Vacuum sintering furnace system

The utility model relates to a vacuum sintering furnace system which comprises a vacuum sintering furnace configured to sinter a neodymium-iron-boron magnet compact in a vacuum state to form a neodymium-iron-boron magnet blank; the multi-stage vacuumizing unit is connected with the vacuum sintering furnace through a communicating channel so as to vacuumize the interior of the vacuum sintering furnace; and the filtering device is arranged in a communicating channel between the vacuum sintering furnace and the multi-stage vacuumizing unit and is used for condensing volatile matters and filtering impurities and condensed cakes. According to the scheme, the filtering device is reasonably arranged in the vacuum-pumping system, in the sintering process, volatilized flying dust, organic additives and superfine powder are completely blocked, the continuous working state without shutdown can be achieved, and pipelines of the vacuum system are free of pollution. 本申请涉及一种真空烧结炉系统，包括：真空烧结炉，被配置为在真空状态将钕铁硼磁体压坯烧结形成钕铁硼磁体毛坯；多级抽真