Production method for improving grain size of ADC12 aluminum alloy ingot

Abstract

The invention relates to the technical field of aluminum alloys, in particular to a production method for improving the grain size of an ADC12 aluminum alloy ingot. The method comprises the following steps of melting, drossing, silicon melting, fracture structure checking, cooling, slag removal, refining, gas removal, standing and ingot casting. The grain size of the ADC12 aluminum alloy ingot produced through the method is tested many times, and the detection results show that the grain size of the ADC12 aluminum alloy ingot is superior to or equal to the second level; and after pressure casting, the reject ratio of products is greatly reduced, and the phenomena of cracking, crisping and the like are well avoided.

Description

technical field [0001] The invention relates to the technical field of aluminum alloys, in particular to a production method for increasing the grain size of an ADC12 aluminum alloy ingot. Background technique [0002] ADC12 aluminum alloy ingot is a brand commonly used by die-casting enterprises in the Yangtze River Delta region, and its products involve industries such as automobiles and electronics. The current existing technology is too simple for the production process of ADC12 aluminum ingots, and the refining and degassing processes are mere formalities, so the product quality is at a relatively low level. [0003] The silicon content of ADC12 aluminum alloy ingot is required to be 9.6%-12%, which is higher than other grades. If the silicon melting process is unscientific and the operation is not in place, the macroscopic grains of the aluminum ingot fracture will be coarse. Such an aluminum ingot die-casting enterprise is difficult. Improvements are made during the ...

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Problems solved by technology

[0003] The silicon content of ADC12 aluminum alloy ingot is required to be 9.6%-12%, which is higher than other grades. If the silicon melting process is unscientific and the operation is not in place, the macroscopic grains of the aluminum ingot fracture will be coarse. Such an aluminum ingot die-casting enterprise is difficult. Improvements are made during the later remelting process, and serious quality problems will occur in later die-casting products

[0004] According to the existing production method to produce ADC12 aluminum alloy ingots, the grain size of the product is relatively coarse, which cannot meet and meet the further quality requirements of die-casting users

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