Purification method of aluminum-lithium alloy melt

• Main Authors: HUANG YUKUAN, LI MING, SHAO HONGBANG, WEN JINCHUAN, LIU YU, HUANG YUANCHUN
• Format: Patent
• Language: Chinese; English
• Published: 28.06.2022
• Subjects: ALLOYS; CHEMISTRY; FERROUS OR NON-FERROUS ALLOYS; METALLURGY; PRETREATMENT OF RAW MATERIALS; PRODUCTION AND REFINING OF METALS; TREATMENT OF ALLOYS OR NON-FERROUS METALS

The invention provides an aluminum-lithium alloy melt purification method which comprises the following steps: proportioning alloy raw materials, and carrying out primary smelting to obtain a primary melt; electromagnetic stirring is adopted to stir the primary melt; under the action of a magnetic field, the stirred primary melt is subjected to secondary smelting, and a secondary melt is obtained; the secondary melt is refined, and a third melt is obtained; and the third-time melt is subjected to standing, slagging-off and filtering, and the purified melt is obtained. The invention provides a method for improving the cleanliness of the aluminum-lithium alloy melt by adding trace rare earth elements and combining a multi-configuration electromagnetic field purification and vacuum degassing technology and a tubular filtration technology, and a support is provided for manufacturing a high-quality aluminum-lithium alloy material. 本发明提供了一种铝锂合金熔体的净化方法，包括：将合金原料配料后进行一次熔炼，得到一次熔体；采用电磁搅拌对所述一次熔体进行搅拌；在磁场的作用下，将搅拌后的一次熔体进行二次