PREPARATION METHOD OF HIGH-ALLOYED LARGE-SIZED ALUMINUM ALLOY INGOT

The invention solves the problems of existing large-sized 7xxx series aluminum alloy ingots, such as spoor metallurgical quality, small ingot size, and insufficient deformation of a rolled ultra-thick plate resulting in substandard comprehensive properties of the plate. The method includes: Step 1....

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser:	TAN Yizhe, LIU Xiandong, TONG Youzhi, LI Yimeng, REN Weicai, WU Yizhe, ZHANG Xiangbin, WANG Fengchun, LI Xinbin, KONG Xiangsheng
Format:	Patent
Sprache:	eng
Schlagworte:	ALLOYS CASTING CASTING OF METALS CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES CHANGING THE PHYSICAL STRUCTURE OF NON-FERROUS METALS ANDNON-FERROUS ALLOYS CHEMISTRY FERROUS OR NON-FERROUS ALLOYS METALLURGY PERFORMING OPERATIONS POWDER METALLURGY PRETREATMENT OF RAW MATERIALS PRODUCTION AND REFINING OF METALS TRANSPORTING TREATMENT OF ALLOYS OR NON-FERROUS METALS
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Beschreibung
Zusammenfassung:	The invention solves the problems of existing large-sized 7xxx series aluminum alloy ingots, such as spoor metallurgical quality, small ingot size, and insufficient deformation of a rolled ultra-thick plate resulting in substandard comprehensive properties of the plate. The method includes: Step 1. Weighing and melting; Step 2. Carrying out refining and purifying, treatment with online two-stage degassing and two-stage filter devices, casting and addition of a refiner in sequence to obtain a large-size 7xxx alloy ingot blank; and Step 3. Carrying out homogenization heat treatment, face milling and sawing in sequence, then ending the method. The large-sized ingot of the invention meets the metal quantity requirement of the finished plate with a full size of 120 mm×1500 mm×18000 mm. The invention increases the yield rate and obviously improves the metallurgical quality of the ingot and the flaw detection yield of the plate.