Die-casting aluminum alloy, preparation method thereof and rotor end cover precursor

The invention provides a die-casting aluminum alloy, a preparation method thereof and a rotor end cover precursor. The preparation method of the die-casting aluminum alloy comprises the following steps that aluminum alloy raw materials are mixed and melted, and alloy aluminum liquid is obtained; the alloy molten aluminum is purified, and pre-die-casting molten aluminum is obtained; carrying out primary preheating and heat preservation operation on the die-casting mold; the pre-die-casting molten aluminum is conveyed to a die-casting machine to be subjected to die-casting operation, and an aluminum alloy die casting is obtained; the aluminum alloy die casting is subjected to die-casting water quenching operation, and die-casting aluminum alloy is obtained; and carrying out heat treatment operation on the die-casting aluminum alloy. According to the preparation method of the die-casting aluminum alloy, the yield strength and the tensile strength of the die-casting aluminum alloy can be effectively improved. 本申请