JPS6135350Y2 - - Google Patents
Info
- Publication number
- JPS6135350Y2 JPS6135350Y2 JP14959181U JP14959181U JPS6135350Y2 JP S6135350 Y2 JPS6135350 Y2 JP S6135350Y2 JP 14959181 U JP14959181 U JP 14959181U JP 14959181 U JP14959181 U JP 14959181U JP S6135350 Y2 JPS6135350 Y2 JP S6135350Y2
- Authority
- JP
- Japan
- Prior art keywords
- electrode rod
- carbon electrode
- gouging
- blasting
- groove
- 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
- 229910052799 carbon Inorganic materials 0.000 claims description 36
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 35
- 238000005422 blasting Methods 0.000 claims description 16
- 229910052751 metal Inorganic materials 0.000 claims description 12
- 239000002184 metal Substances 0.000 claims description 12
- 239000000945 filler Substances 0.000 claims description 4
- 238000005520 cutting process Methods 0.000 description 6
- 238000003466 welding Methods 0.000 description 6
- 238000007747 plating Methods 0.000 description 5
- 238000000034 method Methods 0.000 description 4
- 229910000831 Steel Inorganic materials 0.000 description 3
- 238000002347 injection Methods 0.000 description 3
- 239000007924 injection Substances 0.000 description 3
- 239000010959 steel Substances 0.000 description 3
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 2
- 239000004568 cement Substances 0.000 description 2
- 229910010293 ceramic material Inorganic materials 0.000 description 2
- 235000021190 leftovers Nutrition 0.000 description 2
- 239000007769 metal material Substances 0.000 description 2
- 230000002093 peripheral effect Effects 0.000 description 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 1
- 230000001154 acute effect Effects 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 150000001721 carbon Chemical class 0.000 description 1
- 238000005266 casting Methods 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000010891 electric arc Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
Landscapes
- Arc Welding In General (AREA)
- Electrical Discharge Machining, Electrochemical Machining, And Combined Machining (AREA)
Description
本考案は、ガウジング及びブラスチング用電極
棒に関するものであり、特に本考案は、一つのカ
ーボン電極棒と他の同型のカーボン電極棒とを接
続して使用することのできる接続式ガウジング及
びブラスチング用カーボン電極棒に関するもので
ある。
ガウジング及びブラスチング作業は、第1図に
示す如く圧縮空気の噴射孔1を有する保持具2に
よつて挾持される電極棒3と金属の被加工面4と
の間の放電によつて金属の被加工面4を溶融させ
噴射孔1より噴射された圧縮空気をもつて溶融し
た金属を吹き飛ばして削溝したり開先したり整調
する作業である。上記削溝を施す場合、削溝後の
断面形状はその後の溶接される際に溶融金属の溶
融不十分等の欠陥を生じさせないためには、U字
状ないし円弧状になつている事が望ましい。また
整調の場合、整調後の面はなめらかで美しい面で
ある事が望ましい。
従来、この種のカーボン電極棒としては第2図
に示す如く円棒状であつて、5mmφ〜11mmφの直
径のものをガウジング用カーボン電極棒と称し、
主に削溝用として用いられていて削溝後の溝をU
字状の断面形状にするために、第2図に示す如く
実公昭39−5726号に係る電極棒であつて、その軸
芯部に全体の10〜60%の面積をもつ空洞を有する
円筒状のもの、あるいは、実公昭49−29624号に
係る電極棒であつて、その軸芯線を中心とし炭素
棒断面積全体の1〜10%の断面積の空洞を設けて
成る8角形状のもの、または実公昭49−26820号
に係る電極棒であつて、その軸芯線を中心とし炭
素棒横断面積の5〜20%の断面積を有する空洞を
設けるとともに、その側壁の軸芯線方向には炭素
棒外周の5〜2%の幅を有する円筒状のものなど
がある。これらのガウジング用カーボン電極棒
は、いずれもU字状ないし円弧状の溝は得られる
が、作業中に電極棒3がアーク放電により消耗短
縮するので短縮した長さだけ保持具2を金属の被
加工面4に接近させることが必要となる。しかし
ながら、放電部は3000〜4000℃に及ぶ高熱に達し
ているので、保持具ならびに作業者の保護のため
放電部と保持具とは通常少なくとも3cm位は離隔
させておく必要があり、ガウジング及びブラスチ
ング作業方法が開発された初期の頃は、前記の約
3cmと保持具の挾持代の約2cmを合算した約5cm
程度に短かくなつた電極棒は焚残しとして捨てら
れていた。
さらに、厚物の鋼板の加工に際して従来は、深
い溝が要求されるため同じ溝を何度もガウジング
作業して溝を深くする必要があり、そのためにガ
ウジング後の手仕上げに通常のガウジング作業時
間の4倍〜5倍という長い時間を要する等の欠点
があつた。
他方、この種のカーボン電極棒としては第2図
に示す如く円棒状であつて、13mmφ〜25.4mmφの
直径のものをブラスチング用カーボン電極棒と称
し、主に鋳物等の整調用として用いている。この
円棒状カーボン電極棒は、作業の進行に伴つて先
端が尖頭状や刃物状となり、そのため整調後の金
属の被加工面は波状形となるとともにアークの安
定が得られにくい等の欠点があつた。
さらに、このカーボン電極棒で削溝した場合の
溝はカーボン電極棒の先端が尖頭状または刃物状
となるため溝深さが大きくなるほど鋭角となる。
従つて断面形状はいわゆるV字型となり、その後
の溶接に際し溶融金属の溶着が不十分になるなど
の欠点を生ずるものであり、さらにその上、前記
ガウジング用カーボン電極棒と同様、電極棒の焚
残しは捨てられるという欠点があつた。
本出願人は、これらのことに鑑み、先にガウジ
ング及びブラスチング用カーボン電極棒が有する
欠点を除去し改善した接続式のガウジング及びブ
ラスチング用カーボン電極棒に係る考案を提案し
て実公昭43−23705号でもつて、出願公告された
第4図に示す如き電極棒に係る実用新案登録を得
たが、それは円棒状のものであり、焚残しの欠点
は解決したものの、特に厚物の鋼板の加工時にお
ける上述のような欠点ならびに整調後の金属の被
加工面が波状形になる欠点については、未だ解決
を見るに至つていない。
そこで、本考案者らは、さきに鋭意研究を重ね
た結果、厚物の鋼板の加工に際し削溝後の溝の断
面形状をU字状ないし円弧状にし、またアークも
安定し、かつ整調時には、なめらかで美しい面を
得ることのできるガウジング及びブラスチング用
電極棒を提供することを工夫した。
すなわち、一端部は凸形部を、またその他端に
前記凸形部と嵌合し得る凹形部を設けたカーボン
電極棒において、軸芯線を中心として中空の貫通
孔を設け、凸形部には充填物を挿入し、かつ前記
嵌合部の一部に外被鍍金膜と連続する嵌合鍍金膜
を設けることによつて、厚物の鋼板の加工時にU
字状ないし円弧状の溝が得られ、他方整調時には
なめらかで美しい面を得ることができるようにな
つた。
以下、本考案の電極棒を図面に基づいて具体的
に説明する。第5図において、3は中空の貫通孔
5を有する円筒状の電極棒であつて、凸形部6は
切頭円錐台形、凹形部7はこれに相応する切頭円
錐台筒であつて、たとえば1゜〜12゜位のテーパ
ーを有している。金属鍍金膜8は、凸形部6の根
元部分9と凹形部7の周縁端部分10まで電極棒
3の外周表面と連続して施されている。たとえ
ば、金属鍍金膜8は銅、アルミニウム等である。
充填物11は、凸形部の強度を増すために挿入さ
れており、たとえば、セラミツク材料又は金属材
料等の各種の材料からなる。
通常、ガウジング作業の場合、第6図に示す削
溝底面のルート半径12が溶接の際大きな影響を
与える。
すなわち、ルート半径12が小さいと溶接部に
クラツクが発生する。このため、ガウジング作業
を行なう溶接業界ではクラツクを発生させないた
めに、グラインダー等によりルート半径12を大
きくしながら削溝面を手でU字形に仕上げている
現状にある。
前記の削溝底面のルート半径12は、カーボン
電極棒3の中空の貫通孔5の断面積により異なる
が、その断面積の範囲はカーボン電極棒断面に対
して一定の限度がある。すなわち、ルート半径1
2の大なるU字状ないし円弧状の削溝を得るに
は、中空の貫通孔5の断面積を大にする必要があ
る。しかしながら、上記断面積がある程度大きく
なるとカーボンの消耗速度のみ増大してルート半
径は変らず、カーボン電極棒3の肉厚が薄くなる
ばかりでなく、それ以上に凸形部6の肉厚が薄く
なるためこの部分の機械的強度が弱くなり、一つ
の電極棒3の凹形部7と他の同型の電極棒3の凸
形部6とが接続される際に折損し、かつ製造技術
面にも幾多の困難な問題が生じる。このために、
カーボン電極棒3の機械的強度より弱い凸形部6
の中空の貫通孔5に、たとえば凸形部6の端面か
ら凸形部6の根元部分9までの長さより長い部分
にセラミツク材料、たとえばアルミナセメント、
あるいは鉄粉などの金属材料等を充填物として挿
入する事によつて、凸形部6の機械的強度が増し
て接続時の折損事故がなくなり、かつガウジング
作業中アーク面からのアーク炎が中空の貫通孔5
を通じて保持具5を持つている当該作業者側の方
向に逆流し作業者が火傷を負うことを完全に防止
することができるようになつた。
なお、本考案の電極棒において、凸形部6また
は凹形部7に電極棒の軸芯線方向と平行に電極棒
直径よりも長い長さの割溝を設けることもでき
る。
次に、本考案の実施例について説明する。
実施例 1
直径8mmφの円棒状接続式カーボン電極棒の軸
芯線を中心として2.6mmφの中空の貫通孔を設
け、これに凸形部の長さ10mmと同長の分だけ凸形
部にアルミナセメントを挿入した本考案の接続式
カーボン電極棒を作成し、これとを比較するため
に、従来の接続式電極棒を準備して自動ガウジン
グ装置を使用してガウジング速度600mm/分でガ
ウジング作業を行ない、被加工面の幅、溝深さ、
及びルート半径を測定したところ、第1表に示す
ような結果を得た。
The present invention relates to an electrode rod for gouging and blasting, and in particular, the present invention relates to a connected type carbon electrode rod for gouging and blasting that can be used by connecting one carbon electrode rod to another carbon electrode rod of the same type. This relates to electrode rods. As shown in FIG. 1, the gouging and blasting operations are carried out by electric discharge between an electrode rod 3 held by a holder 2 having a compressed air injection hole 1 and a surface 4 of the metal to be machined. This is an operation in which the machined surface 4 is melted and the molten metal is blown off using compressed air injected from the injection hole 1 to cut grooves, bevel, and adjust. When performing the above-mentioned cutting groove, it is desirable that the cross-sectional shape after cutting the groove be U-shaped or arc-shaped in order to avoid defects such as insufficient melting of the molten metal during subsequent welding. . In addition, in the case of pacing, it is desirable that the surface after pacing be smooth and beautiful. Conventionally, carbon electrode rods of this type have a circular rod shape and a diameter of 5 mm to 11 mm as shown in Fig. 2, and are called carbon electrode rods for gouging.
It is mainly used for cutting grooves, and the groove after cutting is
In order to obtain a letter-shaped cross-sectional shape, the electrode rod according to Utility Model Publication No. 39-5726 was made into a cylindrical shape having a cavity with an area of 10 to 60% of the whole in the axial center, as shown in Fig. 2. or the electrode rod according to Utility Model Publication No. 49-29624, which is octagonal in shape and has a cavity with a cross-sectional area of 1 to 10% of the entire cross-sectional area of the carbon rod centered on its axis; Or the electrode rod according to Utility Model Publication No. 49-26820, which is provided with a cavity having a cross-sectional area of 5 to 20% of the cross-sectional area of the carbon rod centered around its axis, and in which the carbon rod is arranged in the direction of the axis of the side wall. There are cylindrical ones having a width of 5 to 2% of the outer circumference. With these carbon electrode rods for gouging, U-shaped or arc-shaped grooves can be obtained, but the electrode rod 3 is worn out due to arc discharge during work, so the holder 2 is covered with metal by the shortened length. It is necessary to approach the processing surface 4. However, since the discharge part reaches a high temperature of 3,000 to 4,000℃, it is necessary to keep the discharge part and the holder at least 3 cm apart to protect the holder and the worker. In the early days when the working method was developed, it was about 5 cm, which was the sum of the above 3 cm and the 2 cm of the clamping allowance of the holder.
The electrode rod, which had become so short, was thrown away as leftovers from the fire. Furthermore, in the past, when processing thick steel plates, deep grooves were required, so it was necessary to gouge the same groove many times to make the groove deeper. It has drawbacks such as requiring a long time of 4 to 5 times as long. On the other hand, as shown in Figure 2, this type of carbon electrode rod is circular and has a diameter of 13 mmφ to 25.4 mmφ, which is called a carbon electrode rod for blasting, and is mainly used for adjusting castings, etc. . As the work progresses, the tip of this cylindrical carbon electrode rod becomes pointed or blade-like, resulting in a wavy surface on the metal surface after adjustment and difficulty in achieving arc stability. It was hot. Further, the groove formed by using this carbon electrode rod has a pointed or blade-like tip, so that the groove becomes more acute as the depth of the groove increases.
Therefore, the cross-sectional shape becomes a so-called V-shape, which causes disadvantages such as insufficient welding of molten metal during subsequent welding.Furthermore, like the carbon electrode rod for gouging, the electrode rod is difficult to ignite. The disadvantage was that the leftovers were thrown away. In view of the above, the present applicant has previously proposed a device related to a connected type carbon electrode rod for gouging and blasting that eliminates and improves the drawbacks of carbon electrode rods for gouging and blasting, and has published Utility Model Publication No. 43-23705. No. 4 obtained a utility model registration for the electrode rod as shown in Fig. 4, which was published as an application, but it was in the shape of a circular rod, and although the drawback of leaving burnt residue was solved, it was particularly difficult to process thick steel plates. No solution has yet been found to the above-mentioned drawbacks in the process and the drawback that the processed surface of the metal becomes wavy after adjustment. Therefore, as a result of extensive research, the inventors of the present invention made the cross-sectional shape of the groove after cutting into a U-shape or an arc when processing a thick steel plate, and the arc was also stable and during adjustment. The present invention has been devised to provide an electrode rod for gouging and blasting that can obtain a smooth and beautiful surface. That is, in a carbon electrode rod that has a convex portion at one end and a concave portion that can fit into the convex portion at the other end, a hollow through hole is provided around the axis, and the convex portion is provided with a hollow through hole. By inserting a filler and providing a fitting plating film that is continuous with the outer coating plating film in a part of the fitting part, U
It has become possible to obtain grooves in the shape of letters or arcs, and on the other hand, it has become possible to obtain smooth and beautiful surfaces during adjustment. Hereinafter, the electrode rod of the present invention will be specifically explained based on the drawings. In FIG. 5, reference numeral 3 denotes a cylindrical electrode rod having a hollow through hole 5, the convex portion 6 has a truncated conical shape, and the concave portion 7 has a corresponding truncated conical cylinder. , for example, has a taper of about 1° to 12°. The metal plating film 8 is applied continuously to the outer circumferential surface of the electrode rod 3 up to the root portion 9 of the convex portion 6 and the peripheral edge portion 10 of the concave portion 7 . For example, the metal plating film 8 is made of copper, aluminum, or the like.
The filling 11 is inserted to increase the strength of the convex portion and is made of various materials, such as ceramic material or metal material. Normally, in the case of gouging work, the root radius 12 of the groove bottom shown in FIG. 6 has a great influence on welding. That is, if the root radius 12 is small, cracks will occur in the weld. For this reason, in the welding industry where gouging is performed, in order to prevent cracks from occurring, the groove surface is currently finished into a U-shape by hand while enlarging the root radius 12 using a grinder or the like. The root radius 12 of the groove bottom surface varies depending on the cross-sectional area of the hollow through-hole 5 of the carbon electrode rod 3, but the range of the cross-sectional area has a certain limit with respect to the cross-section of the carbon electrode rod. That is, the root radius 1
In order to obtain the large U-shaped or arc-shaped cutting groove of 2, it is necessary to increase the cross-sectional area of the hollow through hole 5. However, when the cross-sectional area increases to a certain extent, only the consumption rate of carbon increases, the root radius remains unchanged, and not only does the thickness of the carbon electrode rod 3 become thinner, but the thickness of the convex portion 6 becomes even thinner. Therefore, the mechanical strength of this part is weakened, and it may break when the concave part 7 of one electrode bar 3 is connected to the convex part 6 of another electrode bar 3 of the same type, and it may also cause problems in terms of manufacturing technology. Many difficult problems arise. For this,
Convex portion 6 whose mechanical strength is weaker than that of the carbon electrode rod 3
A ceramic material, such as alumina cement, is used in the hollow through hole 5, for example, in a portion longer than the length from the end surface of the convex portion 6 to the root portion 9 of the convex portion 6.
Alternatively, by inserting a metal material such as iron powder as a filler, the mechanical strength of the convex part 6 is increased and breakage accidents during connection are eliminated, and the arc flame from the arc surface during gouging work is hollow. through hole 5
It is now possible to completely prevent the worker from getting burnt due to backflow in the direction of the worker holding the holder 5 through the holder. In addition, in the electrode rod of the present invention, a groove having a length longer than the diameter of the electrode rod may be provided in the convex portion 6 or the concave portion 7 in parallel to the axial direction of the electrode rod. Next, embodiments of the present invention will be described. Example 1 A hollow through hole with a diameter of 2.6 mm is provided around the axis of a cylindrical connected carbon electrode rod with a diameter of 8 mm. In order to compare with this, we prepared a conventional connected carbon electrode rod and performed gouging work using an automatic gouging device at a gouging speed of 600 mm/min. , width of workpiece surface, groove depth,
When the root radius was measured, the results shown in Table 1 were obtained.
【表】
実施例 2
直径16mmφの従来の円棒状接続式カーボン電極
棒の軸芯線を中心として4.2mmφの中空の貫通孔
を設け、これに凸形部の長さ20mmと同長の分だけ
凸形部にアルミナセメントを挿入した本考案の接
続式カーボン電極棒を作成し、これとを比較する
ために、従来通常の接続式電極棒を準備して自動
ガウジング装置を使用してガウジング速度600
mm/分でガウジング作業を行ない、被加工面の
幅、溝深さ、及びルート半径を測定したところ第
2表に示すような結果を得た。[Table] Example 2 A hollow through hole with a diameter of 4.2 mm is provided centered on the axis of a conventional cylindrical connected carbon electrode rod with a diameter of 16 mm, and a convex part of the same length as the 20 mm length of the convex part is formed in this hole. We created a connected carbon electrode rod of the present invention with alumina cement inserted into the shape, and in order to compare it with this, we prepared a conventional connected electrode rod and used an automatic gouging device to increase the gouging speed to 600.
Gouging was performed at a rate of mm/min, and the width, groove depth, and root radius of the processed surface were measured, and the results shown in Table 2 were obtained.
【表】
なお、充填物はガウジング及びブラスチング作
業の進行に伴つて、アーク熱により溶融して圧縮
空気で吹き飛ばされた。また、その際の溝の形状
はU字形でかつなめらかなものであつた。
実施例 3
前記の実施例2と同様の円棒状接続式カーボン
電極棒を作成し、これらを使用してアーク電流
1000A〜1200Aでブラスチング作業を行なつたと
ころ、第7図のAに示すような断面が波状形の面
となるが、前記実施例2の本考案の電極棒を作成
し、これと同一の条件下でブラスチング作業を行
なつたところ、第7図のBに示すような滑らかで
かつきれいな面を得ることができた。
以上の如く、本考案の接続式カーボン電極棒に
よれば、ガウジング作業の場合においてはルート
半径の大きいU字状ないし円弧状の溝が得られる
ので、厚物の鋼板の施行作業の際、1回のガウジ
ングで仕上げが済み手仕上げ時間を大幅に短縮で
きるだけでなく、ブラスチング作業の場合におい
ては、なめらかで美しい面が得られる。さらに本
考案によれば、一つの電極棒の凹形部と他の同型
の電極棒凸形部とを接続させてガウジング及びブ
ラスチング作業を行なうため、焚残しなく連続的
に使用でき、また接続の際には折損することなく
接続できて、かつアーク炎の逆流により火傷を負
う危険もなくなり、さらには溶接業界の溶接継手
の品質ならびに作業性の向上に大きく寄与する事
となり、実用上きわめて有用なるものである。[Table] As the gouging and blasting operations progressed, the filler was melted by arc heat and blown away by compressed air. Further, the shape of the groove at that time was U-shaped and smooth. Example 3 Connected cylindrical carbon electrode rods similar to those in Example 2 were created, and these were used to control the arc current.
When blasting was carried out at 1000A to 1200A, the cross section became a wavy surface as shown in A in FIG. When we performed a blasting operation below, we were able to obtain a smooth and clean surface as shown in Figure 7B. As described above, according to the connected carbon electrode rod of the present invention, a U-shaped or arc-shaped groove with a large root radius can be obtained in the case of gouging work. Finishing can be done in just one gouging process, which not only greatly reduces hand finishing time, but also provides a smooth and beautiful surface in the case of blasting work. Furthermore, according to the present invention, since gouging and blasting work is performed by connecting the concave part of one electrode rod to the convex part of another electrode rod of the same type, it can be used continuously without leaving any burning residue. In some cases, the connection can be made without breakage, and there is no risk of getting burned due to the backflow of arc flame.Furthermore, it will greatly contribute to improving the quality and workability of welded joints in the welding industry, making it extremely useful in practice. It is something.
第1図は、ガウジング及びブラスチング作業の
説明図、第2図及び第3図は従来のカーボン電極
棒の横断面図、第4図は従来の接続式カーボン電
極棒の縦断面図、第5図は本考案の実施例におけ
る接続式カーボン電極棒の縦断面図、第6図はガ
ウジング施行された被加工面の縦断面図、第7図
はブラスチング施行された被加工面の斜視図であ
る。
1……圧縮空気の噴射孔、2……保持具、3…
…電極棒、4……金属の被加工面、5……中空の
貫通孔、6……凸形部、7……凹形部、8……金
属鍍金膜、9……根元部分、10……周縁端部
分、11……充填物、12……ルート半径。
Figure 1 is an explanatory diagram of gouging and blasting work, Figures 2 and 3 are cross-sectional views of a conventional carbon electrode rod, Figure 4 is a longitudinal cross-sectional view of a conventional connected carbon electrode rod, and Figure 5 6 is a longitudinal sectional view of a connected carbon electrode rod according to an embodiment of the present invention, FIG. 6 is a longitudinal sectional view of a processed surface subjected to gouging, and FIG. 7 is a perspective view of a processed surface subjected to blasting. 1... Compressed air injection hole, 2... Holder, 3...
... Electrode rod, 4 ... Metal surface to be processed, 5 ... Hollow through hole, 6 ... Convex portion, 7 ... Concave portion, 8 ... Metal plating film, 9 ... Root portion, 10 ... ...Peripheral end portion, 11...Filling, 12...Root radius.
Claims (1)
を他端部は凹形をなしており、一つのカーボン電
極棒の凹形部に他の同型のカーボン電極棒の凸形
部を嵌合接続させることができ、凸形部の外表面
及び凹形部の外表面の少なくとも一部は電極棒本
体の外周表面と連続して金属鍍金されているガウ
ジング及びブラスチング用カーボン電極棒におい
て、前記カーボン電極棒の軸芯線を中心として中
空の貫通孔を設け、少なくとも一部に充填物を挿
入して成るガウジング及びブラスチング用カーボ
ン電極棒。 It is a connectable carbon electrode rod, one end is convex and the other end is concave, and the convex portion of another carbon electrode rod of the same type is fitted into the concave portion of one carbon electrode rod. In the carbon electrode rod for gouging and blasting, the outer surface of the convex portion and the outer surface of the concave portion are plated with metal continuously with the outer circumferential surface of the electrode rod main body. A carbon electrode rod for gouging and blasting, comprising a hollow through hole centered around the axis of the electrode rod, and a filler inserted into at least a portion of the hole.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP14959181U JPS5857390U (en) | 1981-10-07 | 1981-10-07 | Carbon electrode rod for gouging and blasting |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP14959181U JPS5857390U (en) | 1981-10-07 | 1981-10-07 | Carbon electrode rod for gouging and blasting |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS5857390U JPS5857390U (en) | 1983-04-18 |
JPS6135350Y2 true JPS6135350Y2 (en) | 1986-10-14 |
Family
ID=29942358
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP14959181U Granted JPS5857390U (en) | 1981-10-07 | 1981-10-07 | Carbon electrode rod for gouging and blasting |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5857390U (en) |
-
1981
- 1981-10-07 JP JP14959181U patent/JPS5857390U/en active Granted
Also Published As
Publication number | Publication date |
---|---|
JPS5857390U (en) | 1983-04-18 |
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