JPH0623556Y2 - Electroslag remelting furnace - Google Patents
Electroslag remelting furnaceInfo
- Publication number
- JPH0623556Y2 JPH0623556Y2 JP1989018164U JP1816489U JPH0623556Y2 JP H0623556 Y2 JPH0623556 Y2 JP H0623556Y2 JP 1989018164 U JP1989018164 U JP 1989018164U JP 1816489 U JP1816489 U JP 1816489U JP H0623556 Y2 JPH0623556 Y2 JP H0623556Y2
- Authority
- JP
- Japan
- Prior art keywords
- consumable electrode
- water
- seal lid
- electroslag remelting
- furnace
- 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 - Lifetime
Links
Landscapes
- Manufacture And Refinement Of Metals (AREA)
- Crucibles And Fluidized-Bed Furnaces (AREA)
Description
【考案の詳細な説明】 〔産業上の利用分野〕 本考案は、鋳塊を消耗電極として再溶解するためのエレ
クトロスラグ再溶解炉に関するものである。DETAILED DESCRIPTION OF THE INVENTION [Industrial application] The present invention relates to an electroslag remelting furnace for remelting an ingot as a consumable electrode.
〔従来の技術〕 一般に、鋳塊を消耗電極として再溶解するためのエレク
トロスラグ再溶解炉は、例えば第４図、第５図に示すよ
うに、水冷炉底20と、この水冷炉底20に立設固定された
水冷鋳型21と、この水冷鋳型21の上部フランジ22の上面
にACガムシート（アイコウ製）等の柔軟性を有する耐火
物23を介して設けられ、且つその中心部に消耗電極Ａの
外形より僅かに大きい消耗電極Ａの挿通孔24を有するシ
ール蓋25と、このシール蓋25の挿通孔24寄りに周方向ほ
ぼ等間隔に四個所設けられた不活性ガス吹込管26と、消
耗電極Ａをシール蓋25の挿通孔24を通して昇降可能に保
持する図外の保持装置と、水冷炉底20と消耗電極Ａとに
通電する電源27とで構成されている。[Prior Art] Generally, an electroslag remelting furnace for remelting an ingot as a consumable electrode has a water-cooled furnace bottom 20 and a water-cooled furnace bottom 20 as shown in FIGS. 4 and 5, for example. The water-cooled mold 21 fixed upright and provided on the upper surface of the upper flange 22 of the water-cooled mold 21 via a flexible refractory material 23 such as AC gum sheet (made by Aiko), and the consumable electrode A at the center thereof. A seal lid 25 having an insertion hole 24 for the consumable electrode A, which is slightly larger than the outer shape of the above, and an inert gas blowing pipe 26 provided at four locations at substantially equal intervals in the circumferential direction near the insertion hole 24 of the seal lid 25, A holding device (not shown) that holds the electrode A so that it can be moved up and down through the insertion hole 24 of the seal lid 25, and a power source 27 that energizes the water-cooled furnace bottom 20 and the consumable electrode A.
尚、図中、28は水冷炉底20上に設けられた炉底保護板、
29は消耗電極Ａが再溶解されて製造された鋳塊、30は消
耗電極Ａが再溶解して作られた溶融浴を示す。In the figure, 28 is a furnace bottom protection plate provided on the water-cooled furnace bottom 20,
Reference numeral 29 represents an ingot produced by remelting the consumable electrode A, and 30 represents a molten bath formed by remelting the consumable electrode A.
ところで、上述のような構成からなるエレクトロスラグ
再溶解炉において、消耗電極Ａの再溶解は、消耗電極Ａ
を、図外の保持装置の掴持部に掴持させると共に、この
保持装置によりシール蓋25の挿通孔24を通して下降し、
水冷炉底20の上方の所定位置に止めて保持する一方、水
冷鋳型21内に不活性ガス吹込管26から不活性ガスを吹込
み、水冷鋳型21内の雰囲気ガスを不活性ガスと置換する
と共に、この不活性ガスの吹込みを行いながら、電源27
を入れて水冷炉底20と消耗電極Ａとに通電し、消耗電極
Ａを溶解して行われるが、この溶解中、鋳塊29、溶融浴
30等からの熱の影響で、水冷鋳型21の上部フランジ22の
上面と耐火物23、シール蓋25と気密性が損なわれ、この
気密性の損なわれた部位および／またはシール蓋25の消
耗電極挿通孔24と消耗電極Ａとの隙間31より大気を巻込
み、溶解中の雰囲気ガスの酸素濃度分析によれば、２Vo
l％以下ではあるが酸素の存在が認められ、このため、
特に大気侵入を抑制して再溶解しなければならない金
属、例えばチタン、アルミニウム等の活性元素を含有す
る耐熱鋼、高合金等の金属の再溶解においては、品質に
影響を及ぼす場合が有った。By the way, in the electroslag remelting furnace configured as described above, the remelting of the consumable electrode A is
Is held by a holding portion of a holding device (not shown) and lowered by the holding device through the insertion hole 24 of the seal lid 25,
While holding and holding it at a predetermined position above the water-cooled furnace bottom 20, an inert gas is blown into the water-cooled mold 21 through an inert gas blowing pipe 26 to replace the atmospheric gas in the water-cooled mold 21 with the inert gas. , While supplying this inert gas, power 27
It is performed by energizing the water-cooled furnace bottom 20 and the consumable electrode A by melting the consumable electrode A. During this melting, the ingot 29, the molten bath
Due to the influence of heat from 30 and the like, the airtightness between the upper surface of the upper flange 22 of the water-cooled mold 21, the refractory 23, and the seal lid 25 is impaired, and the site where this airtightness is impaired and / or the consumable electrode of the seal lid 25 According to the oxygen concentration analysis of the atmospheric gas being melted, the air was drawn in through the gap 31 between the insertion hole 24 and the consumable electrode A, and it was 2Vo.
The presence of oxygen was observed, although it was less than 1%.
Especially when remelting metals that must be remelted while suppressing atmospheric invasion, such as heat resistant steels containing active elements such as titanium and aluminum, and high alloys, quality may be affected. .
本考案は、上記の問題点に鑑み、溶解中の水冷鋳型内の
雰囲気ガス中に大気が侵入するのを防止した構成のエレ
クトロスラグ再溶解炉を提供することを目的としてなさ
れたものであって、その要旨は、鋳塊を消耗電極として
再溶解するためのエレクトロスラグ再溶解炉において、
溶解炉を構成する水冷鋳型の上部フランジの上面にパッ
キンを介して設けられ、且つ、消耗電極の挿通孔を有す
るシール蓋の内部に冷却水路を設ける一方、この冷却水
路を設けたシール蓋の消耗電極挿通孔寄りの上下面の少
なくとも一方の面に副わせて、消耗電極に指向するガス
噴出口を有するガスシール箱を設けてなるエレクトロス
ラグ再溶解炉である。In view of the above problems, the present invention has been made for the purpose of providing an electroslag remelting furnace configured to prevent the invasion of the atmosphere into the atmospheric gas in the water-cooled mold during melting. , Its gist is in the electroslag remelting furnace for remelting the ingot as a consumable electrode,
A cooling water channel is provided inside the seal lid that has a through hole for the consumable electrode and is provided on the upper surface of the upper flange of the water-cooled mold that constitutes the melting furnace. The electroslag remelting furnace is provided with a gas seal box having a gas ejection port directed toward the consumable electrode, which is provided on at least one of the upper and lower surfaces near the electrode insertion hole.
本考案は、シール蓋の内部に冷却水路を設けてシート蓋
を冷却しているので、シール蓋が溶解中に溶融浴等から
の熱を受けて歪むことが無い上、このようにシール蓋が
冷却され且つ歪みが生じ難いことから、このシール蓋と
水冷鋳型の上部フランジの上面との間には、シール性の
良いガスケットシールやＯリング等のパッキンが使用で
き、エレクトロスラグ再溶解中、シール蓋と水冷鋳型の
上部フランジの上面との間からの大気侵入が完全に防止
できる。Since the present invention cools the sheet lid by providing a cooling water passage inside the seal lid, the seal lid is not distorted by heat from the melting bath etc. during melting, and the seal lid is Since it is cooled and distortion is unlikely to occur, gaskets with good sealing properties and packings such as O-rings can be used between the seal lid and the upper surface of the upper flange of the water-cooled mold. It is possible to completely prevent atmospheric air from entering between the lid and the upper surface of the upper flange of the water-cooled mold.
さらにその上、冷却水路が設けられているシール蓋の消
耗電極挿通孔寄りの上下面の少なくとも一方の面に副わ
せて、消耗電極に指向するガス噴出口を有するガスシー
ル箱が設けられているので、エレクトロスラグ再溶解
中、このガスシール箱のガス噴出口から消耗電極の外周
面に向けて不活性ガスを噴出させることにより、シール
蓋の消耗電極挿通孔と消耗電極との隙間からの大気侵入
が防止できる。Furthermore, a gas seal box having a gas ejection port directed to the consumable electrode is provided so as to be subordinate to at least one of the upper and lower surfaces near the consumable electrode insertion hole of the seal lid provided with the cooling water passage. Therefore, during remelting of the electroslag, by injecting an inert gas from the gas outlet of this gas seal box toward the outer peripheral surface of the consumable electrode, the atmosphere from the gap between the consumable electrode insertion hole of the seal lid and the consumable electrode is released. Intrusion can be prevented.
以下に、本考案に係わる実施例を図面に基づいて説明す
る。An embodiment according to the present invention will be described below with reference to the drawings.
第１図は、本考案に係わるエレクトロスラグ再溶解炉の
断面側面図、第２図は、第１図の平面図、第３図は、第
１図の要部拡大図である。FIG. 1 is a sectional side view of an electroslag remelting furnace according to the present invention, FIG. 2 is a plan view of FIG. 1, and FIG. 3 is an enlarged view of a main part of FIG.
図において、１は水冷炉底で、その上面には水冷鋳型２
が立設されると共に、この水冷鋳型２の内側に炉底保護
板３が置かれている。In the figure, 1 is a water-cooled furnace bottom, and a water-cooled mold 2 is on its upper surface.
And the furnace bottom protection plate 3 is placed inside the water-cooled mold 2.
４はシール蓋で、水冷鋳型２の上部フランジ５の上面に
Ｏリング６を介して設けられ、且つその中心部に消耗電
極Ａの挿通孔７を有すると共に、その内部には冷却水の
流路８が内周から外周に向かってラセン状に設けられ、
この流路８の給水口8aと排水口8bとが上面に開口してい
る。Reference numeral 4 denotes a seal lid, which is provided on the upper surface of the upper flange 5 of the water-cooled mold 2 via an O-ring 6 and has an insertion hole 7 for the consumable electrode A at the center thereof, and a cooling water flow path inside thereof. 8 is provided in a spiral shape from the inner circumference to the outer circumference,
The water supply port 8a and the drainage port 8b of the flow path 8 are open on the upper surface.
９はガスシール箱で、シール蓋４の挿通孔７寄りの上面
に副わせて設けられ、消耗電極Ａに対向する面には、不
活性ガスを噴出させるためのスリット10が開口し、且つ
後面には、周方向ほぼ等間隔に四個所の不活性ガス導入
管11が設けられている。Reference numeral 9 denotes a gas seal box, which is provided on the upper surface near the insertion hole 7 of the seal lid 4, and has a slit 10 for ejecting an inert gas on the surface facing the consumable electrode A, and a rear surface. In this case, four inert gas introduction pipes 11 are provided at substantially equal intervals in the circumferential direction.
12は不活性ガス吹込管で、水冷鋳型２の内部に向け、シ
ール蓋４とガスシール箱９とに周方向ほぼ等間隔に四個
所設けた貫通孔に固定して設けられている。Reference numeral 12 denotes an inert gas blowing pipe, which is fixed toward the inside of the water-cooled mold 2 in through holes provided at four positions in the seal lid 4 and the gas seal box 9 at substantially equal intervals in the circumferential direction.
13は電源で、水冷炉底１と消耗電極Ａとに通電するよう
に接続されている。A power source 13 is connected to the water-cooled furnace bottom 1 and the consumable electrode A so as to be energized.
尚、14は消耗電極Ａが再溶解されて製造された鋳塊、15
は消耗電極Ａが再溶解して作られた溶融浴である。In addition, 14 is an ingot manufactured by remelting the consumable electrode A, and 15
Is a melting bath made by remelting the consumable electrode A.
このような構成からなるエレクトロスラグ再溶解炉によ
る消耗電極Ａの再溶解においては、溶解中、シール蓋４
の内部の冷却水の流路８に冷却水を通水しながら行える
ので、鋳塊14、溶融浴15からの輻射熱等による歪みが防
止でき、このようにシール蓋４が冷却され且つ歪みが生
じ難いことから、シール蓋４と水冷鋳型２の上部フラン
ジ５の上面との間にシール性の良いＯリング６が使用で
き、気密性が良くなる。また、溶解中、ガスシール箱９
のスリット10から消耗電極Ａに向けて不活性ガスを噴出
させながら行えるので、シール蓋４の挿通孔７と消耗電
極Ａとの隙間16より、水冷鋳型２内の不活性ガスに大気
が巻込まれることが無い。During remelting of the consumable electrode A by the electroslag remelting furnace having such a structure, during the melting, the seal lid 4
Since it can be performed while passing the cooling water through the cooling water flow path 8 inside, the distortion due to the radiant heat from the ingot 14 and the melting bath 15 can be prevented, and thus the seal lid 4 is cooled and distortion occurs. Since it is difficult, the O-ring 6 having a good sealing property can be used between the seal lid 4 and the upper surface of the upper flange 5 of the water-cooled mold 2, and the airtightness is improved. Also, during melting, the gas seal box 9
Since it can be performed while ejecting the inert gas from the slit 10 toward the consumable electrode A, the atmosphere is entrained in the inert gas in the water-cooled mold 2 through the gap 16 between the insertion hole 7 of the seal lid 4 and the consumable electrode A. There is nothing.
尚、上記実施例において、シール蓋４をドーナッツ状の
一体型を例に説明したが、分割型であってもよく、また
ガスシール箱９をシール蓋４の上面に副わせて設けた例
を説明したが、シール蓋４の下面に副わせて設けてもよ
く、またガスシール箱９の不活性ガスの噴出口としてス
リット10を構成した例を説明したが、多数の小孔を設け
てもよく、このような構成においても上記実施例と同様
の作用効果を奏するものである。In the above embodiment, the seal lid 4 is described as an example of a donut-shaped integral type, but it may be a split type, and an example in which the gas seal box 9 is provided on the upper surface of the seal lid 4 in an auxiliary manner. Although the description has been given, the example in which the slit 10 may be provided on the lower surface of the seal lid 4 as a subordinate, and the slit 10 is configured as the inert gas ejection port of the gas seal box 9 has been described, but a large number of small holes may be provided. Of course, even in such a configuration, the same operational effect as that of the above-described embodiment can be obtained.
〔考案の効果〕 上述したように、本考案に係わるエレクトロスラグ再溶
解炉によれば、溶解中の水冷鋳型内の雰囲気ガス中に大
気の侵入を防止した溶解が行え、僅かな大気の存在によ
っても品質が損なわれるチタン、アルミニウム等の活性
元素を含有する耐熱鋼、高合金等の金属のエレクトロス
ラグ再溶解が大気の影響を受けることなく行うことがで
きる。[Effects of the Invention] As described above, according to the electroslag remelting furnace according to the present invention, it is possible to perform melting while preventing atmospheric air from entering the atmospheric gas in the water-cooled mold during melting, and In addition, electroslag remelting of metals such as heat-resistant steel containing active elements such as titanium and aluminum whose quality is impaired and high alloys can be performed without being affected by the atmosphere.
第１図は、本考案に係わるエレクトロスラグ再溶解炉の
断面側面図、第２図は、第１図の平面図、第３図は、第
１図の要部拡大断面側面図、第４図は、従来のエレクト
ロスラグ再溶解炉の断面側面図、第５図は、第４図の平
面図である。 １…水冷炉底、２…水冷鋳型 ３…炉底保護板、４…シール蓋 ５…上部フランジ、６…Ｏリング ７…挿通孔、８…冷却水の流路 8a…給水口、8b…排水口 ９…ガスシール箱、10…スリット 11…不活性ガス導入管、12…不活性ガス吹込管 13…電源、14…鋳塊 15…溶融浴、16…隙間 Ａ…消耗電極FIG. 1 is a sectional side view of an electroslag remelting furnace according to the present invention, FIG. 2 is a plan view of FIG. 1, FIG. 3 is an enlarged sectional side view of an essential part of FIG. 1, and FIG. FIG. 5 is a sectional side view of a conventional electroslag remelting furnace, and FIG. 5 is a plan view of FIG. 1 ... Water-cooled furnace bottom, 2 ... Water-cooled mold 3 ... Furnace bottom protection plate, 4 ... Seal lid 5 ... Upper flange, 6 ... O-ring 7 ... Insertion hole, 8 ... Cooling water flow path 8a ... Water inlet, 8b ... Drainage Port 9 ... Gas seal box, 10 ... Slit 11 ... Inert gas introduction pipe, 12 ... Inert gas blowing pipe 13 ... Power supply, 14 ... Ingot 15 ... Melting bath, 16 ... Gap A ... Consumable electrode
Claims (1)
レクトロスラグ再溶解炉において、溶解炉を構成する水
冷鋳型の上部フランジの上面にパッキンを介して設けら
れ、且つ、消耗電極の挿通孔を有するシール蓋の内部に
冷却水路を設ける一方、この冷却水路を設けたシール蓋
の消耗電極挿通孔寄りの上下面の少なくとも一方の面に
副わせて、消耗電極に指向するガス噴出口を有するガス
シール箱を設けたことを特徴とするエレクトロスラグ再
溶解炉。1. An electroslag remelting furnace for remelting an ingot as a consumable electrode, which is provided on an upper surface of an upper flange of a water-cooled mold constituting the melting furnace via a packing and has a consumable electrode insertion hole. While providing a cooling water channel inside the seal lid having the above, the seal lid having the cooling water channel has a gas ejection port directed toward the consumable electrode by substituting it on at least one of the upper and lower surfaces of the seal lid near the consumable electrode insertion hole. An electroslag remelting furnace, which is equipped with a gas seal box.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1989018164U JPH0623556Y2 (en) | 1989-02-17 | 1989-02-17 | Electroslag remelting furnace |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1989018164U JPH0623556Y2 (en) | 1989-02-17 | 1989-02-17 | Electroslag remelting furnace |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH02110664U JPH02110664U (en) | 1990-09-04 |
| JPH0623556Y2 true JPH0623556Y2 (en) | 1994-06-22 |
Family
ID=31232563
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1989018164U Expired - Lifetime JPH0623556Y2 (en) | 1989-02-17 | 1989-02-17 | Electroslag remelting furnace |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0623556Y2 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102008005781A1 (en) * | 2008-01-23 | 2009-07-30 | Tradium Gmbh | Phlegmatized metal powder or alloy powder and method or reaction vessel for the production thereof |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS51147405A (en) * | 1975-06-13 | 1976-12-17 | Nippon Steel Corp | A process and apparatus for production of low hydrogen content casting ingot in electro-slag remelting process |
| JPS61197988A (en) * | 1985-02-28 | 1986-09-02 | 日本鋼管株式会社 | Top-cover electrode-hole sealing device in arc heating type out-furnace smelting device |
-
1989
- 1989-02-17 JP JP1989018164U patent/JPH0623556Y2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPH02110664U (en) | 1990-09-04 |
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