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          割炬

          割炬

          割炬的效用是使氧與乙炔按比重展開混合,形成預熱火焰,并將高壓純氧噴射到被切割的鑄件上,使被切割金屬在氧射流中燃燒,氧射流并把燃燒生成的熔渣(氧化物)吹走而形成割縫。割炬是氣割鑄件的主要工具。

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