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Development and Performance Test of High Precision Potassium Heat Pipe Furnace for Aluminum Fixed Point |
LIU Ying1,YAN Xiao-ke2,ZHANG Jing1,WANG Ning2,ZHANG Wen1 |
1. Chongqing Academy of Metrology and Quality Inspection, Chongqing 401123, China
2. National Institute of Metrology, Beijing 100029, China |
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Abstract As isothermal furnace liners, heat pipes can be used to improve the temperature uniformity of the fixed point furnaces. In order to improve the reproducibility of the freezing point of aluminum, a potassium heat pipe fixed point furnace for aluminum freezing point was developed. The production processes of potassium heat pipe and fixed point furnace were introduced, and the performance of the potassium heat pipe furnace was tested. The results show that there was no obvious temperature overshoot during the heating process of furnace startup, which can effectively extend the service life of the aluminum fixed point cell. The vertical temperature uniformity was 6.6mK. The repeatability of aluminum freezing point realized by the furnace was 0.02mK.
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Received: 16 April 2021
Published: 14 November 2022
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