JPH06265539A - Lower injection molten metal sampler - Google Patents
Lower injection molten metal samplerInfo
- Publication number
- JPH06265539A JPH06265539A JP5081223A JP8122393A JPH06265539A JP H06265539 A JPH06265539 A JP H06265539A JP 5081223 A JP5081223 A JP 5081223A JP 8122393 A JP8122393 A JP 8122393A JP H06265539 A JPH06265539 A JP H06265539A
- Authority
- JP
- Japan
- Prior art keywords
- molten metal
- sampler
- diameter
- chamber
- expanded
- 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
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N1/00—Sampling; Preparing specimens for investigation
- G01N1/02—Devices for withdrawing samples
- G01N1/10—Devices for withdrawing samples in the liquid or fluent state
- G01N1/12—Dippers; Dredgers
- G01N1/125—Dippers; Dredgers adapted for sampling molten metals
Landscapes
- Sampling And Sample Adjustment (AREA)
- Investigating And Analyzing Materials By Characteristic Methods (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明は、溶鋼等の溶融金属を採
取するに際し、溶融金属を下方から流入せしめ、上方に
位置するサンプラーに充填凝固せしめるための下注式溶
融金属試料採取装置に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a submersion type molten metal sampler for injecting molten metal from below and filling and solidifying it in a sampler located above when collecting molten metal such as molten steel.
【０００２】[0002]
【従来の技術】従来の下注式溶融金属試料採取装置は、
図４に示すように、先端を下向きとする円筒状の紙管製
プローブ本体１を構成し、該プローブ本体１の先端部に
内装されたシェルモールド及び紙管等の成形物から成る
保持部材２及びプローブ本体１の先端に挿入されたシェ
ルモールド及びセラミックス等の成形物から成る栓体３
を介してサンプラー４を収納し、該サンプラー４の下方
に導入管５を延出せしめている。2. Description of the Related Art A conventional submersible molten metal sampling device is
As shown in FIG. 4, a cylindrical paper tube probe main body 1 with its tip facing downward is formed, and a holding member 2 made of a molded product such as a shell mold and a paper tube installed in the tip portion of the probe main body 1. And a plug body 3 formed of a molded product such as a shell mold and ceramics inserted at the tip of the probe body 1.
The sampler 4 is housed through the sampler 4, and the introduction pipe 5 is extended below the sampler 4.
【０００３】前記導入管５は、石英管又はセラミックス
管等の耐熱保温性を有するパイプから成り、栓体３から
下方に突出された下部の下端に流入開口６を有する。
尚、流入開口６は、薄鋼板等から成るキャップ７により
被包されている。The introduction pipe 5 is made of a heat-resistant and heat-resistant pipe such as a quartz pipe or a ceramic pipe, and has an inflow opening 6 at the lower end of the lower part protruding downward from the plug body 3.
The inflow opening 6 is covered with a cap 7 made of a thin steel plate or the like.
【０００４】前記サンプラー４は、前記導入管５の上部
に連通された試料採取室８を形成する試料採取容器を構
成し、上部に位置して試料採取室８の内外を連通せしめ
るガス抜き孔９を設けている。図示の場合、サンプラー
４は、試料採取室８内で概ね偏平なディスク状試料を採
取する浅底状とされた半割状の鋼等金属製の容器を突き
合わせることにより構成され、前記導入管５の上部を挿
入接続するスリーブ１０を備えている。The sampler 4 constitutes a sampling container which forms a sampling chamber 8 which communicates with the upper portion of the introduction tube 5, and is located at the upper portion and has a gas vent hole 9 for communicating the inside and outside of the sampling chamber 8 with each other. Is provided. In the illustrated case, the sampler 4 is configured by abutting a container made of a metal such as a half-divided steel, which is a shallow bottom, for collecting a substantially flat disk-shaped sample in the sample collection chamber 8, It is provided with a sleeve 10 for inserting and connecting the upper part of 5.
【０００５】そこで、この下注式溶融金属試料採取装置
により金属試料を採取するに際し、プローブ本体１は、
浸漬装置により、溶融金属に浸漬される。プローブ本体
１がスラグ層を通過して溶融金属浴中の所定位置まで沈
下すると、キャップ７が喪失して流入開口６を開口せし
め、該流入開口６から溶融金属を導入管５に流入せしめ
る。これによりサンプラー４の試料採取室８には溶融金
属が充填され、そこで溶融金属は凝固して採取試料とな
る。プローブ本体１を溶融金属から引き上げた後、採取
試料は、サンプラー４から取り出され、発光分光分析や
燃焼分析等の試料分析に供される。Therefore, when the metal sample is sampled by the submersible molten metal sampler, the probe body 1 is
It is immersed in the molten metal by the immersion device. When the probe body 1 passes through the slag layer and sinks to a predetermined position in the molten metal bath, the cap 7 is lost to open the inflow opening 6, and the molten metal is allowed to flow into the introduction pipe 5 from the inflow opening 6. As a result, the sample collection chamber 8 of the sampler 4 is filled with the molten metal, and the molten metal is solidified there to form a sample to be collected. After pulling up the probe body 1 from the molten metal, the sample to be sampled is taken out from the sampler 4 and subjected to sample analysis such as emission spectroscopy analysis and combustion analysis.
【０００６】[0006]
【発明が解決しようとする課題】前述した従来の下注式
溶融金属試料採取装置においては、流入開口６が開口す
るや否や、溶融金属が勢い良く導入管５に流入され、試
料採取室８に噴流及び乱流を伴って注入される。In the above-mentioned conventional submersible molten metal sampler, as soon as the inflow opening 6 is opened, the molten metal is vigorously flowed into the introduction pipe 5 and into the sample collection chamber 8. It is injected with jets and turbulence.
【０００７】このような勢いの良い流入は、一見、試料
採取室８に溶融金属を完全充填せしめるために好ましい
ように考えられがちであるが、本発明者らの実験による
と、重大な問題があることが知見された。[0007] Such a vigorous inflow tends to be considered preferable in order to completely fill the sampling chamber 8 with the molten metal, but according to the experiments by the present inventors, a serious problem occurs. It was discovered that there is.
【０００８】即ち、溶融金属が導入管５を勢い良く流通
して試料採取室８に対し噴流又は乱流を伴って注入され
ると、試料採取室８内において飛散した溶融金属がガス
抜き孔９に付着し、早期にガス抜き孔９を閉塞してしま
う。蓋し、サンプラー４は、溶融金属を凝固せしめる目
的で鋼等の金属により形成されているため、溶融金属が
ガス抜き孔９に向けて飛散されると、そこで凝固されガ
ス抜き孔９を閉塞してしまう。That is, when the molten metal is vigorously circulated through the introduction pipe 5 and is injected into the sampling chamber 8 with a jet flow or a turbulent flow, the molten metal scattered in the sampling chamber 8 is released from the gas vent hole 9. On the gas vent hole 9 to close the gas vent hole 9 at an early stage. Since the sampler 4 is made of a metal such as steel for the purpose of solidifying the molten metal, when the molten metal is scattered toward the gas vent hole 9, the sampler 4 is solidified there and closes the gas vent hole 9. Will end up.
【０００９】そして、このように早期にガス抜き孔９が
閉塞されると、以後は試料採取室８内のガスを好適に排
出することができなくなり、その結果、試料採取室８に
充填された溶融金属中に残留エアーを巻き込み、凝固試
料中に巣を生じてしまい、健全な凝固試料を採取できな
いという問題がある。When the gas vent hole 9 is closed early in this way, the gas in the sampling chamber 8 cannot be discharged properly thereafter, and as a result, the sampling chamber 8 is filled with the gas. There is a problem in that residual air is entrained in the molten metal to form cavities in the solidified sample, and a sound solidified sample cannot be collected.
【００１０】ところで、この点に関して、従来では、試
料採取室８に向かう溶融金属の流入速度を制御するた
め、サンプラーの設計時にガス抜き孔９の大きさや数を
設定していたが、この場合は、次のような問題があるこ
とが知見された。Regarding this point, in the past, in order to control the inflow velocity of the molten metal toward the sampling chamber 8, the size and the number of the gas vent holes 9 were set at the time of designing the sampler, but in this case, , It was found that there are the following problems.
【００１１】即ち、ガス抜き孔９を大きくすると、試料
採取室８に充填された溶融金属がガス抜き孔９から溢れ
出し、サンプラー４の外側に溢出した状態で不要凝固金
属を形成してしまう。そして、この不要凝固金属は、ガ
ス抜き孔９を介して試料採取室８内の凝固試料に連結さ
れているため、試料採取作業の後に、サンプラー４から
凝固試料を取り出すことが極めて困難になる。That is, when the gas vent hole 9 is enlarged, the molten metal filled in the sampling chamber 8 overflows from the gas vent hole 9 and forms an unnecessary solidified metal in the state of overflowing the outside of the sampler 4. Since this unnecessary solidified metal is connected to the solidified sample in the sampling chamber 8 through the gas vent hole 9, it becomes extremely difficult to take the solidified sample out of the sampler 4 after the sampling operation.
【００１２】一方、溶融金属が溢出しないようにガス抜
き孔９を小さく形成すると共に、複数のガス抜き孔９を
設ける場合は、比較的早期にガス抜き孔が閉塞されるう
え、サンプラー４の加工コストが高くなる等の問題があ
る。On the other hand, when the gas vent holes 9 are formed small so that the molten metal does not overflow and a plurality of gas vent holes 9 are provided, the gas vent holes are closed relatively early and the sampler 4 is processed. There are problems such as high cost.
【００１３】[0013]
【課題を解決するための手段】本発明は、前記課題を解
決するため、試料採取室に向かう溶融金属の流入速度を
制御するに際し、その制御を導入管の部分において行い
得るようにした下注式溶融金属試料採取装置を提供する
ものであり、その第一の手段として構成したところは、
下部の流入開口から溶融金属を流入せしめる耐熱保温性
を有する導入管と、該導入管の上部に連通された溶融金
属を充填凝固せしめる試料採取室を構成すると共に、該
試料採取室にガス抜き孔を形成したサンプラーとを具備
して成る下注式溶融金属試料採取装置において、前記導
入管の内部に、流入開口に臨む径小な絞り部と、サンプ
ラーの試料採取室に臨む径大な拡張部とを形成した点に
ある。In order to solve the above-mentioned problems, the present invention provides a subcontracting method for controlling the inflow rate of molten metal toward a sampling chamber so that the control can be performed at a portion of an introduction pipe. The present invention provides a molten metal sampling device, which is configured as a first means thereof.
Introducing a heat-resistant and heat-insulating pipe for injecting molten metal from an inflow opening in the lower part, and a sampling chamber for filling and solidifying the molten metal communicated with the upper part of the introductory pipe, and a gas vent hole in the sampling chamber In the injecting molten metal sampling device, which comprises a sampler in which the sampler is formed, a small-diameter squeezing portion facing the inflow opening and a large-diameter expanding portion facing the sampling chamber of the sampler inside the introducing pipe It is in the point that formed and.
【００１４】本発明の実施態様において、前記絞り部の
内径は、拡張部の内径に対して１／２ないし１／１０の
範囲内に構成することが好ましい。In the embodiment of the present invention, it is preferable that the inner diameter of the throttle portion is within a range of 1/2 to 1/10 of the inner diameter of the expansion portion.
【００１５】また、本発明の実施態様において、前記絞
り部と拡張部の間に拡径テーパ部を形成することが好ま
しく、この際、拡径テーパ部の軸線に対するテーパ角度
を５度以上に構成することが好ましい。Further, in the embodiment of the present invention, it is preferable that a diameter-expanded taper portion is formed between the narrowed portion and the expansion portion. At this time, the taper angle of the diameter-expansion taper portion with respect to the axis is set to 5 degrees or more. Preferably.
【００１６】また、本発明が第二の手段として構成した
ところは、下部の流入開口から溶融金属を流入せしめる
耐熱保温性を有する導入管と、該導入管の上部に連通さ
れた溶融金属を充填凝固せしめる試料採取室を構成する
と共に、該試料採取室にガス抜き孔を形成したサンプラ
ーとを具備して成る下注式溶融金属試料採取装置におい
て、前記導入管の内部に、流入開口に臨む径大な導入部
と、サンプラーの試料採取室に臨む径大な拡張部と、導
入部及び拡張部の間に配置された径小な絞り部とを形成
した点にある。Further, the present invention is configured as the second means, in which the introduction pipe having heat-resistant and heat-retaining properties for allowing the molten metal to flow in from the lower inflow opening and the molten metal communicated with the upper part of the introduction pipe are filled. In a down-flowing molten metal sampler comprising a sample-collecting chamber for solidification and a sampler having a gas vent hole in the sample-collecting chamber, a diameter facing an inflow opening inside the introducing pipe. The point is that a large introduction part, a large-diameter expansion part facing the sample collection chamber of the sampler, and a small-diameter narrowed part arranged between the introduction part and the expansion part are formed.
【００１７】本発明の実施態様において、前記導入部と
絞り部の間に縮径テーパ部を形成すると共に、前記絞り
部と拡張部の間に拡径テーパ部を形成し、絞り部により
オリフィスを構成することが好ましい。In an embodiment of the present invention, a tapered taper portion is formed between the introduction portion and the throttle portion, and a tapered taper portion is formed between the throttle portion and the expanded portion, and the orifice portion is formed by the throttle portion. It is preferable to configure.
【００１８】更に、本発明が第三の手段として構成した
ところは、前記絞り部と拡張部の軸線を相互に偏位して
配置せしめることにより、導入管の溶融金属流路を曲折
せしめた点にある。Further, the third aspect of the present invention is that the molten metal flow path of the introduction pipe is bent by disposing the axes of the narrowed portion and the expanded portion so as to be offset from each other. It is in.
【００１９】[0019]
【実施例】以下図面に基づき本発明の実施例を詳述する
が、本発明の特徴は、導入管の形状の点に存在してお
り、プローブ本体の構成並びにサンプラーの構成は、上
述した従来例と同様であるから、同様の構成部分は図４
の符号と同じ符号で示し、詳細な説明は上記を援用し省
略する。Embodiments of the present invention will now be described in detail with reference to the drawings. The feature of the present invention lies in the shape of the introduction tube, and the structure of the probe main body and the structure of the sampler are the same as those of the conventional ones. Since it is similar to the example, similar components are shown in FIG.
The same reference numerals as in FIG.
【００２０】（第１実施態様）図１に示す第１実施態様
において、導入管５の内部には、流入開口６に臨む径小
な絞り部２１と、サンプラー４の試料採取室８に臨む径
大な拡張部２２とが形成されている。(First Embodiment) In the first embodiment shown in FIG. 1, a small diameter portion 21 facing the inflow opening 6 and a diameter facing the sampling chamber 8 of the sampler 4 are provided inside the introducing pipe 5. A large expansion portion 22 is formed.
【００２１】即ち、絞り部２１の内径ｄと、拡張部２２
の内径Ｄは、ｄ＜Ｄに形成され、好ましくは、ｄ／Ｄ＝
１／２〜１／１０に形成されている。That is, the inner diameter d of the narrowed portion 21 and the expanded portion 22
Has an inner diameter D of d <D, preferably d / D =
It is formed in 1/2 to 1/10.
【００２２】また、前記絞り部２１と拡張部２２は、相
互に軸線を偏位して配置することにより、導入管５の溶
融金属流路を曲折せしめている。図例の場合、拡張部２
２の軸線をプローブ本体１の軸線と平行に配置する一
方、絞り部２１の軸線を拡張部２２の軸線と直交状に交
差せしめ、絞り部２１及び流入開口６を拡張部２２の側
部に配置している。The narrowed portion 21 and the expanded portion 22 are arranged with their axes deviated from each other so that the molten metal flow path of the introduction pipe 5 is bent. In the case of the example shown in FIG.
The axis of 2 is arranged parallel to the axis of the probe main body 1, while the axis of the narrowed portion 21 intersects the axis of the expanded portion 22 at right angles, and the narrowed portion 21 and the inflow opening 6 are arranged on the side of the expanded portion 22. is doing.
【００２３】この第１実施態様において、絞り部２１の
形状及び配置を種々の態様に構成することができる。例
えば、図１（Ａ）に示す第１例では、絞り部２１を拡張
部２２の側部に突出せしめている。In the first embodiment, the shape and arrangement of the throttle portion 21 can be configured in various ways. For example, in the first example shown in FIG. 1A, the narrowed portion 21 is made to project to the side portion of the expansion portion 22.
【００２４】また、図１（Ｂ）に示す第２例では、絞り
部２１を拡張部２２の先端側部から内向きに形成してい
る。Further, in the second example shown in FIG. 1B, the narrowed portion 21 is formed inward from the tip side portion of the expansion portion 22.
【００２５】更に、図１（Ｃ）に示す第３例では、絞り
部２１を拡張部２２の先端からやや後退した位置におい
て側部から内向きに形成している。Further, in the third example shown in FIG. 1C, the throttle portion 21 is formed inward from the side portion at a position slightly retracted from the tip of the expansion portion 22.
【００２６】そこで、この第１実施態様によれば、流入
開口６から溶融金属が流入するに際し、溶融金属は、絞
り部２１により流量を制限される一方、拡張部２２にお
いて拡大流れとされるため、流速を低下せしめられる。
また、絞り部２１と拡張部２２の軸線を偏位せしめ曲折
された流路を構成しているので、曲がり流れによる流速
エネルギーの損失を生起せしめられ、この点からも溶融
金属の流速を低下せしめられる。Therefore, according to the first embodiment, when the molten metal flows in through the inflow opening 6, the flow rate of the molten metal is limited by the throttle portion 21 and is expanded by the expansion portion 22. , The flow velocity can be reduced.
Further, since the axis of the narrowed portion 21 and the expanded portion 22 are deviated to form a bent flow path, a loss of flow velocity energy due to a curved flow is caused, and from this point also the flow velocity of the molten metal is reduced. To be
【００２７】従って、サンプラー４の試料採取室８に流
入せしめられる溶融金属は、従来のような噴流又は乱流
を伴って試料採取室８内で飛散されることはなく、流速
を制御されつつ適切な流速の下で試料採取室８に充填さ
れる。Therefore, the molten metal flowing into the sample collecting chamber 8 of the sampler 4 is not scattered in the sample collecting chamber 8 with a jet flow or a turbulent flow as in the conventional case, and the flow velocity is appropriately controlled. The sampling chamber 8 is filled under various flow rates.
【００２８】（第２実施態様）図２に示す第２実施態様
において、導入管５の内部には、流入開口６に臨む径小
な絞り部２１と、サンプラー４の試料採取室８に臨む径
大な拡張部２２とが形成され、絞り部２１の軸線と拡張
部２２の軸線を同軸上でストレートに配置している。(Second Embodiment) In the second embodiment shown in FIG. 2, the introduction pipe 5 has a small diameter portion 21 facing the inflow opening 6 and a diameter facing the sampling chamber 8 of the sampler 4 inside. A large expanded portion 22 is formed, and the axis of the narrowed portion 21 and the axis of the expanded portion 22 are arranged coaxially and straight.
【００２９】前記絞り部２１の内径ｄと、拡張部２２の
内径Ｄは、ｄ＜Ｄに形成され、好ましくは、ｄ／Ｄ＝１
／２〜１／１０に形成されている。The inner diameter d of the narrowed portion 21 and the inner diameter D of the expanded portion 22 are formed such that d <D, preferably d / D = 1.
/ 2 to 1/10.
【００３０】この第２実施態様においても、異なる態様
とした種々の実施例を構成することが可能であり、例え
ば、図２（Ａ）に示す第１例では、絞り部２１と拡張部
２２の間に拡径テーパ部２３を形成している。この拡径
テーパ部２３は、好ましくは、該拡径テーパ部２３の軸
線に対するテーパ角度を５度以上に構成している。Also in this second embodiment, various embodiments having different aspects can be constructed. For example, in the first example shown in FIG. An enlarged taper portion 23 is formed between them. The enlarged diameter tapered portion 23 preferably has a taper angle of 5 degrees or more with respect to the axis of the enlarged diameter tapered portion 23.
【００３１】一方、図２（Ｂ）に示す第２例では、絞り
部２１と拡張部２２の間に異径段部２４を形成してい
る。On the other hand, in the second example shown in FIG. 2B, a different diameter step portion 24 is formed between the narrowed portion 21 and the expanded portion 22.
【００３２】更に、図２（Ｃ）に示す第３例では、全体
が拡張部２２を形成する導入管５の先端に内向きフラン
ジを形成し、これにより径小とされた流入開口６自体に
より絞り部２１を構成している。Further, in the third example shown in FIG. 2 (C), an inward flange is formed at the tip of the introduction pipe 5 which entirely forms the expansion portion 22, and the inflow opening 6 itself having a small diameter is thereby formed. The diaphragm 21 is configured.
【００３３】尚、図示しないが、この第２実施態様にお
いて、流入開口６を導入管５の側部に開口せしめること
により、溶融金属流路を曲折せしめても良い。Although not shown, in the second embodiment, the molten metal passage may be bent by opening the inflow opening 6 to the side of the introduction pipe 5.
【００３４】そこで、この第２実施態様によれば、流入
開口６から溶融金属が流入するに際し、溶融金属は、絞
り部２１により流量を制限される一方、拡張部２２にお
いて拡大流れとされるため、流速を低下せしめられる。
従って、サンプラー４の試料採取室８に流入せしめられ
る溶融金属は、従来のような噴流又は乱流を伴って試料
採取室８内で飛散されることはなく、流速を制御されつ
つ適切な流速の下で試料採取室８に充填される。Therefore, according to the second embodiment, when the molten metal flows in from the inflow opening 6, the flow rate of the molten metal is limited by the throttle portion 21 and is expanded by the expansion portion 22. , The flow velocity can be reduced.
Therefore, the molten metal flowing into the sample collection chamber 8 of the sampler 4 is not scattered in the sample collection chamber 8 with a jet flow or turbulent flow as in the conventional case, and the flow velocity is controlled and an appropriate flow velocity is maintained. Below, the sampling chamber 8 is filled.
【００３５】（第３実施態様）図３に示す第３実施態様
において、導入管５の内部には、流入開口６に臨む径大
な導入部２５と、サンプラー４の試料採取室８に臨む径
大な拡張部２２と、導入部２５及び拡張部２２の間に配
置された径小な絞り部２１とが形成され、導入部２５の
軸線、絞り部２１の軸線、拡張部２２の軸線を同軸上で
ストレートに配置している。(Third Embodiment) In the third embodiment shown in FIG. 3, a large-diameter introducing portion 25 facing the inflow opening 6 and a diameter facing the sampling chamber 8 of the sampler 4 are provided inside the introducing pipe 5. A large expansion portion 22 and a small-diameter throttle portion 21 arranged between the introduction portion 25 and the extension portion 22 are formed, and the axis of the introduction portion 25, the axis of the throttle portion 21, and the axis of the extension portion 22 are coaxial. It is arranged straight above.
【００３６】前記絞り部２１の内径ｄと、拡張部２２の
内径Ｄは、ｄ＜Ｄに形成され、好ましくは、ｄ／Ｄ＝１
／２〜１／１０に形成されている。The inner diameter d of the narrowed portion 21 and the inner diameter D of the expanded portion 22 are formed so that d <D, preferably d / D = 1.
/ 2 to 1/10.
【００３７】この第３実施態様においても、異なる態様
とした種々の実施例を構成することが可能であり、例え
ば、図３（Ａ）に示す第１例では、導入部２５と絞り部
２１の間に縮径テーパ部２６を形成すると共に、絞り部
２１と拡張部２２の間に拡径テーパ部２３を形成し、こ
れにより絞り部２１がオリフィスを構成する。前記縮径
テーパ部２６及び拡径テーパ部２３は、何れも、好まし
くは、両テーパ部２６、２３の軸線に対するテーパ角度
を５度以上に構成している。Also in the third embodiment, various embodiments having different forms can be constructed. For example, in the first example shown in FIG. A tapered taper portion 26 is formed therebetween, and an expanded taper portion 23 is formed between the narrowed portion 21 and the expanded portion 22, whereby the narrowed portion 21 constitutes an orifice. It is preferable that both the taper portion 26 and the taper portion 23 have a taper angle of 5 degrees or more with respect to the axes of the taper portions 26 and 23.
【００３８】一方、図３（Ｂ）に示す第２例では、導入
部２５と絞り部２１の間、絞り部２１と拡張部２２の間
に、それぞれ異径段部２７、２４を形成している。On the other hand, in the second example shown in FIG. 3B, different diameter step portions 27 and 24 are formed between the introducing portion 25 and the narrowing portion 21 and between the narrowing portion 21 and the expanding portion 22, respectively. There is.
【００３９】また、図３（Ｃ）に示す第３例では、導入
部２５と絞り部２１の間に異径段部２７を形成する一
方、絞り部２１と拡張部２２の間に拡径テーパ部２３を
形成している。Further, in the third example shown in FIG. 3C, a step of different diameter 27 is formed between the introduction portion 25 and the narrowed portion 21, while a diameter-expanded taper is formed between the narrowed portion 21 and the expanded portion 22. The part 23 is formed.
【００４０】更に、図３（Ｄ）に示す第４例では、導入
部２５と絞り部２１の間に縮径テーパ部２６を形成する
一方、絞り部２１と拡張部２２の間に異径段部２４を形
成している。Further, in the fourth example shown in FIG. 3 (D), a tapered taper portion 26 is formed between the introduction portion 25 and the narrowed portion 21, while a different diameter step is formed between the narrowed portion 21 and the expanded portion 22. The part 24 is formed.
【００４１】尚、図示しないが、この第３実施態様にお
いて、流入開口６を導入管５の側部に開口せしめること
により、溶融金属流路を曲折せしめても良い。Although not shown, in the third embodiment, the molten metal flow path may be bent by opening the inflow opening 6 to the side portion of the introduction pipe 5.
【００４２】そこで、この第３実施態様によれば、流入
開口６から溶融金属が流入するに際し、溶融金属は、径
大な導入部２５から絞り部２１に移行する際に収斂さ
れ、該絞り部２１をオリフィスとして流量を制限された
後、拡張部２２において拡大流れとされるため、流速を
低下せしめられる。従って、サンプラー４の試料採取室
８に流入せしめられる溶融金属は、従来のような噴流又
は乱流を伴って試料採取室８内で飛散されることはな
く、流速を制御されつつ適切な流速の下で試料採取室８
に充填される。Therefore, according to the third embodiment, when the molten metal flows in from the inflow opening 6, the molten metal is converged when the molten metal moves from the large-diameter introducing portion 25 to the narrowing portion 21, and the molten metal is converged. After the flow rate is limited by using the orifice 21 as the orifice, the flow is expanded in the expansion portion 22, so that the flow velocity can be reduced. Therefore, the molten metal flowing into the sample collection chamber 8 of the sampler 4 is not scattered in the sample collection chamber 8 with a jet flow or turbulent flow as in the conventional case, and the flow velocity is controlled and an appropriate flow velocity is maintained. Below sampling room 8
To be filled.
【００４３】[0043]
【発明の効果】請求項１ないし３に記載の本発明によれ
ば、導入管５の絞り部２１と拡張部２２により溶融金属
の流入速度及び流入量を制御するので、導入管５を経て
サンプラー４の試料採取室８に流入される溶融金属は、
該試料採取室８内で噴流や乱流を伴うことなく好適に充
填される。このため、従来のように溶融金属の飛散によ
りサンプラー４のガス抜き孔９を早期に閉塞し、試料採
取室８内に充填凝固される採取試料中に残存エアーを巻
き込んでしまうことはなく、巣のない健全な試料を採取
できるという効果がある。According to the present invention as set forth in claims 1 to 3, since the inflow speed and the inflow rate of the molten metal are controlled by the throttle portion 21 and the expansion portion 22 of the introduction pipe 5, the sampler is passed through the introduction pipe 5. The molten metal flowing into the sampling chamber 8 of No. 4 is
It is preferably filled in the sampling chamber 8 without any jet flow or turbulent flow. Therefore, unlike the conventional case, the gas vent holes 9 of the sampler 4 are closed early by the scattering of the molten metal, and the residual air is not entrained in the collected sample that is filled and solidified in the sampling chamber 8, and the nest There is an effect that a sound sample with no noise can be collected.
【００４４】請求項４及び５に記載の本発明によれば、
前記効果に加えて、導入管５が径大な導入部２５に引き
続いて絞り部２１と拡張部２２を形成しているので、絞
り部２１をオリフィスとして溶融金属の流速及び流量を
確実容易に制御することができ、試料採取室８による溶
融金属の充填採取作業を安定ならしめることができると
いう効果がある。According to the present invention as set forth in claims 4 and 5,
In addition to the above effects, since the introduction pipe 5 forms the narrowed portion 21 and the expanded portion 22 following the large-diametered introduced portion 25, the flow rate and flow rate of the molten metal can be reliably and easily controlled by using the narrowed portion 21 as an orifice. Therefore, there is an effect that the filling and sampling work of the molten metal by the sampling chamber 8 can be stabilized.
【００４５】請求項６に記載の本発明によれば、前記構
成に加えて、絞り部２１と拡張部２２の軸線を偏位せし
めることにより曲折した溶融金属流路を構成しているの
で、流入された溶融金属に曲がり流れによる流速エネル
ギーの損失を生起せしめ、この点から溶融金属の流速制
御を行うため、巣のない健全な試料を採取するという所
期目的を一層確実に達することができるという効果があ
る。According to the sixth aspect of the present invention, in addition to the above structure, a bent molten metal flow path is formed by displacing the axes of the narrowed portion 21 and the expanded portion 22. The loss of flow velocity energy due to a curved flow is caused in the molten metal that has been generated, and since the flow velocity of the molten metal is controlled from this point, the intended purpose of collecting a healthy sample without burrs can be more reliably achieved. effective.
【図面の簡単な説明】[Brief description of drawings]
【図１】図１は、本発明に係る下注式溶融金属試料採取
装置における第１実施態様の要部を示す縦断面図であ
り、この第１実施態様に基づいて、（Ａ）は第１実施
例、（Ｂ）は第２実施例、（Ｃ）は第３実施例を示す縦
断面図である。FIG. 1 is a vertical cross-sectional view showing an essential part of a first embodiment of a submersion type molten metal sampling apparatus according to the present invention. Based on this first embodiment, (A) shows FIG. 3 is a longitudinal sectional view showing a first embodiment, (B) a second embodiment, and (C) a third embodiment.
【図２】図２は、本発明に係る下注式溶融金属試料採取
装置における第２実施態様の要部を示す縦断面図であ
り、この第２実施態様に基づいて、（Ａ）は第１実施
例、（Ｂ）は第２実施例、（Ｃ）は第３実施例を示す縦
断面図である。FIG. 2 is a vertical cross-sectional view showing a main part of a second embodiment of a submersion type molten metal sampling apparatus according to the present invention. Based on this second embodiment, (A) shows FIG. 3 is a longitudinal sectional view showing a first embodiment, (B) a second embodiment, and (C) a third embodiment.
【図３】図３は、本発明に係る下注式溶融金属試料採取
装置における第３実施態様の要部を示す縦断面図であ
り、この第３実施態様に基づいて、（Ａ）は第１実施
例、（Ｂ）は第２実施例、（Ｃ）は第３実施例、（Ｄ）
は第４実施例を示す縦断面図である。FIG. 3 is a vertical cross-sectional view showing an essential part of a third embodiment of a submersion type molten metal sampling apparatus according to the present invention. Based on the third embodiment, (A) shows 1st Example, (B) 2nd Example, (C) 3rd Example, (D)
[FIG. 7] is a vertical sectional view showing a fourth embodiment.
【図４】図４は、従来例に係る下注式溶融金属試料採取
装置を示す縦断面図である。FIG. 4 is a vertical cross-sectional view showing a down-flowing type molten metal sampling device according to a conventional example.
１ プローブ本体 ４ サンプラー ５ 導入管 ６ 流入開口 ８ 試料採取室 ９ ガス抜き孔 ２１ 絞り部 ２２ 拡張部 ２３ 拡径テーパ部 ２４ 異径段部 ２５ 導入部 ２６ 縮径テーパ部 ２７ 異径段部 1 Probe Main Body 4 Sampler 5 Inlet Pipe 6 Inlet Opening 8 Sampling Chamber 9 Gas Venting Hole 21 Throttling Part 22 Expanded Part 23 Expanded Tapered Part 24 Different Diameter Stepped Part 25 Introduced Part 26 Reduced Diameter Tapered Part 27 Different Diameter Stepped Part
Claims (6)
める耐熱保温性を有する導入管と、該導入管の上部に連
通された溶融金属を充填凝固せしめる試料採取室を構成
すると共に、該試料採取室にガス抜き孔を形成したサン
プラーとを具備して成る下注式溶融金属試料採取装置に
おいて、前記導入管の内部に、流入開口に臨む径小な絞
り部と、サンプラーの試料採取室に臨む径大な拡張部と
を形成して成ることを特徴とする下注式溶融金属試料採
取装置。1. A sample-collecting chamber having a heat-resistant and heat-retaining property for allowing molten metal to flow in from a lower inflow opening and a sampling chamber for filling and solidifying the molten metal, which is communicated with the upper part of the introducing pipe, and the sampling is performed. In a submersion type molten metal sampler comprising a sampler having a gas vent hole in a chamber, a small-diameter throttle part facing the inflow opening is provided inside the introduction pipe, and a sampler chamber of the sampler. A submersion-type molten metal sampling device, characterized in that it comprises a large-diameter expanded portion.
を１／２ないし１／１０の範囲内に構成したことを特徴
とする請求項１に記載の下注式溶融金属試料採取装置。2. The under-cast molten metal sampler according to claim 1, wherein the inner diameter of the narrowed portion is within the range of 1/2 to 1/10 with respect to the inner diameter of the expanded portion. .
を形成し、該拡径テーパ部の軸線に対するテーパ角度を
５度以上に構成したことを特徴とする請求項１又は２に
記載の下注式溶融金属試料採取装置。3. A diameter-expanded taper portion is formed between the narrowed portion and the expansion portion, and the taper angle of the diameter-expansion taper portion with respect to the axis is set to 5 degrees or more. The above-mentioned submersible molten metal sampling device.
める耐熱保温性を有する導入管と、該導入管の上部に連
通された溶融金属を充填凝固せしめる試料採取室を構成
すると共に、該試料採取室にガス抜き孔を形成したサン
プラーとを具備して成る下注式溶融金属試料採取装置に
おいて、前記導入管の内部に、流入開口に臨む径大な導
入部と、サンプラーの試料採取室に臨む径大な拡張部
と、導入部及び拡張部の間に配置された径小な絞り部と
を形成して成ることを特徴とする下注式溶融金属試料採
取装置。4. A sample collecting chamber is provided which has a heat-resistant and heat-retaining inlet pipe for allowing molten metal to flow in through a lower inlet opening and a sampling chamber for filling and solidifying the molten metal which is communicated with the upper portion of the inlet pipe. In a submersion type molten metal sampler comprising a sampler with a gas vent hole formed in a chamber, a large-diameter introduction part facing the inflow opening is provided inside the introduction pipe, and a sampler chamber of the sampler. A submersion-type molten metal sampling device comprising a large-diameter expanded part and a small-diameter narrowed part arranged between the introduction part and the expanded part.
を形成すると共に、前記絞り部と拡張部の間に拡径テー
パ部を形成し、絞り部によりオリフィスを構成したこと
を特徴とする請求項４に記載の下注式溶融金属試料採取
装置。5. A diameter-reduction taper portion is formed between the introduction portion and the throttle portion, and a diameter-expansion taper portion is formed between the throttle portion and the expansion portion, and the orifice portion is constituted by the throttle portion. The molten metal sampling device according to claim 4, wherein
して配置せしめることにより、導入管の溶融金属流路を
曲折せしめて成ることを特徴とする請求項４ないし５の
何れかに記載の下注式溶融金属試料採取装置。6. The molten metal flow path of the introduction pipe is bent by arranging the axes of the narrowed portion and the expanded portion so as to be offset from each other. The submerged molten metal sampling device described in.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5081223A JPH06265539A (en) | 1993-03-15 | 1993-03-15 | Lower injection molten metal sampler |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5081223A JPH06265539A (en) | 1993-03-15 | 1993-03-15 | Lower injection molten metal sampler |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH06265539A true JPH06265539A (en) | 1994-09-22 |
Family
ID=13740487
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP5081223A Pending JPH06265539A (en) | 1993-03-15 | 1993-03-15 | Lower injection molten metal sampler |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH06265539A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE10360625B3 (en) * | 2003-12-19 | 2005-01-13 | Heraeus Electro-Nite International N.V. | Sampler for molten metal comprises sample chamber mounted in support tube with inlet section which carries quartz glass inlet tube which curves in at both ends |
| JP2012001815A (en) * | 2010-06-18 | 2012-01-05 | Heraeus Electro-Nite Internatl Nv | Measuring probe for measuring and taking samples in metal melt |
| US8141439B2 (en) | 2008-11-17 | 2012-03-27 | Heraeus Electro-Nite International N.V. | Device for sampling metal melts |
-
1993
- 1993-03-15 JP JP5081223A patent/JPH06265539A/en active Pending
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE10360625B3 (en) * | 2003-12-19 | 2005-01-13 | Heraeus Electro-Nite International N.V. | Sampler for molten metal comprises sample chamber mounted in support tube with inlet section which carries quartz glass inlet tube which curves in at both ends |
| JP2005181298A (en) * | 2003-12-19 | 2005-07-07 | Heraeus Electro-Nite Internatl Nv | Sample collecting apparatus of molten metal |
| JP4570937B2 (en) * | 2003-12-19 | 2010-10-27 | ヘレーウス エレクトロ−ナイト インターナシヨナル エヌ ヴイ | Molten metal sampling device |
| US8001856B2 (en) | 2003-12-19 | 2011-08-23 | Heraeus Electro-Nite International N.V. | Sampling device |
| US8141439B2 (en) | 2008-11-17 | 2012-03-27 | Heraeus Electro-Nite International N.V. | Device for sampling metal melts |
| JP2012001815A (en) * | 2010-06-18 | 2012-01-05 | Heraeus Electro-Nite Internatl Nv | Measuring probe for measuring and taking samples in metal melt |
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