JP2582997Y2 - Molten metal sampling probe - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a sampling probe for collecting a sample to be used for analyzing a component of a molten metal in a metal refining process.

[0002]

2. Description of the Related Art In a metal refining process, component management has a great influence on quality. Therefore, it is necessary to frequently carry out sampling at each component adjustment stage and analyze the components.

[0003] Conventionally, as a sampling probe for emission spectroscopy, one having a disk-shaped sampling container is known. FIG. 1 shows a configuration example of such a probe. In this probe, the sample collection container 1 is housed inside double paper tubes 8 and 9 as protective tubes, and the space around the sample collection container 1 is a space, so that the cooling capacity of the sample is small, There was a problem that hot water spills and burn-in were easily caused. In addition, since the protective tube is made of paper, there is a risk that molten steel splash occurs and the sample is difficult to take out.

A composite sampler capable of simultaneously collecting samples for chemical analysis and gas analysis from molten metal is also known (Japanese Utility Model Publication No. 52-39509). This sampler is
A disk-shaped sample collection container is accommodated inside a shell mold outer cylinder, and a paper tube is fitted to the upper half of the outer cylinder. In this case, when the shell mold outer cylinder and the paper tube are fixed with a normal U-shaped staple, the outer cylinder breaks. Therefore, these are fixed with fire-resistant cement or a fire-resistant adhesive. For this reason, there is a problem that a long working time is required when manufacturing the probe, and a time for drying the cement or the like is also required, thereby increasing the manufacturing cost.

[0005]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention has been made in order to solve the above-mentioned problem, and has a sample collecting container housing member formed of a shell mold and a disk-shaped sample collection housed in a lower half portion of the housing member. A molten metal sampling probe comprising a container and a double paper tube fitted to a cylindrical paper tube mounting portion provided in an upper half portion of the housing member, wherein a side surface of the sample collection container is the housing. A molten metal sampling probe is provided which is in contact with an inner surface of a member and wherein the paper tube attaching portion and the paper tube are fixed by a single nail-shaped metal staple. In this probe, in addition to the disk-shaped sample collecting container, a pin-shaped sample collecting container may be further housed inside the sample collecting container housing member. It is preferable that about 2/3 or more of the side surface of the sampling container is in contact with the housing member so that the molten steel cools quickly.

Since the probe according to the present invention is easy to manufacture, the manufacturing time can be shortened and the cost can be reduced.

In the probe of the present invention, a double paper tube is fitted to a cylindrical paper tube mounting portion provided in the upper half portion of the sample collection container housing member. Therefore, this portion has a triple structure including a housing member formed of a shell mold and a double paper tube. Molten steel hardly penetrates between the paper tube and the paper tube because the paper tube is boiled, but there is a possibility that molten steel may slightly enter between the paper tube and the shell mold because the shell mold does not boil. . However, in comparison with the conventional double structure consisting of a housing member made of a shell mold and one paper tube, in the case of the present invention, the distance from the portion where molten steel enters to the side surface of the sampling container is one paper tube. Because it is larger by the amount, the intrusion of molten steel can be more completely prevented.

[0008]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of a probe according to the present invention will be described below with reference to FIG. This probe is a disk-shaped sample collection container 1 having a disk-shaped hollow portion 2 and capable of being divided into two parts, and a pin-shaped sample collection container whose inside is evacuated by a quartz glass cylinder whose tip is closed with an easily meltable material 12 that can be melted by a molten metal. 3,
And a sample collection container housing member 4 formed by a shell mold for housing these containers 1 and 3. The internal shape of the storage member 4 is formed corresponding to the external shape of the disk-shaped sample collection container 1 and the pin-shaped sample collection container 3, and the containers 1 and 3 are completely held and fixed by the storage member 4 in the illustrated state. ing. The sample introduction tube 5 of the container 1 communicates with the outside through a through hole 6 formed in the bottom wall of the container housing member 4, and has a cap 7 on the molten metal introduction side.

A cylindrical paper tube mounting portion 40 is provided in the upper half portion of the container housing member 4.
Paper pipes 8 and 9 are fitted and inserted into 0. A single nail-shaped staple 10 is inserted into the paper tube 9 from the outside of the mounting portion 40, and thereby the container accommodating member 4 and the paper tubes 8, 9 are fixed.

In the case of sampling with the probe according to the present invention, the probe may be attached to a cylindrical pipe-shaped indicator rod and immersed in molten metal. Then, the metal cap 7 is melted, and the molten metal flows into the container hollow portion 2 through the introduction pipe 5 and is cooled inside to be solidified into a disk shape. The air in the container 1 is discharged to the outside through the vent hole 11 and the inside of the paper tube 9. At the same time, the easy-to-dissolve substance 12 at the tip of the pin-shaped sample collection tube 3 is melted, the molten metal is sucked into the pin-shaped sample collection container 3, cooled, and solidified into a pin shape. The collected sample is broken and taken out. The disk-shaped sample is divided and taken out along the half structure of the container 1, and the pin-shaped sample is taken out by breaking the collection tube 3.

The effects obtained by the probe according to the present invention are as follows.

1) Since the paper tube and the sample collection container accommodating member are fixed with a single nail staple, the production time can be shortened and the probe structure can be simplified. As a result, the manufacturing process can be significantly improved, and the probe manufacturing cost can be reduced by about 15%.

2) Since the disk-shaped sampling container and the pin-shaped sampling container are in contact with and completely surrounded by the shell mold, the cooling capacity after the collection of the molten metal is large, and the sample collected has a low internal soundness. Rich, good casting surface and high analysis accuracy. In addition, even when the molten metal is at a high temperature, there is no occurrence of poor collection such as hot water spills and burn-in.

3) Since the sample collection container housing member is formed in the shell mode, there is no splash when the probe is immersed in the molten metal, and the safety of the sample collection operation is high. Further, since the shell mode becomes brittle due to the heat of the molten metal, the sample is easily taken out.

[Brief description of the drawings]

FIG. 1 is a diagram showing a configuration example of a conventional probe.

FIG. 2 is a diagram showing a configuration example of a probe according to the present invention.

FIG. 3 is a sectional view taken along line AA of FIG. 2;

FIG. 4 is a sectional view taken along line BB of FIG. 2;

[Explanation of symbols]

 1: Disc-shaped sampling container 2: Disk-shaped hollow part 3: Pin-shaped sampling container 4: Sampling container housing member 5: Sample introduction tube 6: Through hole 7: Cap 8: Paper tube 9: Paper tube 10: Staple 11: Gas vent hole 12: Easily soluble material 13: Shell block 14: Refractory cement 40: Paper tube attachment

Continuation of front page (58) Field surveyed (Int.Cl. ⁶ , DB name) G01N 33/20 G01N 1/10

Claims (2)

(57) [Scope of request for utility model registration] 1. A sample collection container housing member (4) formed of a shell mold, a disk-shaped sample collection container (1) housed inside a lower half of the housing member (4), and the storage member
(4) A molten metal sampling probe comprising a double paper tube (8) and (9) fitted in a cylindrical paper tube mounting portion (40) provided in the upper half part, The side surface of the container (1) is in contact with the inner surface of the housing member (4), and the paper tube mounting portion (40) and the paper tubes (8), (9) are made of a single nail-shaped metal staple (10). ), The molten metal sampling probe being characterized in that the probe is fixed by: 2. A sample collection container housing member (4) formed of a shell mold, a disk-shaped sample collection container (1) and a pin-shaped sample collection container (3) housed inside a lower half portion of the storage member (4). ), And a double paper tube (8) fitted in a cylindrical paper tube mounting portion (40) provided in the upper half portion of the housing member (4).
(9) wherein the side surface of the sample collection container (1) is in contact with the inner surface of the housing member (4), and wherein the paper tube mounting portion (40) and the paper Tube (8)
A molten metal sampling probe, wherein (9) is fixed by a single nail-shaped metal staple (10).