JP2706737B2 - Probe for sampling and / or temperature measurement of molten metal - Google Patents

Description

Description: TECHNICAL FIELD The present invention relates to a probe for immersing in a molten metal to collect a sample of the molten metal and / or for measuring the temperature of the molten metal. [Prior art] A sublance system is known as a method for measuring the temperature of a molten metal bath such as a steel bath or the like and components in the metal during blowing. That is, as shown in FIG. 8, a normal lance 3 for blowing oxygen is lowered into the converter 2 containing the molten metal bath 1 to blow the molten metal into the molten metal bath, and another lance ( The probe 5 attached to the lower end of the sub-lance 4 is immersed in the molten metal bath 1 during blowing, and the probe 5 is used to measure the temperature of the molten metal and to collect a molten metal sample. Is going. As shown in FIGS. 9 to 11, the sublance 4 is
A projection 6 is provided at the lower end, and a shoulder 7 having a large diameter is provided above the projection 6. An extension tube 6a extends from the projection 6. The probe 5 is provided at the lower end of a long tube portion 8 formed of a paper tube or the like with a body 9 for sampling and / or measurement also formed of a paper tube or the like, in which a temperature sensor and an oxygen sensor are provided. And a sampling container. At the upper end of the tube section 8, a connecting tube 10 formed of a paper tube or the like is provided. The operation of attaching the probe 5 to the lower end of the sublance 4 is performed by using a mechanical device. That is, the probe 5 is fixed, and the sub-lance 4 is lowered from above the probe. The extension tube 6a is inserted into the tube portion 8 through the connecting tube 10, and the projection 6 is press-fitted into the connecting tube 10 and fitted. A plug or socket is provided at the tip of the extension tube 6a, and is connected to a socket or plug provided in the tube portion 8. That is, by this, the lead wire led from the temperature sensor and / or the oxygen sensor in the body 9 and the lead wire led from the sub lance 4 are electrically connected. [Problems to be Solved by the Invention] When the probe 5 is inserted into the converter 2 by lowering the sublance 4, fine molten metal fine particles are floating (spitting) in the converter 2. Fine metal particles adhere to the outer peripheral surfaces of the probe 5 and the sub-lance 4. Further, the inside of the converter 2 is filled with a high-temperature atmosphere gas. Therefore, the outer peripheral surface of the connecting tube 10 of the probe 5 is burned by the molten metal fine particles 12 and the high-temperature atmosphere gas. As a result of this combustion, the upper edge of the connecting cylinder 10 is also burned, and the gap 13 between the sublance 4 and the shoulder 7 is enlarged (FIG. 9). In some cases, the gap 13 is already large when the probe is mounted on the sub-lance due to mechanical deformation due to wear of the sub-lance shoulder 7 or bending of the projection 6. As soon as the body 9 of the probe 5 is immersed in the molten metal 1 by making the sublance 4 descend, the molten metal 1
Is splashed, and the scattered molten metal is
And the outer peripheral surfaces of the tube 8 of the probe 5 and the connecting tube 10. In addition, since the molten metal 1 during blowing is in a scattered (slopping) state in the furnace, the molten metal that splashes adheres to the outer peripheral surface of the sub-lance 4 and the outer peripheral surfaces of the tube 8 of the probe 5 and the connecting tube 10. . As a result, the combustion of the connecting tube 10 described above is promoted, and the gap 13 is further enlarged. When the sampling of the sample and / or the measurement of the temperature and the like are completed, the sub-lance 4 is raised, and the probe 5 is lifted from the converter 2. When the molten metal attached to the outer peripheral surface of the sub-lance 4 hangs down and moves toward the probe 5, It penetrates into the gap 13.
The gap 13 is further enlarged by the infiltration of the molten metal, and thereafter, the molten metal is cooled and solidified to form the metal 14 (No.
10). The metal 14 grows in the portion filled in the gap 13, and the sub lance 4 grows from the enlarged gap 13.
To form a massive metal part 14a that wraps around the shoulder 7 of the sublance 4 and extends as a thin film-shaped metal part 14b on the peripheral surface of the connecting tube 10 of the probe 5. . After the sub-lance 4 is lifted from the converter 2, the probe 5 described above is removed, another new probe is attached to the sub-lance 4, and the probe is inserted into the converter 2 again. Hereafter, such operations are repeated. When the probe is removed, when the connecting tube 10 of the probe 5 is pulled out from the projection 6 of the sub-lance 4, the solid metal portion 14a of the above-described metal 14 is attached so as to surround the shoulder 7 of the sub-lance. However, it is not easily separated from the shoulder 7 and is separated from the thin coated metal 14b solidified on the outer peripheral surface of the connecting cylinder 10 and remains on the shoulder 7 side (FIG. 11). If such solid metal 14a is allowed to adhere to the sub-lance shoulder 7, the solid metal 14a will gradually grow and become large lumps every time sampling and / or temperature measurement is repeated. And eventually make it difficult or impossible to attach a new probe to the sublance.
That is, it becomes difficult or impossible to electrically connect the tip of the extension tube 6a with the plug and the socket.

In order to prevent the adhesion of the metal at the connection between the sub lance and the probe, the present applicant has developed a ring body which burns at a high temperature to generate gas and retains its original shape as a carbide after the combustion. The probe provided in the above was just proposed (Japanese Utility Model Publication No. 61-17667). According to this probe, when the probe is inserted into the converter, the ring body burns and generates gas, so that the above-described action of repelling the molten metal fine particles in the spitting state on the outer periphery of the connecting cylinder is expected. This prevents molten metal from adhering to the connecting cylinder. Also, theoretically, the ring body retains its original shape even after combustion, so that there is no gap between the ring body and the shoulder of the sub-lance to allow the infiltration of molten metal, and This serves the purpose of preventing the adhesion of bullion. However, in fact, it was discovered that the ring-shaped residue, which becomes carbide after combustion, has weak mechanical strength and easily collapses when an external force is applied. Therefore, the sub-lance vibrates in the converter when it is hit by a large number of drops of molten metal due to splash or dropping, or vibrates during blowing due to the intense flow of oxygen and oxygen reactant gas in the converter. Alternatively, when the probe itself oscillates due to the violent flow of the molten metal during blowing, the ring-shaped residue after the combustion partially collapses, and sometimes the connecting cylinder and the sub-lance shoulder are broken. It has been found that the above-mentioned undesirable gap is formed between the first and second parts. On the other hand, there is known a structure in which an elastic ring such as an O-ring is interposed between a connecting portion of a sub lance and a probe and compressed to perform sealing (JP-A-60-203865).
issue). However, such an elastic ring for sealing is
The above-mentioned problems cannot be solved after all because the combustion due to the high temperature results in the formation of the above-mentioned undesirable gap between the connecting cylinder and the sub-lance shoulder. [Means for Solving the Problems] According to the present invention, a probe for collecting a sample of molten metal and / or measuring a temperature is provided with a sub-lance above the sub-lance in a state where the projection at the lower end of the sub-lance is inserted. A connecting tube having an upper annular edge facing a shoulder portion provided on an upper portion of the probe: the connecting tube constitutes gas generating means made of a material which generates a gas at high temperature on an outer peripheral surface of the tube; A solidification accelerating means made of a metal material for solidifying the molten metal when the molten metal adheres is formed on the upper annular edge.

Further, according to the present invention, the connecting tube is formed by extrapolating a protective tube around the upper periphery of an inner tube made of a paper tube;
Gas generating means made of a material which generates gas at high temperature is formed on the outer peripheral surface of the cylinder, and solidification promoting means made of a metal material which solidifies the molten metal when the molten metal adheres is formed on an upper annular edge of the protective cylinder. doing.

Further, according to the present invention, the protective cylinder is interspersed with gas generating means formed on the outer peripheral surface of the cylinder and engaging means for engaging the solidified metal when the molten metal adheres and solidifies. Provided. Further, according to the present invention, the protection cylinder includes a metal material disposed on the outer periphery of the inner cylinder and a layer formed of a material which is disposed on the outer periphery of the metal material and generates gas at high temperature. It has a layer structure; the metal material has a flange on the above-mentioned portion to cover an upper end of the layer. Further, according to the present invention, a metal fitting which penetrates the layer and the metal material from the outer peripheral surface of the protection cylinder to reach the inner cylinder is pierced, and the protection cylinder is fixed to the inner cylinder by the metal fitting. At the same time, the metal fitting is partially exposed on the outer peripheral surface of the layer. Further, according to the present invention, the protection cylinder is arranged on the outer periphery of the inner cylinder and is composed of a layer formed of a material that generates a gas at high temperature; a metal material is arranged on the inner periphery of the inner cylinder. A flange covering the upper end of the inner cylinder at the upper end of the metal material. Further, according to the present invention, notches are provided at intervals around the periphery of the flange of the metal material. Further, according to the present invention, the gas generating means is formed of a material selected from a synthetic rubber containing chloroprene rubber, or a polymer synthetic resin containing a phenol resin or a urea resin. [Embodiment] An embodiment of the present invention will be described below in detail with reference to the drawings. In the present invention, the probe 5 is provided at the lower end of a tube portion 16 formed of a paper tube or the like, similarly to the conventional example shown in FIG.
Similarly, a body (not shown) for sampling and / or measurement is formed by a paper tube or the like, and a connecting tube 17 is provided at the upper end of the tube portion 16. The body (not shown) contains a temperature sensor, an oxygen sensor, and a sampling container. A connector (not shown) composed of a plug or a socket is arranged in the tube portion 16. The sub-lance 4 includes the protrusion 6 and the shoulder 7 as described above. The protrusion 6 extends the extension tube 6a. The probe 5 is fixed by a mechanical device, and the sub-lance 4 is lowered from above the probe 5. The extension tube 6a penetrates the connecting tube 17 and is inserted into the tube portion 16, and the projection 6 is press-fitted and fitted into the connecting tube 17, whereby the probe 5 is attached to the sub-lance 4. The extension pipe 6a
A connector (not shown) consisting of a socket or a plug provided at the tip of the tube is connected to the connector in the tube section 16,
The leads led from the temperature sensor and / or the oxygen sensor and the leads led from the sublance 4 are electrically connected. In the present invention, the connecting cylinder 17 is provided with a gas generating means 19 made of a material which generates a gas at a high temperature and a solidification promoting means 20 for positively solidifying the molten metal when the molten metal adheres. The gas generating means 19 is provided at least on the outer peripheral surface of the connecting cylinder 17, and the metal solidifying means 20 is provided at least on the connecting cylinder facing the sub-lance shoulder 7.
It is provided on the 17 upper annular edge. In the illustrated embodiment, the connecting cylinder 17 has a two-layer structure of an inner cylinder 17a and an outer cylinder 17b, both of which are made of paper tubes.
Is a short one that does not reach the upper part of the inner cylinder 17a. A protection cylinder 17c is inserted and fixed to the outer periphery of the upper part of the outer cylinder 17b. The protection cylinder 17c has the above-described gas generating means 19 and solidification promoting means 20. As a material for generating a gas at high temperature to serve as the gas generating means 19, for example, a synthetic rubber material such as chloroprene rubber or a polymer synthetic material such as a phenol resin or a urea resin can be used. The solidification accelerating means 20 may be any material that positively solidifies the molten metal when the molten metal adheres, and can be arbitrarily selected from an unspecified number of metal materials. Most preferably, it is a homogeneous metal material. For example, it is better to use SS material for molten metal of gun or steel, and to use SUS material for molten metal of SUS. Some embodiments of the gas generating means 19 and the coagulation accelerating means 20 are shown in FIG. 4 to FIG. In FIG. 4, the protective cylinder 17c is a thin metal sheet 24 arranged on the outer periphery of the upper part of the inner cylinder 17a made of a paper tube.
And a thick layer 25 disposed on the outer periphery of the metal sheet 24. The thick layer 25 is formed of a material that generates a gas at high temperatures, for example, synthetic rubber such as chloroprene rubber, and may be formed in a tubular shape in advance, or may be formed by rolling a board shape into a tubular shape. Is also good. The metal sheet 24 has a thick layer 25 by bending the upper end.
And a plurality of notches 24b formed at intervals around the periphery of the flange 24a. Then, a metal fitting 26 such as a needle or a nail penetrating the thick layer 25 from the outer peripheral surface of the protective cylinder 17c and reaching the inner cylinder 17a is pierced, whereby the inner cylinder 17a, the metal sheet 24, the thick layer The three are integrated into a sandwich. Thereby, the protective cylinder 17c is provided on the outer peripheral surface with the gas generating means 19 by the thick layer 25.
On the other hand, the solidification promoting means 20 is formed on the upper annular edge by the flange 24a. In FIG. 5, the protective cylinder 17c is an inner cylinder 17a made of the paper tube.
A thin metal sheet 27 is superposed on the inner peripheral side of the metal sheet 27, and a flange 27a is provided to cover the upper edge of the inner cylinder 17a by bending the upper end of the metal sheet 27. A thick layer 28 is superposed on the outer periphery of the inner cylinder 17a, and the thick layer 28 is formed of a material that generates a gas at a high temperature as described above, and is fixed to the inner cylinder 17a by an adhesive means. A metal fitting similar to that of FIG. 4 in combination with or in place of the bonding means
26 may be used. A notch 24b similar to that shown in FIG. 4 may be formed in the flange 27a. Thus, the protective cylinder 17c
Is provided with a gas generating means 19 by the thick layer 28 on the outer peripheral surface, and a solidification promoting means 20 by the flange 27a on the upper annular edge. In FIG. 6, the protective cylinder 17c is an inner cylinder 17a made of the paper tube.
And a metal material 30 covering both upper edges of the inner cylinder 17a and the thick layer 29. The thick layer
Numeral 29 is made of a material that generates a gas at a high temperature as described above, and is fixed to the inner cylinder 17a by an adhesive means. The metal member 30 is formed in a T-shaped cross section having a leg portion 30a and a flange-like head portion 30b. The leg portion 30a is inserted and fixed between the inner cylinder 17a and the thick layer 29, and the The head 30b is arranged so as to straddle both upper edges of the inner cylinder 17a and the thick layer 29. A metal fitting 26 similar to that shown in FIG.
May be used. A notch 24b similar to that shown in FIG. 4 may be formed in the flange-shaped head 30b. Thus, the protective cylinder 17c is provided with the gas generating means 19 by the thick layer 29 on the outer peripheral surface, and the solidification promoting means 20 by the flange-shaped head 30b on the upper annular edge. In FIG. 7, the protection cylinder 17c is composed of a plurality of layers 21a, 21b, 21c stacked in a radial direction. Each layer is formed by embedding a metal net 22 formed by weaving a metal wire into a molded body 23 of a material that generates a gas at a high temperature as described above. The end 22a of the net 22 is exposed. Such a layer can be easily manufactured by filling and molding the material (synthetic rubber material or synthetic resin material) with the metal net 22 inserted in a mold. Thus, the protective cylinder 17c forms the gas generating means 19 by the molded body 23 on the outer peripheral surface, and forms the solidification promoting means 20 by the end 22a of the metal net 22 exposed at the upper annular edge. [Operation] When the probe 5 is inserted into the converter 2 by lowering the sublance 4, gas is generated from the gas generating means 19 of the protection cylinder 17 c provided on the outer peripheral surface of the connection cylinder 17. That is, in the case of the synthetic rubber such as the above-described chloroprene rubber or the like, or a high-molecular synthetic resin such as a phenol resin, a gas is generated by burning, and after the gas is generated, the original form is kept as a carbide. Due to this gas generation, the fine molten metal particles M1 floating (spitting) in the converter 2 are repelled from the outer periphery of the protective cylinder 17c (FIG. 1). Therefore, the molten metal fine particles
M1 is prevented from adhering to the protection cylinder 17c. When the body for sampling and / or measurement of the probe 5 is immersed in the molten metal by advancing the lowering of the sublance 4, the molten metal is splashed, and a large number of scattered molten metal drops are formed on the sublance 4 and the probe 5. Attaches to the outer peripheral surface. Further, since the molten metal during blowing is in a slopping state in the furnace, a large number of splashing molten metals adhere to the outer peripheral surfaces of the sublance 4 and the probe 5. However, during this time, the gas generating means 19 of the protection cylinder 17c continues to generate gas, so that the molten metal droplets once
Even if it adheres, it is immediately blown off by the gas and dropped. When the sub-lance 4 is raised after the sample collection and / or the measurement of the temperature and the like are completed, and the probe 5 is pulled up from the converter 2, the molten metal attached to the outer peripheral surface of the sub-lance 4 hangs down and moves to the probe 5 side. . At this time, a slight gap 13a is formed between the upper end of the connecting tube 17 and the sub-lance shoulder 7 with the probe attached to the sub-lance due to mechanical deformation due to wear of the sub-lance shoulder 7 or bending of the projection 6.
And the molten metal that hangs down tries to enter the gap 13a. However, in the case of the present invention, as soon as the molten metal enters the gap 13a, the molten metal becomes
It is immediately solidified by the solidification promoting means 20 and does not penetrate deep into the gap 13a (FIG. 2). That is, the gap 13a
The molten metal that has entered the gap is immediately solidified into a thin film and does not enlarge the gap 13a. At this time, as shown in FIG. 4, if a number of notches 24b are formed on the periphery of the flange 24a of the metal sheet 24, the gap can be reduced.
The molten metal that has entered 13a solidifies more quickly because it is surrounded by cuts 24b. Therefore, the gap 13a is formed by such a thin solidified metal.
As a result, the molten metal that hangs down smoothly moves to the outer circumference of the protective cylinder 17c,
Is solidified on the outer peripheral surface of to form thick metal 15. When removing the used probe 5 from the sublance 4 and replacing it with another new probe,
When the connecting tube 17 of the probe 5 is pulled out from the protrusion 6 of the protective tube 17c, the thick metal 15 solidified on the outer periphery of the protective tube 17c is substantially equal in thickness from the outer periphery of the protective tube 17c to the outer periphery of the sub-lance 4. Since they are extended, these bullions 15 are peeled off from the sublance 4 as one. At this time, the thin solidified metal that has entered the gap 13a is
It is peeled off from the shoulder portion 7 of the sub-lance together with 5. Therefore, no metal remains on the sub-lance shoulder 7 as in the prior art (FIG. 3). At this time, as shown in FIG. 4, if the metal coupling 26 is exposed on the outer periphery of the protective cylinder 17c, the sub-lance 4
It is possible to obtain a good result that the molten metal that hangs down from the outer periphery of the protective cylinder 17c to the outer peripheral surface of the protective cylinder 17c and solidifies is firmly fixed to the protective cylinder 17c. That is, the sagging molten metal is entangled and engaged with the metal fitting 26 during solidification. As a result, as described above, when the probe is pulled out from the sub-lance, the thick metal 15 is suitably peeled off from the shoulder portion of the sub-lance following the probe. As shown in FIG. 7, if the metal net 22 is buried in a molded body 23 of a material that generates gas at high temperature, the molded body 23 generates gas and burns as a carbide after the molded body 23 generates gas. Although the original shape is retained, the carbide partially collapses due to the external force in the converter, exposing the metal net 22, so that the molten metal hanging down when the probe is lifted is entangled with the net 22 and solidified. In this case, too, the thick metal 15 is engaged with the protection cylinder 17c. [Effects of the Invention] (1) According to the present invention, when the probe is inserted into the furnace, gas is generated from the outer peripheral surface of the connecting tube 17 by the gas generating means 19, so that the connecting tube 17 The adhesion of fine particles of molten metal can be prevented. as a result,
Unlike the conventional case, the connecting cylinder is not burned and forms an undesired gap while facing the sub-lance shoulder. (2) Further, according to the present invention, when the probe is lifted, even if the molten metal that hangs down from the sub-lance onto the probe and tries to enter between the connecting tube 17 and the sub-lance shoulder portion 7, the connecting tube 17 The solidification accelerating means 20 formed on the upper annular edge allows the molten metal to infiltrate immediately, thereby preventing the molten metal from intruding any more. For example, due to mechanical deformation due to wear of the shoulder of the sub lance, or bending of the projection 6, the upper end of the connecting tube 17 and the shoulder 7
Even if there is a slight gap 13a between
The molten metal does not penetrate deeply into the gap 13a, but solidifies at the position where it enters shallowly, and prevents further penetration. As a result, the thick metal 15 that hangs down from the sub-lance and solidifies on the outer periphery of the connecting tube 17 is formed to have a substantially uniform thickness as a whole. The thick metal 15 solidified on 17 follows the probe side and is peeled off from the shoulder of the sub-lance, and does not remain on the shoulder of the sub-lance as in the conventional case.

[Brief description of the drawings]

FIG. 1 is a longitudinal sectional view showing a main part of a probe according to an embodiment of the present invention mounted on a sublance, in which a molten metal fine particle is repelled in a converter, and FIG. FIG. 3 is a longitudinal sectional view showing a state in which the molten metal on the outer periphery of the sub lance is hanging down to the probe side, FIG. 3 is a longitudinal sectional view showing a state where the probe is pulled out of the sub lance in the same portion, and FIG. FIG. 5 is a cutaway perspective view showing a first embodiment of the cylinder, FIG. 5 is a cutaway perspective view showing a second embodiment, FIG. 6 is a cutaway perspective view showing a third embodiment, and FIG. FIG. 8 is a longitudinal sectional view showing a converter with an oxygen lance and a sub lance inserted, and FIG. 9 is a molten metal fine particle in the converter with a conventional probe attached to a sub lance. Front view, partly in a longitudinal section, with a surface attached, Fig. 10 Longitudinal sectional view of a state in which the molten metal sub-lance periphery is moving sag to the probe side in the conventional example, FIG. 11 is a longitudinal sectional view showing a state in which withdrawal of the probe from the sub-lance in the prior art. 1 ... Molten metal, 2 ... Converter, 3 ... Oxygen lance, 4 ... Sub lance, 5 ... Probe, 6 ... Protrusion, 7 ... Shoulder, 13,13a ...
... gap, 15 ... thick metal, 16 ... tube, 17 ... connection tube, 17
a …… Inner cylinder, 17b …… Outer cylinder, 17c …… Protective cylinder, 19 …… Gas generating means, 20 …… Coagulation promoting means, 24a, 27a, 30b …… Flange, 24
b ... Notch, 26 ... Metal fitting.

Claims (8)

(57) [Claims] 1. A probe (5) for attaching a sample to a lower end of a sub-lance (4) to collect a sample of a molten metal and / or measuring a temperature of the probe, wherein a protrusion (6) at a lower end of the sub-lance.
A connecting tube (17) having an upper annular edge facing the sub-lance shoulder (7) above the protrusion with the connector tube attached thereto is provided above the probe: Gas generating means (19) made of a material that generates time gas is formed on the outer peripheral surface of the cylinder, and solidification promoting means (20) made of a metal material that solidifies the molten metal when the molten metal adheres is provided on the upper annular edge. A probe for sampling a molten metal and / or measuring a temperature, wherein the probe is configured as described above. 2. The connecting cylinder (17) is formed by extrapolating a protective cylinder (17c) on the outer periphery of an upper part of an inner cylinder (17a) made of a paper tube; the protective cylinder (17c) generates gas at high temperature. A gas generating means (19) made of a material to be formed is provided on the outer peripheral surface of the cylinder, and a solidification promoting means (20) made of a metal material for solidifying the molten metal when the molten metal adheres is provided on the upper annular edge of the protective cylinder. The probe for sampling and / or measuring temperature of a molten metal according to claim 1, wherein the probe is configured. 3. An engagement means (17c) for engaging the solidified metal when the molten metal adheres and solidifies on the gas generating means (19) formed on the outer peripheral surface of the protective cylinder (17c). 26) (2
3. The probe for sampling and / or measuring temperature of a molten metal according to claim 2, wherein 2) is provided in a dotted manner. 4. A probe (5) for collecting a molten metal sample and / or measuring a temperature by being attached to a lower end of a sub-lance (4), wherein a probe (6) at a lower end of the sub-lance is inserted and attached. A connecting tube (17) provided with an upper annular edge facing the sub-lance shoulder (7) above the projection in an upright position in the upper part of the probe: the connecting tube (17) is formed of a paper tube; The protection cylinder (17c) is formed by extrapolating a protection cylinder (17c) on the outer periphery of the upper part of the cylinder (17a). The protection cylinder (17c) includes metal materials (24) and (30) arranged on the outer periphery of the inner cylinder (17a). The metal members (24) and (30) are disposed on the outer periphery of the metal members (24) and (30) and have a two-layer structure of layers (25) and (29) formed of a material that generates a gas at a high temperature; Comprises a flange (24a) (30b) covering an upper end of the layer (25) (29) at an upper end thereof. Sampling and / or temperature measuring probe. 5. The layer (25) (2) from the outer peripheral surface of the protective cylinder (17c).
9) and the metal fittings (26) penetrating the metal materials (24) and (30) and reaching the inner cylinder (17a), and piercing the metal fittings (2).
6) fixing the protection cylinder (17c) to the inner cylinder (17a) and partially exposing the metal coupling (26) to the outer peripheral surfaces of the layers (25) and (29). The probe for sampling and / or measuring temperature of molten metal according to claim 4. 6. A probe (5) for taking a sample of molten metal and / or measuring a temperature by being attached to a lower end of a sub-lance (4), wherein a projection (6) at the lower end of the sub-lance is inserted and attached. A connecting tube (17) provided with an upper annular edge facing the sub-lance shoulder (7) above the projection in an upright position in the upper part of the probe: the connecting tube (17) is formed of a paper tube; The protective cylinder (17c) is extrapolated to the outer periphery of the upper part of the cylinder (17a). The protective cylinder (17c) is arranged on the outer periphery of the inner cylinder (17a) and is formed of a material that generates gas at high temperature. The inner cylinder (17a) has a metal material (2
7) is arranged, and an inner cylinder (17a) is provided at the upper end of the metal material (27).
A probe for sampling and / or measuring temperature of molten metal, comprising a flange (27a) covering an upper end of the probe. 7. The sampling of a molten metal according to claim 4, wherein the flanges (24a), (30b), and (27a) are provided with notches (24b) at intervals around the periphery. And / or a probe for measuring temperature. 8. The gas generating means (19) is made of a material selected from a synthetic rubber containing chloroprene rubber, or a high-molecular synthetic resin containing a phenol resin or a urea resin. A probe for sampling and / or measuring temperature of molten metal according to any one of 1 to 7.