Grain boundary diffusion treatment device for neodymium iron boron processing

The utility model relates to the technical field of rare earth permanent magnetic materials, and particularly discloses a grain boundary diffusion treatment device for neodymium iron boron processing, which comprises a heat treatment furnace, a graphene heat conduction pipe arranged in the heat treatment furnace, a plurality of insertion holes formed in the inner bottom wall of a heat treatment cavity, and a plurality of material fixing columns fixedly connected to the upper surface of a material frame plate, the material fixing columns containing materials to be processed can be inserted into the graphene heat conduction pipe through the inserting holes for heat treatment, the heat treatment efficiency is greatly improved, the multiple materials to be processed can be processed and produced at a time through the arrangement of the multiple material fixing columns, the production efficiency is further improved, and the production cost is reduced. And a triangular limiting block is fixedly connected to the cen