JPH0237500Y2 - - Google Patents
Info
- Publication number
- JPH0237500Y2 JPH0237500Y2 JP1984151166U JP15116684U JPH0237500Y2 JP H0237500 Y2 JPH0237500 Y2 JP H0237500Y2 JP 1984151166 U JP1984151166 U JP 1984151166U JP 15116684 U JP15116684 U JP 15116684U JP H0237500 Y2 JPH0237500 Y2 JP H0237500Y2
- Authority
- JP
- Japan
- Prior art keywords
- metal cylinder
- welding
- nozzle
- stepped metal
- graphite
- 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 20
- 229910052751 metal Inorganic materials 0.000 claims description 19
- 239000002184 metal Substances 0.000 claims description 19
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 15
- 229910002804 graphite Inorganic materials 0.000 claims description 15
- 239000010439 graphite Substances 0.000 claims description 15
- 239000003575 carbonaceous material Substances 0.000 description 5
- 230000006870 function Effects 0.000 description 5
- 230000000694 effects Effects 0.000 description 4
- 239000000463 material Substances 0.000 description 3
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 2
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 239000002131 composite material Substances 0.000 description 2
- 229910052802 copper Inorganic materials 0.000 description 2
- 239000010949 copper Substances 0.000 description 2
- 238000003780 insertion Methods 0.000 description 2
- 230000037431 insertion Effects 0.000 description 2
- 150000002739 metals Chemical class 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000002265 prevention Effects 0.000 description 2
- 229910001369 Brass Inorganic materials 0.000 description 1
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 description 1
- 239000010951 brass Substances 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000007770 graphite material Substances 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 230000002045 lasting effect Effects 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 230000000704 physical effect Effects 0.000 description 1
- 238000007747 plating Methods 0.000 description 1
- 238000005498 polishing Methods 0.000 description 1
- 230000009993 protective function Effects 0.000 description 1
- 238000007790 scraping Methods 0.000 description 1
- 230000035939 shock Effects 0.000 description 1
Landscapes
- Arc Welding In General (AREA)
Description
【考案の詳細な説明】
〔産業上の利用分野〕
この考案は、TIG，MIGなどのガスシールド
電気溶接に用いられる溶接用ノズルに関する。[Detailed Description of the Invention] [Industrial Application Field] This invention relates to a welding nozzle used in gas-shielded electric welding such as TIG and MIG.
溶接用ノズルは、アーク溶接をおこなう際にト
ーチ部分に取り付けてガスシールド機能をもたら
すための付属部品で、銅あるいは鉄を基材とする
メタル系ノズルが汎用されている。しかし、メタ
ル系ノズルは材質的にスパツターが溶着し易く、
これが短時間内にノズル面に付着螺積してガスシ
ールド効果、アークの安定性、溶接ワイヤーの送
り出し等を阻害する欠点がある。このため、頻繁
な掻き落とし作業を必要とし、近時発展の目覚ま
しい自動溶接の分野においても生産性を低下させ
る大きな原因となつている。この現象を避ける目
的で、ノズル面にスパツタ付着防止用の薬剤を塗
布する方法が実用に供されているが、持続的効果
は十分でない。
A welding nozzle is an accessory that is attached to a torch to provide a gas shield function during arc welding, and metal nozzles made of copper or iron are commonly used. However, metal nozzles are prone to sputter welding due to their material.
This has the disadvantage that it adheres to the nozzle surface within a short period of time, impairing the gas shielding effect, arc stability, welding wire delivery, etc. For this reason, frequent scraping operations are required, which is a major cause of reduced productivity even in the field of automatic welding, which has seen remarkable progress in recent years. In order to avoid this phenomenon, a method of applying a spatter-preventing agent to the nozzle surface has been put into practical use, but the lasting effect is not sufficient.
カーボン材は不活性雰囲気下の耐熱性が著しく
高いうえに金属との親和性が低い材質特性を有し
ており、本来的に優れた耐久性とスパツタ付着防
止機能を具備することから従来から溶接用ノズル
への適用化が検討提案されている。 Carbon materials have extremely high heat resistance in an inert atmosphere and have material characteristics that have low affinity with metals, and have traditionally been used for welding due to their inherently excellent durability and spatter adhesion prevention function. Application to commercial nozzles has been considered and proposed.
例えば実公昭52−5149号に係る考案は、ガスシ
ールド自動溶接機の金属製ノズル先端部のうちス
パツタの付着する部分をカーボン材質で形成する
もので、接続部における金属の外側にカーボン材
質を装着接合することにより金属−カーボン間の
熱膨張率の差を利用して接合の強化を図る構造を
提案している。この構造はスパツタ付着防止には
効果はあるが、スパツタ付着部分に当るノズル先
端部（通常20〜30mm）が靭性に乏しいカーボン材
単体で構成されているため外部衝撃により容易に
亀裂破損を生じ、また反復使用後の放置過程で接
合部が弛緩し応々にしてカーボン材の抜け落ち現
象を起す問題点がある。 For example, in the invention disclosed in Utility Model Publication No. 52-5149, the part of the metal nozzle tip of a gas shield automatic welding machine where spatters adhere is made of carbon material, and the carbon material is attached to the outside of the metal at the connection part. We are proposing a structure that strengthens the bond by utilizing the difference in thermal expansion coefficient between metal and carbon. Although this structure is effective in preventing spatter adhesion, the nozzle tip (usually 20 to 30 mm), which is the part where spatter adheres, is made of a single carbon material with poor toughness, so it easily cracks and breaks due to external impact. Further, there is a problem in that the bonded portion loosens during the process of being left after repeated use, causing the carbon material to fall off from time to time.
特開昭58−221680号では、溶融焼結時に気孔率
３％以下、熱伝導率0.1Cal／cm・sec・℃以上の
緻密かつ均質な組織をもつグラフアイトからなる
溶接ノズルを提案しており、この特定された物理
的性質をもつグラフアイトノズルによりスパツタ
付着の有効防止と耐久性の向上を図つている。し
かし、この考案においてもノズル全体を強度的に
脆弱なグラフアイト材で構成しているため、溶接
時の機械的あるいは熱的衝撃による破損現象を避
けることはできない。 JP-A-58-221680 proposes a welding nozzle made of graphite, which has a dense and homogeneous structure with a porosity of 3% or less and a thermal conductivity of 0.1 Cal/cm・sec・℃ or more when melted and sintered. By using graphite nozzles with these specified physical properties, we aim to effectively prevent spatter adhesion and improve durability. However, even in this invention, since the entire nozzle is made of graphite material, which is weak in strength, damage caused by mechanical or thermal shock during welding cannot be avoided.
この考案は上記従来ノズルの問題点を解消し、
長期間の連続反復使用に際しても優れたスパツタ
付着防止性を保有するとともに、衝撃破損および
弛緩抜け落ち現象を伴うことのない金属−黒鉛複
合系の溶接用ノズルを提供するものである。
This idea solves the problems of the conventional nozzle mentioned above,
The present invention provides a metal-graphite composite welding nozzle that has excellent spatter adhesion prevention properties even when repeatedly used over a long period of time, and is free from impact damage and loosening and falling-off phenomena.
以下、この考案を図示の一実施例に基づいて説
明する。
This invention will be explained below based on an illustrated embodiment.
図において、１はトーチボデイのコネクターに
螺着される基幹ネジ部２および肉薄先端部３を備
える段付金属円筒である。この段付金属円筒１は
銅、真鍮あるいはこれら金属面にクロムメツキを
施した材質で構成し、肉薄先端部３を0.5〜1.5mm
の肉厚に形成することが望ましい。 In the figure, reference numeral 1 denotes a stepped metal cylinder having a basic threaded portion 2 and a thin tip portion 3 that are screwed into the connector of the torch body. This stepped metal cylinder 1 is made of copper, brass, or a material with chrome plating on the surface of these metals, and has a thin tip portion 3 of 0.5 to 1.5 mm.
It is desirable to form the wall with a thickness of .
４は黒鉛ブツシユで、肉薄先端部３の内面に挿
着される。黒鉛ブツシユ４は内径を段付金属円筒
１の肉厚部と同径とし、先端部分（２〜４mm）は
円形状を呈して段付金属円筒１の外径と合致する
ように加工されている。なお、黒鉛ブツシユ４は
そのままの状態でもスパツタ付着を効果的に防止
する機能を備えているが、その表面をバフ等によ
り鏡面研摩すると一層スパツタ付着に対する防止
機能を向上させることができる。 4 is a graphite bush, which is inserted into the inner surface of the thin tip portion 3. The graphite bush 4 has an inner diameter that is the same as the thick wall portion of the stepped metal cylinder 1, and a tip portion (2 to 4 mm) that has a circular shape and is machined to match the outer diameter of the stepped metal cylinder 1. . Although the graphite bush 4 has a function of effectively preventing spatter adhesion even in its original state, the function of preventing spatter adhesion can be further improved by mirror-polishing its surface with a buff or the like.
上記の段付金属円筒１と黒鉛ブツシユ４は、肉
薄先端部３に設けられた絞り嵌着部５を介して一
体に固着されている。この絞り嵌着部５の介設
は、予め黒鉛ブツシユ４の所定外周位置に帯状の
凹溝を形成しておき、該凹溝に合致する肉薄先端
部３の外面を圧搾して絞り込むことによつておこ
なわれる。 The above-mentioned stepped metal cylinder 1 and graphite bush 4 are fixed together via a throttle fitting part 5 provided at the thin end part 3. The insertion of the throttle fitting part 5 is achieved by forming a band-shaped groove in advance at a predetermined outer peripheral position of the graphite bushing 4, and squeezing the outer surface of the thin tip part 3 that matches the groove. It is carried out at
この考案の溶接用ノズルは上記の複合構造を有
するから、次のような実用価値の高い作用効果が
もたらされる。
Since the welding nozzle of this invention has the above-mentioned composite structure, the following effects of high practical value are brought about.
(1) 溶接時に発生するスパツタはアークスポツト
から放射状に飛散するため、主に溶接用ノズル
の先端から内面にかけて衝突する。また、付着
したスパツタの掻き落しはノズル外面よりも内
面の方が作業性が悪い。この考案ではスパツタ
が付着し易く、除去作業がしにくいノズル先端
から内面に亙る部分を黒鉛ブツシユ４により構
成しているから、スパツタの付着は有効に防止
でき、除去作業も簡単である。(1) Spatter generated during welding scatters radially from the arc spot, so it mainly collides from the tip of the welding nozzle to the inner surface. Further, it is more difficult to scrape off adhering spatter on the inner surface of the nozzle than on the outer surface. In this invention, since the part from the tip of the nozzle to the inner surface where spatter easily adheres and is difficult to remove is constituted by the graphite bush 4, the adhesion of spatter can be effectively prevented and removal work is easy.
(2) 靭性に乏しい黒鉛ブツシユ４の外面が段付金
属円筒１の肉薄先端部３で保護されているた
め、溶接作業時の外的衝撃によつてノズルが破
損する事態は起らない。また肉薄先端部３は、
蓄熱状態で大気に晒られる黒鉛ブツシユ外面の
酸化損耗を防止する保護機能も発揮する。(2) Since the outer surface of the graphite bush 4, which has poor toughness, is protected by the thin tip 3 of the stepped metal cylinder 1, the nozzle will not be damaged by external impact during welding work. In addition, the thin tip portion 3 is
It also provides a protective function that prevents oxidation damage on the outer surface of the graphite bushing, which is exposed to the atmosphere while storing heat.
(3) 段付金属円筒１と黒鉛ブツシユ４は絞り嵌着
部５により係止的に一体固着されているから、
連続あるいは反復使用に際しても熱膨張差その
他の原因による黒鉛ブツシユの弛緩抜け落ち現
象は生じない。そのうえ、絞り嵌着部５の介設
は、煩雑な加工作業を要することなく極めて簡
単におこなうことができる。(3) Since the stepped metal cylinder 1 and the graphite bush 4 are fixedly fixed together by the aperture fitting part 5,
Even during continuous or repeated use, the graphite bushing does not loosen or fall off due to differences in thermal expansion or other causes. Moreover, the insertion of the aperture fitting portion 5 can be performed extremely easily without requiring complicated machining operations.
(4) 以上の改善された性能付与効果により、自
動、半自動溶接を問わず長期間の連続あるいは
反復使用が保障される。したがつて、溶接作業
全体の生産性が著しく向上する。(4) Due to the above-mentioned improved performance imparting effect, long-term continuous or repeated use is guaranteed regardless of automatic or semi-automatic welding. Therefore, the productivity of the entire welding operation is significantly improved.
図は、この考案の溶接用ノズルを例示した一部
切欠縦断面図である。
１……段付金属円筒、２……基幹ネジ部、３…
…肉薄先端部、４……黒鉛ブツシユ、５……絞り
嵌着部。
The figure is a partially cutaway vertical sectional view illustrating the welding nozzle of this invention. 1...Stepped metal cylinder, 2...Basic screw part, 3...
...thin tip, 4...graphite bushing, 5...diaphragm fitting part.
Claims (1)
金属円筒１と前記肉薄先端部の内面に挿着した内
径が段付金属円筒１の肉厚部と同径でその先端部
分２〜４mmが円形状を呈して段付金属円筒１の外
径と合致する形状の黒鉛ブツシユ４とを絞り嵌着
部５を介して係合してなる構造の溶接ノズル。 A stepped metal cylinder 1 having a basic threaded portion 2 and a thin tip 3 is inserted into the inner surface of the thin tip.The inner diameter of the stepped metal cylinder 1 is the same diameter as the thick part of the stepped metal cylinder 1, and the tip portion is 2 to 4 mm circular. A welding nozzle having a structure in which a graphite bushing 4 whose shape matches the outer diameter of a stepped metal cylinder 1 is engaged via a throttle fitting part 5.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1984151166U JPH0237500Y2 (en) | 1984-10-08 | 1984-10-08 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1984151166U JPH0237500Y2 (en) | 1984-10-08 | 1984-10-08 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS6182780U JPS6182780U (en) | 1986-05-31 |
| JPH0237500Y2 true JPH0237500Y2 (en) | 1990-10-11 |
Family
ID=30709290
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1984151166U Expired JPH0237500Y2 (en) | 1984-10-08 | 1984-10-08 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0237500Y2 (en) |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5138304A (en) * | 1974-09-10 | 1976-03-31 | Chevron Res | Junkatsuyu no seizoho |
| JPS5442726B2 (en) * | 1976-10-06 | 1979-12-15 |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS511526U (en) * | 1974-06-24 | 1976-01-08 | ||
| JPS5442726U (en) * | 1977-09-01 | 1979-03-23 |
-
1984
- 1984-10-08 JP JP1984151166U patent/JPH0237500Y2/ja not_active Expired
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5138304A (en) * | 1974-09-10 | 1976-03-31 | Chevron Res | Junkatsuyu no seizoho |
| JPS5442726B2 (en) * | 1976-10-06 | 1979-12-15 |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS6182780U (en) | 1986-05-31 |
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