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A sampling device for thermal analysis

A sampling device and thermal analysis technology, applied in the direction of sampling device, sampling, and analyzing materials, etc., can solve the problem that thermocouples can only be used once

Inactive Publication Date: 2004-10-27
SINTERCAST
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

An important disadvantage of many known sampling devices is that the relatively expensive thermocouples are used only once
[0010] Another disadvantage is that it is difficult to manufacture large quantities of sampling containers with similar characteristics in terms of geometric conditions and thermal states at low cost.

Method used

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  • A sampling device for thermal analysis
  • A sampling device for thermal analysis
  • A sampling device for thermal analysis

Examples

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Embodiment Construction

[0031] figure 1 Represents a sampling device 1 according to the invention comprising a double-walled sampling container 2, substantially cylindrical, open at the top and having a hemispherical bottom 2b provided with a flattened portion 2c, A sample 3 of solidifying molten metal is contained in a container 2 so that the sample is filled up to the mouth 12 of the container, the sampling device 1 also includes temperature-sensitive sensors 4a-b for thermal analysis and a sensor The support 15, the sensor support 15 comprises a radiation shield 19 fixed to the container 2 by legs 16, said support 15 and radiation shield 19 guide the protective tube 14 enclosing the sensors 4a-b and Hold firmly in place. The measuring portions 5a-b of the temperature-sensitive sensors (ie thermocouples in the description below) 4a-b are immersed in the sample 3 . Herein, the height of the cylindrical part 2a of the container 2 is approximately twice the height of the semicircular bottom 2b in or...

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Abstract

A sampling device for thermal analysis of solidifying metal, particularly compacted graphite iron is disclosed, comprises a container (2) essentially cylindrical, open at the top intended to be immersed down into and filled with a liquid metal to be analyzed, at least one temperature responsive sensor member (4), preferably two, a protective tubing (14) concentrically enclosing said sensor(s), arranged inside said container (2) and supported by a sensor support member (15) arranged above said container and attached to the container (2) by legs (16) and intended to guide and keep the sensors (4) in position, when immersed in the solidifying metal sample quantity (3) during analysis, said container (2) comprises an interior surface (17) intended to contact the sample quantity (3) during analysis, and an exterior surface (18) intended to contact the ambient atmosphere, said surfaces (17 and 18) being joined at the mouth (12) of the container (2), being equally spaced forming a closed insulating space (8), wherein said container (2) has a substantially semi-spherical bottom part (2b), having a concentrically arranged flattened part (2c).

Description

technical field [0001] The present invention relates to a sampling device for thermal analysis of solidifying metals, in particular to a sampling device for thermal analysis in the production of iron castings. Background technique [0002] Thermal analysis is a technique that monitors the temperature changes of a molten substance during solidification in order to be able to determine the microstructure of the substance in the solid state and thus its properties. This technique is accomplished by taking a sample from the melt, transferring it to a sample container, and by means of a temperature sensitive sensor such as a thermocouple or other device known in the art, Record and evaluate the temperature change with time of the sample during solidification. [0003] When using thermal analysis to record the solidification of molten metals such as compacted graphite iron (CGI), it is very important that this thermal analysis is performed under the same geometric conditions and ...

Claims

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Application Information

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IPC IPC(8): G01N25/02G01N1/10G01N1/12G01N33/20
CPCG01N1/125G01N33/206G01N33/205C21C5/4673
Inventor 帕特里克·波普拉亨里克·尼斯特伦
Owner SINTERCAST
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