| 摘要 |
PROBLEM TO BE SOLVED: To provide a measuring instrument which contributes to the elucidation of the occurring mechanism of delayed failure and calculates the correlation characteristics of the discharge amount and discharge temperature of hydrogen from a sample metal in a temperature region reaching the melting point or above of steel from the normal temperature in order to enhance the accuracy of estimating the occurrence of the delayed failure to measure the whole amount of hydrogen contained in the sample metal. SOLUTION: In a low temperature region, the temperature of a sample 20 is gently raised at an equal speed in a low temperature heating part 10a by a low temperature furnace 7 until the temperature of the sample 20 reaches the preset maximum temperature (about 500°C) of the low temperature region and, when the temperature of the sample 20 reaches the preset maximum temperature (about 500°C) of the low temperature region, the sample 20 is displaced to a high temperature heating part 10b by a displacement mechanism 21. In a high temperature region, the temperature of the sample 20 is gently raised at an equal speed by a high temperature furnace 8 in the high temperature heating part 10b until the temperature of the sample 20 reaches a preset temperature (about 1,600°C) higher than the melting temperature (1,573°C) of the sample 20. COPYRIGHT: (C)2010,JPO&INPIT
|
