Low-temperature type hardness meter

Patent

Low-temperature type hardness meter

- 21 Jun 2007

1

TL;DR: In this paper, a low-temperature type hardness meter capable of certainly preventing the adhesion of frost to the surface of a sample at the time of measurement of hardness at a low temperature by housing a hardness meter body in a hermetic closure is presented.

Abstract: PROBLEM TO BE SOLVED: To provide a low-temperature type hardness meter capable of certainly preventing the adhesion of frost to the surface of a sample at the time of measurement of hardness at a low temperature by housing a hardness meter body in a hermetic closure using a high capacity globe box without internally evacuating the hardness meter body SOLUTION: The low-temperature type hardness meter 1 is equipped with a gas supply means (an Ar gas source 5, a nozzle 6, etc) for blowing a high-purity gas, which has a dew point temperature lower than the sample W against the sample W fixed on a sample stand 10 and the whole of the hardness meter 1 is housed in a gas replacing simple case 4 into which the high-purity gas is supplied Accordingly, even if a slight amount of the open air penetrates in the gas replacing simple case 4, a gas which has a dew point temperature lower than the temperature of the sample W and keeps the moisture content below the saturated steam pressure (amount) at the surface temperature of the sample W comes into contact with the surface of the sample W, so that the adhesion of frost to the surface of the sample W can be prevented COPYRIGHT: (C)2007,JPO&INPIT

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Citations

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Amamiya Hiroshi

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