Magnesium alloy radiator and preparation process thereof

The invention discloses a magnesium alloy radiator and a preparation method thereof. The preparation method comprises the following steps: S1, polishing the surface of a magnesium plate; s2, carrying out ink screen printing on the surface of the magnesium plate to obtain an ink pattern; s3, the face, with the ink pattern, of the magnesium plate is overlapped with the magnesium plate treated in the step S1; s4, the magnesium plates stacked in the S3 are subjected to two-pass rolling compounding, a composite plate is obtained, the preheating temperature before first-pass rolling compounding is 280-350 DEG C, heat preservation is conducted for 15-30 min, and the pass rolling reduction is 30%-60%; the preheating temperature before second-pass rolling compounding is 470-530 DEG C, heat preservation is conducted for 20-40 min, and the pass rolling reduction is 50%-70%; s5, annealing treatment and punching treatment are carried out; s6, carrying out blow-up processing to obtain a pre-finished product of the radiator