Novel ultrasonic casting-rolling machine for manufacturing magnesium alloy plate blank

The invention relates to a novel ultrasonic casting-rolling machine for manufacturing a magnesium alloy plate blank. The ultrasonic casting-rolling machine comprises a casting-rolling trolley, a melt conveying liquid level control system and rollers. The casting-rolling machine further comprises ultrasonic probes which are arranged on the inner walls of the annular rollers. The upper roller and the lower roller are each internally provided with one ultrasonic probe. The ultrasonic probes are arranged in the parts, close to the casting-rolling area casting blank solidification leading edge positions, of the interiors of the rollers. According to the novel ultrasonic casting-rolling machine for manufacturing the magnesium alloy plate blank, the power ultrasonic probes are applied to the inner walls of the annular rollers, ultrasonic outer fields directly act on the casting-rolling solidification leading edge positions, and thus the structure refinement and homogenization effects of power ultrasound on the casti