Box-type vacuum and atmosphere medium-frequency induction sintering furnace and using method

Abstract

The invention belongs to the field of tungsten-molybdenum processing equipment, and particularly relates to a box-type vacuum and atmosphere medium-frequency induction sintering furnace. The box-type vacuum and atmosphere medium-frequency induction sintering furnace comprises a furnace shell, a furnace core assembly positioned in the furnace shell, a vacuum system connected with the furnace shell, a water path system and a gas path system, and the furnace core assembly is of a cuboid box type structure; a heating body, a refractory material and an induction coil are sequentially arranged around the cuboid box-shaped structure from inside to outside, and a furnace top cover is arranged at the top of the cuboid box-shaped structure; and the vacuum system is used for providing a vacuum environment for the interior of the furnace shell, the water path system is used for providing cooling water for the furnace shell, and the gas path system is used for providing working gas for the furnace shell. By the adoption of a hearth of the box type structure, a sintered tungsten-molybdenum plate blank product is horizontally placed on a discharging bottom support, bending deformation of the sintered material is improved to the maximum extent, the straightening and leveling procedures of the tungsten-molybdenum product are reduced, and the production cost is reduced.

Description

technical field [0001] The invention belongs to the field of tungsten and molybdenum processing equipment, in particular to a box-type vacuum and atmosphere medium-frequency induction sintering furnace and a use method. Background technique [0002] Vacuum and atmosphere medium frequency induction sintering furnace is an important equipment widely used in special metal processing industries such as tungsten and molybdenum. Induction heating is one of the good forms of electric heating. It uses Faraday's electromagnetic induction principle to convert electrical energy into heat energy, so that the three-phase power supply becomes intermediate frequency alternating current through the intermediate frequency induction power supply. When the alternating current passes through the induction coil, it is An alternating induction magnetic field is produced, that is to say an alternating magnetic flux whose magnitude and direction change over time. When a piece of conductive metal (...

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Problems solved by technology

[0003] At present, the conventional use of vacuum and atmosphere medium frequency induction sintering furnaces is a vertical circular type. When slabs are sintered, the space utilization rate is low, and it cannot satisfy a large number of slabs for sintering.

Moreover, in the sintering process, due to insufficient charging, the slab is prone to deformation during the sintering process, which is not convenient for subsequent processing and manufacturing. In order to save costs, the deformed slab needs to be heated and corrected, which not only increases the production cost but also increases the production cost. Because the heating and pressure processing in the calibration process have an impact on the quality of the product; the circular coil, due to the low space utilization rate, consumes a lot of energy and has low efficiency during use.

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