石墨坩埚运用自然石墨,这样在运用过程中具有良好的抗变才干,良好的导热性能在冶炼金属方面发挥重要作用。
石墨坩埚主要有自然鳞片石墨与粘结剂,所以它有导热快、耐高温、热稳定性好、不与熔质起反响等优点,是有色金属熔铸器。但在高温强氧化气氛中运用极易氧化,因此在提供不同的热源时都应避免强氧化气氛,否则会降低其运用寿命。石墨坩埚还具有一定的抗机械性冲击的强度(熔材的投入时等);
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