JPH0526869A - Molten metal sample sampling device for automatic dipping device - Google Patents

Abstract

PURPOSE:To obtain a molten metal sample sampling device which can sample a sample of a high-class steel species such as an extremely low carbon steel without any contamination and can utilize an already installed automatic dipping device. CONSTITUTION:A ladle-type sampler 12 which is extended from a probe main body 1 whose tail edge portion is in cylindrical shape is provided. On the other hand, the ladle-type type sampler 1 is covered with a cylindrical exterior finish member 16 mounted to the probe main body 1 so that it can be removed freely. Then, when inserting a dipping lance 8 of an automatic dipping device into the probe main body 1, a removing means for removing the exterior finish member 16 from the probe main body 1 being linked to insertion is provided.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention, when collecting a sample of molten metal such as molten steel, makes it possible to collect a high-purity sample without contamination, and also enables use in an existing automatic dipping device. The present invention relates to a sampling device.

[0002]

2. Description of the Related Art In recent years, the number of high-grade steel grades has increased in the steel industry, and the carbon content of ultra-low carbon steel grades has tended to become extremely low-carbon. Therefore, in the refining process, when a sample of such molten steel is sampled and the components in the sample are analyzed, the carbon content must be analyzed with high accuracy. It is necessary to be able to collect a sample of high purity.

By the way, in the case of a conventionally well-known probe, since the probe main body is constituted by a paper tube and the sampling container is provided in the inside of the probe main body, a high-grade steel type such as the above-mentioned ultra-low carbon steel is Not suitable for taking samples. Since the paper tube that composes the probe body burns while it is covered and immersed in molten steel, molten steel contaminated by this combustion gas, etc. flows into the sampling container and the carbon content in the sample is unduly increased. Because I will do it.

On the other hand, conventionally, when a molten steel sample is taken by immersing the probe in molten steel, or when measuring the molten steel temperature or the oxygen in the molten steel, the probe is soaked in order to improve work safety and efficiency. An automated automatic dipping device is used and is known as disclosed in Japanese Patent Publication No. 52-28085. That is, this automatic dipping device, with a plurality of probes stacked in a filling case,
The lowermost probe is pulled out by the cutting device and dropped onto the transport device, and after the dropped probe is transported to the mounting device by the transport device, the probe is received by the receiving member in the mounting device and gripped by the chucking means. In this state, the probe is held upright, a dip lance descending from above is inserted into the probe held upright, and then the probe is lowered together with the dip lance to immerse in the molten steel.

[0005]

SUMMARY OF THE INVENTION In order to collect samples of high grade steels such as ultra low carbon steels as described above, the present inventors have proposed a simple ladle type sampler having no cause of molten steel contamination. It was found to be the most advantageous. Such a ladle-type sampler has a configuration in which an upper opening cup-shaped container is attached to the tip of a long handle, as disclosed in JP-B-53-26151 and JP-B-57-120253. Since the container is immersed in molten steel through the soaker, and so-called a sample is collected by so-called sampling, a high-purity sample without contamination can be collected.

However, needless to say, since the ladle-type sampler is intended for manual sampling work, not only the work efficiency cannot be improved, but also severe work is required in a dangerous environment. . Further, since the operation is performed manually, there are variations in the immersion depth and time of the container, which makes it difficult to repeatedly take a sample under the same conditions.

Therefore, it would be ideal if the sampling operation could be automated by using the existing automatic dipping device as described above while using such a ladle type sampler as a basic structure.
Unfortunately, the existing automatic dipping device has a problem that it cannot be applied to a ladle-type sampler because it is intended for a probe formed into a predetermined cylindrical shape by a paper tube.

Regarding this point, the above ideal can be realized by newly developing an automatic dipping device for a ladle-type sampler. However, many existing furnaces are designed for the cylindrical probe as described above. Since the old automatic dipping device was installed, when introducing a new device,
Old equipment must be taken out of service or discarded, which is never desirable from an economic perspective.

[0009]

According to the present invention, the operation of collecting a molten metal sample can be automated by using the existing existing automatic dipping device as it is, while the same function as that of the ladle-type sampler described above prevents contamination. Provided is a molten metal sampling device capable of collecting a high-purity sample.

The first means constituted by the present invention is as follows.
The automatic immersing device has a probe main body at least a tail end of which the insertion lance is freely attachable, and a container provided so as to project from the tip of the probe main body, and is extended from the container and attached to the probe main body. A ladle-type sampler having a handle, and a cylindrical exterior member that is detachably attached to the tip of the probe body and covers the container, wherein the immersion lance of the immersion lance is provided between the probe body and the exterior member. The point is that a detaching means for detaching the exterior member from the probe main body is provided in association with the insertion.

According to the second means of the present invention, at least the tail end portion of the automatic immersing device, into which the immersion lance can be inserted, is cylindrical, and the probe main body is slidably inserted. A ladle-type sampler having a container at the tip of the handle, and a cylindrical outer member that is detachably fitted to the tip of the probe body and covers the container. The insertion end of the immersion lance inserted into the probe body. The drive unit for contacting the scoop-shaped sampler to move the scoop-shaped sampler forward and the interlocking unit for moving the scoop-shaped sampler forward by interlocking the scoop-shaped sampler with the scoop-shaped sampler make up a detaching means for detaching the sheath member from the probe body. .

[0012]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described in detail below with reference to the drawings.

In FIG. 1, the probe main body 1 has a cylindrical insertion member formed of a single-layer or multiple-layer large-diameter paper tube at the tail end of a cylindrical cylinder member 2 formed of single-layer or multiple-layer paper tubes. 3, the cylinder member 2 and the insertion member 3 are fixedly integrated by nails or other fixing means 4, and the tail end of the probe main body 1, that is, the tail end of the insertion member 3 is made to have an opening 3a.

The cylinder member 2 constitutes a fitted portion 2a for fitting an exterior member, which will be described later, on the outer peripheral portion of the distal end, and has a cylindrical shape made of a paper tube in the vicinity of the fitted portion 2a. The positioning member 5 is externally inserted, a cylindrical guide member 6 made of a paper tube of small diameter is fitted inside the tip end of the cylinder member 2, and the positioning member 5 and the cylinder member 2 are fixed by nails or other fixing means 7. And the guide member 6 are integrally fixed.

The cylinder member 2 has an inner diameter such that the tip portion 9 of the immersion lance 8 in the automatic dipping device can be inserted with a sufficient clearance, and the insertion member 3 has the tip portion 9 of the immersion lance 8. Has an inner diameter into which the large-diameter holding portion 10 can be fitted. At the tail end of the cylinder member 2,
A receiving portion 11 whose inner circumference is tapered is provided so as to fit the tapered shoulder portion 10a of the holding portion 10.

The ladle-type sampler 12 includes an upper opening cup-shaped container 13 made of steel or ceramics, and the container 1
3 is provided with a metal handle 14 which is inserted into the guide member 6 in the cylinder member 2 and the drive part 15 is configured by fixing a metal disk to the insertion end of the handle 14. There is.

The drive portion 15 is fitted in the cylinder member 2 so as to be slidable in the axial direction, and a stopper for preventing the handle 14 from coming off when the tail end of the guide member 6 contacts the drive portion 15. 6a. Therefore, the ladle-type sampler 12 is attached in a state in which the container 13 is arranged at a position projecting from the tip of the probe body 1 and the handle 14 is slidably inserted into the probe body 1.

The exterior member 16 is composed of a paper tube of one layer or a plurality of layers, and constitutes a cylindrical body having an outer diameter substantially the same as that of the insertion member 3. This exterior member 16 is a ladle-type sampler 1
No. 2 container 13 and the portion of the handle 14 protruding from the tip of the probe main body 1 are arranged to cover the tail end of the exterior member 16 so as to be detachably fitted to the fitted portion 2a. To form the fitting portion 16a. However, the fitting part 1
6a is a detachable fit to the fitted portion 2a,
The fitting portion 16a is fixed to the positioning member 5 with an adhesive tape, or the fitting portion 16a and the fitted portion 2a are fixed with an adhesive.

A bottom member 17 made of a thick paper tube is fitted at the tip of the exterior member 16, and is fixed and integrated by a fixing means 18 such as a nail. As will be described later, the bottom member 17 constitutes an interlocking portion 19 that is pushed by the container 13 and interlocks with the ladle-type sampler 12 when the ladle-type sampler 12 is advanced.

In the above embodiment, when the immersion lance 8 is inserted from the tail end opening 3a of the probe body 1, the insertion end of the tip 9 of the immersion lance 8 contacts the drive section 15,
A ladle-type sampler 12 accompanies the insertion movement of the immersion lance 8.
Move forward in the direction of the tip. Ladle type sampler 1 to move forward
2 contacts the bottom surface of the container 13 with the interlocking portion 19 and pushes the interlocking portion 19 in an interlocking manner, so that the exterior member 16 moves forward while accommodating with the ladle-type sampler 12, and the fitting portion 16a is moved. It is detached from the fitted portion 2 a and is detached from the probe body 1.

Therefore, in the case of the above-mentioned embodiment, the drive unit 15, the interlocking unit 19, the handle 14 and the container 13 of the ladle-type sampler 12, as a whole, are immersed between the probe body 1 and the exterior member 16. The detaching means is configured to detach the exterior member 16 from the probe body 1 in conjunction with the insertion of the.

By the way, after the exterior member 16 has fallen off, the scoop type sampler 12 receives the drive portion 15 by the stopper 6a, so that the handle 14 is supported by the probe main body 1 and the container 13 is exposed at the tip of the handle 14. To do. In this state, the immersion lance 8 fits the shoulder portion 10a into the receiving portion 11 and presses the holding portion 10 into the inside of the insertion member 3 so that the probe main body 1 is fixed to the immersion lance 8. Hold.

A method of collecting a sample of molten metal will be described below based on the above embodiment.

The molten metal sampling device of the present invention is loaded in the filling case of the existing automatic dipping device described above. That is, a plurality of sheets are loaded in a laminated form. Therefore, when the automatic dipping device is operated, the molten metal sampling device in the lowermost layer is pulled out by the cutting device and is dropped on the transport device while rolling, as in the conventional case. The molten metal sampling device that has dropped is conveyed to the mounting device, then received by the receiving member of the mounting device, held by the chucking means to stand up, and the dipping lance that descends from above is opened in the upright holding state. 3a is inserted.

As described above, the molten metal sampling device of the present invention can be used as it is in the existing automatic dipping device as it is, both the insertion member 3 and the exterior member 16 provided at both ends of the cylinder member 2. This is because it is formed in a cylindrical shape, and the external shape is the same as or similar to that of the conventional probe which the automatic dipping device originally targets.

FIG. 2 shows a state in which the molten metal sampling device is held upright by the mounting device of the automatic dipping device. In the mounting device, a support plate 21 is rotatably supported on a base 20 and is rotatably supported by a cylinder device 23.
Chucking means 24, 25 are provided on the support board 21 and hold the mounting member 3 and the cylinder member 2 of the molten metal sampler. The lower part of the molten metal sampling device, that is, the exterior member 16 is centered by the positioning means 26. A guide cylinder 27 attached to the support plate 21 faces the upper side of the molten metal sample collecting device held upright, and a chute 28 faces the lower side. Until this state is reached, the molten metal sampling device has the exterior member 16
Is fitted to the probe body 1 by the fitting portion 16a.

With the molten metal sampling device standing upright, the immersion lance 8 is lowered and the tip 9 is inserted through the opening 3a of the insertion member 3, as shown in FIG.

As the immersion lance 8 descends, the tip 9 of the immersion lance 8 contacts the drive unit 15 in the probe body 1 to push down the ladle-type sampler 12 to move it forward.
The container 13 of the moving ladle-type sampler 12 is brought into contact with the interlocking portion 19 and is moved forward together with the exterior member 16. As a result, as shown in FIG.
a is detached from the probe body 1 and dropped downward.
In addition, the dropped exterior member 16 is the chute 2 shown in FIG.
It is sent to a predetermined position via 8.

When the holding portion 10 of the immersion lance 8 is fitted to the insertion member 3, the chucking means 24 and 25 are released,
The support wall 21 is turned over, the immersion lance 8 is moved to the furnace side, and the molten metal sampling device is exposed to the furnace side. Therefore, as shown in FIG. 5, the molten metal sampling device is immersed in the molten metal by lowering the immersion lance 8. In this state, the ladle-type sampler 12 hangs the ladle-type sampler 12 from the probe main body 1 and the container 13 is provided at the tip of the handle 14.
It is possible to collect a sample by filling the sample with. That is, in the above-described embodiment, the probe body 1 is made of a paper tube, but is not dipped, and the ditch is the handle 14
Therefore, the container 13 can collect molten metal without being affected by contamination due to combustion of the paper tube.

After the molten metal sample is taken, the immersion lance 8 is raised and the insertion member 3 is immersed in the immersion lance 8.
The sample taken out of the container and solidified in the container 13 is subjected to an appropriate analysis such as emission spectroscopy.

It goes without saying that the present invention is not limited to the above embodiments, and various modifications can be made without departing from the scope of the claims. For example, in the above-described embodiment, the scoop-type sampler 12 itself and the drive unit 15 and the interlocking unit 19 provided in association with the scoop-type sampler 12 constitute the separating means. The ladle-type sampler 12 is fixed to the probe body 1 instead of being used as a part thereof, and separately from this, an interlocking member such as a rod for pushing out the exterior member 16 in conjunction with the insertion operation of the immersion lance 8 is provided. A dedicated detaching means may be configured by slidably inserting the probe body 1.

Further, regarding the structure of the container 13, in the above embodiment, the upper opening cup-shaped container 13 is shown. However, various design changes can be made, for example, a tank-shaped container having an opening hole in its side. Is.

Further, in the above embodiment, the molten metal sampler for the purpose of sampling the molten metal is shown, but the sensor means for measuring the oxygen in the molten metal and the temperature together with the sampling. It is also possible to construct a multi-purpose probe in which the above are arranged in parallel.

[0034]

According to the present invention, the probe body 1 has the tail end portion formed in a cylindrical shape, and the exterior member 16 at the tip end portion.
Since it is formed into a cylindrical shape, it is possible to perform automatic insertion into the immersion lance 8 using an existing conventional automatic immersion device and automatic immersion into the molten metal by the immersion lance 8. When the immersion lance 8 is automatically inserted, the exterior member 16 can be automatically detached from the probe main body 1 by interlocking with the insertion of the immersion lance 8, so that the tip of the probe main body 1 can be attached before the immersion. The ladle-type sampler 12 can be projected in an exposed state, and the container 13 can be positioned at a position away from the probe main body 1 via the handle 14. From this state, the immersion lance 8 is lowered and immersed in the molten metal. A sample of high-purity molten metal that is not affected by contamination can be collected. As a result, there is an effect that it is possible to provide an apparatus suitable for sampling high-grade steel grades such as ultra-low carbon steel while using the existing automatic dipping apparatus.

[Brief description of drawings]

FIG. 1 is a vertical sectional view showing an embodiment of the present invention.

FIG. 2 is a front view showing a state in which an embodiment of the present invention is gripped by an automatic dipping device and is held upright.

FIG. 3 is a front view showing a state in which the immersion lance is being inserted into one embodiment of the present invention.

FIG. 4 is a front view showing a state in which the insertion of the immersion lance is completed and the exterior member is detached from the probe main body by the detaching means for one embodiment of the present invention.

FIG. 5 is a front view showing a state in which the insertion of the immersion lance is completed and the immersion lance is lowered to immerse the molten metal in one embodiment of the present invention.

[Explanation of symbols]

1 probe body 3 Insertion member 8 Immersion lance 9 Tip 10 Holder 12 Ladle type sampler 13 containers 14 patterns 15 Drive 16 Exterior material 19 Interlocking part

   ─────────────────────────────────────────────────── ─── Continued front page    (72) Inventor Haruka Kudo             1-7-10 Nishikawa-cho, Nishi-ku, Osaka-shi, Osaka             Sou Denki Kogyo Co., Ltd. (72) Inventor Keiichi Mori             1-7-10 Nishikawa-cho, Nishi-ku, Osaka-shi, Osaka             Sou Denki Kogyo Co., Ltd.

Claims (2)

[Claims] 1. An automatic dipping device, which has a probe main body at least a tail end of which a dipping lance can be freely inserted and which has a cylindrical shape, and a container which is provided so as to protrude from a tip of the probe main body and which is extended from the container. A ladle-type sampler having a handle attached to the main body, and a cylindrical exterior member detachably attached to the tip of the probe body and covering the container, and between the probe body and the exterior member. A molten metal sampling device for an automatic dipping device, characterized in that a detaching means for detaching the exterior member from the probe main body is provided in association with the insertion of the dipping lance. 2. A probe main body, at least a tail end portion of which is cylindrical, into which an immersion lance in an automatic immersion device can be freely inserted, and a ladle-type sampler having a container at a tip of a handle slidably inserted into the probe main body. A cylindrical exterior member that is detachably fitted to the tip of the probe body and covers the container, and contacts the insertion end of the immersion lance inserted into the probe body to advance the scoop-type sampler. Molten metal sampling for an automatic dipping device, characterized in that a drive unit and an interlocking unit for moving the exterior member forward by interlocking with a scooping ladle sampler constitute a detaching means for detaching the exterior member from the probe body. apparatus.