JP3377326B2 - Melt flow detector for vanishing model casting - Google Patents
Melt flow detector for vanishing model castingInfo
- Publication number
- JP3377326B2 JP3377326B2 JP04605195A JP4605195A JP3377326B2 JP 3377326 B2 JP3377326 B2 JP 3377326B2 JP 04605195 A JP04605195 A JP 04605195A JP 4605195 A JP4605195 A JP 4605195A JP 3377326 B2 JP3377326 B2 JP 3377326B2
- Authority
- JP
- Japan
- Prior art keywords
- model
- molten metal
- optical fiber
- end surface
- vanishing
- 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 - Fee Related
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- Molds, Cores, And Manufacturing Methods Thereof (AREA)
Description
【０００１】[0001]
【産業上の利用分野】本発明は、消失模型が溶湯と置換
する際の溶湯の湯流れを検知する装置に関するものであ
る。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a device for detecting the flow of molten metal when a vanishing model replaces the molten metal.
【０００２】[0002]
【従来の技術】従来、鋳型中のキャビティの所定位置に
電極を配置しておき、キャビティ内に溶湯を注湯する際
に生じる電極と溶湯との接触を検出して湯流れを検知す
る技術が知られている（例えば、特開昭５７−９４６２
５号公報記載）。2. Description of the Related Art Conventionally, there is a technique in which an electrode is placed at a predetermined position in a cavity in a mold, and a contact between the electrode and the molten metal generated when pouring the molten metal into the cavity is detected to detect the flow of molten metal. Known (for example, JP-A-57-9462)
No. 5 publication).
【０００３】[0003]
【発明が解決しようとする課題】上記従来の技術は、消
失模型鋳造法に適用可能である。即ち、消失模型中に電
極を埋設しておき、電極を埋設した部分の消失模型が溶
湯と置換する際に生じる溶湯と電極との接触を検出する
ことにより、溶湯が消失模型と置換する際の溶湯の湯流
れを検知することが可能である。The above conventional technique can be applied to the vanishing model casting method. That is, by burying the electrode in the disappearance model and detecting the contact between the molten metal and the electrode that occurs when the disappearance model in the portion where the electrode is embedded replaces the melt, It is possible to detect the flow of molten metal.
【０００４】一方、溶湯が消失模型と置換する際は、溶
湯が高温であるため溶湯近傍の消失模型が溶湯の進行に
先立って熱分解する。この熱分解により発生した分解ガ
スが熱分解に伴って溶湯と消失模型との間に生じた空間
内に充満され、分解ガス相を形成し、分解ガスの発生量
に応じたガス圧で溶湯が進行方向と逆向きに押される。
そのため、分解ガス相の存在により溶湯の進行が妨げら
れ、溶湯が消失模型と置換する速度が遅れることとな
る。従って、分解ガス相の存在を検知して分解ガス相の
存在が溶湯と消失模型との置換速度に及ぼす影響を知る
ことは湯流れ挙動を解析し、湯流れを制御する上で重要
である。On the other hand, when the molten metal is replaced with the extinction model, the extinction model in the vicinity of the molten metal is thermally decomposed prior to the progress of the molten metal because of the high temperature of the molten metal. The decomposition gas generated by this thermal decomposition is filled in the space created between the molten metal and the disappearance model due to the thermal decomposition, forming a decomposition gas phase, and the molten metal is generated at a gas pressure according to the amount of decomposition gas generated. It is pushed in the direction opposite to the traveling direction.
Therefore, the presence of the decomposed gas phase hinders the progress of the molten metal, and the rate at which the molten metal replaces the disappearance model is delayed. Therefore, it is important to analyze the molten metal flow behavior and control the molten metal flow by detecting the presence of the decomposed gas phase and knowing the effect of the presence of the decomposed gas phase on the replacement rate of the molten metal and the disappearance model.
【０００５】しかし、上記従来の技術では分解ガス相の
存在を検知することはできないという問題点があった。However, the conventional technique described above has a problem in that the presence of the decomposed gas phase cannot be detected.
【０００６】そこで、本発明は、上記問題点を解消し、
消失模型鋳造において溶湯が消失模型と置換する際の湯
流れを検知するのみでなく、溶湯が消失模型を置換する
際に生じる分解ガス相の存在を検知することのできる溶
湯流検知装置を提供することを目的とする。Therefore, the present invention solves the above problems,
Provided is a molten metal flow detection device capable of not only detecting the flow of molten metal when the molten metal replaces the lost model in the lost model casting but also the presence of a decomposed gas phase generated when the molten metal replaces the lost model. The purpose is to
【０００７】[0007]
【課題を解決するための手段】上記問題点を解決するた
め、請求項１記載の消失模型鋳造の溶湯流検知装置は、
一端に入射した光を他端に伝達する複数本の光ファイバ
と、内部に挿入した複数本の光ファイバの各一端面をそ
れぞれ所定位置に配置した消失模型と、該光ファイバの
各一端面を含む該消失模型の断面と同一形状に形成され
た表面を有し、該断面上に配置された該光ファイバの一
端面と同位置になるように該光ファイバの他端面を該表
面上に配置した模型と、該模型の表面上に配置した該光
ファイバの他端面を撮像して該他端面の輝度の変化を追
跡する輝度変化追跡装置とから形成されたことを特徴と
する。請求項２記載の消失模型鋳造の溶湯流検知装置
は、請求項１記載の模型の表面が平面又は凹凸面である
ことを特徴とする。In order to solve the above-mentioned problems, a molten metal flow detection device for vanishing model casting according to claim 1,
A plurality of optical fibers for transmitting the light incident on one end to the other end, a disappearance model in which each one end face of the plurality of optical fibers inserted inside is arranged at a predetermined position, and each one end face of the optical fiber Including a surface formed in the same shape as the cross section of the vanishing model, and disposing the other end surface of the optical fiber on the surface so as to be at the same position as the one end surface of the optical fiber arranged on the cross section. And a brightness change tracking device that images the other end surface of the optical fiber arranged on the surface of the model and tracks the change in brightness of the other end surface. A molten metal flow detection device for vanishing model casting according to claim 2 is characterized in that the surface of the model according to claim 1 is a flat surface or an uneven surface.
【０００８】[0008]
【作用】消失模型は発光せず、溶湯が該消失模型と置換
する際に生じる分解ガスと該溶湯とでは、その発する光
の強さが異なる。そのため、光ファイバの一端面に入射
する光の強さに対応する該光ファイバの他端面の輝度を
輝度変化追跡装置で追跡することにより、該光ファイバ
の一端面が消失模型中にあるのか、分解ガス相中にある
のか、あるいは溶湯中にあるのかを検知することができ
る。さらに、該光ファイバの他端面の輝度変化を複数本
の光ファイバの該他端面を配置した模型表面全体にわた
って追跡すると、該溶湯が該消失模型と置換する際の湯
流れを該溶湯の実際の流れに即して視覚的に検知するこ
とができる。The extinction model does not emit light, and the intensity of light emitted is different between the molten gas and the decomposition gas generated when the molten metal replaces the extinction model. Therefore, by tracking the brightness of the other end surface of the optical fiber corresponding to the intensity of light incident on one end surface of the optical fiber with a brightness change tracking device, whether one end surface of the optical fiber is in the disappearance model, It is possible to detect whether it is in the decomposed gas phase or in the molten metal. Furthermore, if the change in the brightness of the other end surface of the optical fiber is traced over the entire model surface on which the other end surfaces of the plurality of optical fibers are arranged, the molten metal flow when the molten metal replaces the disappeared model is It can be detected visually according to the flow.
【０００９】[0009]
【実施例】以下、本発明の実施例を図１〜３に基づいて
説明する。図１に基づいて本実施例の構成を説明する。
図１に示すように、鋳枠１中に充填した鋳物砂２内に塗
型剤３を塗布した消失模型４が埋設されている。消失模
型４は、上部に小径部５を有し、下部に大径部６を有す
る段付きの円柱状体であり、小径部５には上部，中央部
及び下部にそれぞれ光ファイバ７ａ，７ｂ，７ｃの一端
が挿入され、大径部６には図中右部，中央部及び左部に
それぞれ光ファイバ７ｄ，７ｅ，７ｆの一端が挿入され
ている。これらの光ファイバ７ａ，７ｂ，７ｃ，７ｄ，
７ｅ，７ｆは、０．８ｍｍ〜１．６ｍｍ程度の直径を有
する石英ガラス製であり、消失模型４の側面からそれぞ
れ所定の深度挿入され、光ファイバ７ａ，７ｂ，７ｃ，
７ｄ，７ｅ，７ｆのそれぞれの一端面８ａ，８ｂ，８
ｃ，８ｄ，８ｅ，８ｆが消失模型４の平面状の断面４ａ
上に並ぶように配置されている。Embodiments of the present invention will be described below with reference to FIGS. The configuration of this embodiment will be described with reference to FIG.
As shown in FIG. 1, a vanishing model 4 in which a mold coating agent 3 is applied is embedded in a molding sand 2 filled in a molding flask 1. The vanishing model 4 is a stepped columnar body having a small diameter portion 5 at the upper portion and a large diameter portion 6 at the lower portion, and the small diameter portion 5 has optical fibers 7a, 7b at the upper portion, the central portion and the lower portion, respectively. One end of the optical fibers 7d, 7e, and 7f is inserted into the large diameter portion 6 at the right portion, the central portion, and the left portion in the drawing, respectively. These optical fibers 7a, 7b, 7c, 7d,
7e and 7f are made of quartz glass having a diameter of about 0.8 mm to 1.6 mm, and are inserted to a predetermined depth from the side surface of the disappearing model 4, respectively, and the optical fibers 7a, 7b, 7c,
One end faces 8a, 8b, 8 of 7d, 7e, 7f, respectively
c, 8d, 8e and 8f are plane cross sections 4a of the vanishing model 4.
It is arranged so as to line up.
【００１０】光ファイバ７ａ，７ｂ，７ｃ，７ｄ，７
ｅ，７ｆの他端は、消失模型４の平面状の断面４ａと同
一形状に形成された平面状の表面１１を有する模型１２
中に挿入され、光ファイバ７ａ，７ｂ，７ｃ，７ｅ，７
ｆのそれぞれの他端面１０ａ，１０ｂ，１０ｃ，１０
ｄ，１０ｅ，１０ｆが断面４ａ上に配置されている光フ
ァイバ７ａ，７ｂ，７ｃ，７ｄ，７ｅ，７ｆの一端面８
ａ，８ｂ，８ｃ，８ｄ，８ｅ，８ｆと同じ位置関係を有
するように模型１２の表面１１上に配置されている。表
面１１は、消失模型４の小径部５の断面に対応する小径
部相当表面１１ａと消失模型４の大径部６の断面に対応
する大径部相当表面１１ｂとから形成されている。消失
模型４の断面４ａの上部に配置された光ファイバ７ａの
一端面８ａの他端面１０ａが小径部相当表面１１ａの上
部に配置され、同様に、一端面８ｂの他端面１０ｂが小
径部相当表面１１ａの中央部に、一端面８ｃの他端面１
０ｃが小径部相当表面１１ａの下部に、一端面８ｄの他
端面１０ｄが大径部相当表面１１ｂの右部に、一端面８
ｅの他端面１０ｅが大径部相当表面１１ｂの中央部に、
一端面８ｆの他端面１０ｆが大径部相当表面１１ｂの左
部に、それぞれ一端面８ａ，８ｂ，８ｃ，８ｄ，８ｅ，
８ｆの有する位置関係と同じ位置関係を有して配置され
ている。Optical fibers 7a, 7b, 7c, 7d, 7
The other ends of e and 7f are models 12 having a planar surface 11 formed in the same shape as the planar cross section 4a of the vanishing model 4.
Inserted in the optical fibers 7a, 7b, 7c, 7e, 7
The other end faces 10a, 10b, 10c, 10 of f
One end face 8 of the optical fibers 7a, 7b, 7c, 7d, 7e, 7f in which d, 10e, 10f are arranged on the cross section 4a
It is arranged on the surface 11 of the model 12 so as to have the same positional relationship as a, 8b, 8c, 8d, 8e, 8f. The surface 11 is formed of a small-diameter portion equivalent surface 11a corresponding to the cross section of the small-diameter portion 5 of the vanishing model 4 and a large-diameter portion equivalent surface 11b corresponding to the cross-section of the large-diameter portion 6 of the vanishing model 4. The other end surface 10a of the one end surface 8a of the optical fiber 7a arranged above the cross section 4a of the vanishing model 4 is arranged above the surface 11a corresponding to the small diameter portion, and similarly, the other end surface 10b of the one end surface 8b corresponds to the surface corresponding to the small diameter portion. At the center of 11a, the other end surface 1 of one end surface 8c
0c is on the lower portion of the surface 11a corresponding to the small diameter portion, and the other end surface 10d of the one end surface 8d is on the right portion of the surface 11b corresponding to the large diameter portion.
The other end surface 10e of e is located at the center of the large-diameter equivalent surface 11b,
The other end surface 10f of the one end surface 8f is located on the left side of the large-diameter equivalent surface 11b, and the one end surfaces 8a, 8b, 8c, 8d, 8e,
8f has the same positional relationship as that of 8f.
【００１１】模型１２の表面１１と対向する位置には、
輝度変化追跡装置１３が設けられている。輝度変化追跡
装置１３は、画像処理用システムで構成されてもよく、
ＴＶ記録装置であってもよい。画像処理用システムは、
画像入力装置、汎用計算機、外部記憶装置，標準キーボ
ード端末及び画像出力装置を備え、画像入力装置はＴＶ
カメラが用いられ、画像出力装置は、フレームメモリ，
Ｄ／Ａコンバータ，ＴＶモニタから形成された画像ディ
スプレイ装置が一般的である。ＴＶ記録装置は、ＴＶカ
メラで撮影した画像をＶＴＲに記録し、その結果をＴＶ
モニタで再生するものである。At a position facing the surface 11 of the model 12,
A brightness change tracking device 13 is provided. The brightness change tracking device 13 may be configured by an image processing system,
It may be a TV recorder. The image processing system is
An image input device, a general-purpose computer, an external storage device, a standard keyboard terminal and an image output device are provided, and the image input device is a TV.
A camera is used, an image output device is a frame memory,
An image display device formed of a D / A converter and a TV monitor is generally used. The TV recording device records the image taken by the TV camera on the VTR, and the result is recorded on the TV
It is to be played on the monitor.
【００１２】次に、作動を説明する。なお、溶湯が消失
模型４と置換する経過を各光ファイバ７ａ，７ｂ，７
ｃ，７ｄ，７ｅ，７ｆ毎に追跡する場合については、該
経過を光ファイバ７ｂを通して追跡する場合を例に説明
する。消失模型４に１４００℃の溶湯１６が上注ぎされ
ると、図２に示す如く溶湯１６が消失模型４と置換しつ
つ図中下方に流れる。溶湯１６がさらに流れて消失模型
４中に埋設された光ファイバ７ｂの一端面８ｂの近傍部
分に達すると、一端面８ｂの近傍部分の消失模型４が熱
分解して分解ガス相１７が生じる。そのため、一端面８
ｂが分解ガス相１７に曝され、分解ガス相１７から一端
面８ｂに入射した光が、表面１１に配置された光ファイ
バ７ｂの他端面１０ｂに伝えられる。Next, the operation will be described. It should be noted that the process of replacing the molten metal with the disappearance model 4 will be described with reference to the respective optical fibers 7a, 7b, 7
In the case of tracking every c, 7d, 7e, 7f, the case of tracking the progress through the optical fiber 7b will be described as an example. When the melt 16 at 1400 ° C. is poured onto the disappearance model 4, the melt 16 flows downward while replacing the disappearance model 4 as shown in FIG. When the molten metal 16 further flows and reaches a portion near the one end face 8b of the optical fiber 7b embedded in the disappearance model 4, the disappearance model 4 near the one end face 8b is thermally decomposed to generate a decomposed gas phase 17. Therefore, one end face 8
b is exposed to the decomposed gas phase 17, and the light incident on the one end face 8b from the decomposed gas phase 17 is transmitted to the other end face 10b of the optical fiber 7b arranged on the surface 11.
【００１３】その後、溶湯１６がさらに流れると、図３
に示すように、一端面８ｂが溶湯１６中に浸透し、溶湯
１６から一端面８に入射した光が他端面１０ｂに伝えら
れる。After that, when the molten metal 16 further flows, FIG.
As shown in, the one end surface 8b penetrates into the molten metal 16, and the light incident on the one end surface 8 from the molten metal 16 is transmitted to the other end surface 10b.
【００１４】光ファイバ７ｂの一端面８ｂから他端面１
０ｂに伝えられる光の強さの変化が、他端面１０ｂの輝
度変化となり、その輝度変化が輝度変化追跡装置１３で
追跡されて、光ファイバ７ｂの一端面８ｂが消失模型４
中にあるのか、分解ガス相１７中にあるのか、あるいは
溶湯１６中にあるのかが検知される。消失模型４は発光
せず、分解ガス相１７は最大２０Ｗ／ｍｍ２程度の光量
を有しており、溶湯１６は１００Ｗ／ｍｍ２程度の光量
を有しているため、上記判断が可能となる。From one end face 8b of the optical fiber 7b to the other end face 1
The change in the intensity of the light transmitted to 0b becomes the change in the brightness of the other end surface 10b, and the change in the brightness is tracked by the brightness change tracking device 13, and the one end surface 8b of the optical fiber 7b disappears.
It is detected whether it is inside, in the decomposed gas phase 17, or in the molten metal 16. The disappearance model 4 does not emit light, the decomposed gas phase 17 has a maximum light amount of about 20 W / mm 2 , and the molten metal 16 has a light amount of about 100 W / mm 2, so the above determination is possible. .
【００１５】また、光ファイバ７ａ，７ｂ，７ｃ，７
ｄ，７ｅ，７ｆの他端面１０ａ，１０ｂ，１０ｃ，１０
ｄ，１０ｅ，１０ｆの各輝度変化を連続して測定するこ
とにより消失模型４が溶湯１６と置換する際の湯流れを
溶湯１６の実際の流れに即して視覚的に検知することが
できる。Further, the optical fibers 7a, 7b, 7c, 7
The other end surfaces 10a, 10b, 10c, 10 of d, 7e, 7f
By continuously measuring the brightness changes of d, 10e, and 10f, it is possible to visually detect the molten metal flow when the disappearance model 4 replaces the molten metal 16 in accordance with the actual flow of the molten metal 16.
【００１６】なお、上記実施例では消失模型４中に挿入
された光ファイバ７ａ，７ｂ，７ｃ，７ｄ，７ｅ，７ｆ
の一端面８ａ，８ｂ，８ｃ，８ｄ，８ｅ，８ｆが平面状
の断面４ａ上に並ぶように配置されたため、それに伴っ
て、他端面１０ａ，１０ｂ，１０ｃ，１０ｄ，１０ｅ，
１０ｆが配置される模型１２の表面１１も平面状に形成
される。しかし、消失模型に挿入される複数の光ファイ
バは必ずしもその一端面が同一平面上に配置される必要
はない。例えば、図４に示すように光ファイバ２０ａ，
２０ｂ，２０ｃ，２０ｄ，２０ｅをそれぞれ消失模型２
１中に任意の深さで挿入してもよく、このような場合、
図５に示すように光ファイバ２０ａ，２０ｂ，２０ｃ，
２０ｄ，２０ｅの一端面２２ａ，２２ｂ，２２ｃ，２２
ｄ，２２ｅを含む消失模型２１の断面２１ａは凹凸面と
なり、それに伴って、光ファイバ２０ａ，２０ｂ，２０
ｃ，２０ｄ，２０ｅの他端面が配置される模型の表面も
断面２１ａと同一形状の凹凸面となる。In the above embodiment, the optical fibers 7a, 7b, 7c, 7d, 7e, 7f inserted in the vanishing model 4 are used.
Since the one end faces 8a, 8b, 8c, 8d, 8e, 8f of the are arranged side by side on the planar cross section 4a, the other end faces 10a, 10b, 10c, 10d, 10e,
The surface 11 of the model 12 on which 10f is arranged is also formed in a flat shape. However, the plurality of optical fibers to be inserted into the vanishing model do not necessarily need to have their one end surfaces arranged on the same plane. For example, as shown in FIG.
20b, 20c, 20d, and 20e are vanishing models 2
1 may be inserted at any depth, in such a case,
As shown in FIG. 5, the optical fibers 20a, 20b, 20c,
One end faces 22a, 22b, 22c, 22 of 20d, 20e
The cross section 21a of the vanishing model 21 including d and 22e becomes an uneven surface, and accordingly, the optical fibers 20a, 20b and 20
The surface of the model on which the other end surfaces of c, 20d, and 20e are arranged is also an uneven surface having the same shape as the cross section 21a.
【００１７】[0017]
【発明の効果】本発明によれば、消失模型鋳造の湯流れ
の検知に加えて、溶湯が消失模型と置換する際に発生す
る分解ガス相の存在を検知することができるため、分解
ガス相の湯流れに及ぼす影響を知ることができ、鋳物欠
陥の防止及び鋳物の寸法精度向上が可能となる。EFFECTS OF THE INVENTION According to the present invention, in addition to the detection of the molten metal flow in the disappearance model casting, the presence of the decomposition gas phase generated when the molten metal replaces the disappearance model can be detected. It is possible to know the effect of the cast on the molten metal flow, prevent casting defects and improve the dimensional accuracy of the casting.
【図１】本発明の実施例である溶湯流検出装置の構成を
示す図である。FIG. 1 is a diagram showing a configuration of a molten metal flow detection apparatus that is an embodiment of the present invention.
【図２】上記実施例において溶湯が消失模型を置換する
過程の一つの状態を示す図である。FIG. 2 is a diagram showing one state of a process in which molten metal replaces a disappearance model in the above-mentioned embodiment.
【図３】上記溶湯が消失模型を置換する過程の別の状態
を示す図である。FIG. 3 is a diagram showing another state of the process in which the molten metal replaces the vanishing model.
【図４】上記実施例と別の態様で光ファイバが挿入され
た消失模型を示す図である。FIG. 4 is a diagram showing a vanishing model in which an optical fiber is inserted in a mode different from that of the above-mentioned embodiment.
【図５】図４に示す消失模型を消失模型に挿入された光
ファイバの一端面を含む断面を有するように切断した状
態を示す図である。5 is a view showing a state in which the vanishing model shown in FIG. 4 is cut so as to have a cross section including one end face of an optical fiber inserted in the vanishing model.
４ 消失模型
４ａ 断面
７ａ，７ｂ，７ｃ，７ｄ，７ｅ，７ｆ 光ファイバ
８ａ，８ｂ，８ｃ，８ｄ，８ｅ，８ｆ 一端面
１０ａ，１０ｂ，１０ｃ，１０ｄ，１０ｅ，１０ｆ 他
端面
１１ 表面
１２ 模型
１３ 輝度変化追跡装置
２０ａ，２０ｂ，２０ｃ，２０ｄ，２０ｅ 光ファイバ
２１ 消失模型
２２ａ，２２ｂ，２２ｃ，２２ｄ，２２ｅ 一端面4 Disappearance model 4a Cross section 7a, 7b, 7c, 7d, 7e, 7f Optical fiber 8a, 8b, 8c, 8d, 8e, 8f One end surface 10a, 10b, 10c, 10d, 10e, 10f Other end surface 11 Surface 12 Model 13 Luminance Change tracking device 20a, 20b, 20c, 20d, 20e Optical fiber 21 Disappearance model 22a, 22b, 22c, 22d, 22e One end surface
───────────────────────────────────────────────────── フロントページの続き (56)参考文献 特開 平６−246391（ＪＰ，Ａ) 特開 昭57−94625（ＪＰ，Ａ) 特開 平７−108347（ＪＰ，Ａ) 特開 平５−96365（ＪＰ，Ａ) 特開 平５−261470（ＪＰ，Ａ) 特開 平６−154943（ＪＰ，Ａ) (58)調査した分野(Int.Cl.7，ＤＢ名) B22C 9/00,9/04,7/02 B22D 46/00 ─────────────────────────────────────────────────── ─── Continuation of the front page (56) Reference JP-A-6-246391 (JP, A) JP-A-57-94625 (JP, A) JP-A-7-108347 (JP, A) JP-A-5- 96365 (JP, A) JP 5-261470 (JP, A) JP 6-154943 (JP, A) (58) Fields investigated (Int.Cl. 7 , DB name) B22C 9 / 00,9 / 04,7 / 02 B22D 46/00
Claims (2)
本の光ファイバと、 内部に挿入した複数本の光ファイバの各一端面をそれぞ
れ所定位置に配置した消失模型と、 該光ファイバの各一端面を含む該消失模型の断面と同一
形状に形成された表面を有し、該断面上に配置された該
光ファイバの一端面と同位置になるように該光ファイバ
の他端面を該表面上に配置した模型と、 該模型の表面上に配置した該光ファイバの他端面を撮像
して該他端面の輝度の変化を追跡する輝度変化追跡装置
とから形成されたことを特徴とする消失模型鋳造の溶湯
流検知装置。1. A plurality of optical fibers for transmitting light incident on one end to the other end, an extinction model in which each one end face of the plurality of optical fibers inserted inside is arranged at a predetermined position, respectively, and the optical fiber. Of the vanishing model including the respective one end faces of the optical fiber, and the other end face of the optical fiber so as to be at the same position as the one end face of the optical fiber arranged on the cross section. And a brightness change tracking device for imaging the other end surface of the optical fiber arranged on the surface of the model and tracking the change in the brightness of the other end surface. Disappearance model casting melt flow detector.
凸面であることを特徴とする消失模型鋳造の溶湯流検知
装置。2. A melt flow detection device for vanishing model casting, wherein the surface of the model according to claim 1 is a flat surface or an uneven surface.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP04605195A JP3377326B2 (en) | 1995-01-26 | 1995-01-26 | Melt flow detector for vanishing model casting |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP04605195A JP3377326B2 (en) | 1995-01-26 | 1995-01-26 | Melt flow detector for vanishing model casting |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH08197186A JPH08197186A (en) | 1996-08-06 |
| JP3377326B2 true JP3377326B2 (en) | 2003-02-17 |
Family
ID=12736234
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP04605195A Expired - Fee Related JP3377326B2 (en) | 1995-01-26 | 1995-01-26 | Melt flow detector for vanishing model casting |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3377326B2 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20020046823A1 (en) * | 2000-10-24 | 2002-04-25 | Siemens Automotive Corporation | Method of accurately measuring volume of injected metal in forming core elements for lost core molding process |
-
1995
- 1995-01-26 JP JP04605195A patent/JP3377326B2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JPH08197186A (en) | 1996-08-06 |
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