JPS6160276A - Welding torch nozzle - Google Patents
Welding torch nozzleInfo
- Publication number
- JPS6160276A JPS6160276A JP59179217A JP17921784A JPS6160276A JP S6160276 A JPS6160276 A JP S6160276A JP 59179217 A JP59179217 A JP 59179217A JP 17921784 A JP17921784 A JP 17921784A JP S6160276 A JPS6160276 A JP S6160276A
- Authority
- JP
- Japan
- Prior art keywords
- nozzle
- carbon
- welding torch
- carbon fiber
- spatter
- 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
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
- B23K9/24—Features related to electrodes
- B23K9/28—Supporting devices for electrodes
- B23K9/29—Supporting devices adapted for making use of shielding means
- B23K9/291—Supporting devices adapted for making use of shielding means the shielding means being a gas
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B35/00—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
- C04B35/71—Ceramic products containing macroscopic reinforcing agents
- C04B35/78—Ceramic products containing macroscopic reinforcing agents containing non-metallic materials
- C04B35/80—Fibres, filaments, whiskers, platelets, or the like
- C04B35/83—Carbon fibres in a carbon matrix
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Ceramic Engineering (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Mechanical Engineering (AREA)
- Composite Materials (AREA)
- Physics & Mathematics (AREA)
- Manufacturing & Machinery (AREA)
- Plasma & Fusion (AREA)
- Materials Engineering (AREA)
- Structural Engineering (AREA)
- Organic Chemistry (AREA)
- Ceramic Products (AREA)
- Arc Welding In General (AREA)
Abstract
Description
【発明の詳細な説明】
〔産業上の利用分野〕
本発明は、金属の溶接作業に用いられる溶接トーチノズ
ルに関する。DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a welding torch nozzle used in metal welding operations.
溶接トーチノズルは、不活性ガスアーク溶接をおこなう
際トーチ先端に取付けてガスシールド機能をもたらすた
めの付稿部品で、従来、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。ところが、この種メタル
系ノズルは溶接時に飛散するスパッターが付着し易い材
質上の欠点がある。ノズル面にスパッターが付着累積す
る現象は、ガスシールド効果を損ねるばかりでなくアー
クの安定性および溶接ワイヤーの円滑な送り出しを阻害
する結果を招くことから、短時間内に頻繁な掻き落し作
業をしなければならなし。このため、近年発展の目覚ま
しい自動溶接分野においても生産性を低下させる大きな
理由となっている。A welding torch nozzle is an attached part that is attached to the tip of a torch to provide a gas shield function when performing inert gas arc welding, and conventionally metal nozzles made of copper or iron have been widely used. However, this type of metal nozzle has a disadvantage in that the material is susceptible to adhesion of spatter during welding. Accumulation of spatter on the nozzle surface not only impairs the gas shielding effect, but also hinders arc stability and smooth feeding of the welding wire. Must have. This is a major reason for lowering productivity even in the field of automatic welding, which has seen remarkable progress in recent years.
この現象を避けるため、ノズル面にスパッターの付着を
防止するための薬剤を塗布する方法が実用化されている
が、十分な効果は得られていない。In order to avoid this phenomenon, a method of applying a chemical to the nozzle surface to prevent adhesion of spatter has been put into practical use, but this method has not been sufficiently effective.
近時、ノズル材質としてカーボンが注目されている。カ
ーボン材ト優れた自己潤滑性と金属に濡れにくい個有特
性を有しているため、スパッターの付着を防止する材質
機能を本質的に備えている。Carbon has recently been attracting attention as a nozzle material. Carbon material has excellent self-lubricating properties and the unique property of not getting wet with metal, so it inherently has the material function of preventing spatter adhesion.
特開昭５８−２２１６８０号では、特定の物理的性質を
もつグラファイト素材により構成された溶接ノズルおよ
びチップを提案している。JP-A-58-221680 proposes a welding nozzle and tip constructed from a graphite material with specific physical properties.
しかしながら、カーボン材は金属に比べて材質強度が著
るしく低いｉ点があり、このため溶接作業時の機械的あ
るいは熱的な衝撃によって破損を起す問題点がある。However, carbon materials have a point i where their material strength is significantly lower than that of metals, and this poses the problem of causing damage due to mechanical or thermal impact during welding operations.
本発明は、上記した衝撃破損の発生を防止し、その使用
寿命を大巾に改善したカーボン系の溶接トーチノズルを
提供するものである。The present invention provides a carbon-based welding torch nozzle that prevents the above-mentioned impact damage and greatly improves its service life.
本発明の溶接トーチノズルは、炭素繊維をマトリックス
結合材とともに硬化成形して得られる炭素繊維強化炭素
材（以下、［Ｃ７０材−１という。）から構成される。The welding torch nozzle of the present invention is made of a carbon fiber-reinforced carbon material (hereinafter referred to as "C70 material-1") obtained by hardening and molding carbon fibers together with a matrix binder.
強化材となる炭素繊維は、織布、フェルト、トウまたは
短縁紐状に切断したチョツプドファイバーの形態で用い
られ、これをフェノール系、７ラン系のような炭化性の
高い液状の熱硬化性樹脂プレポリマーあるいはタールピ
ッチからなるマトリックス結合材と複合化したのち硬化
成形する。複合化には混合、含浸、塗付などの方法が採
られるが、本目的に最も好適な手段は炭素繊維のチョツ
プドファイバーをマトリックス結合材に分散混合して硬
化成形する方法である。この複合化手段は簡便であるう
えに、モールドを吟味することにより容易にノズル形状
に成形できる利点がある。硬化成形体は、不活性雰囲気
下で１０００〜１２００℃の温度に焼成してマトリック
ス結合材を炭化し、必要に応じ更に２８００〜１５００
０℃の高温度斌で黒鉛化処理してＣ／ Ｃ材に転化する
。Ｃ／ Ｃ材は、マトリックス結合材と同一物質を含浸
・炭化するか、ＣＶＤ法を用いて熱分解カーボンを沈着
させるような方法によって材質組織の緻密化を図ること
ができる。The carbon fiber used as a reinforcing material is used in the form of woven fabric, felt, tow, or chopped fiber cut into short edge strings, and is heated to a highly carbonizable liquid such as phenolic or 7 run type. It is composited with a matrix binder consisting of a curable resin prepolymer or tar pitch, and then hardened and molded. Methods such as mixing, impregnation, and coating can be used to form a composite, but the most suitable method for this purpose is a method in which chopped carbon fibers are dispersed and mixed in a matrix binder and then hardened and molded. This composite means is simple and has the advantage that it can be easily molded into a nozzle shape by carefully examining the mold. The cured molded body is fired at a temperature of 1000 to 1200°C in an inert atmosphere to carbonize the matrix binder, and further heated to a temperature of 2800 to 1500°C as necessary.
It is converted into C/C material by graphitization treatment at a high temperature of 0℃. The C/C material can be made to have a dense material structure by impregnating and carbonizing the same substance as the matrix binding material, or by depositing pyrolytic carbon using the CVD method.
このようにして得られたＣ／Ｃ１は、所定の形状寸法に
加工して溶接トーチノズルとする。The thus obtained C/C1 is processed into a predetermined shape and size to form a welding torch nozzle.
上記により形成されたＣ ／ Ｃ材の溶接トーチノズル
は、カーボン組繊骨格が炭素繊維で強化された構造を有
するからカーボン単味のノズルに比べて強度が大巾に増
大する。また、材質そのものはカーボン實であるためス
パッターの付着は有効に防止される。とくに樹脂系のマ
トリックス結合材を用いる場合には、組織が級密で表面
が平滑なガラス状カーボンに転化するので、スパッター
に対する付着防止機能は一層向上する。The C/C material welding torch nozzle formed as described above has a structure in which the carbon composite skeleton is reinforced with carbon fibers, so the strength is greatly increased compared to a nozzle made of only carbon. Furthermore, since the material itself is carbon, adhesion of spatter can be effectively prevented. In particular, when a resin-based matrix binder is used, the structure is converted into glass-like carbon having a dense structure and a smooth surface, so that the adhesion prevention function against spatter is further improved.
（１）マトリックス結合材としてフラン樹脂プレポリマ
ーを用い、その９０部に高強度炭素繊組〔東邦ヘスロン
−製、ｌベスファイトＨＴ Ａ’）のチョツプドファイ
バー（長さ１冨冨）を１０部加えて十分に分散するまで
混合した。混合物を円筒型モールドに充填し加圧成形し
たのち硬化した。ついで成形体を不活性雰囲気下に１２
００℃の温度で焼成しマトリックス樹脂を炭化した。得
られた円筒状Ｃ／Ｃ材を細部加工して溶接トーチノズル
を形成した（発明例１）。(1) A furan resin prepolymer is used as a matrix binding material, and 90 parts of it are 10 parts chopped fibers (length: 1 Tomi) of high-strength carbon fiber assembly (manufactured by Toho Heslon, lBesphite HT A'). 1 part and mixed until well dispersed. The mixture was filled into a cylindrical mold, pressure-molded, and then cured. The molded body was then placed under an inert atmosphere for 12 hours.
The matrix resin was carbonized by firing at a temperature of 00°C. The obtained cylindrical C/C material was subjected to detailed processing to form a welding torch nozzle (Invention Example 1).
本ノズル材質の強度特性は、曲げ強さｔ２．ＩＫｆ／−
１圧縮強度２０．９縁／−１弾性率４．５ ｔｏｎ／−
であった。The strength characteristics of this nozzle material are bending strength t2. IKf/-
1 compressive strength 20.9 edges/-1 elastic modulus 4.5 ton/-
Met.
（２） 上記（１）で焼成炭化したものを黒鉛化炉に
移し、２８００℃に処理したのち細部加工して黒鉛化Ｃ
／Ｃ材の溶接トーチノズルを得た（発明例２）。(2) Transfer the sintered carbonized product in (1) above to a graphitization furnace, treat it at 2800℃, and then perform detailed processing to graphitize C.
A welding torch nozzle made of /C material was obtained (Invention Example 2).
この場合の材質強度特性は、曲げ強さ１８．２Ｋｆ／−
１圧縮強度２２．５〜／−１弾性率１０．２ ｔｏｎ
／ＩＩＪであった。The material strength characteristics in this case are bending strength 18.2Kf/-
1 Compressive strength 22.5~/-1 Elastic modulus 10.2 ton
/IIJ.
（３） 高強度炭素繊維〔東邦ベスロン■製ｌベスフ
ァイトＨＴＡ＃）のトウを引き揃えてモールド内に設置
し、これに同量の溶融ピッチを熱圧含浸してブロック状
の一方向性成形体を得た。成形体を（１）と同条件で焼
成炭化し、これをプロパンガスにより１０００℃でＣＶ
Ｄ処理したのち２８００℃で黒鉛化処理した。ついで、
黒鉛化Ｃ／Ｃブロック材をノズル形状に加工して溶接ト
ーチノズルを形成した（発明例５）。(3) Tows of high-strength carbon fiber [Besphite HTA# manufactured by Toho Beslon ■] are aligned and installed in a mold, and the same amount of molten pitch is impregnated with hot pressure to form a block-like unidirectional mold. I got a body. The compact was fired and carbonized under the same conditions as in (1), and then CVD was carried out at 1000°C with propane gas.
After D treatment, graphitization treatment was performed at 2800°C. Then,
A welding torch nozzle was formed by processing a graphitized C/C block material into a nozzle shape (Invention Example 5).
本ノズルの材質強度特性拡、曲げ強さ５ｔ、２Ｋｆ／−
１圧縮強度５８．８ｈ／＊１弾性率２１．４ ｔｏｎ／
ｓ＋Ｊであった。Expanded material strength characteristics of this nozzle, bending strength 5t, 2Kf/-
1 Compressive strength 58.8h/*1 Elastic modulus 21.4 ton/
It was s+J.
（４） 曲げ強さ６．９Ｋｏ／ｍＪ、圧縮強度’ １
．８Ｋｆ／ｗＪ、弾性率２．１ ｔｏｎ／−の材質強度
特性を有する高密度黒鉛材を加工してカーボン単味系の
溶接トーチノズルを形成した（比較例１）。(4) Bending strength 6.9Ko/mJ, compressive strength '1
．． A high-density graphite material having material strength characteristics of 8 Kf/wJ and an elastic modulus of 2.1 ton/- was processed to form a monocarbon welding torch nozzle (Comparative Example 1).
（５） 曲は強さ２．８ ｆｉｇ ／ −１圧縮強度
５．２ Ｋｇ ／、Ｊ、弾性率１．８ ｔｏｎ／ＮＪの
材質強度特性をもつ通常の黒鉛材を加工してカーボン単
味系の溶接トーチノズルを形成した（比較例２）。(5) The song is made of a single carbon material by processing ordinary graphite material with material strength characteristics of strength 2.8 fig/-1 compressive strength 5.2 Kg/, J, and modulus of elasticity 1.8 ton/NJ. A welding torch nozzle was formed (Comparative Example 2).
上記５種類の溶接トーチノズルを溶接機にセットし、５
００Ａ、８０Ｖの条件で４５分間連続運転したのち１５
分間休止する作業を１０時間に亘って反復した。１０時
間ごとにノズルを堆り祉ずしてスパッターの付着状況（
同時にスパッター除去を実施）ならびにノズルの破損状
況を観察しながら、４回のテス）（１０時間×４）をお
こなった。Set the above five types of welding torch nozzles on the welding machine, and
15 after continuous operation for 45 minutes under the conditions of 00A and 80V.
The work was repeated over a period of 10 hours with a pause of 1 minute. Check spatter adhesion by cleaning the nozzle every 10 hours (
At the same time, spatter was removed) and the nozzle was inspected for damage, and four tests (10 hours x 4) were conducted.
各１０個のノズルにつめてテストした結果を、一括して
下表に示した。The results of testing each 10 nozzles are shown in the table below.
本発明によるＣ／Ｃ材溶接トーチノズル（発明例１−３
）は、長時間の連続使用によっても効果的々スパッター
の付着防止機能を有するうえに、高密度黒鉛ノズル（比
較例１）に比ベノズル破損の度合が著るしく減少する。C/C material welding torch nozzle according to the present invention (Invention example 1-3
) has a function of effectively preventing adhesion of spatter even when used continuously for a long time, and the degree of nozzle damage is significantly reduced compared to the high-density graphite nozzle (Comparative Example 1).
とくにノズル本体の亀裂１割損などの現象は、全く認め
られなかった。In particular, phenomena such as cracks in the nozzle body and 10% loss were not observed at all.
このように本発明のＣ／Ｃ材溶接トーチノズルは、カー
ボン材個有のスパッター付着防止と繊維複合化作用に基
づく優れｆＣ衝撃破損防止の両性能を併有するから、該
用途に要求される特性要素を満足してその作業性ならび
に部材耐久寿命が著るしく改善される効果がもたらされ
る。As described above, the C/C material welding torch nozzle of the present invention has both the spatter adhesion prevention performance unique to carbon materials and the excellent fC impact damage prevention performance based on the fiber composite action, so it meets the characteristic elements required for the application. By satisfying the above requirements, the workability and durability of the parts are significantly improved.
Claims (1)
のち炭化処理して得られる炭素繊維強化炭素材から構成
された溶接トーチノズル。A welding torch nozzle made of carbon fiber-reinforced carbon material obtained by hardening and molding carbon fibers with a matrix binder and then carbonizing them.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP59179217A JPS6160276A (en) | 1984-08-30 | 1984-08-30 | Welding torch nozzle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP59179217A JPS6160276A (en) | 1984-08-30 | 1984-08-30 | Welding torch nozzle |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS6160276A true JPS6160276A (en) | 1986-03-27 |
Family
ID=16061982
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP59179217A Pending JPS6160276A (en) | 1984-08-30 | 1984-08-30 | Welding torch nozzle |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6160276A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2006054384A (en) * | 2004-08-16 | 2006-02-23 | Nissan Diesel Motor Co Ltd | Manufacturing method of electric double-layer capacitor |
| WO2006087887A1 (en) * | 2005-02-15 | 2006-08-24 | Fuji Jukogyo Kabushiki Kaisha | Gas nozzle for arc welding |
-
1984
- 1984-08-30 JP JP59179217A patent/JPS6160276A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2006054384A (en) * | 2004-08-16 | 2006-02-23 | Nissan Diesel Motor Co Ltd | Manufacturing method of electric double-layer capacitor |
| JP4500620B2 (en) * | 2004-08-16 | 2010-07-14 | Ｕｄトラックス株式会社 | Manufacturing method of electric double layer capacitor |
| WO2006087887A1 (en) * | 2005-02-15 | 2006-08-24 | Fuji Jukogyo Kabushiki Kaisha | Gas nozzle for arc welding |
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