High-temperature lifting furnace

Abstract

The invention discloses a high-temperature lifting furnace. The high-temperature lifting furnace comprises a furnace shell, a heath arranged in the furnace shell, a furnace bottom lifting platform, a temperature measurement thermocouple, heating elements, an air inlet system and an exhaust pipe. The hearth is composed of a furnace top and a square furnace body. The bottom and the top of the furnace body are open. The furnace top is arranged on the top of the furnace body. The upper end of the furnace bottom lifting platform is connected with a furnace door used for closing an inner cavity of the hearth. The heating elements and the temperature measurement thermocouple are arranged in the furnace shell and extend into the inner cavity of the heath. The air inlet system is arranged on the lower portion of the hearth. The air inlet system is composed of an air inlet pipe and a preheater which is connected to the air inlet pipe in series. One end of the air inlet pipe is communicated with the inner cavity of the hearth. The other end of the air inlet pipe penetrates out of the furnace shell and is communicated with the outside. The exhaust pipe is arranged on the upper portion of the hearth. One end of the exhaust pipe is communicated with the inner cavity of the hearth. The other end of the exhaust pipe penetrates out of the furnace shell and is communicated with the outside. The high-temperature lifting furnace is good in sealing performance, uniform in furnace temperature and convenient to move and overhaul.

Description

technical field [0001] The invention belongs to the technical field of high-temperature furnaces, and in particular relates to a high-temperature lifting furnace. Background technique [0002] As we all know, the lifting furnace is mainly used for high-temperature sintering of diamond drill bits, diamond grinding wheel bonds, precision abrasives, powder metallurgy, and various structural ceramics. At present, the known lifting furnace is composed of a fixed furnace and a liftable furnace bottom. Outside the furnace is a furnace shell to protect the furnace. Between the furnace and the furnace shell is a refractory material for heat preservation. The lower part of the furnace is open. The bottom is composed of a liftable platform and hard mullite bricks on the platform. The samples to be fired are placed on the hard mullite bricks, and are lifted into the furnace from the lower opening of the furnace through the lifting platform of the furnace bottom. The silicon-molybdenu...

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Problems solved by technology

[0003] The above-mentioned traditional lifting furnace is mainly composed of refractory brick furnace and ceramic fiber or perlite furnace lining. The furnace lining absorbs a lot of heat, the temperature rises slowly, the furnace temperature is uneven, the energy consumption is high, and it is relatively heavy.

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