Production method of NAK80 high-grade mirror surface plastic rubber mold material for mobile phone mold

The invention relates to a production method of an NAK80 high-grade mirror surface plastic rubber mold material for a mobile phone mold. The method includes the steps of: batching, electric furnace smelting, vacuum refining, vacuum pouring, electrode billet forging, electroslag remelting, square steel forging, normalizing and hydrogen diffusion annealing, and pre-hardening heat treatment. The method provided by the invention overcomes the disadvantages that the processability, polishing performance and use performance of domestic NAK80 plastic rubber mold materials cannot meet the requirement of an A2 level mirror surface for the mobile phone mold, and provides the production method of the NAK80 high-grade mirror surface plastic rubber mold material for the mobile phone mold. The produced mold material has a pure inside and uniform microstructure, and processing and polishing verification prove that the processability, polishing performance and use performance of the mold material all meet the A2 level mirror surface requirement.