JPH03282188A - Tapping tube for electric furnace - Google Patents

Tapping tube for electric furnace

Info

Publication number
JPH03282188A
JPH03282188A JP8150590A JP8150590A JPH03282188A JP H03282188 A JPH03282188 A JP H03282188A JP 8150590 A JP8150590 A JP 8150590A JP 8150590 A JP8150590 A JP 8150590A JP H03282188 A JPH03282188 A JP H03282188A
Authority
JP
Japan
Prior art keywords
tapping tube
electric furnace
tapping
tube
integrated
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
JP8150590A
Other languages
Japanese (ja)
Other versions
JPH0684871B2 (en
Inventor
Kozo Kanamaru
金丸 公三
Tomio Watanabe
渡辺 富男
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.)
Shinagawa Refractories Co Ltd
Original Assignee
Shinagawa Refractories Co Ltd
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 Shinagawa Refractories Co Ltd filed Critical Shinagawa Refractories Co Ltd
Priority to JP8150590A priority Critical patent/JPH0684871B2/en
Publication of JPH03282188A publication Critical patent/JPH03282188A/en
Publication of JPH0684871B2 publication Critical patent/JPH0684871B2/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

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  • Vertical, Hearth, Or Arc Furnaces (AREA)
  • Furnace Charging Or Discharging (AREA)

Abstract

PURPOSE:To obtain a tapping tube for an electric furnace, which is prevented from the invasion of ground metal or bridging of refractory sand and prominent in applicability, by a method wherein the tapping tube for the electric furnace is made in an integrated molded form from the inflow side to the outflow side of molten metal so that the tapping tube for the electric furnace is permitted to be constituted of an integrated tapping tube from the upper end to the lower end of the tapping hole. CONSTITUTION:A tapping tube 1 is made by an integrated molded form from the inflow side 2 to the outflow side 3 of molten metal so as to be permitted to be constituted of an integrated tapping tube from the lower end to the upper end of a tapping hole. In this case, the tapping tube 1 is provided with a configuration that a traditional tapping tube is integrated with a terminal block so far whereby the tapping tube is constituted of an integrated molded form.

Description

【発明の詳細な説明】 [産業上の利用分野] 本発明は電気炉タップホールに装着される電気炉タッピ
ングチューブに関する。
DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to an electric furnace tapping tube installed in an electric furnace taphole.

[従来の技術] 電気炉のタップホール部分の構成の一例を342図に示
す。電気炉の炉底部分に上下方向に延在するサポートブ
ロック及びタッピングチューブを挿入する開口11が穿
設されており、定形のサポートブロック12が開口11
内局面に配設されている。この間口11の中央部分にタ
ッピングチューブ13が配置され、タッピングチューブ
13とサポートブロック12との間に充填材14が充填
されている。タッピングチューブ13の下側にはターミ
ナルブロック15がタッピングチューブ13と同軸的に
配置されている。このターミナルブロック15は適宜の
本鈴機構(図示せず)を介して電気炉本体(図示せず)
側に支持されている。
[Prior Art] An example of the configuration of a taphole portion of an electric furnace is shown in Fig. 342. An opening 11 for inserting a vertically extending support block and a tapping tube is bored in the bottom of the electric furnace, and a regular-shaped support block 12 is inserted into the opening 11.
It is placed on the inner surface. A tapping tube 13 is arranged in the center of this frontage 11, and a filling material 14 is filled between the tapping tube 13 and the support block 12. A terminal block 15 is arranged coaxially with the tapping tube 13 below the tapping tube 13. This terminal block 15 is connected to the electric furnace main body (not shown) via an appropriate main bell mechanism (not shown).
supported on the side.

電気炉内にて鋼を溶解するときには、ターミナルブロッ
ク15の下側にタップホール開閉機構の蓋状カバー16
を当て、タッピングチューブ13内にオリビンサンド等
の耐火砂17を充填してタップホール18を塞いでおく
。溶湯を流出させるときには、蓋状カバー16を外すこ
とによって、耐火砂1フを流出させタップホール18を
開孔させる。
When melting steel in an electric furnace, a lid-like cover 16 for a taphole opening/closing mechanism is installed on the lower side of the terminal block 15.
The tapping tube 13 is filled with refractory sand 17 such as olivine sand to close the tap hole 18. When draining the molten metal, the lid-like cover 16 is removed to allow the refractory sand 1f to flow out and open the tap hole 18.

従来、第2図の如くタッピングチューブ13は4〜5段
程度に分れるか、又は一体物とされている。タッピング
チューブ13とターミナルブロック15とは別体である
0通常の場合、タッピングチューブ13は溶鋼に対し耐
食性に優れるMg0−C(マグネシアカーボン)質とさ
れ、ターミナルブロック15は溶鋼が付着しにくく、鋼
が「つらら」状に垂れ下らないAJ220s −C(ア
ルミナカーボン)質とされている。即ち、出湯最終段階
においてターミナルブロック15に溶湯が「つらら」状
に付着すると、タップホール開閉蓋が閉じなくなるとい
う不具合が生じる。このため、ターミナルブロック15
には「つらら」状に鋼が付着し難いAJ1203−C買
を採用する。
Conventionally, the tapping tube 13 has been divided into about 4 to 5 stages as shown in FIG. 2, or has been made into one piece. The tapping tube 13 and the terminal block 15 are separate bodies. Normally, the tapping tube 13 is made of Mg0-C (magnesia carbon), which has excellent corrosion resistance against molten steel, and the terminal block 15 is made of Mg0-C (magnesia carbon), which has excellent corrosion resistance against molten steel. It is said to be made of AJ220s-C (alumina carbon) that does not sag in an ``icicle'' shape. That is, if the molten metal adheres to the terminal block 15 in the form of "icicles" in the final stage of tapping, a problem arises in that the taphole opening/closing lid cannot be closed. For this reason, terminal block 15
For this purpose, AJ1203-C is used because it is difficult for steel to adhere in the form of icicles.

なお、A IL20 s −C買はMg0−C質に比較
して鋼が付着し難い。
In addition, steel is less likely to adhere to AIL20s-C material compared to Mg0-C material.

[発明が解決しようとする課題] 上記従来の構造にあっては、 ■ ターミナルブロック15とタッピングチューブ13
とが分割されているため両者間の目地部に目地切れによ
り地金差しが発生する。地金差しは、タッピングチュー
ブ13が数段に分割されている場合においては、その分
割部分の目地部でも発生する。
[Problems to be solved by the invention] In the above conventional structure, ■ the terminal block 15 and the tapping tube 13
Since the two parts are separated, metal gaps occur at the joints between the two parts due to joint breaks. In the case where the tapping tube 13 is divided into several stages, metal insertion also occurs at the joints of the divided parts.

■ オリビンサンド等の耐火砂17が上記目地のために
ブリッジを形成し易い、即ち出湯時に自然に開口させる
ことが出来ないことがある。
(2) The refractory sand 17 such as olivine sand tends to form bridges due to the above-mentioned joints, that is, it may not be possible to open them naturally when tapping the water.

■ タッピングチューブ13の交換に際しては、重いレ
ンガを狭い場所で施工せざるを得す、作業が容易ではな
い。
- When replacing the tapping tube 13, heavy bricks must be installed in a narrow space, which is not easy.

即ち、タッピングチューブ13は、長期使用により侵食
を受けて損傷するため、ある程度の損傷を受けた時点(
通常は肉厚が掻となった時点)で交換する。この場合、
従来の構造では交換作業が容易ではない。
That is, the tapping tube 13 is eroded and damaged by long-term use, so when it is damaged to some extent (
Usually, it should be replaced when the wall becomes thick. in this case,
With the conventional structure, replacement work is not easy.

本発明は上記従来の問題点を解決し地金差しや耐火砂の
ブリッジ化を防止する電気炉タッピングチューブであっ
て、しかも施工性にも優れる電気炉タッピングチューブ
を提供することを目的とする。
SUMMARY OF THE INVENTION An object of the present invention is to provide an electric furnace tapping tube which solves the above-mentioned conventional problems and prevents bridging of metal inserts and refractory sand, and which also has excellent workability.

[i1!題を解決するための手段] 本発明の電気炉タッピングチューブは、電気炉のタップ
ホールに装着される電気炉タッピングチューブにおいて
、タップホールの上端から下端まで一体のタッピングチ
ューブにて構成しうるように溶湯の流入側から流出側ま
で一体の成形体となっており、かつこの流出側の部分は
鋼の難付着性の耐火材にて構成されていることを特徴と
する。
[i1! [Means for Solving the Problem] The electric furnace tapping tube of the present invention is configured such that an electric furnace tapping tube installed in a tap hole of an electric furnace can be configured with an integral tapping tube from the upper end to the lower end of the tap hole. It is characterized in that it is an integral molded body from the inflow side to the outflow side of the molten metal, and the outflow side portion is made of a refractory material that does not easily adhere to steel.

[作用] 本発明の電気炉タッピングチューブは、タップホールの
上端から下端まで一体のタッピングチューブにて構成し
つるように溶湯の流入側から流出側まで一体の成形体と
なフているため、タップホール内周面に目地部が存在し
ない、このため地金差しや耐火砂のブリッジ化が生起す
る恐れがない。
[Function] The electric furnace tapping tube of the present invention is composed of an integral tapping tube from the upper end to the lower end of the tap hole, and is an integral molded body from the inflow side to the outflow side of the molten metal, so that the tap There are no joints on the inner peripheral surface of the hole, so there is no risk of metal insertion or refractory sand bridging.

しかも、タッピングチューブの流出側の部分は鋼の難付
着性の耐火材にて構成されているため、流出側において
溶湯がツララ状に付着することもない。
Moreover, since the outflow side portion of the tapping tube is made of a refractory material that does not easily adhere to steel, the molten metal does not adhere in an icicle-like manner on the outflow side.

このような本発明の電気炉タッピングチューブは、一体
物であるためホイスト等により吊り下げ施工することに
より容易かつ効率的に施工することができる。
Since the electric furnace tapping tube of the present invention is a one-piece product, it can be easily and efficiently constructed by suspending it from a hoist or the like.

[実施例] 以下に図面を参照して本発明の電気炉タッピングチュー
ブを具体的に説明する。
[Example] The electric furnace tapping tube of the present invention will be specifically described below with reference to the drawings.

第1図は本発明の電気炉タッピングチューブの一実施例
を示す断面図である。第3図はその損傷状況を示す断面
図である。
FIG. 1 is a sectional view showing an embodiment of the electric furnace tapping tube of the present invention. FIG. 3 is a sectional view showing the damage state.

図示の如く、本実施例のタッピングチューブ1は、タッ
プホールの下端から上端まで一体のタッピングチューブ
にて構成しうるように、溶湯の流入側2から流出側3ま
で一体の成形体となっている。即ち、本実施例のタッピ
ングチューブ1は第2図に示す従来のタッピングチュー
ブ13とターミナルブロック15とを一体とした形状の
ものでありて、一体物の成形体として構成されている。
As shown in the figure, the tapping tube 1 of this embodiment is an integral molded body from the inflow side 2 to the outflow side 3 of the molten metal so that the tapping tube can be formed as a single unit from the lower end to the upper end of the tap hole. . That is, the tapping tube 1 of this embodiment has a shape in which the conventional tapping tube 13 shown in FIG. 2 and the terminal block 15 are integrated, and is constructed as an integral molded body.

本実施例においては、タッピングチューブ1の下部IA
、即ち、従来のターミナルブロックに相当する部分は、
鋼難付看性のAl1203−C質とされている。また、
その他の部分のうち、内層部分及び上部は高グレードの
Mg0−C貫とされており、外層部分1Cは低グレード
のMg0−C7とされている。
In this embodiment, the lower IA of the tapping tube 1
, that is, the part corresponding to the conventional terminal block is
It is said to be made of Al1203-C quality, which is difficult to maintain. Also,
Among the other parts, the inner layer part and the upper part are made of high grade Mg0-C through, and the outer layer part 1C is made of low grade Mg0-C7.

即ち、下部IAは溶湯がつらら状に付着することがない
ようにA 120 s −C質等の鋼難付着性の耐火物
で構成する。この場合、下部IAのみを、AiL203
−C質とする。
That is, the lower IA is made of a refractory material that does not easily adhere to steel, such as A120s-C, so that molten metal does not adhere in the form of icicles. In this case, only the lower IA is connected to the AiL203
-C quality.

また、下部IA以外の部分は比較的安価なMg0−C買
とするが、この場合、内層及び上部IBを高グレードの
Mg0−C買、外層ICを低グレードのMg0−C質と
して、低グレードのMg0−C質の部分を設けることに
より、コストダウンを図る。
In addition, parts other than the lower IA are made of relatively inexpensive Mg0-C, but in this case, the inner layer and upper IB are made of high-grade Mg0-C, and the outer layer IC is made of low-grade Mg0-C. By providing the Mg0-C quality part, the cost is reduced.

即ち、本発明のタッピングチューブ1を長期使用した場
合のタッピングチューブ1の損傷状況を示す第3図より
明らかなように、タッピングチューブ1の損傷は、流入
口2側や内周面で著しい、このため、内層と上部IBを
高グレードで耐久性の高いMg0−C質で構成する。
That is, as is clear from FIG. 3, which shows the state of damage to the tapping tube 1 when the tapping tube 1 of the present invention is used for a long period of time, the damage to the tapping tube 1 is significant on the inlet 2 side and on the inner peripheral surface. Therefore, the inner layer and the upper IB are made of high grade and highly durable Mg0-C material.

なお、通常の場合、タッピングチューブ1は、その肉厚
の鍔程度が損耗した時点で交換するため、この高グレー
ドのMg0−C買で構成する部分を、タッピングチュー
ブ1の肉厚の局より若干厚い範囲とするのが好ましい。
In addition, in normal cases, the tapping tube 1 is replaced when its wall thickness is worn out, so the part made of high-grade Mg0-C is slightly thicker than the wall thickness of the tapping tube 1. A thick range is preferred.

このようなタッピングチューブは、CIP(コールドア
イソスタチックプレス)法で、所定の部分に所定の耐火
物粉末を配して成形することにより、容易に所望部分を
所望の材質で構成した一体物の成形体として製造するこ
とができる。
This type of tapping tube can be easily made into a one-piece body with desired parts made of desired materials by applying a specified refractory powder to specified parts and forming the tube using the CIP (cold isostatic pressing) method. It can be manufactured as a molded body.

しかして、このような一体物のタッピングチューブ1は
、その交換に際しては、ホイスト等により吊り下げ施工
することにより容易かつ効率的に施工することができる
Therefore, such an integrated tapping tube 1 can be replaced easily and efficiently by hanging it from a hoist or the like.

[発明の効果] 以上詳述した通り、本発明の電気炉タッピングチューブ
は、目地部のない一体物であるため、地金差し、耐火砂
のブリッジ形成の問題がない上に、施工性も極めて良好
で容易かつ効率的に施工することができる。
[Effects of the Invention] As detailed above, since the electric furnace tapping tube of the present invention is a one-piece product with no joints, there is no problem of metal inserts or bridge formation of refractory sand, and the workability is extremely high. Good quality, easy and efficient construction.

【図面の簡単な説明】[Brief explanation of the drawing]

第1図は本発明の電気炉タッピングチューブの一実施例
を示す断面図、第2図は従来例を示す断面図、第3図は
本発明の電気炉タッピングチューブの損傷状況を示す断
面図である。 1・・・タッピングチューブ、 2・・・流入側、     3・・・流出側。
Fig. 1 is a sectional view showing an embodiment of the electric furnace tapping tube of the present invention, Fig. 2 is a sectional view showing a conventional example, and Fig. 3 is a sectional view showing damage to the electric furnace tapping tube of the present invention. be. 1...Tapping tube, 2...Inflow side, 3...Outflow side.

Claims (1)

【特許請求の範囲】 電気炉のタップホールに装着される電気炉タッピングチ
ューブにおいて、 タップホールの下端から上端まで一体のタッピングチュ
ーブにて構成しうるように溶湯の流入側から流出側まで
一体の成形体となっており、かつこの流出側の部分は鋼
の難付着性の耐火材にて構成されていることを特徴とす
る電気炉タッピングチューブ。
[Claims] In an electric furnace tapping tube installed in a taphole of an electric furnace, the tapping tube is integrally molded from the inflow side to the outflow side of the molten metal so that the tapping tube can be formed in one piece from the bottom end to the top end of the taphole. An electric furnace tapping tube characterized in that the outflow side part is made of a refractory material that does not easily adhere to steel.
JP8150590A 1990-03-29 1990-03-29 Electric furnace tapping tube Expired - Lifetime JPH0684871B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP8150590A JPH0684871B2 (en) 1990-03-29 1990-03-29 Electric furnace tapping tube

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP8150590A JPH0684871B2 (en) 1990-03-29 1990-03-29 Electric furnace tapping tube

Publications (2)

Publication Number Publication Date
JPH03282188A true JPH03282188A (en) 1991-12-12
JPH0684871B2 JPH0684871B2 (en) 1994-10-26

Family

ID=13748218

Family Applications (1)

Application Number Title Priority Date Filing Date
JP8150590A Expired - Lifetime JPH0684871B2 (en) 1990-03-29 1990-03-29 Electric furnace tapping tube

Country Status (1)

Country Link
JP (1) JPH0684871B2 (en)

Also Published As

Publication number Publication date
JPH0684871B2 (en) 1994-10-26

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