| 摘要 |
PROBLEM TO BE SOLVED: To provide a temperature measurement technique of non-contact method of a molten pool which eliminates the measurement error to be generated in the case of emissivity is made into a fixed value, and capable of temperature measurement of the emitting molten pool. SOLUTION: A temperature measurement device 10 of the molten pool comprises: an infrared radiation detector 12 for detecting the energy intensity of the infrared ray radiated from the measurement point to be an object of temperature measurement; a dichroic radiation thermometer 11 as a radiation rate measurement means for measuring the radiation rate of the measurement point; and an operation processor 13 for calculating the temperature of the measurement point, based on the radiation rate. COPYRIGHT: (C)2007,JPO&INPIT
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