| 摘要 |
PROBLEM TO BE SOLVED: To provide a screw made of 2D-carbon fiber reinforced carbon composite material, having sufficient strength as the screw used for fastening each component of a heat treating furnace or a CZ furnace and capable of smoothly fastening each component. SOLUTION: In this screw made of 2D-carbon fiber reinforced carbon composite material, carbon fiber is formed into plain weave cloth of spun yarn or plain weave cloth of filament, and a thread part of the screw is impregnated or/and covered with glass carbon, or impregnated or/and covered with pyrolytic carbon.
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