性能と、導電部との摺接による電
極ワイヤの定量送〕性を急速に低下させる難点がある。The above-mentioned consumable electrode tip for arc welding is exposed to high temperatures due to the arc, and is also subjected to spatter (splash of molten metal etc. that is splashed during arc welding) generated during welding, and is used under extremely harsh conditions. There is a characteristic that normal arc welding cannot be maintained unless it is replaced periodically. That is, since the conductive part of the conventional electrode tip is made of copper, it does not have sufficient heat resistance and wear resistance, and is also susceptible to arc welding spatter, resulting in high-temperature deterioration and wear, as well as surface smoothness due to spatter adhesion. However, due to the decrease in conductivity, there is a problem in that the conductivity between the conductive part and the electrode wire and the ability to feed the electrode wire in a fixed quantity due to sliding contact with the conductive part are rapidly deteriorated.
従って、例えば作動瀕度の高い自動車製造ラインにおい
ては、２〜８時間週期で電極チップを交換せざるを得な
いことが多く、その交換によるラインの体止損等を生ず
る不具合がある。Therefore, for example, in an automobile production line that is highly operational, it is often necessary to replace the electrode tip every 2 to 8 hours, and this replacement can cause problems such as damage to the line.
本発明は、以上の従来技術の難点を解消する改良された
電極チップを提供するのが目的である。SUMMARY OF THE INVENTION It is an object of the present invention to provide an improved electrode tip that overcomes the drawbacks of the prior art.
「問題点を解決するための手段」
以上の目的を達成する本発明の電極チップは「導電性金
属の管体から成シ、細心に沿って貫設した挿通孔に電極
ワイヤを挿通するアーク溶接用電極チップにおいて、前
記挿通孔の先端部位に、導 ゛電性セラミックスによっ
て成形され、中心孔に電極ワイヤを摺接挿通する管状の
導電部を装着固定すると共に、該導電部の先端端面を溶
接アークに臨ませて露出させ、該導電部を介して電極ワ
イヤに電流を導通する構造」が要旨である。``Means for Solving the Problems'' The electrode tip of the present invention that achieves the above-mentioned purpose is ``made of a conductive metal tube, and arc-welded by inserting an electrode wire into an insertion hole meticulously provided. In the electrode chip for use in the present invention, a tubular conductive part formed of conductive ceramics and through which the electrode wire is slidably inserted into the center hole is attached and fixed to the tip of the insertion hole, and the tip end surface of the conductive part is welded. The gist is "a structure in which the electrode wire is exposed facing the arc and current is conducted to the electrode wire through the conductive part."
そして、具体的には導電性セラミツクスとして下記のも
のが使用される。Specifically, the following conductive ceramics are used.
・二けい化モリブデン（けい七ブ生、以下同じ）（ＭＯ
Ｓｉ２）とガラス相添加物を主成分とするセラミツクス
、
・次代けい素（８ｉ（３）を主成分とする導電性セラミ
ツクス、
・μチ１ｖ（ＴｉＯ２）を主成分とする導電性セラミッ
クス、
「作用」
以上の構成の本発明の電極チップは、溶接アークに端面
が臨む導電部が導電性セラミツクスによヮて成形されて
いるので、導電部の耐熱性、高温耐摩耗性が向上すると
共に、導電部がスパッターの影響を受けることなく表面
平滑性が良好に保持され、電極チップの耐用性を格段に
向上することができる。・Molybdenum disilicide (Molybdenum disilicide, hereinafter the same) (MO
Ceramics mainly composed of Si2) and glass phase additives, ・Conductive ceramics mainly composed of next-generation silicon (8i(3)), ・Conductive ceramics mainly composed of μchi1v (TiO2), In the electrode tip of the present invention having the above configuration, the conductive part whose end face faces the welding arc is formed of conductive ceramics, so the heat resistance and high temperature wear resistance of the conductive part are improved, and the conductive part is The surface smoothness of the electrode chip is maintained well without being affected by sputtering, and the durability of the electrode chip can be significantly improved.
「実施例」
以下、本発明の一実施例を示す第１図を参照して詳しく
説明する。図において、銅製の管体な成して軸心方向に
電極ワイヤ挿通孔８を貫設した電極チップ主部２と、そ
の電極ワイヤ挿通孔８の先端（図示下端）部位に設けた
導電部４から成シ、電極ワイヤ挿通孔８に電極ワイヤ５
を挿通し、導電部４を介して電極チップ主部２から電極
ワイヤ６に電流を導通し、電極ワイヤ５の先端と被溶着
物との間にアークを生じさせ、電極ワイヤ５を定量送ル
して順次溶着する電極消耗式アーク溶接用電極チップに
おいて、導電部４は、二けい化モリブデン（ＭＯＳｉ２
）と容積比２０％のガラス相添加物を主成分とする導電
性セラミツクスによって成形された短小管体を成し、電
極ワイヤ挿通孔８の先端部位にかしめ装着されている。"Embodiment" Hereinafter, an embodiment of the present invention will be described in detail with reference to FIG. 1. In the figure, an electrode tip main part 2 is made of a copper tube and has an electrode wire insertion hole 8 extending in the axial direction, and a conductive part 4 is provided at the tip (lower end in the figure) of the electrode wire insertion hole 8. The electrode wire 5 is inserted into the electrode wire insertion hole 8.
A current is passed from the electrode tip main part 2 to the electrode wire 6 through the conductive part 4, an arc is generated between the tip of the electrode wire 5 and the welded object, and the electrode wire 5 is fed in a fixed amount. In the electrode tip for electrode consumable arc welding in which the electrode tip is sequentially welded, the conductive part 4 is made of molybdenum disilicide (MOSi2
) and a short tube body formed of conductive ceramics whose main component is a glass phase additive with a volume ratio of 20%, and is caulked to the tip of the electrode wire insertion hole 8.
即ち、導電部４は電極ワイヤ挿通孔８の先端に形成した
凹部６に挿着され、凹部６の下縁となる電極チップ主部
２の下縁部の肉を内側に塑性変形させて導電部４の下端
外周をかしめ係止し、導電部４の下端面７の大部分をア
ーク側に露出した状態で装着固定されている。That is, the conductive part 4 is inserted into the recess 6 formed at the tip of the electrode wire insertion hole 8, and the lower edge of the electrode chip main part 2, which is the lower edge of the recess 6, is plastically deformed inward to form the conductive part. The outer periphery of the lower end of the conductive part 4 is caulked and fixed, with most of the lower end surface 7 of the conductive part 4 being exposed to the arc side.
そして、導電部４の外周が凹部６に圧接すると共に、導
電部４の中心孔８が電極ワイヤ挿通孔８と同心に配列さ
れておシ、導電部４の中心孔８は電極ワイヤ５を摺接押
通し、電極チップ主部２から導電部４を介して電極ワイ
ヤ５に電流が導通するように形成されている。なお、こ
の実施例の導電部４の寸法諸元は内直径：１．２粍、外
直径二６．０粍、長さ：５．０粍である。また、この実
施例の電極チップは、不活性ガスを使用するガスシーμ
タイプであシ、電極チップ１は外套管体のガスノズＡ’
ＩＯの内部に収納され、ガスノズ１ｖｉｏと電極チ。The outer periphery of the conductive part 4 is pressed against the recess 6, and the center hole 8 of the conductive part 4 is arranged concentrically with the electrode wire insertion hole 8. The electrode tip is formed so that current is conducted from the electrode tip main portion 2 to the electrode wire 5 via the conductive portion 4. The dimensions of the conductive portion 4 in this example are: inner diameter: 1.2 mm, outer diameter: 26.0 mm, and length: 5.0 mm. In addition, the electrode tip of this example has a gas seal using an inert gas.
Type: Electrode tip 1 is the gas nozzle A' of the outer tube body.
It is stored inside the IO, and includes a gas nozzle and an electrode.
プ１間の間隙９から不活性ガスを流出する。The inert gas flows out from the gap 9 between the pipes 1.
以上の実施例の電極チップ１は、導電部４がニけい化モ
リブデンとガラス相添加物を主成分とする導電性セラミ
ックスによって形成されているので、アーク溶接に必要
にして充分な電流が導通部４を介して電極ワイヤ５に導
通され、アーク溶接の電気的機能を確保することができ
る。In the electrode tip 1 of the above embodiment, the conductive portion 4 is formed of conductive ceramics containing molybdenum disilide and glass phase additives as main components, so that sufficient current necessary for arc welding can be applied to the conductive portion. The electrode wire 5 is electrically connected to the electrode wire 5 through the electrode wire 4, and the electrical function of arc welding can be ensured.
そして、導電部４の主成分となる二けい化モリブデンは
耐熱性と耐摩耗性に優れた物性を有するので、導電部４
の耐熱性耐摩耗性が向上する。そして、添加されたガラ
ス相添加物が高温（約１，０００℃）において析出し、
溶接時のアークに臨む導電部４の下端面や、その近傍の
表面にガラス質の保護層を形成するので、アーク溶接に
よるスパッターの付着が少くなると共に、付所しても極
めて剥離し易くなシ、表面平滑度が良好に維持できる作
用がある。Since molybdenum disilicide, which is the main component of the conductive part 4, has excellent physical properties such as heat resistance and wear resistance, the conductive part 4
Improves heat resistance and wear resistance. Then, the added glass phase additive precipitates at high temperature (approximately 1,000°C),
Since a glassy protective layer is formed on the lower end surface of the conductive part 4 that faces the arc during welding, and on the surface in the vicinity, the adhesion of spatter due to arc welding is reduced, and even if spatter is attached, it is extremely easy to peel off. Also, it has the effect of maintaining good surface smoothness.
従って、導電部４の高温劣化や摩耗が防止されると共に
スパッターによる悪影響が極めて少なくなシ、導電部４
の正常な機能が長く保持され、電極チップ１の耐用性を
格段に向上することができる。本実施例の電極チップと
従来構造の電極チップとの対比確認を、自動車生産ライ
ンの溶接ロポ、トを活用して実施した結果、本発明の電
極チップ１は従来物の１０〜２０倍の格段の耐久性を示
した。Therefore, high-temperature deterioration and abrasion of the conductive portion 4 are prevented, and the adverse effects of spatter are extremely reduced.
The normal function of the electrode tip 1 can be maintained for a long time, and the durability of the electrode tip 1 can be significantly improved. As a result of comparing the electrode tip of this example with an electrode tip of a conventional structure using a welding robot on an automobile production line, it was found that the electrode tip 1 of the present invention is 10 to 20 times stronger than the conventional structure. It showed durability.
なお、前記実施例の導電部４は、前記のかしめ固定のみ
ではなく、接着固定することがある。Note that the conductive portion 4 of the above embodiment may be fixed by adhesive instead of being fixed by caulking as described above.
一方、本発明の前記構成において、導電性セラミツクス
として、炭化けい素（８ｉＣ７）またはμチｆｉ／（Ｔ
ｉ０２） を主成分とするセラミツクスを用いた場合も
優れた耐熱性と耐摩耗性ならびに表面平滑性に基づく前
記第１図示実施例と近似した作用効果が期待できる。On the other hand, in the above structure of the present invention, silicon carbide (8iC7) or μchifi/(T
Even when ceramics containing i02) as the main component are used, it is possible to expect effects similar to those of the first embodiment shown above based on excellent heat resistance, abrasion resistance, and surface smoothness.
「発明の効果」
以上の説明のように、本発明のアーク溶接用電極チップ
は、電極チップの耐熱性と耐摩耗性を向上すると共に、
表面平滑性の維持による導電部の機能を安定し、電極チ
ップの耐用性を格段に向上する顕著な効果がある。"Effects of the Invention" As explained above, the electrode tip for arc welding of the present invention improves the heat resistance and wear resistance of the electrode tip, and
This has the remarkable effect of stabilizing the function of the conductive part by maintaining surface smoothness and significantly improving the durability of the electrode tip.
第１図二本発明−実施例の電極チップを示し、に）はそ
の正面断面図、０はに）のＡ人断面図符号、ｌ：電極チ
ップ、２：電極チップ主部、８：電極ワイヤ挿通孔、４
：導電部、５：電極ワイヤ、６：凹部、７：導電部の端
面、８：中心孔、９：間隙、１０：ガスノズμ
特許出願人 株式会社羽根田商会代理人弁
理士 岡 賢 美第１図
（Ｂ）Figure 1 shows the electrode tip of the present invention-embodiment, 2) is a front sectional view thereof, 0 is 2) A cross-sectional view of person A, 1: Electrode chip, 2: Main part of electrode chip, 8: Electrode wire Insertion hole, 4
: Conductive part, 5: Electrode wire, 6: Concave part, 7: End face of conductive part, 8: Center hole, 9: Gap, 10: Gas nozzle μ Patent applicant: Haneda Shokai Co., Ltd. Patent attorney Kenji Oka Figure 1 (B)
Claims (4)
た挿通孔に電極ワイヤを挿通するアーク溶接用電極チツ
プにおいて、前記挿通孔の先端部位に、導電性セラミツ
クスによって成形され、かつ、中心孔に電極ワイヤを摺
接挿通する管状の導電部を装着固定すると共に、該導電
部の先端面を溶接アークに臨ませて露出させ、該導電部
を介して電極ワイヤに電流を導通する構造を特徴とする
アーク溶接用電極チツプ。(1) In an electrode chip for arc welding, which is made of a conductive metal tube and in which an electrode wire is inserted through an insertion hole extending along the axis, the tip of the insertion hole is molded with conductive ceramics, In addition, a tubular conductive part through which the electrode wire is slidably inserted is attached and fixed in the center hole, and the tip surface of the conductive part is exposed to face the welding arc, and current is conducted to the electrode wire through the conductive part. An electrode chip for arc welding that features a structure that
加物を主成分とする導電性セラミックスの導電部から成
る特許請求の範囲第（１）項記載のアーク溶接用電極チ
ツプ。(2) An electrode chip for arc welding according to claim (1), comprising a conductive portion of conductive ceramics whose main components are molybdenum disilicide (MOSi_2) and a glass phase additive.
ツクスの導電部から成る特許請求の範囲第（１）項記載
のアーク溶接用電極チツプ。(3) An electrode tip for arc welding according to claim (1), which comprises a conductive portion made of conductive ceramics containing silicon carbide (SiC) as a main component.
ミツクスの導電部から成る特許請求の範囲第（１）項記
載のアーク溶接用電極チップ。(4) The electrode tip for arc welding according to claim (1), which comprises a conductive portion made of conductive ceramics whose main component is rutile (TiO_2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP62238246A JPH0195880A (en) | 1987-09-21 | 1987-09-21 | Electrode chip for arc welding |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP62238246A JPH0195880A (en) | 1987-09-21 | 1987-09-21 | Electrode chip for arc welding |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0195880A true JPH0195880A (en) | 1989-04-13 |
Family
ID=17027320
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP62238246A Pending JPH0195880A (en) | 1987-09-21 | 1987-09-21 | Electrode chip for arc welding |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0195880A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1041290C (en) * | 1996-04-12 | 1998-12-23 | 清华大学 | Welding electrode of carbon ceramic composite materials |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5546793A (en) * | 1978-09-28 | 1980-04-02 | Casio Computer Co Ltd | Tone generator in electronic musical instrument |
| JPS6127866A (en) * | 1984-07-16 | 1986-02-07 | Hitachi Ltd | Sheet material transport control device |
-
1987
- 1987-09-21 JP JP62238246A patent/JPH0195880A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5546793A (en) * | 1978-09-28 | 1980-04-02 | Casio Computer Co Ltd | Tone generator in electronic musical instrument |
| JPS6127866A (en) * | 1984-07-16 | 1986-02-07 | Hitachi Ltd | Sheet material transport control device |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1041290C (en) * | 1996-04-12 | 1998-12-23 | 清华大学 | Welding electrode of carbon ceramic composite materials |
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