JP2560846Y2 - 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 molten metal sampling probe used for analyzing components of molten metal.

[0002]

2. Description of the Related Art In a metal refining process, it is necessary to appropriately collect molten metal materials and control the operation of the components using an analytical instrument. The metal sample collected by using the molten metal sample collection probe is inserted into a paper or metal tube-shaped air-sending device, aired to the analysis room, the analysis surface is polished, and the fluorescent X-ray analysis or emission spectroscopy is performed. Is analyzed quickly.

[0003]

When a pneumatic metal sample is taken out from a pneumatic element, a method of punching the sample from above the pneumatic element with a punch is used. FIG. 5 shows a metal sample shape sampled by a conventional molten metal sampling probe. The metal sample shape is straight (a = b) or tapered (a <b>) from the bottom analysis surface to the top.
b) The shape of the sample is such that the sample inflow portion A is higher than the sample shoulder B in the upper shape of the sample.

[0004] In the conventional shape of a metal sample, when the sample is put into the pneumatic element or when the sample is taken out with the punch, the edge of the upper surface or the lower surface of the sample bites into the inner surface of the air element, and the sample cannot be taken out. However, the paper inside the respirator was torn, so that the reproducer could not be used many times.

[0005] In addition, when the surface of the sample taken out from the pneumatic element is polished by an automatic polishing machine for analysis, when the molten metal solidified in the conventional sample shape is solidified, the inflow portion protrudes above the sample. The sample cannot be stably pressed by the automatic polishing machine that presses on the sample shoulder because it remains, and the automatic polishing machine does not work. The present invention provides a metal sampling probe that facilitates removal from the pneumatic element, enables multiple uses of the pneumatic element, and enables secure chucking with an automatic polishing machine.

[0006]

SUMMARY OF THE INVENTION The present invention solves the above-mentioned problems. (1) In a molten metal sampling probe in which a sample collection container is incorporated in a paper tube, an opening is formed on a cylindrical side surface at an inflow port. A sample prog having a chamber and a vertically half-walled chill having a runner formed therein, and a concave disk-shaped sample collection chamber, wherein the thickness of the disk-shaped sample to be collected is The present invention is characterized in that a sampling chamber is provided which is tapered from the bottom to a substantially middle portion with a diameter at a central portion and has a diameter equal to the diameter of the middle portion and straight from the middle portion to an upper portion.

(2) The sample inlet (A) of the disk-shaped sample collection chamber is lower than the sample shoulder (B).

(3) The corner of the bottom of the disk-shaped sample collection chamber has a concave curved surface.

[0009]

The metal sample (FIG. 1) sampled by the molten metal sampling probe of the present invention has a tapered shape (a <c) from the bottom analysis surface to the middle, and the same diameter from the middle. The sample shape is straight (c = b) up to the top, the corners of the analysis surface are curved, and the sample shape is angled so that the thickness decreases from the outer periphery toward the inner side. Is located lower than the shoulder B of the sample, so that there is no problem from sampling to pneumatic feeding, polishing, and analysis, and the automatic analysis can be quickly performed.

[0010]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described together with its operation with reference to the drawings. FIG. 2 is a side sectional view of the molten metal sampling probe of the present invention. The molten metal sampling probe is entirely surrounded by a paper tube, and a paper tube 2 having a larger diameter is attached to the tip of a paper tube 1 serving as a holder.
A paper tube 5 having a built-in sampling unit sandwiched between a paper tube 3 and a paper tube 4 is mounted therein, and a paper or metal hole 7 is mounted on a sprue 6 of the paper tube 2.

The sampling unit comprises a cylindrical metal, shell or ceramic upper chamber 8 having an open side, a metal chiller 9 having a half-split structure having a runner 9b formed inside, and a metal concave surface. It is composed of a sample collecting container 10 in a shape of a circle.

The sampling space 10b is constituted by a chill 9 and a sampling container 10. The sample collection container 10 obtains a sample in which the corner at the bottom of the sample is a curved surface, the diameter c at the middle of the sample is larger than a with respect to the diameter a at the bottom of the sample, and the diameter b at the top of the sample is c. The bottom of the chill 9 is straight from the outer circumference to about 2 / 3R (R: radius) and is tapered downward from 2 / 3R to near the center. A constricted portion 9c is provided near the center of the bottom so as to be smaller in diameter than the runner 9b, and the constricted portion 9c is located below the straight portion. Since the metal thus collected is broken at the constricted portion 9c, the outer peripheral portion of the straight becomes the uppermost surface of the sample.

When the molten metal sampling probe of the present invention is immersed in the molten metal, the ana pig 7 is eroded and the molten metal flows from the spout 6 through the upper chamber space 8b and the runner 9b to the metal sampling space 10b. Collected. This metal sample is inserted inside the pneumatic element, and is pneumatically fed to the analysis chamber by a pneumatic tube. FIG. 3 shows a state of the metal sample inserted into the pneumatic element.

In the sampling chamber of the present invention, as shown in FIG. 3, the corner of the bottom of the sample (the upper surface of the metal sample 11 in FIG. 3) has a curved surface with a radius of curvature of 2 to 5 mm. There is no problem such as breakage of the plow. If the radius of curvature is less than 2 mm, it is not effective against breakage of the pneumatic element, and if it is more than 5 mm, it becomes difficult to secure an analysis area for the metal sample.

In the sampling chamber of the present invention, the sample inlet (A) is configured to be 0.5 to 2 mm lower than the sample shoulder (B). As shown in FIG. 3, since the sample has the tapered portion and the straight portion as described above with respect to the tapered pneumatic element, the end of the upper surface of the sample (the lower part in FIG. 3) does not contact the pneumatic element. Similar problems do not occur. The pneumatic element sent to the analysis chamber is punched out of the sample from above by a punch, and after removal, the surface of the metal sample is polished by an automatic polishing device.

FIG. 4 is a schematic view of an automatic polishing apparatus. The sample bottom surface, which is the analysis surface, is placed on the polishing belt 14 of the grinder 15 and the sample upper surface is pressed and polished by the chucking device 13. However, since the sample upper surface is flat, the chucking device 13 can surely hold the sample upper surface. There is no analysis failure due to poor polishing. Also, there is no need for repolishing. The surface-polished metal sample is subjected to component analysis by a fluorescent X-ray analyzer and fed back to the refining process. Although the above-described embodiment has been described with respect to an example in which only the sample collecting unit is provided, the present invention is naturally applied to a type in which a side temperature unit using a thermocouple or the like is attached to the lower end of the paper tube 3 for simultaneously performing temperature measurement and sample collecting. it can.

[0017]

[Effect of the Invention] By using the metal sample of the molten metal sampling probe of the present invention, it is easy to take out the sample from the pneumatic element, the sample cannot be taken out, or the paper inside the pneumatic element is broken. It became possible to use the pneumatic element many times. When the sample removed from the pneumatic element is polished for surface analysis by an automatic polishing machine, the flat sample can be held down at the sample shoulder, and it can be used with an automatic polishing machine, contributing to automatic analysis. Became possible.

[Brief description of the drawings]

FIG. 1 is a side view of a metal sample collected by the sampling probe of the present invention.

FIG. 2 is a side sectional view showing one embodiment of the present invention.

FIG. 3 is a diagram showing a state of a metal sample in a pneumatic element according to the present invention.

FIG. 4 is a schematic diagram of an automatic polishing machine device.

FIG. 5 is a side view of a metal sample collected by a conventional sampling probe.

FIG. 6 is a side sectional view of a conventional sampling probe.

[Explanation of symbols]

 1-5 paper tube 6 gate section 7 piglet 8 upper chamber 8b upper chamber space 9 chiller 9b runner 9c constricted section 10 sample collection chamber 10b sample collection space 11 metal sample 12 pneumatic element 13 chucking device 14 polishing belt 15 grinder

 ──────────────────────────────────────────────────の Continued on the front page (72) Inventor Takeshi Yoshizawa 1-3-920 Minamidai, Nagata, Minami-ku, Yokohama-shi, Kanagawa

Claims (3)

(57) [Scope of request for utility model registration] 1. A molten metal sampling probe in which a sample collection container is incorporated in a paper tube, wherein an upper chamber opening to a cylindrical side surface at an inflow port and a vertical half-split wall having a runner formed therein. A chiller and a sampling probe having a concave disk-shaped sample collection chamber, wherein the thickness of the disk-shaped sample to be collected increases in a tapered shape with a diameter at a central portion from a bottom portion to a substantially middle portion, and A probe for collecting a molten metal sample, comprising: a sample collection chamber having the same diameter as the diameter of the intermediate portion and being straight from the middle portion to the upper portion. 2. The molten metal sampling probe according to claim 1, wherein the sample inlet portion (A) of the disk-shaped sampling chamber is lower than the sample shoulder portion (B). 3. The probe according to claim 1, wherein the bottom corner of the disk-shaped sampling chamber has a concave curved surface.