Tilting high-temperature rotary tube furnace for continuous heat treatment

Abstract

The invention belongs to the industry and field of high-temperature heat treatment electric furnaces and particularly relates to a tilting high-temperature rotary tube furnace for continuous heat treatment. The furnace mainly comprises a furnace body, a rotating mechanism and a tilting device. The furnace body is provided with an airtight heart; the upper end of the furnace body is provided with a feeding device; the lower end of the furnace body is provided with a receiving device; the rotating mechanism disposed within the furnace body is connected with a high-temperature-resistant liner and drives the same to rotate, thereby driving material within the high-temperature-resistant liner to move. A heating and insulating device and a temperature measurer are disposed within the furnace body. The feeding device is used for conveying material, to be subjected to heat treatment, into the liner by the aid of the tilting device; after heat treatment at a target temperature is complete, the receiving device delivers out the material by the aid of the tilting device. The furnace allows uniform heat treatment, is capable of heating and cooling the material fast, is available for continuous operation, has high applicable temperature and is low in manufacturing cost.

Description

technical field [0001] The invention belongs to the field of high-temperature heat treatment electric furnace industry, and in particular relates to an inclined high-temperature rotary continuous heat treatment tubular furnace. Background technique [0002] In industry, in order to improve the heat treatment efficiency of materials, continuous heat treatment furnaces are usually used. At present, the electric furnace used for continuous heat treatment is mainly a belt furnace (Belt Furnace). Its structural feature is that it contains a gradient temperature rise and fall interval, so it is bulky, occupies a large area, and is expensive, making it difficult to be fully popularized and applied. The applicable temperature is generally below 1600°C. In order to increase the applicable temperature, it is necessary to further expand the gradient temperature zone, making the structure more complex and the volume larger. Although the belt furnace can realize continuous operation, th...

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Problems solved by technology

Cabot Corporation of the United States announced a continuous high-temperature rotary tube furnace scheme, patent WO099 / 67588, CN1312903A, using a high-temperature alloy container as the furnace tube, with threaded teeth on the inner wall, which can drive the material to move, and then realize the continuous feeding and discharging function. , the design scheme uses a high-temperature alloy container. In addition to the high cost, there are a series of problems: the heavy container causes easy loss of bearings, the low applicable temperature of the material itself, generally not exceeding 1700 ° C, and the easy embrittlement of the metal results in a low service life of the container. Wait

[0004] Generally speaking, the common feature of the above-mentioned tubular rotary continuous furnace is that it drives the material forward to complete the feeding and discharging through the use of a screw tooth transmission structure. The disadvantage of this structure is that it is difficult to avoid material residues, high temperature After treatment, the material is easy to solidify on the furnace tube and is difficult to remove

Although there are currently commercially available tiltable tube furnaces, they have certain limitations in structure and cannot achieve continuous heat treatment operations.

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