KR20160077371A - Apparatus and method of measuring gap between nozzle having feature and cooling wheel in manufacturing amorphous fiber - Google Patents

Apparatus and method of measuring gap between nozzle having feature and cooling wheel in manufacturing amorphous fiber Download PDF

Info

Publication number
KR20160077371A
KR20160077371A KR1020140186478A KR20140186478A KR20160077371A KR 20160077371 A KR20160077371 A KR 20160077371A KR 1020140186478 A KR1020140186478 A KR 1020140186478A KR 20140186478 A KR20140186478 A KR 20140186478A KR 20160077371 A KR20160077371 A KR 20160077371A
Authority
KR
South Korea
Prior art keywords
nozzle
cooling wheel
gap
feature point
image
Prior art date
Application number
KR1020140186478A
Other languages
Korean (ko)
Inventor
공남웅
정원철
Original Assignee
주식회사 포스코
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by 주식회사 포스코 filed Critical 주식회사 포스코
Priority to KR1020140186478A priority Critical patent/KR20160077371A/en
Publication of KR20160077371A publication Critical patent/KR20160077371A/en

Links

Images

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
    • B22D11/00—Continuous casting of metals, i.e. casting in indefinite lengths
    • B22D11/06—Continuous casting of metals, i.e. casting in indefinite lengths into moulds with travelling walls, e.g. with rolls, plates, belts, caterpillars
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
    • B22D11/00—Continuous casting of metals, i.e. casting in indefinite lengths
    • B22D11/16—Controlling or regulating processes or operations
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
    • B22D11/00—Continuous casting of metals, i.e. casting in indefinite lengths
    • B22D11/16—Controlling or regulating processes or operations
    • B22D11/161—Controlling or regulating processes or operations for automatic starting the casting process

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Continuous Casting (AREA)

Abstract

An apparatus for measuring a gap between a nozzle and a cooling wheel using a nozzle having a feature point in an amorphous fiber manufacturing facility includes a nozzle including a feature point and an illumination unit for irradiating light to the cooling wheel, An image acquiring unit that acquires an image of a predetermined candidate region including a feature point of the nozzle when passing through a gap between the wheels, a gap acquiring unit that acquires a gap between the nozzle and the cooling wheel from the image of the candidate region using the feature point of the nozzle The feature point of the nozzle is formed so as to pass through the side surface of the nozzle so that the interval between the nozzle and the cooling wheel can be obtained even while the molten alloy is being discharged from the nozzle.

Description

[0001] APPARATUS AND METHOD OF MEASURING GAP BETWEEN NOZZLE HAVING FEATURE AND COOLING WHEEL IN MANUFACTURING AMORPHOUS FIBER [0002] BACKGROUND OF THE INVENTION [0003]

The present application relates to a gap measurement between a nozzle and a cooling wheel in an amorphous fiber manufacturing facility.

In general, amorphous alloys (hereinafter referred to as "amorphous alloys") are manufactured by rapid cooling of molten metal in an amorphous alloy. Since the atoms are regularly arranged, there is no time for crystallization so that the disordered atomic arrangement state of the liquid is maintained in a solid state do.

Unlike conventional crystalline alloys, amorphous alloys have a structure similar to a liquid phase that does not have crystallinity due to the irregular arrangement of atoms. Accordingly, amorphous alloys are free from crystalline imperfections such as grain boundaries and dislocations, which are characteristics of crystalline alloys, and have excellent soft magnetic properties such as soft magnetic properties, Corrosion resistance, superconductivity and the like.

As the amorphous alloy manufacturing method, die casting / permanent mold casting and melt spinning are mainly used. The melt spinning method comprises a tundish for melting an alloy, a nozzle mounted on a lower side of the tundish to discharge the molten alloy, and a cooling wheel provided close to the lower portion of the nozzle, And is rapidly cooled while being discharged onto the circumferential surface of a cooling wheel rotating at a high speed through a through-hole, and is made of a strip or a fiber having a constant width and thickness that maintains the amorphous state.

Due to the nature of the amorphous material, the molten alloy requires a rapid cooling rate of over 105 K / s, so only a small amount of the molten alloy is discharged to the cooling wheel and rapidly cooled. In order to discharge the molten alloy to the cooling wheel by controlling the amount of the molten alloy, it is necessary to measure and control the fine gap set between the nozzle for discharging the molten alloy and the cooling wheel. The gap between the nozzle and the cooling wheel is such that the nozzle is horizontal to the cooling wheel so that the gap between the nozzle and the cooling wheel is constant to produce a uniform thickness of strip or fiber.

Techniques for measuring the gap between the nozzle and the cooling wheel described above are disclosed, for example, in Korean Laid-Open Patent Application No. 2013-0077479 ('Gap Control Device of Nozzle and Cooling Wheel in Amorphous Fiber Manufacturing Equipment' 9).

However, in the above-mentioned document, only the contents for automatically detecting the gap between the nozzle and the cooling wheel using the image recognition camera are disclosed, and no specific method is mentioned. In addition, in the above-mentioned document, it is applicable only when the molten alloy is not discharged from the nozzle, and there is a problem that it is impossible to measure the gap between the nozzle and the cooling wheel while the molten alloy is being discharged from the nozzle.

Korean Patent Laid-Open Publication No. 2013-0077479 ('Gap Control Device of Nozzle and Cooling Wheel in Amorphous Fiber Manufacturing Equipment', published on July 9, 2013)

According to an embodiment of the present invention, an apparatus and method for measuring a gap between a nozzle and a cooling wheel using feature points of a nozzle in an amorphous fiber manufacturing facility capable of measuring the gap between the nozzle and the cooling wheel while the molten alloy is being discharged from the nozzle to provide.

According to a first aspect of the present invention, there is provided an apparatus for measuring a gap between a nozzle and a cooling wheel, comprising: an illumination unit for irradiating light to a cooling wheel and a nozzle including a feature point; An image acquiring unit for acquiring an image of a predetermined candidate region including a feature point of the nozzle when the light irradiated by the illumination unit passes through a feature point of the nozzle and a gap between the nozzle and the cooling wheel; And a gap computing unit for computing a gap between the nozzle and the cooling wheel from the image of the candidate region using the minutiae of the nozzle, wherein the minutiae point of the nozzle includes a nozzle formed through a side of the nozzle, A measuring device is provided.

According to an embodiment of the present invention, the gap operation unit may include: a first operation unit for extracting feature points of the nozzle and an upper portion of the cooling wheel through binarization of the image of the candidate region; And a second calculating unit for calculating the gap by subtracting a distance between the feature point of the nozzle and the lower portion of the nozzle from a distance between the feature point of the nozzle and the upper portion of the cooling wheel.

According to an embodiment of the present invention, the distance between the minutiae point of the nozzle and the upper portion of the cooling wheel is determined by the length per unit pixel of the image for the candidate region, the minutiae point of the nozzle, Can be obtained by multiplying.

According to an embodiment of the present invention, the injection port of the nozzle may not be disposed in the candidate region.

According to one embodiment of the present invention, the candidate region may be set from the image obtained before casting of the amorphous fiber starts, and may include the minutiae of the nozzle, the lower side of the nozzle, and the upper side of the cooling wheel .

According to a second aspect of the present invention, there is provided a method of measuring a gap between a nozzle and a cooling wheel, comprising: a first step of irradiating light to a nozzle and a cooling wheel including a minutiae in an illumination section; A second step of acquiring an image for a preset candidate region including the minutiae of the nozzle when the light irradiated by the illumination unit passes through the minutiae of the nozzle and the gap between the nozzle and the cooling wheel, ; And a gap computing unit for computing a gap between the nozzle and the cooling wheel from the image of the candidate region using the feature point of the nozzle, wherein the minutiae point of the nozzle is formed through the side surface of the nozzle Thereby providing a gap measurement method between the nozzle and the cooling wheel.

According to an embodiment of the present invention, the third step includes the steps of: extracting, at a first computing unit, a feature point of the nozzle and an upper portion of the cooling wheel through binarization of the image of the candidate region; And subtracting the gap between the feature point of the nozzle and the lower portion of the nozzle from the distance between the feature point of the nozzle and the upper portion of the cooling wheel in the second operation unit.

According to an embodiment of the present invention, the distance between the minutiae point of the nozzle and the upper portion of the cooling wheel is determined by the length per unit pixel of the image for the candidate region, the minutiae point of the nozzle, Can be obtained by multiplying.

According to an embodiment of the present invention, the injection port of the nozzle may not be disposed in the candidate region.

According to one embodiment of the present invention, the candidate region may be set from the image obtained before casting of the amorphous fiber starts, and may include the minutiae of the nozzle, the lower side of the nozzle, and the upper side of the cooling wheel .

According to an embodiment of the present invention, a feature point is formed so as to penetrate a side surface of a nozzle, and then a gap between the nozzle and the cooling wheel is obtained from an image of a candidate region including a feature point to pass through the side surface of the nozzle. The distance between the cooling wheels can be obtained.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a configuration diagram of an apparatus for measuring a gap between a nozzle and a cooling wheel using minutiae of a nozzle in an amorphous fiber manufacturing facility according to an embodiment of the present invention. FIG.
FIGS. 2A and 2B are diagrams showing characteristic points of a nozzle formed according to an embodiment of the present invention. FIG.
3 is a diagram for explaining a concept for measuring a gap between a nozzle and a cooling wheel from an image of a candidate region according to an embodiment of the present invention.
4 is a flowchart illustrating a method of measuring a gap between a nozzle and a cooling wheel using minutiae of a nozzle in a regular fiber manufacturing facility according to an embodiment of the present invention.

DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, embodiments of the present invention will be described with reference to the accompanying drawings. However, the embodiments of the present invention can be modified into various other forms, and the scope of the present invention is not limited to the embodiments described below. The shape and the size of the elements in the drawings may be exaggerated for clarity and the same elements are denoted by the same reference numerals in the drawings.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a configuration diagram of an apparatus for measuring a gap between a nozzle and a cooling wheel using minutiae of a nozzle in an amorphous fiber manufacturing facility according to an embodiment of the present invention. FIG. 2A and 2B are diagrams showing characteristic points of a nozzle formed in accordance with an embodiment of the present invention, and FIG. 3 is a diagram illustrating a concept for measuring a gap between a nozzle and a cooling wheel according to an embodiment of the present invention Fig.

1, the apparatus for measuring a gap between a nozzle and a cooling wheel includes a gap calculating unit 130 including an illumination unit 110, an image acquisition unit 120, a first calculation unit 131, and a second calculation unit 132, .

Hereinafter, an apparatus for measuring a gap between a nozzle and a cooling wheel using minutiae of a nozzle in an amorphous fiber manufacturing facility according to an embodiment of the present invention will be described in detail with reference to FIGS. 1 to 3. FIG.

First, an amorphous fiber manufacturing facility to which a gap measuring apparatus according to an embodiment of the present invention is applied includes a tundish 10 for storing a molten alloy therein, a tundish 10 disposed under the tundish 10, And a cooling wheel 20 disposed at a lower portion of the nozzle 100 for rapidly cooling the molten alloy discharged from the nozzle 100, The molten alloy discharged from the nozzle 100 is rapidly cooled by the cooling wheel 20 rotating at a high speed to form an amorphous metal fiber.

Here, the nozzle 100 may have a plurality of ejection openings 101 arranged long in the width direction of the cooling wheel 20 as shown in Figs. 2A and 2B, and the side surface of the nozzle 100 , Inclined or vertical.

On the other hand, a feature point 102 serving as a reference for measuring the gap may be formed on the side surface of the nozzle 100. That is, the feature point 102 may be formed through the side surface of the nozzle 100, and the light irradiated by the illumination unit 110 may pass through the feature point 102. Specifically, the feature point 102 described above may be formed in such a manner that a part of the side surface of the nozzle 100 is scraped off (see FIG. 2A) or a hole is formed on the side surface of the nozzle 100 (see FIG. 2B) .

1, the illuminating unit 110 is disposed on one side of the nozzle 100 and the cooling wheel 20 to irradiate the light to the nozzle 100 and the cooling wheel 20, have. According to an embodiment of the present invention, the illumination unit 110 includes an LED (Light Emitting Diode) line light source having a strong directivity so that the edge of the nozzle 100 can be further emphasized by the image acquisition unit 120 It is effective.

The image acquisition unit 120 may be a CCD (Charge Coupled Device) camera and is disposed on the opposite side of the side where the illumination unit 110 is disposed with respect to the nozzle 100 and the cooling wheel 20, When the light irradiated by the nozzle 110 passes through the feature point 102 of the nozzle 100 and the gap between the nozzle 100 and the cooling wheel 20, An image for the set candidate region (see 300 in FIG. 3) can be obtained. An image of the obtained candidate region may be transmitted to the gap operation unit 130.

The gap calculator 130 may include a first calculator 131 and a second calculator 132. The gap calculator 130 may calculate the gap calculator 130 from the image of the candidate area (see 300 in FIG. 3) using the minutiae 102 of the nozzle 100 The gap between the nozzle 100 and the cooling wheel 20 can be obtained.

The first computing unit 131 of the gap computing unit 130 computes the feature points 102 of the nozzle 100 and the upper side of the cooling wheel 20 through the binarization and edge detection algorithm for the image of the candidate region 300. [ Can be extracted.

3, the second calculating unit 132 of the gap calculating unit 130 calculates the distance L1 between the feature point 102 of the nozzle 100 and the upper portion of the cooling wheel 20, The gap D between the nozzle 100 and the cooling wheel 20 can be obtained by subtracting the distance L2 from the feature point 102 to the lower portion of the nozzle 100. [

The distance between the feature point 102 of the nozzle 100 and the upper portion of the cooling wheel 20 is determined by the length per unit pixel of the image for the candidate region 300 and the distance between the feature point 102 of the nozzle 100 and the cooling wheel 20 by the number of pixels up to the upper portion of the image.

3, since the injection port 101 of the nozzle 100 is not disposed in the above-described candidate region 300, it is possible to measure the gap even when the molten alloy is being discharged from the nozzle 100 .

3) can be set from the image obtained before the start of casting of the amorphous fiber, and the characteristic region 102 of the nozzle 100, the nozzle (not shown) of the nozzle 100 100 and the upper side surface of the cooling wheel 20. The cooling wheel 20 may be a flat plate, That is, before the start of casting, a candidate region including the feature point 102, the lower side of the nozzle 100 and the upper side of the cooling wheel 20 is set in advance, and when casting is started, It is possible to increase the speed of the arithmetic processing.

As described above, according to the embodiment of the present invention, the feature point is formed so as to penetrate the side surface of the nozzle, and then the gap between the nozzle and the cooling wheel is obtained from the image of the candidate region including the feature point, The distance between the nozzle and the cooling wheel can be obtained.

4 is a flowchart illustrating a method of measuring a gap between a nozzle and a cooling wheel using minutiae of a nozzle in a qualified fiber manufacturing facility according to an embodiment of the present invention.

1 to 4, the illumination unit 110 includes a nozzle 100 and a cooling wheel (not shown) disposed on one side of the nozzle 100 and the cooling wheel 20, 20 (S401). According to an embodiment of the present invention, the illumination unit 110 includes an LED (Light Emitting Diode) line light source having a strong directivity so that the edge of the nozzle 100 can be further emphasized by the image acquisition unit 120 It is effective.

Next, the image acquiring unit 120 is disposed on the opposite side of the side where the illumination unit 110 is disposed with respect to the nozzle 100 and the cooling wheel 20 so that the light irradiated by the illumination unit 110 passes through the nozzle 100 (See 300 in FIG. 3) that includes the feature points 102 of the nozzle 100 when passing through the feature point 102 of the nozzle 100 and the gap between the nozzle 100 and the cooling wheel 20 The image can be acquired (S402). An image of the obtained candidate region may be transmitted to the gap operation unit 130.

Finally, the gap calculator 130 can obtain the gap between the nozzle 100 and the cooling wheel 20 from the image of the candidate area (see 300 in FIG. 3) using the minutiae 102 of the nozzle 100 (S403).

On the other hand, since the injection port 101 of the nozzle 100 is not disposed in the above-described candidate region 300, the gap measurement can be performed even when the molten alloy is being discharged from the nozzle 100. 3) can be set from the image obtained before the start of casting of the amorphous fiber, and the characteristic region 102 of the nozzle 100, the nozzle (not shown) of the nozzle 100 100 and the upper side surface of the cooling wheel 20. The cooling wheel 20 may be a flat plate,

As described above, according to the embodiment of the present invention, the feature point is formed so as to penetrate the side surface of the nozzle, and then the gap between the nozzle and the cooling wheel is obtained from the image of the candidate region including the feature point, The distance between the nozzle and the cooling wheel can be obtained.

The present invention is not limited to the above-described embodiments and the accompanying drawings. It will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the invention as defined by the appended claims. It will be self-evident.

10: tundish 20: cooling wheel
100: nozzle 101: nozzle
102: minutiae point 110:
120: image acquiring unit 130: gap calculating unit
131: first calculation unit 132: second calculation unit
300: candidate region

Claims (10)

A gap measuring apparatus for a gap between a nozzle and a cooling wheel,
A lighting unit for irradiating light to the cooling wheel and the nozzle including the minutiae;
An image acquiring unit for acquiring an image of a predetermined candidate region including a feature point of the nozzle when the light irradiated by the illumination unit passes through a feature point of the nozzle and a gap between the nozzle and the cooling wheel; And
And a gap operation unit for obtaining a gap between the nozzle and the cooling wheel from the image of the candidate region using the feature point of the nozzle,
Wherein the feature point of the nozzle is formed through a side surface of the nozzle.
The method according to claim 1,
Wherein the gap calculating unit comprises:
A first computing unit for extracting feature points of the nozzle and an upper portion of the cooling wheel through binarization of the image of the candidate region; And
And a second calculation unit for calculating the gap by subtracting a distance from the feature point of the nozzle to the upper portion of the cooling wheel to a predetermined lower limit of the feature point and the lower portion of the nozzle.
3. The method of claim 2,
The distance between the feature point of the nozzle and the upper portion of the cooling wheel,
Wherein a gap between the nozzle and the cooling wheel is obtained by multiplying the length of the image per unit pixel of the candidate region and the number of pixels up to the top of the cooling wheel by the feature point of the nozzle.
The method according to claim 1,
In the candidate region,
Wherein a gap between the nozzle and the cooling wheel in which the nozzle of the nozzle is not disposed is measured.
The method according to claim 1,
Wherein the candidate region is set from an image obtained before casting of the amorphous fiber is started and includes a feature point of the nozzle, a side lower portion of the nozzle and a side upper portion of the cooling wheel.
A method for measuring a gap between a nozzle and a cooling wheel,
In the illumination unit, a first step of irradiating light to the nozzle and the cooling wheel including the feature points;
A second step of acquiring an image for a preset candidate region including the minutiae of the nozzle when the light irradiated by the illumination unit passes through the minutiae of the nozzle and the gap between the nozzle and the cooling wheel, ; And
And a third step of calculating, in a gap operation unit, a gap between the nozzle and the cooling wheel from the image of the candidate region using the feature point of the nozzle,
Wherein the feature point of the nozzle is formed through the side surface of the nozzle.
The method according to claim 6,
In the third step,
Extracting a feature point of the nozzle and an upper portion of the cooling wheel through binarization of the image of the candidate region in the first operation unit; And
Calculating a gap between the nozzle and the cooling wheel by subtracting a distance from the feature point of the nozzle to the upper portion of the cooling wheel and a distance from the feature point to a lower portion of the nozzle, Way.
8. The method of claim 7,
The distance between the feature point of the nozzle and the upper portion of the cooling wheel,
Wherein a gap between the nozzle and the cooling wheel is obtained by multiplying the length of the image per unit pixel of the image with respect to the candidate region and the number of pixels up to the upper portion of the cooling wheel.
The method according to claim 6,
In the candidate region,
Wherein a gap between the nozzle and the cooling wheel in which the nozzle of the nozzle is not disposed is measured.
The method according to claim 6,
Wherein the candidate region comprises:
Wherein the casting of the amorphous fiber is set from an image obtained before start-up and comprises a feature point of the nozzle, a side underneath the nozzle and an upper side of the cooling wheel.
KR1020140186478A 2014-12-22 2014-12-22 Apparatus and method of measuring gap between nozzle having feature and cooling wheel in manufacturing amorphous fiber KR20160077371A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR1020140186478A KR20160077371A (en) 2014-12-22 2014-12-22 Apparatus and method of measuring gap between nozzle having feature and cooling wheel in manufacturing amorphous fiber

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR1020140186478A KR20160077371A (en) 2014-12-22 2014-12-22 Apparatus and method of measuring gap between nozzle having feature and cooling wheel in manufacturing amorphous fiber

Publications (1)

Publication Number Publication Date
KR20160077371A true KR20160077371A (en) 2016-07-04

Family

ID=56500827

Family Applications (1)

Application Number Title Priority Date Filing Date
KR1020140186478A KR20160077371A (en) 2014-12-22 2014-12-22 Apparatus and method of measuring gap between nozzle having feature and cooling wheel in manufacturing amorphous fiber

Country Status (1)

Country Link
KR (1) KR20160077371A (en)

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20130077479A (en) 2011-12-29 2013-07-09 재단법인 포항산업과학연구원 Device for controlling gap of cooling wheel and nozzle for manufacturing amorphous fiber

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20130077479A (en) 2011-12-29 2013-07-09 재단법인 포항산업과학연구원 Device for controlling gap of cooling wheel and nozzle for manufacturing amorphous fiber

Similar Documents

Publication Publication Date Title
CN108856664A (en) A kind of conticaster crystallizer automatic slag system and control method
JPWO2018139571A1 (en) Soldering system, control device, control method and program
WO2010064727A1 (en) Method of determining temperature of molten pig iron and method of operating blast furnace using same
KR101481442B1 (en) Apparatus for island position detecting of ingot growth furnace and method for island position detecting
KR20130077479A (en) Device for controlling gap of cooling wheel and nozzle for manufacturing amorphous fiber
KR20160077371A (en) Apparatus and method of measuring gap between nozzle having feature and cooling wheel in manufacturing amorphous fiber
JP5703828B2 (en) Method for measuring the slab surface temperature in a continuous casting machine
WO2012132052A1 (en) Metal ingot manufacturing method, liquid level control method, and extra fine copper alloy wire
KR101536445B1 (en) Apparatus and method of measuring gap between nozzle and cooling wheel using front light in manufacturing amorphous fiber
KR101219607B1 (en) Apparatus and method for measuring level of mouldflux
KR20150074680A (en) Apparatus and method of measuring gap between nozzle and cooling wheel using rear light in manufacturing amorphous fiber
CN107743531B (en) Island position detection device and method for melting furnace
US6471768B2 (en) Method of and apparatus for growing ribbon of crystal
KR20150076902A (en) Apparatus and method of measuring gap between nozzle and cooling wheel using front light and rear light in manufacturing amorphous fiber
CN104289702A (en) Mold casting molten steel liquid level measurement and control method and system
KR20140084701A (en) Apparatus for measuring nozzle gap of rapid solidification strip manufacturing facility and method for measuring nozzle gap of the same
KR100862039B1 (en) Apparatus and Method for Measuring the Slab Burging in the field of Continuous Mold Process
RU2813254C1 (en) Control of ingot formation
JP2003260551A (en) Method for measuring dimension of continuous cast piece
RU2813255C1 (en) Control of metal level during casting
JP6768916B2 (en) Plate edge detection device and plate edge detection method
RU2809019C1 (en) Monitoring of casting environment
CN104907517B (en) Top-guiding type continuous casting apparatus and top-guiding type continuous casing
JP5887784B2 (en) Phase change detecting device, temperature measuring method and measuring temperature calibration method for measuring object having molten liquid part
US20230286037A1 (en) System and method for monitoring metal level during casting

Legal Events

Date Code Title Description
A201 Request for examination
E902 Notification of reason for refusal
E601 Decision to refuse application