KR0184720B1 - Sampling vessel for thermal analysis - Google Patents

Abstract

[purpose]

Provide a sampling container for thermal analysis of the components of cast iron and molten steel.

[Configuration]

The container 10 of the heat-resistant material has a first sample chamber 16 and a second sample chamber 18 separated by the partition wall 14, and are newly separated by the second sample chamber 18 and the partition wall 20. The first cutout groove 26 provided with the water flow 22, and the molten metal flowed in the 1st medical sample chamber 16 of the partition 14, and the upper part of the 2nd sample chamber 18 in the partition 20. A second cutout groove 28 through which the melt flows is formed in the melt flows 22.

Description

Sampling Container for Thermal Analysis of Molten Metals

The present invention relates to a sampling container for thermal analysis of molten metal, and more particularly to a sampling container used for thermal analysis of the components of cast iron and molten steel.

The conventional molten cast iron or steel molten metal is examined by thermal analysis test as a furnace test because it checks whether metal structures or properties are as desired or not before injecting them into the mold.

As a thermal analysis method of this molten metal, a molten metal of a cup-type container having an upper portion opened through a ceramic material, for example, a thermocouple, is collected using a bag or the like, and the end of the thermocouple is automatically measured for thermal analysis. This is performed by examining the cooling curve of the molten metal in contact with.

In addition, Japanese Patent Application No. 280664 No. 280664 of the Japanese Pyung Hwa Patent No. 280664 uses a sample of a cast iron molten metal as a sample to perform a thermal analysis. Techniques for determining whether spheroidizing agent or CVing agent is present in the molten metal by using two containers simultaneously are disclosed.

When molten metal is poured into the sampling container, it is not always possible to fill a certain amount of molten metal.

In other words, it has been attempted to collect a certain amount by filling the top of the container to overflow the molten metal from the container, but when the pouring speed is slow, the upper surface of the bath swells up to a certain amount, and if the speed is fast, it may not be enough. have.

Thus, there is a problem that the amount of melt injected into each of the two containers is not constant, and if there is a slight difference between the two, it affects the degree of thermal analysis and the comparison cannot be performed accurately.

In addition, when the molten metal of the sample is poured into the sampling container so that the molten metal is overflowed and the molten metal flows out of the container, the molten metal overflowed to the floor is deoxidized or spherical, and the working efficiency is reduced to the worker.

In view of the conventional container problems as described above, the present invention provides a method for the determination of the amount of sample between the sample measured by adding tellurium and the sample measured without adding tellurium. It is an object to provide a sampling container for thermal analysis.

Another object of the present invention is to provide a sampling container for thermal analysis of molten metal having a molten flow for receiving an excess molten sample flowing out of the sample chamber.

1 is a plan view of a sampling container for thermal analysis of molten metal of the present invention.

2 is a cross-sectional view taken in the direction of the arrow according to II-II of FIG.

3 is a cross-sectional view in the direction of the arrow according to III-III of FIG.

* Explanation of symbols for main parts of the drawings

10: sampling container 12: main wall

14 bulkhead 16: first sample room

18: Second sample room 20: Partition wall between second sample room and molten metal

22: molten metal 24: probe

26: the first notch groove 28: the second notch groove

In order to achieve the above object, the molten metal sample collection container of the present invention includes two sample chambers, a first sample chamber and a second medical sample chamber, molten metal, etc., and a first sample chamber, a second sample chamber, and a second sample chamber. By removing a certain amount of excess molten sample that is inserted into the sample chamber by removing grooves formed by cutting a part of the partition wall between the molten metals, the same amount of molten metal can be collected in each sample chamber, and the additional molten metal is collected in the molten metal. It is intended to be.

Hereinafter, preferred embodiments of the present invention will be described with reference to the drawings.

As shown in FIG. 1, the sample container 10 for molten metal is made of a heat-resistant material as in the prior art and has a somewhat bulky main wall 12. As shown in FIG.

According to the present invention, the container 10 is separated by the first sample chamber 16 and the second sample chamber 18, the second sample chamber 18 and the partition wall 20 having the same capacity separated by the partition wall 14. The molten metal 22 is provided.

In order to detect the temperature of the molten sample, the first and second angle sample chambers 16 and 18 are provided with a probe 24 which reaches a predetermined height through a central portion thereof, as in this type of sampling container. To attach.

The partition 14 separated from the first sample chamber 16 and the second sample chamber 18 of the container 10 has a predetermined depth from the upper surface thereof, and the second sample chamber 18 from the first sample chamber 16. The first notch groove 26 through which melt flows is formed.

Also, the partition wall 20 in which the second sample chamber 18 and the molten metal 22 are separated has a predetermined depth from the upper surface thereof, and the molten metal flows from the second sample chamber 18 into the molten metal 22. A second cutout groove 28 is formed.

Since the sample collection container 10 for thermal analysis of the molten metal of the present invention is configured as described in detail above, tellurium is previously added to one of the sample chambers in order to investigate the thermal analysis of the addition and the addition of tellurium. Place it.

Then, molten metal is injected into the first sample chamber 16 to fill the first sample chamber 16 with a predetermined amount of sample.

The molten metal continues to be poured into the first sample chamber 16 while the molten metal flows from the first sample chamber 16 through the first cutout groove 26 to the second sample chamber 18 and into the second sample chamber 18. ), And the excess molten metal is discharged to the molten metal 22 through the second notch groove 28 provided in the partition 20.

Using the present invention as described above, the collection of the molten metal can be injected into the first sample chamber 16, the first sample chamber 18 and the like without any special care, and thermal analysis is performed. It can be carried out precisely and accurately, and the excess flowing out from the second sample chamber is collected in the molten metal and does not scatter on the floor or the like.

Claims (1)

The container 10 made of a heat-resistant material is partitioned into a first sample chamber 16 and a second sample chamber 18 blocked by the partition wall 14, and the second sample chamber 18 and the partition wall 20 are formed. A first cutout groove (26) having a molten metal (22) obscured, and allowing molten metal to flow from the first sample chamber (16) to the second sample chamber (18) above the partition (14). And a second notch groove 28 through which the molten metal flows from the second sample chamber 18 to the molten metal 22 in the upper portion of the partition wall 20. Analytical sampling container.