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| Study on Sintering Technology of Th-W Billet in Medium-frequency Furnace |
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Received:May 11, 2020
Revised:June 28, 2020
Accepted:June 28, 2020
Published Online:January 29, 2021
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| DOI： |
| KeyWord:Th-W, billet, sintering, density |
| Author | Institution |
| liushanyu |
BGRIMM Advanced Materiasl Sclence&Technology Co.,Ltd |
| houyubai |
BGRIMM Advanced Materiasl Sclence&Technology Co.,Ltd |
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| Abstract: |
| In order to solve the problem of low density of Th-W billet sintering in medium-frequency furnace, the bottom, body and top cover of the medium-frequency furnace were technically transformed. After transformation, the thermal insulation effect of the tooling was improved and the heat resistance temperature of medium-frequency furnace was increased from 2300 ℃ to 2800 ℃. Then the sintering of Th-W billet was carried out, and the technological parameters of medium-frequency sintering of Th-W billet were studied. The results show that the sintered density at 2 300 ℃ is only 16.94 g?cm-3. When raising the sintering temperature to 2 800 ℃, at this time, it is close to the melting point of thorium oxide（3 220 ℃）. And the density increases to 18.70 g?cm-3 after sintering, which meets the requirements of subsequent processing. The technological parameters of the medium-frequency furnace sintered Th-W billet were studied. The sintering density of Th-W is not affected much by the way of extending the high temperature sintering time and increasing the heat preservation platform at 2800 ℃. |
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