Aluminum alloy cast rod and casting process thereof

The invention discloses an aluminum alloy cast rod and a casting process thereof, and the process for casting the aluminum alloy cast rod comprises the following steps: smelting foundry returns to obtain a casting solution; refining the casting solution to obtain a casting rod; the casting rod is subjected to homogenization heat treatment, and the casting liquid obtained by smelting the foundry returns comprises the steps that the foundry returns are melted, stirred for 20 minutes and then left to stand for a period of time, and a melt is obtained; slagging off the molten liquid, and then sampling and testing the component content of the molten liquid; pure molten aluminum is added into the molten liquid according to a test result, and the proportion of all components in the molten liquid is adjusted to meet the component proportion of the aluminum alloy casting rod; intermediate alloys Al-Ti-C-Re and Al-Ti-B-Re are added into the molten liquid, the intermediate alloys are fully molten, and casting liquid is