Internal inclusion removal device and preparation method of ultrahigh-purity copper or copper alloy cast ingot

• Main Authors: LIU SEN, ZHAI XUESONG, CHANG XUHUI, JIE HUALIN, WAN XIAOYONG, ZHANG QIAOXIA, LEI JUNYUAN, WU SONG, ZHAO CHUANXING, HE XIN, BIAN XIAO
• Format: Patent
• Language: Chinese; English
• Published: 07.11.2023
• Subjects: ALLOYS; CASTING; CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES; CHEMISTRY; FERROUS OR NON-FERROUS ALLOYS; METALLURGY; PERFORMING OPERATIONS; POWDER METALLURGY; TRANSPORTING; TREATMENT OF ALLOYS OR NON-FERROUS METALS

According to the internal inclusion removal device for the ultra-high-purity copper or copper alloy cast ingot and the preparation method, the internal inclusion removal device for the ultra-high-purity copper or copper alloy cast ingot is arranged above a mold of a smelting furnace, and molten metal is poured into a buffer area during casting; a stable molten metal surface layer is formed at the contact position of molten metal and the slag baffle, the molten metal flows out of the lower portion of the slag baffle and enters a casting area, impurities floating on the surface of the molten metal are blocked and restrained from flowing out, after metal casting is completed, impurities such as inclusions and particles floating on the surface can remain in the device body, and therefore the inclusions in cast ingots are removed, and the casting quality is improved. The prepared 6N copper cast ingot or copper alloy cast ingot is free of inclusion inside, and the yield and the yield of products are remarkably impr