JP2010073379A - Cooling structure for electrode supporting arm - Google Patents

Cooling structure for electrode supporting arm Download PDF

Info

Publication number
JP2010073379A
JP2010073379A JP2008237268A JP2008237268A JP2010073379A JP 2010073379 A JP2010073379 A JP 2010073379A JP 2008237268 A JP2008237268 A JP 2008237268A JP 2008237268 A JP2008237268 A JP 2008237268A JP 2010073379 A JP2010073379 A JP 2010073379A
Authority
JP
Japan
Prior art keywords
electrode support
cooling water
support arm
portions
electrode
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.)
Granted
Application number
JP2008237268A
Other languages
Japanese (ja)
Other versions
JP4533986B2 (en
Inventor
Motoo Urayama
基郎 浦山
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
URAYAMA SEISAKUSHO KK
Original Assignee
URAYAMA SEISAKUSHO KK
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by URAYAMA SEISAKUSHO KK filed Critical URAYAMA SEISAKUSHO KK
Priority to JP2008237268A priority Critical patent/JP4533986B2/en
Publication of JP2010073379A publication Critical patent/JP2010073379A/en
Application granted granted Critical
Publication of JP4533986B2 publication Critical patent/JP4533986B2/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Images

Classifications

    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P10/00—Technologies related to metal processing
    • Y02P10/20—Recycling

Landscapes

  • Vertical, Hearth, Or Arc Furnaces (AREA)
  • Furnace Details (AREA)
  • Discharge Heating (AREA)
  • Refinement Of Pig-Iron, Manufacture Of Cast Iron, And Steel Manufacture Other Than In Revolving Furnaces (AREA)

Abstract

<P>PROBLEM TO BE SOLVED: To provide a simple cooling structure for an electrode supporting device. <P>SOLUTION: A body part 4 is formed in a square cylindrical shape with its upper and lower surface parts 4A, 4B and its right and left face parts 4C, 4D welded to each other. The upper an lower surface parts 4A, 4B use thicker plate materials than the right and left side face plate parts 4C, 4D. The plate materials for the upper and lower surface parts 4A, 4B have four cooling water passages 31 each in the upper and lower sides, as through-holes passing therethrough in the longitudinal direction. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

本発明は、製鋼用アーク炉などの電気炉において電極を垂直に把持したまま上下に昇降させるための水平の電極支持アームにおける冷却構造に関するものである。   The present invention relates to a cooling structure in a horizontal electrode support arm for moving up and down while holding an electrode vertically in an electric furnace such as an arc furnace for steelmaking.

電極支持装置は、一般に水平に設置される電極支持アームと、その先端に設けられる電極把持装置及びスプリングバック形の電極把握油圧シリンダとにより構成され、上記の電極支持アーム、電極把持装置及び電極把握油圧シリンダは水冷されており、これにより大電流の通過に伴う発熱及び電気炉からの幅射熱による影響を避けるようにしている（例えば、特許文献１参照）。   The electrode support device is generally composed of an electrode support arm that is installed horizontally, an electrode gripping device provided at the tip of the electrode support arm, and a spring back-type electrode gripping hydraulic cylinder, and the electrode support arm, electrode gripping device, and electrode gripping described above. The hydraulic cylinder is water-cooled, thereby avoiding the influence of heat generated by the passage of a large current and width radiation from the electric furnace (for example, see Patent Document 1).

上記のごとき装置において、電極支持アームの軽量化を図り、アーム自体に電流（例えば５０〜１００ｋＡ程度）が流れる導電アームとするため、これをアルミニウム合金等の軽金属で構成することが行われるようになっている。   In the apparatus as described above, in order to reduce the weight of the electrode support arm and to form a conductive arm in which a current (for example, about 50 to 100 kA) flows in the arm itself, this is made of a light metal such as an aluminum alloy. It has become.

そして、そのようなアームは、例えば図７及び図８に示すように、電極支持アームの本体部１０１は、溶接により接合される、四角筒形状の内筒１０２と外筒１０３とを有する二重筒構造とされ、アーム自体が高熱となるので、それを冷却するために、内筒１０２と外筒１０３との間の空間を、冷却水が流れる冷却水通路１０４としている。
特開平７−３２０８６２号公報（段落００１６及び図１） For example, as shown in FIGS. 7 and 8, such an arm includes a double-sided tube body 102 and an outer tube 103 in which a main body 101 of an electrode support arm is joined by welding. Since the arm structure itself has a high heat, the space between the inner cylinder 102 and the outer cylinder 103 is used as a cooling water passage 104 through which cooling water flows to cool the arm.
Japanese Patent Laid-Open No. 7-320862 (paragraph 0016 and FIG. 1)

前記アームの本体部は、冷却水を流す冷却水通路を形成するために二重筒構造としているので、構造が複雑になる。つまり、前記アームの本体部は断面が大きく、溶接により組み立てるので、組み立て作業も面倒である。   Since the main body of the arm has a double cylinder structure for forming a cooling water passage through which cooling water flows, the structure becomes complicated. That is, since the main body of the arm has a large cross section and is assembled by welding, the assembling work is troublesome.

この発明は、冷却構造が簡単である電極支持装置における冷却構造を提供することを目的とする。   An object of the present invention is to provide a cooling structure in an electrode support device having a simple cooling structure.

請求項１の発明は、先端部に電極把持装置を有しかつアルミニウム合金からなる電極支持アームの内部に、冷却水通路が設けられてなる電極支持装置における冷却構造において、前記電極支持アームは、溶接により接合される上下面部と左右側面部とを有する四角筒形状で、前記上下面部に前記冷却水通路が形成されていることを特徴とする。   The invention according to claim 1 is a cooling structure in an electrode support device having an electrode gripping device at a tip and an inside of an electrode support arm made of an aluminum alloy, wherein the electrode support arm includes: The cooling water passage is formed in the upper and lower surface portions in a rectangular tube shape having upper and lower surface portions and left and right side portions joined by welding.

このようにすれば、前記アームに流れる電流の自乗に比例して発熱量が変化するが、左右側面部に発生する熱は、空冷されると共に、アルミニウム合金は、熱伝導性が優れるので、上下面部に拡散して、冷却される。よって、二重筒構造（ウォータジャケット構造）とする必要がなく、上下面部に前記冷却水通路を形成するだけであるので、冷却構造が簡単になる。   In this way, the calorific value changes in proportion to the square of the current flowing through the arm, but the heat generated in the left and right side portions is air-cooled, and the aluminum alloy has excellent thermal conductivity. It diffuses to the surface and is cooled. Therefore, it is not necessary to have a double cylinder structure (water jacket structure), and only the cooling water passage is formed in the upper and lower surface portions, so that the cooling structure is simplified.

請求項２に記載のように、前記上下面部は、前記左右側面部よりも板厚が厚い板材で形成される上下面板部で、前記冷却水通路は、前記上下面板部を長手方向に貫通する複数個の貫通孔とすることができる。ここで、前記貫通孔は機械加工により設けられる。   According to a second aspect of the present invention, the upper and lower surface portions are upper and lower surface plate portions formed of a plate material thicker than the left and right side surface portions, and the cooling water passage penetrates the upper and lower surface plate portions in the longitudinal direction. A plurality of through holes can be formed. Here, the through hole is provided by machining.

このようにすれば、冷却水通路を流れる冷却水が、アームを四角筒とするための溶接部分に接触することがなくなり、溶接部分が冷却水通路に直接接触しているジャケット構造のように溶接部分の劣化を原因とする亀裂による水洩れの発生が回避される。   In this way, the cooling water flowing through the cooling water passage does not come into contact with the welded portion for making the arm into a square tube, and the welding is welded like a jacket structure in which the welding portion is in direct contact with the cooling water passage. Occurrence of water leakage due to cracks caused by deterioration of the part is avoided.

この場合、請求項３に記載のように、前記上下面板部及び左右側面板部を構成する板材は、それぞれ、厚さが４０ｍｍ〜８０ｍｍ、２５ｍｍ〜４５ｍｍであり、前記貫通孔は直径２０ｍｍ〜５０ｍｍとすることができる。   In this case, as described in claim 3, the plate materials constituting the upper and lower surface plate portions and the left and right side surface plate portions have thicknesses of 40 mm to 80 mm and 25 mm to 45 mm, respectively, and the through hole has a diameter of 20 mm to 50 mm. It can be.

このようにすれば、貫通孔を例えば４列配置とすることで、冷却に必要かつ十分な水量を流すことができる。   If it does in this way, the amount of water required and sufficient for cooling can be poured by arranging a through hole in 4 rows, for example.

本発明は、上下面部に冷却水通路を形成し、左右側面部を、空冷と上下面部への熱拡散とにて冷却するようにしているので、電極支持アームを二重筒構造とする必要がなくなり、前記アームにおける冷却構造が簡単になる。   In the present invention, the cooling water passages are formed in the upper and lower surface portions, and the left and right side portions are cooled by air cooling and heat diffusion to the upper and lower surface portions. Therefore, the electrode support arm needs to have a double cylinder structure. This eliminates the cooling structure in the arm.

以下、本発明の実施の形態を図面に沿って説明する。   Hereinafter, embodiments of the present invention will be described with reference to the drawings.

図１は本発明の一実施の形態にかかる電極支持装置における第１及び第２の電極支持アームの配置を示す平面図、図２は前記第２の電極支持アームの側面図、図３は前記第１の電極支持アームの側面図である。   FIG. 1 is a plan view showing the arrangement of first and second electrode support arms in an electrode support device according to an embodiment of the present invention, FIG. 2 is a side view of the second electrode support arm, and FIG. It is a side view of the 1st electrode support arm.

図１〜図３に示すように、第１の電極支持アーム１の両側に、２つの直線状の第２の電極支持アーム２，２が配置されている。これら電極支持アーム１，２は、アルミニウム合金製で、四角筒形状の本体部３，４を有する。その本体部３，４の後端の閉塞壁の後方には、電力ケーブル（図示せず）の接続部５，６が設けられ、アーム自体に電流（例えば５００００Ａ程度）が流れる導電アームとされる。   As shown in FIGS. 1 to 3, two linear second electrode support arms 2 and 2 are arranged on both sides of the first electrode support arm 1. These electrode support arms 1 and 2 are made of an aluminum alloy and have rectangular cylindrical body parts 3 and 4. Connection portions 5 and 6 of a power cable (not shown) are provided behind the blocking wall at the rear end of the main body portions 3 and 4 so that a current (for example, about 50000 A) flows through the arm itself. .

第１の電極支持アーム１の前端には、下方に向かって湾曲した湾曲部分７を有し、その湾曲部分７の前端に、第１の電極把持装置８を支持する支持部９が設けられている。また、第２の電極支持アーム２の前端部分は、平面視で外方に折れ曲がった屈曲部分１０を有し、この屈曲部分１０の前端に、第１の電極把持装置８よりも前方で中央よりに接近して配置されるように第２の電極把持装置１１を支持する支持部１２が連接されている。なお、電極把持装置８，１１には、第１の電極把持装置８について示すように、電極把持装置作動用の電極把握シリンダー１３が接続されている。   The front end of the first electrode support arm 1 has a curved portion 7 that curves downward, and a support portion 9 that supports the first electrode gripping device 8 is provided at the front end of the curved portion 7. Yes. The front end portion of the second electrode support arm 2 has a bent portion 10 bent outward in plan view, and the front end of the bent portion 10 is forward of the first electrode gripping device 8 and from the center. A support portion 12 that supports the second electrode gripping device 11 is connected so as to be disposed close to the head. The electrode gripping devices 8 and 11 are connected to an electrode gripping cylinder 13 for operating the electrode gripping device as shown for the first electrode gripping device 8.

各電極支持アーム１，２の本体部３，４は、図４及び図５に示すように、昇降可能に支持される支持架台２１，２２上に絶縁プレート２６を介して取り付けられ、第１の電極支持アーム１の本体部３が第２の電極支持アーム２の本体部４よりも上側に位置するように配置されている。   As shown in FIGS. 4 and 5, the body portions 3 and 4 of the electrode support arms 1 and 2 are attached to the support bases 21 and 22 supported so as to be movable up and down via an insulating plate 26. The main body 3 of the electrode support arm 1 is disposed above the main body 4 of the second electrode support arm 2.

第１の電極支持アーム１の本体部３と第２の電極支持アーム２の本体部４との、支持架台２１，２２に対する取付構造は実質的に同一であるので、第２の電極支持アーム２の本体部４の、支持架台２２に対する取付構造について説明する。   Since the mounting structure of the main body 3 of the first electrode support arm 1 and the main body 4 of the second electrode support arm 2 with respect to the support bases 21 and 22 is substantially the same, the second electrode support arm 2 The attachment structure of the main body 4 to the support frame 22 will be described.

図５に示すように、第２の電極支持アーム２の本体部４は、８本のねじ棒２３と、各ねじ棒２３に対して用いる４つのナット２４とによって、支持架台２２の上側に固定されている。   As shown in FIG. 5, the main body portion 4 of the second electrode support arm 2 is fixed to the upper side of the support frame 22 by eight screw rods 23 and four nuts 24 used for each screw rod 23. Has been.

具体的には、本体部４は、上下面板部４Ａ，４Ｂと、左右面板部４Ｃ，４Ｄとが、溶接により接合されて、四角筒形状とされている。そして、上側中空パイプ２５Ａが、上下面板部４Ａ，４Ｂを含めて本体部４を上下方向において貫通している。この上側中空パイプ２５Ａの上下端は上下面板部４Ａ，４Ｂに溶接により固定されている。また、支持架台２２にも、上側中空パイプ２５Ａに対応して下側中空パイプ２５Ｂが溶接により固定されている。   Specifically, the main body part 4 is formed in a rectangular tube shape by joining the upper and lower surface plate portions 4A and 4B and the left and right surface plate portions 4C and 4D by welding. And upper hollow pipe 25A has penetrated body part 4 in the up-and-down direction including upper and lower surface board parts 4A and 4B. The upper and lower ends of the upper hollow pipe 25A are fixed to the upper and lower plate portions 4A and 4B by welding. Further, the lower hollow pipe 25B is also fixed to the support frame 22 by welding corresponding to the upper hollow pipe 25A.

そして、上下端部にねじ部２３ａ，２３ｂを有するねじ棒２３が、本体部４と支持架台２２の中空パイプ２５Ａ，２５Ｂとを貫通して延び、ねじ部２３ａ，２３ｂにナット２４がそれぞれ２つずつ適用されて、本体部４と支持架台２２とが固定されている。この点についてさらに詳述すると、支持架台２２と本体部４との間には、ねじ棒２３が挿通される複数の開孔を有する絶縁プレート２６が設けられ、各ナット２３と支持架台２２や本体部４との間には絶縁ワッシャ２７が設けられ、ねじ棒２３の周囲には絶縁チューブ２８が設けられ、さらに、上側の２つのナット２３が設けられている部分は、絶縁キャップ２９にて覆われている。これにより、電流が流れる本体部４とその周囲との絶縁が図られている。   And the screw rod 23 which has the screw parts 23a and 23b in the upper and lower ends extends through the main body part 4 and the hollow pipes 25A and 25B of the support frame 22, and each of the screw parts 23a and 23b has two nuts 24. The main body 4 and the support base 22 are fixed by being applied one by one. More specifically, an insulating plate 26 having a plurality of apertures through which the screw rods 23 are inserted is provided between the support base 22 and the main body 4, and each nut 23, the support base 22 and the main body are provided. An insulating washer 27 is provided between the portion 4, an insulating tube 28 is provided around the screw rod 23, and a portion where the upper two nuts 23 are provided is covered with an insulating cap 29. It has been broken. Thereby, insulation between the main body portion 4 through which a current flows and its surroundings is achieved.

また、上下面板部４Ａ，４Ｂは左右側面板部４Ｃ，４Ｄよりも板厚が厚い板材で形成されている。上下面板部４Ａ，４Ｂとなる板材には、それを長手方向に貫通する貫通孔として、上側及び下側の冷却水通路３１がそれぞれ４つずつ形成されている。つまり、冷却水通路３１は、左右側面板部４Ｃ，４Ｄには形成されておらず、上下面部となる上下面板部４Ａ，４Ｂにのみ形成されている。この冷却水通路３１は、機械加工により形成されるが、中空パイプ２５Ａが設けられている位置を回避して、形成される。なお、上下面板部４Ａ，４Ｂ及び左右側面板部４Ｃ，４Ｄを構成する板材は、それぞれ、通常、厚さが４０ｍｍ〜８０ｍｍ、２５ｍｍ〜４５ｍｍの範囲で用いられ、前記貫通孔は直径２０ｍｍ〜５０ｍｍの範囲とされる。   The upper and lower plate portions 4A and 4B are formed of a plate material that is thicker than the left and right side plate portions 4C and 4D. In the plate material to be the upper and lower plate portions 4A and 4B, four upper and lower cooling water passages 31 are formed as through holes penetrating in the longitudinal direction. That is, the cooling water passage 31 is not formed in the left and right side surface plate portions 4C and 4D, but is formed only in the upper and lower surface plate portions 4A and 4B serving as the upper and lower surface portions. The cooling water passage 31 is formed by machining, but is formed avoiding the position where the hollow pipe 25A is provided. The plate members constituting the upper and lower plate portions 4A and 4B and the left and right side plate portions 4C and 4D are usually used in thicknesses of 40 mm to 80 mm and 25 mm to 45 mm, respectively, and the through hole has a diameter of 20 mm to 50 mm. It is considered as a range.

図６に示すように、本体部４の後端における閉塞壁後方の接続部の間であって上下に、冷却水出口部３２及び冷却水入口部３３がそれぞれ２つずつ設けられている。そして、一方の冷却水出口部３２には、左右一方の側の２つの上側冷却水通路３１からの冷却水が、他方の冷却水出口部３２には左右他方の側の２つの上側冷却水通路３１からの冷却水が、それぞれ流れ出てくるようになっている。また、一方の冷却水入口部３３からの冷却水は、左右一方の側の２つの下側冷却水通路３１に、他方の冷却水出口部３２からの冷却水は、左右他方の側の２つの下側冷却水通路３１にそれぞれ流れ込むようになっている。なお、冷却水通路３１と冷却水出口部３２及び冷却水入口部３３とは、上下面部４Ａ，４Ｂの幅方向に延びる連通路３４，３５にて連通されている。   As shown in FIG. 6, two cooling water outlet portions 32 and two cooling water inlet portions 33 are provided above and below the connecting portion behind the blocking wall at the rear end of the main body portion 4. Then, the cooling water from the two upper cooling water passages 31 on one of the left and right sides is provided in one cooling water outlet portion 32, and the two upper cooling water passages on the other left and right sides are provided in the other cooling water outlet portion 32. The cooling water from 31 flows out, respectively. Further, the cooling water from one cooling water inlet portion 33 is supplied to the two lower cooling water passages 31 on the left and right sides, and the cooling water from the other cooling water outlet portion 32 is supplied to the two left and right sides. Each flows into the lower cooling water passage 31. The cooling water passage 31, the cooling water outlet portion 32, and the cooling water inlet portion 33 communicate with each other through communication passages 34 and 35 extending in the width direction of the upper and lower surface portions 4A and 4B.

上記のように、左右側面板部４Ｃ，４Ｄには冷却水通路３１を形成せず、上下面部となる上下面板部４Ａ，４Ｂにのみ形成すれば、簡単な冷却構造で、アーム全体が冷却される。つまり、アーム２に流れる電流の自乗に比例してアーム２の発熱量が変化するが、左右側面板部４Ｃ，４Ｄに発生する熱の一部は、直接的に空冷される。それと共に、左右側面板部４Ｃ，４Ｄに発生する熱の残部は、アルミニウム合金は熱伝導性が優れるので、上下面板部４Ａ，４Ｂに拡散して、冷却される。冷却水通路３１を流れる冷却水は循環水として使用されるので、その温度は３５℃〜４０℃であり、電極支持アーム２は、上下面板部４Ａ，４Ｂ付近の温度が５０℃程度で、左右側面板部でも５５〜５６℃程度にしかならず、あまり問題とならないことが確認されている。   As described above, if the cooling water passage 31 is not formed in the left and right side plate portions 4C and 4D but only the upper and lower surface plate portions 4A and 4B which are the upper and lower surface portions, the entire arm is cooled with a simple cooling structure. The That is, although the amount of heat generated by the arm 2 changes in proportion to the square of the current flowing through the arm 2, some of the heat generated in the left and right side plate portions 4C and 4D is directly air-cooled. At the same time, the remaining heat generated in the left and right side plate portions 4C and 4D is cooled by being diffused into the upper and lower plate portions 4A and 4B because the aluminum alloy has excellent thermal conductivity. Since the cooling water flowing through the cooling water passage 31 is used as circulating water, the temperature thereof is 35 ° C. to 40 ° C., and the electrode support arm 2 has a temperature in the vicinity of the upper and lower plate portions 4A and 4B of about 50 ° C. It has been confirmed that the side plate portion is only about 55 to 56 ° C. and does not cause a problem.

本発明の一実施の形態にかかる電極支持装置における電極支持アームの配置を示す平面図である。It is a top view which shows arrangement | positioning of the electrode support arm in the electrode support apparatus concerning one embodiment of this invention. 前記第１の電極支持アームの側面図である。It is a side view of the first electrode support arm. 前記第２の電極支持アームの側面図である。It is a side view of the second electrode support arm. 図１のＡ−Ａ線における断面図である。It is sectional drawing in the AA of FIG. 図３のＢ−Ｂ線における断面図である。It is sectional drawing in the BB line of FIG. 図３のＣ−Ｃ線における断面図である。It is sectional drawing in CC line of FIG. 従来の電極支持アームの要部平面図である。It is a principal part top view of the conventional electrode support arm. 図７のＤ−Ｄ線における断面図である。It is sectional drawing in the DD line | wire of FIG.

符号の説明Explanation of symbols

１，２ 電極支持アーム
４ 本体部
４Ａ 上面板部
４Ｂ 下面板部
４Ｃ 側面板部
４Ｄ 側面板部
８，１１ 電極把持装置
３１ 冷却水通路 DESCRIPTION OF SYMBOLS 1, 2 Electrode support arm 4 Main-body part 4A Upper surface board part 4B Lower surface board part 4C Side surface plate part 4D Side surface plate part 8,11 Electrode holding device 31 Cooling water path

Claims (3)

先端部に電極把持装置を有しかつアルミニウム合金からなる電極支持アームの内部に、冷却水通路が設けられてなる電極支持アームにおける冷却構造において、
前記電極支持アームは、溶接により接合される上下面部と左右側面部とを有する四角筒形状で、前記上下面部に前記冷却水通路が形成されていることを特徴とする電極支持アームにおける冷却構造。 In the cooling structure of the electrode support arm having the electrode gripping device at the tip and the cooling water passage provided inside the electrode support arm made of aluminum alloy,
The cooling structure for an electrode support arm, wherein the electrode support arm has a rectangular tube shape having upper and lower surface portions and left and right side portions joined by welding, and the cooling water passage is formed in the upper and lower surface portions. 前記上下面部は、前記左右側面部よりも板厚が厚い板材で形成される上下面板部で、
前記冷却水通路は、前記上下面板部を長手方向に貫通する複数個の貫通孔であることを特徴とする請求項１記載の電極支持アームにおける冷却構造。 The upper and lower surface portions are upper and lower surface plate portions formed of a plate material thicker than the left and right side surface portions,
2. The cooling structure for an electrode support arm according to claim 1, wherein the cooling water passage is a plurality of through holes penetrating the upper and lower surface plate portions in the longitudinal direction. 前記上下面板部及び左右側面板部を構成する板材は、それぞれ、厚さが４０ｍｍ〜８０ｍｍ、２５ｍｍ〜４５ｍｍであり、
前記貫通孔は直径２０ｍｍ〜５０ｍｍであることを特徴とする請求項１記載の電極支持アームにおける冷却構造。 The plate members constituting the upper and lower surface plate portions and the left and right side surface plate portions have thicknesses of 40 mm to 80 mm and 25 mm to 45 mm, respectively.
The cooling structure for an electrode support arm according to claim 1, wherein the through hole has a diameter of 20 mm to 50 mm.
JP2008237268A 2008-09-17 2008-09-17 Cooling structure in electrode support arm Active JP4533986B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2008237268A JP4533986B2 (en) 2008-09-17 2008-09-17 Cooling structure in electrode support arm

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2008237268A JP4533986B2 (en) 2008-09-17 2008-09-17 Cooling structure in electrode support arm

Publications (2)

Publication Number Publication Date
JP2010073379A true JP2010073379A (en) 2010-04-02
JP4533986B2 JP4533986B2 (en) 2010-09-01

Family

ID=42204986

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2008237268A Active JP4533986B2 (en) 2008-09-17 2008-09-17 Cooling structure in electrode support arm

Country Status (1)

Country Link
JP (1) JP4533986B2 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2023231927A1 (en) * 2022-05-31 2023-12-07 隆基绿能科技股份有限公司 Electrode device, heater power supply structure, and furnace bottom structure of single crystal furnace

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103619088B (en) * 2013-12-02 2015-07-15 中冶东方工程技术有限公司 Manufacturing method of water-cooling protection screen for submerged arc furnace

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH06223963A (en) * 1992-10-20 1994-08-12 Mannesmann Ag Electrode supporting arm for electric arc furnace
JPH0817572A (en) * 1994-06-30 1996-01-19 Nissei Ltd Electrode support arm for arc furnace

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH06223963A (en) * 1992-10-20 1994-08-12 Mannesmann Ag Electrode supporting arm for electric arc furnace
JPH0817572A (en) * 1994-06-30 1996-01-19 Nissei Ltd Electrode support arm for arc furnace

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2023231927A1 (en) * 2022-05-31 2023-12-07 隆基绿能科技股份有限公司 Electrode device, heater power supply structure, and furnace bottom structure of single crystal furnace

Also Published As

Publication number Publication date
JP4533986B2 (en) 2010-09-01

Similar Documents

Publication Publication Date Title
JP6139022B2 (en) Gas welding torch with diffuser
JP5573696B2 (en) Conductive path
US20110272383A1 (en) Welding Tool
CN102430827B (en) Vacuum brazing method of plasma cutting electrode
JP4533986B2 (en) Cooling structure in electrode support arm
US20140097174A1 (en) Heat treatment furnace and method of replacing heater of same
JP2008504646A (en) LCD backlight with improved cooling function
JPH06223963A (en) Electrode supporting arm for electric arc furnace
US20150332879A1 (en) Vacuum switching apparatus, and electrode extension assembly and associated assembly method therefor
KR101360523B1 (en) Welding electrode and welding apparatus having thereof
JP3655308B2 (en) Electric melting device
JP2015176975A (en) semiconductor device
JP3721717B2 (en) Semiconductor element cooling structure
JPS58181484A (en) Tig arc welding torch
CN213578743U (en) Heating device of small vacuum furnace
KR20140046290A (en) Overlay welding device using radiation
CN102683160B (en) Discharge lamp
CN218034352U (en) Durable strong vacuum consumable electrode arc furnace
JP2019209375A (en) Contact tip
CN220397867U (en) Heating core of hot air gun
CN221047506U (en) Heating assembly
CN209439576U (en) Welding/cutter device
CN210609755U (en) Finned electric heating tube
KR101304756B1 (en) Welding Torch
KR20080004667U (en) A Cartridge Heater Assembly

Legal Events

Date Code Title Description
A521 Request for written amendment filed

Free format text: JAPANESE INTERMEDIATE CODE: A523

Effective date: 20100108

TRDD Decision of grant or rejection written
A01 Written decision to grant a patent or to grant a registration (utility model)

Free format text: JAPANESE INTERMEDIATE CODE: A01

Effective date: 20100413

A01 Written decision to grant a patent or to grant a registration (utility model)

Free format text: JAPANESE INTERMEDIATE CODE: A01

A711 Notification of change in applicant

Free format text: JAPANESE INTERMEDIATE CODE: A711

Effective date: 20100506

A61 First payment of annual fees (during grant procedure)

Free format text: JAPANESE INTERMEDIATE CODE: A61

Effective date: 20100507

A521 Request for written amendment filed

Free format text: JAPANESE INTERMEDIATE CODE: A821

Effective date: 20100506

FPAY Renewal fee payment (event date is renewal date of database)

Free format text: PAYMENT UNTIL: 20130625

Year of fee payment: 3

R150 Certificate of patent or registration of utility model

Free format text: JAPANESE INTERMEDIATE CODE: R150

Ref document number: 4533986

Country of ref document: JP

Free format text: JAPANESE INTERMEDIATE CODE: R150

R250 Receipt of annual fees

Free format text: JAPANESE INTERMEDIATE CODE: R250

R250 Receipt of annual fees

Free format text: JAPANESE INTERMEDIATE CODE: R250

R250 Receipt of annual fees

Free format text: JAPANESE INTERMEDIATE CODE: R250

R250 Receipt of annual fees

Free format text: JAPANESE INTERMEDIATE CODE: R250

R250 Receipt of annual fees

Free format text: JAPANESE INTERMEDIATE CODE: R250

R250 Receipt of annual fees

Free format text: JAPANESE INTERMEDIATE CODE: R250

R250 Receipt of annual fees

Free format text: JAPANESE INTERMEDIATE CODE: R250

R250 Receipt of annual fees

Free format text: JAPANESE INTERMEDIATE CODE: R250

R250 Receipt of annual fees

Free format text: JAPANESE INTERMEDIATE CODE: R250

R250 Receipt of annual fees

Free format text: JAPANESE INTERMEDIATE CODE: R250

S531 Written request for registration of change of domicile

Free format text: JAPANESE INTERMEDIATE CODE: R313531

R350 Written notification of registration of transfer

Free format text: JAPANESE INTERMEDIATE CODE: R350

R250 Receipt of annual fees

Free format text: JAPANESE INTERMEDIATE CODE: R250

R250 Receipt of annual fees

Free format text: JAPANESE INTERMEDIATE CODE: R250