JPH07180968A - Vacuum induction melting furnace - Google Patents
Vacuum induction melting furnaceInfo
- Publication number
- JPH07180968A JPH07180968A JP34536493A JP34536493A JPH07180968A JP H07180968 A JPH07180968 A JP H07180968A JP 34536493 A JP34536493 A JP 34536493A JP 34536493 A JP34536493 A JP 34536493A JP H07180968 A JPH07180968 A JP H07180968A
- Authority
- JP
- Japan
- Prior art keywords
- vacuum
- melting furnace
- molten metal
- furnace
- vacuum chamber
- 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
Landscapes
- Crucibles And Fluidized-Bed Furnaces (AREA)
- Furnace Housings, Linings, Walls, And Ceilings (AREA)
- Furnace Details (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明は、真空チャンバー内に金
属溶解炉の炉体を収納するタイプの真空誘導溶解炉にお
いて、炉蓋に試料採取管などを炉内に挿入するための支
持機構を設け、溶解作業の効率化、安全性を図った真空
誘導溶解炉に関するもので、特にＡ１ーＬｉ合金のよう
な活性な金属、合金の溶解に好適に使用されるものであ
る。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a vacuum induction melting furnace of the type in which a furnace body of a metal melting furnace is housed in a vacuum chamber, and a supporting mechanism for inserting a sampling tube or the like into a furnace lid is provided. The present invention relates to a vacuum induction melting furnace in which the efficiency of the melting work is improved and the safety is improved, and it is particularly preferably used for melting active metals and alloys such as A1-Li alloy.
【０００２】[0002]
【従来の技術】合金元素としてリチウムを含有するＡ１
ーＬｉ合金等活性な金属、合金の溶解は、酸化や水素ガ
ス吸収による耐火物との反応を防ぐため、真空雰囲気あ
るいはアルゴンガス、窒素ガス等の不活性雰囲気で行わ
れる。この溶解炉としては、通常、真空チャンバー内に
収納された高周波誘導溶解炉などの溶解炉を真空チャン
バーとともに傾動させて金属溶湯を出湯する傾動式の真
空溶解炉が使用されている。A1 containing lithium as an alloying element
The melting of an active metal such as a Li alloy or an alloy is performed in a vacuum atmosphere or an inert atmosphere such as an argon gas or a nitrogen gas in order to prevent a reaction with a refractory due to oxidation or absorption of hydrogen gas. As this melting furnace, a tilting type vacuum melting furnace is usually used, in which a melting furnace such as a high frequency induction melting furnace housed in a vacuum chamber is tilted together with the vacuum chamber to discharge molten metal.
【０００３】これらの真空溶解炉により実際の溶解作業
を行う場合には、溶解材料の装入、溶湯の温度測定、溶
湯へのガスの吹込み、溶湯のサンプリングなどの作業が
必要であるが、これらの作業は溶解雰囲気を保持したま
ま実施しなければならず、特に溶湯の温度測定、溶湯へ
のガス吹込み、溶湯のサンプリングは、溶融状態で行な
う高温作業となる。更に活性なＡ１ーＬｉ合金などの溶
湯の場合には水分の接触により水蒸気爆発のおそれもあ
り危険性を伴うため、従来きわめて多くの工数がかか
り、炉体構造上の制約も多かった。When performing actual melting work with these vacuum melting furnaces, it is necessary to charge the melted material, measure the temperature of the melt, inject gas into the melt, and sample the melt. These operations must be carried out while maintaining the molten atmosphere, and particularly the temperature measurement of the molten metal, the gas injection into the molten metal, and the sampling of the molten metal are high-temperature operations performed in the molten state. Further, in the case of a molten metal such as an active A1-Li alloy, there is a risk of vapor explosion due to contact with water, which is dangerous.
【０００４】[0004]
【発明が解決しようとする課題】本発明は、真空誘導溶
解炉における上記問題点を解消するためになされたもの
であり、その目的は、真空チャンバー内に金属溶解炉の
炉体を収納し真空チャンバーとともに炉体を傾動させて
出湯口から出湯するようにした真空誘導溶解炉におい
て、溶湯の温度測定、溶湯へのガスの吹込み、溶湯のサ
ンプリングを効率的に行うことができるようにした真空
誘導溶解炉を提供するものである。SUMMARY OF THE INVENTION The present invention has been made in order to solve the above problems in a vacuum induction melting furnace, and its purpose is to house a furnace body of a metal melting furnace in a vacuum chamber and to produce a vacuum. In a vacuum induction melting furnace in which the furnace body is tilted together with the chamber and tapped from the tap hole, a vacuum that enables efficient measurement of the temperature of the molten metal, blowing of gas into the molten metal, and sampling of the molten metal An induction melting furnace is provided.
【０００５】[0005]
【課題を解決するための手段】本発明による真空誘導溶
解炉は、真空蓋を備えた真空チャンバー内に金属溶解炉
の炉体を収納し真空チャンバーとともに炉体を傾動させ
て出湯するようにした真空誘導溶解炉において、試料採
取管、熱電対管およびガス吹込管が、前記真空蓋に設け
た支持部に、これらの管が真空チャンバー内の炉中に挿
入できるよう炉内雰囲気を保持するシール機構を介して
昇降可能に支持されていることを特徴とするものであ
る。In a vacuum induction melting furnace according to the present invention, a furnace body of a metal melting furnace is housed in a vacuum chamber equipped with a vacuum lid, and the furnace body is tilted together with the vacuum chamber for tapping. In a vacuum induction melting furnace, a sampling tube, a thermocouple tube, and a gas blowing tube are provided on a support portion provided on the vacuum lid, and a seal that holds the atmosphere in the furnace so that these tubes can be inserted into the furnace in the vacuum chamber. It is characterized in that it is supported so as to be able to move up and down through a mechanism.
【０００６】[0006]
【作用】本発明は、真空チャンバーの真空蓋に設けられ
た支持部に溶湯試料採取管、溶湯温度測定のための熱電
対管および溶湯へのガス吹込管が支持され、これらの管
が真空チャンバー内の炉中に挿入できるようチャンバー
内の気密性を保持したまま支持部において昇降可能とな
っているから、作業者がわざわざ真空溶解炉のそばまで
行かなくても自動的且つ短時間で上記各管の操作を行う
ことが可能となる。In the present invention, the molten metal sampling pipe, the thermocouple pipe for measuring the molten metal temperature, and the gas blowing pipe to the molten metal are supported on the supporting portion provided on the vacuum lid of the vacuum chamber. Since it is possible to move up and down at the support part while maintaining the airtightness of the chamber so that it can be inserted into the furnace inside, it is possible to automatically and in a short time even if the operator does not go to the side of the vacuum melting furnace. It becomes possible to operate the tube.
【０００７】[0007]
【実施例】以下、本発明の実施例を図面を参照して詳細
に説明する。真空誘導溶解炉１は図１に示すように、真
空蓋３を備えた真空チャンバー２内に高周波誘導炉など
の溶解炉４が収納されている。真空蓋３には溶解炉４中
の溶湯Ｍから溶湯の試料を採取するための試料採取管５
と、溶湯Ｍの温度を測定するための熱電対を収納した熱
電対管６、および溶湯Ｍの脱ガスなどのために溶湯内に
不活性ガスを吹込むガス吹込管７が、真空蓋３に設けら
れた支持部８、９、10に支持され、支持部を通してエア
シリンダーなどの手段（図示せず）により昇降できるよ
うになっている。Embodiments of the present invention will now be described in detail with reference to the drawings. As shown in FIG. 1, the vacuum induction melting furnace 1 has a melting chamber 4 such as a high frequency induction furnace accommodated in a vacuum chamber 2 having a vacuum lid 3. The vacuum lid 3 has a sampling tube 5 for sampling a sample of the molten metal from the molten metal M in the melting furnace 4.
A thermocouple tube 6 containing a thermocouple for measuring the temperature of the molten metal M, and a gas blowing tube 7 for blowing an inert gas into the molten metal to degas the molten metal M, etc. It is supported by the supporting portions 8, 9 and 10 provided, and can be raised and lowered by means such as an air cylinder (not shown) through the supporting portions.
【０００８】なお真空蓋３から上部に突出する各管５、
６、７の寸法が大きくなると、出湯に際し真空チャンバ
ー２を傾動させる場合に、真空誘導溶解炉１の上方に突
出した管の移動軌跡分のスペースが必要となるので、各
管の昇降用エアシリンダーとしては、通常のロッド型シ
リンダーの約半分の長さとなるロッドレスシリンダーを
採用するのが望ましい。Each tube 5 protruding upward from the vacuum lid 3,
When the dimensions of 6 and 7 are large, when the vacuum chamber 2 is tilted when tapping hot water, a space corresponding to the moving locus of the pipe protruding above the vacuum induction melting furnace 1 is required, and therefore the air cylinder for raising and lowering each pipe is provided. For this reason, it is desirable to adopt a rodless cylinder that is about half the length of a normal rod type cylinder.
【０００９】また支持部８、９、10には夫々０リングな
どのシール機構が設けられ、試料採取管５、熱電対管
６、ガス吹込管７は該シール機構を介して昇降するか
ら、昇降中真空チャンバー２内の不活性ガスが漏洩する
ことはない。また支持部８、９、10に設けられるシール
機構は溶湯Ｍからの伝熱により焼損することがないよう
に水冷構造とするのが好ましい。Further, a sealing mechanism such as an O-ring is provided on each of the supporting portions 8, 9 and 10, and the sample collecting tube 5, the thermocouple tube 6 and the gas blowing tube 7 ascend and descend through the sealing mechanism. The inert gas in the middle vacuum chamber 2 does not leak. Further, it is preferable that the sealing mechanism provided in the supporting portions 8, 9 and 10 has a water cooling structure so as not to be burnt by heat transfer from the molten metal M.
【００１０】また試料採取管５とガス吹込管７が溶湯に
より加熱されて熱変形すると、昇降時にシール機構に加
わる力が大きくなり０リングなどが損傷するおそれがあ
り、さらに変形が進行すると昇降不能となる危険性もあ
るので試料採取管５とガス吹込管７の内部を空冷する構
造とするのがよい。また試料採取管５の真空蓋３から外
側に突出した上部には、真空バルブ12を介してサンプリ
ング室11が設けられている。Further, when the sample collecting pipe 5 and the gas blowing pipe 7 are heated by the molten metal and are thermally deformed, the force applied to the sealing mechanism at the time of raising and lowering may increase the O-ring and the like, and if the deformation further progresses, it is impossible to move up and down. Therefore, it is preferable that the inside of the sampling pipe 5 and the gas blowing pipe 7 be air-cooled. A sampling chamber 11 is provided on the upper portion of the sampling tube 5 projecting outward from the vacuum lid 3 via a vacuum valve 12.
【００１１】上記構成の真空誘導溶解炉において、真空
蓋３を開けて真空チャンバー２内の溶解炉４に溶解材料
を装入してから真空蓋３を閉め、図示しない真空ポンプ
により真空チャンバー２内を真空に排気してから、ガス
吹込管から不活性ガスを封入して高周波誘導加熱を行な
って材料を溶解する。溶解作業時には試料採取管５、熱
電対管６、ガス吹込管７は仮想線で示すように溶湯Ｍ中
に挿入されるが、作業終了後には引き上げられ、真空蓋
３の開閉時には、開閉動作を妨げないようになってい
る。In the vacuum induction melting furnace having the above structure, the vacuum lid 3 is opened, the melting material is charged into the melting furnace 4 in the vacuum chamber 2, and then the vacuum lid 3 is closed. After being evacuated to a vacuum, an inert gas is filled from a gas injection pipe and high frequency induction heating is performed to melt the material. The sample collection tube 5, the thermocouple tube 6, and the gas injection tube 7 are inserted into the molten metal M as shown by the phantom line during the melting work, but they are pulled up after the work is completed, and the opening / closing operation is performed when the vacuum lid 3 is opened / closed. It does not interfere.
【００１２】溶解作業中の溶湯Ｍの温度は熱電対管６に
より測定され、また溶湯Ｍのサンプリングを行なう場合
は、試料採取管５により溶湯Ｍを採取してサンプリング
室11まで引き出した後、真空バルブ12を閉じることによ
り、真空チャンバー２内の不活性雰囲気を維持したまま
で溶湯Ｍをサンプリングすることができる。溶湯Ｍを出
湯する時には、図示しない油圧シリンダーなどの手段に
より真空チャンバー２を傾動させ、溶解炉４の出湯口か
ら出湯するようになっている。The temperature of the molten metal M during the melting operation is measured by the thermocouple tube 6. When the molten metal M is sampled, the molten metal M is sampled by the sampling tube 5 and drawn to the sampling chamber 11 and then vacuumed. By closing the valve 12, the molten metal M can be sampled while maintaining the inert atmosphere in the vacuum chamber 2. When the molten metal M is discharged, the vacuum chamber 2 is tilted by means such as a hydraulic cylinder (not shown) so that the molten metal M is discharged from the discharge port of the melting furnace 4.
【００１３】[0013]
【発明の効果】以上説明した如く本発明によれば、溶湯
試料のサンプリング、溶湯温度の測定、溶湯へのガス吹
込みの作業を自動化して操作室内で行うことが可能とな
り、作業効率の向上が図れるとともに、作業者が高温雰
囲気や水蒸気爆発の危険性にさらされることがない安全
性の高く、特に活性なＡ１ーＬｉ合金などの溶解の場合
に好適な真空誘導溶解炉を得ることができる。As described above, according to the present invention, it becomes possible to automate the operations of sampling a molten metal sample, measuring the temperature of the molten metal, and blowing gas into the molten metal in the operation room, thus improving the working efficiency. In addition, it is possible to obtain a vacuum induction melting furnace that is highly safe and does not expose workers to the danger of high temperature atmosphere or steam explosion, and is particularly suitable for melting active A1-Li alloys. .
【図１】本発明の実施例による真空誘導溶解炉の要部断
面図である。FIG. 1 is a sectional view of an essential part of a vacuum induction melting furnace according to an embodiment of the present invention.
１ 真空誘導溶解炉 ２ 真空チャンバー ３ 真空蓋 ４ 溶解炉 ５ 試料採取管 ６ 熱電対管 ７ ガス吹込管 ８ 支持部 ９ 支持部 10 支持部 11 サンプリング室 12 真空バルブ Ｍ 溶湯 1 vacuum induction melting furnace 2 vacuum chamber 3 vacuum lid 4 melting furnace 5 sampling tube 6 thermocouple tube 7 gas blowing tube 8 support 9 support 10 support 11 sampling chamber 12 vacuum valve M molten metal
Claims (1)
溶解炉の炉体を収納し真空チャンバーとともに炉体を傾
動させて出湯するようにした真空誘導溶解炉において、
試料採取管、熱電対管およびガス吹込管が、前記真空蓋
に設けた支持部に、これらの管が真空チャンバー内の炉
中に挿入できるよう炉内雰囲気を保持するシール機構を
介して昇降可能に支持されていることを特徴とする真空
誘導溶解炉。1. A vacuum induction melting furnace in which a furnace body of a metal melting furnace is housed in a vacuum chamber equipped with a vacuum lid, and the furnace body is tilted together with the vacuum chamber to discharge hot water.
A sampling tube, thermocouple tube and gas injection tube can be moved up and down via a sealing mechanism that holds the atmosphere inside the furnace so that these tubes can be inserted into the furnace inside the vacuum chamber on the support part provided on the vacuum lid. A vacuum induction melting furnace characterized by being supported by.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP34536493A JPH07180968A (en) | 1993-12-21 | 1993-12-21 | Vacuum induction melting furnace |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP34536493A JPH07180968A (en) | 1993-12-21 | 1993-12-21 | Vacuum induction melting furnace |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH07180968A true JPH07180968A (en) | 1995-07-18 |
Family
ID=18376103
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP34536493A Pending JPH07180968A (en) | 1993-12-21 | 1993-12-21 | Vacuum induction melting furnace |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH07180968A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100851877B1 (en) * | 2002-05-29 | 2008-08-13 | 주식회사 포스코 | Device for lifting thermocouple of burner in cover of ladle |
| CN104406406A (en) * | 2014-11-05 | 2015-03-11 | 镁联科技（芜湖）有限公司 | Metal melting plant |
| CN105443754A (en) * | 2014-08-11 | 2016-03-30 | 王金青 | Sealing device for measuring device for deep well-type oil furnace |
-
1993
- 1993-12-21 JP JP34536493A patent/JPH07180968A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100851877B1 (en) * | 2002-05-29 | 2008-08-13 | 주식회사 포스코 | Device for lifting thermocouple of burner in cover of ladle |
| CN105443754A (en) * | 2014-08-11 | 2016-03-30 | 王金青 | Sealing device for measuring device for deep well-type oil furnace |
| CN104406406A (en) * | 2014-11-05 | 2015-03-11 | 镁联科技（芜湖）有限公司 | Metal melting plant |
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