JPH08238563A - Method and instrument for discriminating leakage of molten metal from pouring outlet - Google Patents
Method and instrument for discriminating leakage of molten metal from pouring outletInfo
- Publication number
- JPH08238563A JPH08238563A JP4202095A JP4202095A JPH08238563A JP H08238563 A JPH08238563 A JP H08238563A JP 4202095 A JP4202095 A JP 4202095A JP 4202095 A JP4202095 A JP 4202095A JP H08238563 A JPH08238563 A JP H08238563A
- Authority
- JP
- Japan
- Prior art keywords
- molten metal
- vacuum
- leakage
- nozzle
- stopper
- 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.)
- Withdrawn
Links
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- Examining Or Testing Airtightness (AREA)
- Casting Support Devices, Ladles, And Melt Control Thereby (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明は、金属溶融金属を保持す
る容器の注出口からの溶融金属の漏出判定方法及びその
装置に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method and apparatus for determining molten metal leakage from a spout of a container holding molten metal.
【０００２】[0002]
【従来の技術】溶鋼、溶融合金等の溶融金属を保持する
炉又は鍋のような容器から溶融金属を注出する技術とし
て、容器を傾動する技術やストッパ機構を設けた注出口
からストッパを開放して適量注出する機構等が知られて
いる。従来、溶融金属の注出口を有する代表的な容器と
しては、製鋼における取鍋等がありスライディング方式
によって開孔するスライディングノズル等が公知であ
る。スライディングノズルは取鍋ノズルの下部に取付ら
れるため、ノズルの内部での溶融金属の凝固によるノズ
ル閉塞を防ぐため砂等の詰物を入れている。このような
技術では溶融金属の注出開始と同時に砂等の詰物が溶融
金属に巻き込まれる。この際、溶融金属を受ける側の容
量が大きく、かつ滞留時間が長ければ比重差により、こ
れらの詰物は浮上し障害とはならないが、受け側の容量
が小さい容器や溶融金属の供給と同時に製品形状となる
製品、例えば単ロール法による急冷金属薄帯（以下リボ
ンと記す）の製造装置等では、これらの詰物が直接製品
の欠陥を作り出すことになる。したがって、リボン製造
装置等では、耐火物同士の摺り合せ機構による注出口開
口閉鎖用ストッパを採用することが有利である。2. Description of the Related Art As a technique for pouring out molten metal from a container such as a furnace or a pan that holds molten metal such as molten steel or molten alloy, a technique of tilting the container or opening a stopper from a spout provided with a stopper mechanism Then, a mechanism for pouring an appropriate amount is known. Conventionally, as a typical container having a spout for molten metal, there is a ladle in steel making and the like, and a sliding nozzle or the like that is opened by a sliding method is known. Since the sliding nozzle is attached to the lower part of the ladle nozzle, it is filled with sand or the like to prevent clogging of the nozzle due to solidification of molten metal inside the nozzle. In such a technique, a filler such as sand is caught in the molten metal at the same time when the molten metal is poured out. At this time, if the volume of the receiving side of the molten metal is large and the residence time is long, these fillers will not float up and become an obstacle due to the difference in specific gravity. In a manufacturing apparatus for a product having a shape, for example, a quenched metal ribbon (hereinafter, referred to as a ribbon) by a single roll method, these fillings directly cause a defect of the product. Therefore, in a ribbon manufacturing apparatus or the like, it is advantageous to employ a stopper for closing the spout opening by a sliding mechanism of refractory materials.
【０００３】[0003]
【発明が解決しようとする課題】溶融金属の漏出を防止
する手段としては、例えば、特開昭５５−１３６５４７
号公報に開示されているような、設備構成上からより有
利な、セラミック弁を注出口に設けることで漏出を防止
する技術が知られている。この技術は閉止機構を弁とす
ることによって、従来のセラミック同士の摺り合せ方式
等に比べて漏出に関して確実性が向上することが期待で
きる。しかしながら、これらの技術を用いても、注出口
の隙間が完全に塞がれているか否かの判定はできず、事
前に漏出防止性能を知ることはできない。また、実開昭
５７−０３２１０号公報では取鍋ノズルのヘッド部分
（接触部）の材質を規定してなじみを良くする技術が提
案されている。Means for preventing leakage of molten metal is disclosed in, for example, JP-A-55-136547.
There is known a technique for preventing leakage by providing a ceramic valve at the spout, which is more advantageous from the viewpoint of the equipment configuration, as disclosed in Japanese Patent Publication No. 2003-242242. By using a valve as the closing mechanism, this technique can be expected to improve the reliability of leakage as compared with the conventional method of sliding ceramics together. However, even if these techniques are used, it is not possible to determine whether or not the gap of the spout is completely closed, and it is not possible to know the leakage prevention performance in advance. Further, Japanese Utility Model Laid-Open No. 57-03210 proposes a technique for improving the familiarity by defining the material of the head portion (contact portion) of the ladle nozzle.
【０００４】上記２つの技術は、いずれも漏出に関して
装置的な対応によって防止する手段であると云える。こ
のような従来の多くの注出口からの溶融金属の漏出防止
手段は実際の溶融金属の漏出の有無を確認することがで
きず、漏出防止に不十分であるか又は徒に仕上精度、な
じみの向上、摺り合わせ精度の向上を要求するものであ
って、漏出防止技術として事前に定量的な接触部の状態
を判定することを提案したものは見当たらない。It can be said that both of the above-mentioned two techniques are means for preventing leakage by means of device measures. Such a conventional means for preventing leakage of molten metal from many spouts cannot confirm the presence or absence of actual leakage of molten metal, and is insufficient for leakage prevention, or is unacceptable for finishing accuracy and familiarity. However, there is no proposal as to leakage prevention technology that proposes to quantitatively determine the state of the contact portion in advance as a leakage prevention technology.
【０００５】本発明は、溶融金属を収納する部分からス
トッパの開放によって溶融金属を注出する容器のストッ
パの密閉度をあらかじめ測定し、この測定に基づき、必
要かつ十分な加工を施す技術に関するものである。すな
わち本発明は、摺り合せ機構を有するストッパ方式にお
ける溶融金属の漏出防止を図るために、摺り合せ機構の
部分からの溶融金属の漏出の有無をあらかじめ判定する
方法及び装置を提供することを目的とする。The present invention relates to a technique for measuring beforehand the degree of tightness of a stopper of a container for pouring molten metal from a portion containing molten metal by opening the stopper and performing necessary and sufficient processing based on this measurement. Is. That is, an object of the present invention is to provide a method and an apparatus for previously determining the presence or absence of leakage of molten metal from a portion of the sliding mechanism in order to prevent leakage of the molten metal in a stopper system having a sliding mechanism. To do.
【０００６】[0006]
【課題を解決するための手段】本発明はこれまでの技術
改良とは全く違った観点から、注出口からの溶融金属の
漏出を事前に検知する方法及び装置を提供するものであ
る。すなわち、従来法のように、溶融金属を収納した容
器を対象とするのではなく、溶融金属を収納する前に注
出口の状態を真空吸引方式で事前に測定し、真空吸引度
を定量的に定めることにより注出口からの溶融金属の漏
出の有無を判定し、この判定に従って注出口のストッパ
の摺り合わせを調整し、漏出を防止する。SUMMARY OF THE INVENTION The present invention provides a method and an apparatus for detecting leak of molten metal from a pouring outlet in advance, from a viewpoint completely different from the technical improvement hitherto. That is, unlike the conventional method, it is not intended for the container containing the molten metal, but the state of the spout is measured in advance by the vacuum suction method before storing the molten metal, and the vacuum suction degree is quantitatively measured. By determining the presence or absence of leakage of the molten metal from the spout, adjust the sliding contact of the stopper of the spout according to this determination to prevent leakage.
【０００７】本発明は、溶融金属保持容器を空にして溶
融金属注出口を閉止し、該注出口の出側を密閉して真空
にし、該真空の真空度を設定値と比較し、前記閉止した
部分からの溶融金属の漏出の有無を事前に判定すること
を特徴とする注出口からの溶融金属の漏出判定方法であ
る。この場合、前記設定値として、鉄を主体とした溶融
金属では、１６００℃において溶融金属高さが０．５ｍ
程度において、−２０ｃｍＨｇ以上の真空度であればよ
い。According to the present invention, the molten metal holding container is emptied to close the molten metal pouring port, the outlet side of the pouring port is closed to make a vacuum, the degree of vacuum of the vacuum is compared with a set value, and the closing is performed. The method for determining leakage of molten metal from a spout is characterized in that the presence or absence of leakage of molten metal from the above portion is determined in advance. In this case, as the set value, when the molten metal mainly composed of iron has a molten metal height of 0.5 m at 1600 ° C.
The degree of vacuum may be -20 cmHg or more.
【０００８】上記本発明方法を好適に実施することがで
きる本発明の装置として、溶融金属保持容器の溶融金属
注出口先端に密着させる吸引管と、該吸引管に接続した
真空吸引装置と、該吸引管内の真空度を測定する真空度
測定器とから構成されていることを特徴とする注出口か
らの溶融金属の漏出判定装置を提供する。As an apparatus of the present invention capable of suitably carrying out the above-mentioned method of the present invention, a suction pipe closely attached to the tip of the molten metal pouring outlet of the molten metal holding container, a vacuum suction device connected to the suction pipe, Provided is a device for determining leakage of molten metal from a spout, which is configured by a vacuum degree measuring device for measuring the degree of vacuum in a suction pipe.
【０００９】[0009]
【作用】溶融金属を収納する容器は、高温で使用される
ことから注出口周りは必然的に耐火物で構成される。注
出口に用いられる耐火物はストッパの役割とノズルの役
割を担う部分に嵌め合いか又は摺り合せ等によって使用
される。この時、耐火物の特性上、ストッパとノズル部
での接触部で完全密着させることは極めて難しく、耐火
物粒子の形状等によっては、微小な隙間が存在する。こ
の微小な隙間の管理が非常に難しく、時には漏出を招く
原因となる。The container for accommodating the molten metal is inevitably made of refractory around the spout because it is used at a high temperature. The refractory used for the spout is used by fitting or sliding the parts that play the role of a stopper and the role of a nozzle. At this time, due to the characteristics of the refractory material, it is extremely difficult to bring the stopper and the nozzle portion into close contact with each other, and a minute gap exists depending on the shape of the refractory material particles. It is very difficult to manage these minute gaps, which sometimes causes leakage.
【００１０】本発明によれば、ストッパとノズルの間の
微小な隙間を事前に真空吸引によって検知することによ
って、従来からの注出口からの溶融金属の漏出の問題を
解決することができる。図１はストッパ１とノズル４の
摺り合せによる注出口の密閉度を真空吸引によって検知
する装置の一例を示す。すなわち、ストッパ１とノズル
４間に生じる微小な隙間５から溶融金属の漏出を生ずる
か否かの程度を、ノズル４の下方の空間を真空装置１１
によって吸引し、この空間の真空度を真空計１２によっ
て測定することによって判断することができる。According to the present invention, the problem of leakage of molten metal from the conventional spout can be solved by detecting the minute gap between the stopper and the nozzle by vacuum suction in advance. FIG. 1 shows an example of an apparatus for detecting the degree of airtightness of a spout by sliding the stopper 1 and the nozzle 4 by vacuum suction. That is, the degree of whether molten metal leaks from the minute gap 5 formed between the stopper 1 and the nozzle 4 is determined by the vacuum device 11 in the space below the nozzle 4.
It is possible to judge by sucking with and measuring the degree of vacuum in this space with the vacuum gauge 12.
【００１１】発明者らの多くの実験と考察によれば、鉄
を主体とした溶融金属では１６００℃において溶融金属
高さが０．５ｍ程度において、−２０ｃｍＨｇ以上の真
空度が維持できれば何ら問題のないことが明らかとなっ
た。合金鉄や他の金属系によっては、溶融金属の融点や
粘性の違いにより、漏出しやすい材料もあることから、
真空度は望ましくは−２５ｃｍＨｇ以上が望ましい。According to many experiments and discussions made by the present inventors, in a molten metal mainly composed of iron, if a vacuum of -20 cmHg or more can be maintained at a molten metal height of about 0.5 m at 1600 ° C., there will be no problem. It became clear that there is no. Depending on the ferroalloy and other metal systems, there are materials that easily leak due to the difference in melting point and viscosity of the molten metal,
The vacuum degree is preferably -25 cmHg or more.
【００１２】[0012]
【実施例】図１はライニング３を施し溶融金属を収納す
る容器２のストッパ１とノズル４の摺り合せ部からの溶
融金属の漏出を真空吸引によって判定する工程及びその
装置を示す断面図である。この容器１は、重量組成でＦ
ｅ８７％にＳｉ、Ｃ、Ｓ等を含む合金で１６００℃の溶
融金属を約６００ｋｇ収納する容器である。容器２の底
部には溶融金属を注出するアルミナ系ノズル４が設けら
れており、同じくアルミナ系組成のストッパ１とノズル
４との隙間５が密閉状態になるように摺り合わせられ
る。容器２に溶融金属を収納する前に、注出口の先端に
密着させる吸引管１３をパッキング１５、取付部１４を
介して注出口の先端に取付け、この吸引管１３に可搬式
の真空吸引装置１１をパッキンを介して接続し、吸引管
１３内の真空度を測定する真空度測定器として真空計１
２とを取付けた。ついで、外径５０ｍｍのストッパ１を
それよりも小さい注出口を有するノズル４に圧着し、真
空吸引装置１１を駆動して吸引管内を真空とし、ストッ
パ１とノズル４の摺り合せ状態を真空吸引によって測定
した。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS FIG. 1 is a sectional view showing a process and an apparatus for determining leakage of molten metal from a sliding portion of a stopper 1 and a nozzle 4 of a container 2 containing a molten metal and containing a molten metal by vacuum suction. . This container 1 has a weight composition of F
A container containing about 600 kg of molten metal at 1600 ° C. made of an alloy containing Si, C, S, etc. in e87%. An alumina-based nozzle 4 for pouring out molten metal is provided at the bottom of the container 2, and the stopper 5 and the nozzle 4 which are similarly made of alumina-based composition are rubbed together so as to be hermetically closed. Before the molten metal is stored in the container 2, a suction pipe 13 that is brought into close contact with the tip of the spout is attached to the tip of the spout through a packing 15 and a mounting portion 14, and a portable vacuum suction device 11 is attached to the suction pipe 13. As a vacuum degree measuring instrument for measuring the degree of vacuum in the suction tube 13 by connecting the
I installed 2 and. Then, the stopper 1 having an outer diameter of 50 mm is pressure-bonded to the nozzle 4 having a smaller spout, and the vacuum suction device 11 is driven to make the inside of the suction tube a vacuum. It was measured.
【００１３】表１は１６００℃の合金鉄組成で溶融金属
高さが０．５ｍの時の漏出の有無を示している。真空度
が−２０ｃｍＨｇ以上の真空度では漏出がまったく発生
しなかった。表１から明らかなように、真空度によって
ストッパ１とノズル４との接触状態が検知され、これに
基づいて摺り合わせ部の手入れを適切に行うことがで
き、必要かつ十分な漏出防止効果を得ることができるこ
とは明らかである。Table 1 shows the presence / absence of leakage at a molten iron height of 0.5 m with a ferroalloy composition of 1600 ° C. At a vacuum level of -20 cmHg or higher, no leakage occurred. As is apparent from Table 1, the contact state between the stopper 1 and the nozzle 4 is detected by the degree of vacuum, and the sliding portion can be properly maintained based on this, and a necessary and sufficient leakage prevention effect is obtained. It is clear that you can.
【００１４】上述のように、本発明は、溶融金属を収納
する前にあらかじめ注出口からの溶融金属の漏出の有無
を判断する方法として、これまでにない新しい検出方法
によって、溶融金属の漏出事故を未然に防止することが
でき、その技術的意義と安全確保の点で極めて有効であ
る。As described above, according to the present invention, as a method of judging the presence or absence of the leakage of the molten metal from the spout before storing the molten metal, the leakage of the molten metal is detected by a new detection method which has never existed before. Can be prevented in advance, and it is extremely effective in terms of its technical significance and ensuring safety.
【００１５】[0015]
【表１】 [Table 1]
【００１６】[0016]
【発明の効果】本発明は、溶融金属を扱う容器におい
て、注出口からの溶融金属の漏出の有無を事前に真空吸
引によって的確に判断することができ、漏出を未然に防
止することができ、その技術的意義は極めて大きく、安
全上の観点からもその工業的意義は大である。INDUSTRIAL APPLICABILITY According to the present invention, in a container handling molten metal, the presence or absence of leakage of molten metal from the pouring port can be accurately determined in advance by vacuum suction, and leakage can be prevented in advance. Its technical significance is extremely large, and its industrial significance is also great from the viewpoint of safety.
【図１】実施例の溶融金属の漏出判定工程及び装置を示
す縦断面図である。FIG. 1 is a vertical cross-sectional view showing a molten metal leak determination process and an apparatus according to an embodiment.
１ ストッパ ２ 容器 ３ ライニング ４ ノズル ５ 隙間 １１ 真空吸引装
置 １２ 真空計 １３ 吸引管 １４ 取付部 １５ パッキング1 Stopper 2 Container 3 Lining 4 Nozzle 5 Gap 11 Vacuum Suction Device 12 Vacuum Gauge 13 Suction Tube 14 Mounting Part 15 Packing
───────────────────────────────────────────────────── フロントページの続き (72)発明者 須原 俊 千葉県千葉市中央区川崎町１番地 川崎製 鉄株式会社千葉製鉄所内 (72)発明者 黒川 克美 千葉県千葉市中央区川崎町１番地 川崎製 鉄株式会社千葉製鉄所内 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Shun Suhara 1 Kawasaki-cho, Chuo-ku, Chiba, Chiba Prefecture Chiba Works, Kawasaki Steel Co., Ltd. (72) Katsumi Kurokawa 1 Kawasaki-cho, Chuo-ku, Chiba, Chiba Prefecture Kawasaki Chiba Steel Works, Ltd.
Claims (3)
出口を閉止し、該注出口の出側を密閉して真空にし、該
真空の真空度を設定値と比較し、前記閉止した部分から
の溶融金属の漏出の有無を事前に判定することを特徴と
する注出口からの溶融金属の漏出判定方法。1. A molten metal holding container is emptied to close the molten metal spout, the outlet side of the spout is closed to make a vacuum, the degree of vacuum of the vacuum is compared with a set value, and the closed part is closed. A method for determining leakage of molten metal from a pouring outlet, which comprises determining in advance whether or not there is leakage of molten metal from the outlet.
度であることを特徴とする請求項１記載の注出口からの
溶融金属の漏出判定方法。2. The method for determining leakage of molten metal from a spout according to claim 1, wherein the set value is a vacuum degree of -20 cmHg or more.
に密着させる吸引管と、該吸引管に接続した真空吸引装
置と、該吸引管内の真空度を測定する真空度測定器とか
らなることを特徴とする注出口からの溶融金属の漏出判
定装置。3. A suction pipe which is brought into close contact with the tip of the molten metal spout of the molten metal holding container, a vacuum suction device connected to the suction pipe, and a vacuum degree measuring device for measuring the degree of vacuum in the suction pipe. An apparatus for determining leakage of molten metal from a spout, characterized by.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4202095A JPH08238563A (en) | 1995-03-01 | 1995-03-01 | Method and instrument for discriminating leakage of molten metal from pouring outlet |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4202095A JPH08238563A (en) | 1995-03-01 | 1995-03-01 | Method and instrument for discriminating leakage of molten metal from pouring outlet |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH08238563A true JPH08238563A (en) | 1996-09-17 |
Family
ID=12624494
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP4202095A Withdrawn JPH08238563A (en) | 1995-03-01 | 1995-03-01 | Method and instrument for discriminating leakage of molten metal from pouring outlet |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH08238563A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108562406A (en) * | 2018-01-26 | 2018-09-21 | 许生安 | A kind of closed container leak detecting device peculiar to vessel |
| CN108687330A (en) * | 2017-04-12 | 2018-10-23 | 科华控股股份有限公司 | The suction pouring package seal checker for inhaling casting room |
-
1995
- 1995-03-01 JP JP4202095A patent/JPH08238563A/en not_active Withdrawn
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108687330A (en) * | 2017-04-12 | 2018-10-23 | 科华控股股份有限公司 | The suction pouring package seal checker for inhaling casting room |
| CN108562406A (en) * | 2018-01-26 | 2018-09-21 | 许生安 | A kind of closed container leak detecting device peculiar to vessel |
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| A300 | Withdrawal of application because of no request for examination |
Free format text: JAPANESE INTERMEDIATE CODE: A300 Effective date: 20020507 |