Multi-angle sand-blasting metal surface treatment method for metal plate machining

The invention belongs to the field of metal plate machining, and particularly relates to a multi-angle sand-blasting metal surface treatment method for metal plate machining. The treatment method mainly comprises the following machining steps of sand blasting, electroplating, plastic spraying, electrophoresis and plastic dipping; and machining equipment used in the metal plate machining metal surface treatment process comprises a box body, wherein the box body is rotationally connected with a supporting shaft, the supporting shaft is rotationally connected with a fixing seat through a bracket,the fixing seat is in engaged connection with a sliding ring, the sliding ring is in rolling connection with the box body, the box body is fixedly connected with a sand blasting gun through a support, the sliding ring is matched with the sand blasting gun through a spoiler, a sieve plate is arranged at the end, away from the sand blasting gun, of the box body, and a sand accumulation bin is arranged at the end, close to