High-temperature atmosphere furnace with electromagnetic field

Abstract

The invention relates to a high-temperature atmosphere furnace with an electromagnetic field. The technical scheme is that the high-temperature furnace comprises a first power supply 1, a coil 2, a furnace shell 3, a heat insulation brasque 6, heating elements 7, a furnace hearth 8 and a vacuum pump 9, wherein the furnace shell 3 is an interlayer shell which is internally provided with a cooling water pipe 5, the external wall of the furnace shell 3 is wound with the coil 2, the coil 2 is electrically connected with the first power supply 1, an air heat insulation layer 4 is arranged between the inner wall of the furnace shell 3 and the external wall of the heat insulation brasque 6, 4-8 heating elements 7 are respectively arranged in the inner wall of the heat insulation brasque 6 and the external wall of the furnace hearth 8, the heating elements 7 are connected with a second power supply 11, the upper end of the furnace hearth 8 is provided with a furnace cover 10 with cold water, and the vacuum pump 9 is communicated with the furnace hearth 8 through the furnace cover 10 with cold water through a passage. The invention can control the atmosphere by the adjustable electromagnetic field, has the temperature of 1800 DEG C, and can meet the requirements of smelting and material industry to the electromagnetic field, temperature and different atmosphere.

Description

technical field [0001] The invention belongs to the technical field of high-temperature atmosphere furnaces. It particularly relates to a high-temperature atmosphere furnace with an electromagnetic field. Background technique [0002] The currently used high-temperature atmosphere furnace is mainly used for smelting and material sintering to determine the influence of process parameters such as atmosphere and temperature on smelting and material properties. Generally, resistance is used as a heating source, and its heating efficiency is low. [0003] The problem of low thermal efficiency has attracted the attention of scientific and technical personnel: the patented technology of "New Induction Furnace" (ZL95231985.3) provides a high-temperature furnace that uses electromagnetic field induction heating, and its thermal efficiency can reach 80%. However, the heating temperature range of the induction furnace is generally 1250-1650°C, and there must be an induction medium, s...

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Problems solved by technology

However, the heating temperature range of the induction furnace is generally 1250-1650°C, and there must be an induction medium, such as conductive metal or non-metal, which has great limitations; "Microwave Sintering Furnace for Powder Materials" (ZL200520051470.7) patented technology Provide a high-temperature furnace that uses microwave energy to couple with materials, uses the sintered material itself as a heating element, and heats the material to the sintering temperature. The maximum sintering temperature of microwave sintering can reach 2000 ° C, but this furnace needs to generate electromagnetic waves through a resonant cavity. The strength and strength cannot be changed, and it cannot be applied to metals due to the electromagnetic shielding effect; another person studies a heating furnace that generates a magnetic field through a coil during the electric heating process (Li Xiangcheng Gong Rongzhou, magnetic field-induced preparation of iron-nickel fibers and research on electromagnetic properties, Functional Materials. 2006 , 37(1).-27-28, 32), used for vapor deposition of materials, this kind of heating furnace uses the heating element of resistance wire, which can only generate a temperature of 500-600 ° C, and cannot control the atmosphere

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