Preparation method and preparation device of metal semi-solid non-dendritic crystal slurry

The invention discloses a preparation method and a preparation device of metal semi-solid non-dendritic crystal slurry, and relates to the technical field of semi-solid forming. The preparation method comprises the following steps of: simultaneously pouring a first master alloy in a second casting ladle and a second master alloy in a third casting ladle into a first casting ladle, adjusting the pouring speed of the second casting ladle and the third casting ladle, so that the first master alloy and the second master alloy are simultaneously poured; enabling a target alloy formed by the first master alloy and the second master alloy to flow into an inclined plate through an outlet of the first casting ladle, wherein the inclined plate is fixed on a support, one end of the inclined plate is used for communicating with the outlet, and the other end of the inclined plate is used for communicating with external equipment; starting a vibration device to drive the inclined plate to be in a vibration state, wherein t