Metal-based self-lubricating plate and preparation method thereof

The invention discloses a metal-based self-lubricating plate and a preparation method thereof. The preparation method comprises the following steps: carrying out cleaning and sand blasting treatment on the surface of a metal plate; preparing a lubricating material; a lubricating material is added into coating equipment and heated, and then the surface of the obliquely-arranged metal plate is coated with the lubricating material; the discharge ports are uniformly arranged in the width direction of the metal plate and have different hole diameters, and the hole diameters of the discharge ports are gradually reduced from the center to the two ends; and the metal-based self-lubricating plate can be obtained through rolling and curing, and the thickness of a surface lubricating layer ranges from 50 micrometers to 150 micrometers. The two coating modes of air spraying and rolling are combined, a lubricating material is made into colloid to be coated and rolled on the surface of the metal plate, and the problems tha