Preparation method of soft magnetic material for automobile fuel injection system

The invention discloses a preparation method of a soft magnetic material for an automobile fuel injection system. According to the preparation method, the alloy element ratio is optimized and accurately controlled, the molybdenum content is controlled, the corrosion resistance is improved, the smelting mode is optimized, the sulfur element content is improved, and the cutting performance is improved. The rolling technology is optimized, the steel ingot-steel billet rolling ratio is increased, sulfide distribution and shape are improved, and the original grain size of the material is improved while the cutting performance is improved; a continuous furnace heat treatment process is designed, and a slow cooling process of heating, heat preservation and cooling at different temperature sections of a chamber furnace material is simulated, so that the technical indexes of the material are met on the basis of improving the production efficiency. The method has the beneficial effects that the preparation of a product