JPH055496Y2 - - Google Patents

Description

[Detailed Description of the Invention] (Industrial Application Field) The present invention relates to a sampler for collecting samples for component analysis from molten metal, particularly molten steel.

(Prior Art) Many samplers for collecting samples for component analysis from molten metal have been proposed. For example, Japanese Utility Model Publication No. 50-18549 describes a technique in which the molten metal inflow opening of the sampler is covered with a soluble cap to prevent slag floating on the surface of the furnace from being mixed in when collecting an analysis sample from inside the converter. In Japanese Utility Model Application Publication No. 56-28537, a central inner hole smaller than the diameter of the sample chamber is provided between the sample chamber and the water reservoir chamber of the sampler, and the length of this central hole is defined as the length of the sample chamber. A technique has been disclosed that increases the thickness of the cutting blade by 3 to 10 times.

The conventional technique will be explained based on FIGS. 3 and 4. A mold 2 is provided inside a paper tube 1, and its upper surface is covered with a separating plate 4 having an inner hole 3 in the center. It is constructed by placing a hollow body 5 made of material thereon. The hollow body 5 has a hole 5A communicating with the inner hole 3 at the center of the bottom thereof, and a hole 5B communicating with the opening 1A provided in the paper tube 1 on the side surface. 6
is a soluble cap. The sampler 10 configured in this manner has a sample chamber 7 formed inside the mold 2 and a sump chamber 8 formed inside the hollow body 5, and such a sampler 10 is inserted into molten metal to collect a sample. Then, sample 9 is obtained as shown in FIG. In the figure, 11 indicates the metal of the feeder part.

(Problem to be solved by the invention) If the metal solidified in the sampler 10 as shown in FIG. 11
Even if you try to separate them, they cannot be separated easily.
In order to separate them, they must be cut using an impact cutting machine, but this requires a lot of effort and time.
There was a problem that the purpose of conducting analysis in a short time could not be fully achieved.

(Means for Solving the Problems) The present invention has been made to solve the problems of the prior art described above, and has a structure including a sample chamber and a water reservoir. A molten metal sampler having a central inner hole smaller than the diameter of the sample chamber between the sample chamber and the sample chamber, characterized in that the upper surface of the sample chamber is formed in the shape of an inverted funnel, and a float having a specific gravity smaller than that of the molten metal is inserted into the sample chamber. This is a molten metal sampler.

(Example) The present invention will be explained below based on the drawings. 1 and 2 are cross-sectional views showing an embodiment of the present invention.

As shown in FIG. 1, the present invention has a sample chamber 7 and a water reservoir chamber 8 inside a paper tube 1, and a space between the sample chamber 7 and the water reservoir chamber 8 is smaller than the inner diameter of the sample chamber 7. A sampler having a central inner hole 3 is characterized in that the upper surface of the sample chamber 7 is formed in the shape of an inverted funnel, and a float 12 having a specific gravity smaller than that of the molten metal is inserted into the sample chamber 7. It is a molten metal sampler.

The sample chamber 7 according to the present invention is formed by a mold 2 and an inverted funnel-shaped isolation plate 4A placed on top of the mold 2, and a hollow body 5 made of a refractory material is placed on top of the mold 2 to form a molten metal chamber. 8. In the figure, 1A is an opening, 5A, 5
B is a hole, 6 is a cap, and 10A is a sampler.

(Function) FIG. 2 is a diagram showing the state after the sample 9 is collected by the sampler 10A of the present invention. As shown in the figure, by inserting a refractory float 12 with a lighter specific gravity than the molten metal into the mold 2 in advance, when the mold 2 is filled with molten metal, the float 12 floats up due to buoyancy. is the center inner hole 3 of the isolation plate 4A.
After the molten metal is solidified, the float 12 blocks the metal 11 and the sample 9, so that only the sample 9 necessary for analysis can be easily taken out.

At this time, the molten metal filled in the mold 2 is quickly cooled by the isolation plate 4A, and the float 12
In order to prevent the liquid from solidifying before it closes the center inner hole 3, the partition plate 4A should be made of a material such as a refractory material with low thermal conductivity, and when the float 12 floats up due to buoyancy, it should be ensured that the In order to close the hole 3, it is necessary to tape the lower surface of the partition plate 4A into an inverted funnel shape as illustrated in FIG.

Further, the shape of the float 12 is also preferably spherical, as illustrated in FIGS. 1 and 2, for the same reason as described above.

Furthermore, due to the trade-off between manufacturing cost and the properties of the molten metal from which the sample is to be collected, the isolation plate 4A and the hollow plate 5 may be made of the same continuous member.

In other words, when sampling molten metal that does not necessarily require insulation between the hollow body 5 and the molten metal in it and the molten metal in the mold 2, and from which a sufficiently good sample can be obtained, the isolation plate is used. Even if 4A and the hollow body 5 are a continuous body of the same member, the effect of the present invention is the same.

(Effects of the invention) As described above, the sample collected by the sampler of the invention can be easily separated into the sample to be analyzed at the float position and the metals that are not required for analysis after the riser functions. This makes it possible to substantially eliminate the process and time required for cutting the sample, and has the effect of shortening the analysis time by that much.

[Brief explanation of the drawing]

1 and 2 are cross-sectional views illustrating the present invention,
FIGS. 3 and 4 are cross-sectional views illustrating the prior art. 1 is a paper tube, 1A is an opening, 2 is a mold, 3 is a central inner hole, 4 and 4A are isolation plates, 5 is a hollow body, 5A, 5B
is a hole, 6 is a cap, 7 is a sample chamber, 8 is a water chamber,
9 is a sample, 10 and 10A are samplers, 11 is a metal, and 12 is a float.

Claims (1)

[Scope of utility model registration request] In a molten metal sampler that has a sample chamber and a sump chamber, and has a central inner hole between the sample chamber and the sump chamber that is smaller than the diameter of the sample chamber, the upper surface of the sample chamber is formed in the shape of an inverted funnel, and the sample chamber is A molten metal sampler characterized by inserting a float with a lower specific gravity than the molten metal into the chamber.