Square furnace core for 2,500 DEG C tungsten-molybdenum sintering furnace made of refractory material

Abstract

The invention discloses a square furnace core for a 2,500 DEG C tungsten-molybdenum sintering furnace made of a refractory material. The square furnace core comprises an outer layer furnace core and an inner layer furnace core which are made of the refractory material. The outer layer furnace core is filled with the inner layer furnace core. A vent hole penetrating up and down is formed in the center of the inner layer furnace core. The outer layer furnace core and the inner layer furnace core are square in cross section. An expansion joint is arranged between the outer layer furnace core andthe inner layer furnace core, wherein the expansion seam is in the range of 0.2-5 mm. The furnace core is of a square structure, and the corresponding furnace lining is also of a square structure, sothat a sintered tungsten-molybdenum slab product is horizontally placed on a bottom support on the upper side of the furnace core, the top of the square furnace core is in flush with the top of the bottom support, the bending deformation of the sintered tungsten-molybdenum slab product is improved to the greatest extent, the straightening and leveling procedures of the tungsten-molybdenum productare greatly reduced, the production cost is reduced, and meanwhile, the influence of heating and pressure processing in the profile correcting process on the product quality is avoided.

Description

technical field [0001] The invention belongs to the technical field of tungsten-molybdenum processing equipment, and in particular relates to a square furnace core for a 2500°C tungsten-molybdenum sintering furnace made of refractory materials. Background technique [0002] The intermediate frequency induction sintering furnace is an important equipment used in the sintering of special metals such as tungsten and molybdenum. The maximum temperature of the currently used tungsten and molybdenum sintering furnace is 2300°C. Since the environment and temperature of different parts of the sintering furnace are different, the refractory material of the furnace core The structure of the refractory is not the same, resulting in different parts of the refractory service life is not the same. [0003] At present, the conventionally used tungsten-molybdenum sintering furnace has a circular hearth. When the slab is sintered, the space utilization rate is low, the energy consumption is ...

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Problems solved by technology

[0004] The purpose of the present invention is to overcome the deficiencies of the above-mentioned prior art, and provide a square furnace core for a 2500°C tungsten-molybdenum sintering furnace made of refractory materials, which overcomes 1: the conventionally used tungsten-molybdenum sintering furnace hearth in the prior art They are all circular. When the slab is sintered, the space utilization rate is low, the energy consumption is large, and the efficiency is low, which cannot meet the sintering of a large number of slabs; 2: The existing sintering furnace slab is prone to deformation during the sintering process, which is not convenient for follow-up 3: The deformed slab needs to be heated and corrected, which not only increases the production cost but also affects the quality of the product due to the heating and pressure processing in the calibration process; 4: It has not been proposed in the prior art for Questions about the corresponding square furnace core of the square tungsten-molybdenum induction sintering furnace, etc.

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