A hot air circulation sintering kiln device and its sintering method

Abstract

The invention discloses a hot-air-circulation sintering kiln device and a sintering method thereof. The hot-air-circulation sintering kiln device comprises a support table surface, wherein a preheating box, a high-temperature sintering box and a cooling and heat dissipation box are sequentially arranged on the support table surface from left to right; a discharge port of the preheating box communicates with a charge port of the high-temperature sintering box, and a discharge port of the high-temperature sintering box communicates with a charge port of the cooling and heat dissipation box; a conveying belt communicating with the preheating box, the high-temperature sintering box and the cooling and heat dissipation box is arranged on the support table surface, and the conveying belt moves towards the discharge port of the cooling and heat dissipation box from the charge port of the preheating box; and a charge preparation table is arranged at the charge port in the left side of the preheating box, and a discharge preparation table is arranged at the discharge port in the right side of the cooling and heat dissipation box. The carrying intensity of working personnel can be reduced; the preheating box is arranged for preheating a sintered product, so that high-temperature damage to the sintered product is avoided; and the dissipated heat is conveyed into the preheating box throughthe cooling and heat dissipation box and used for preheating the sintered product, so that cyclic utilization for the heat can be realized, and cost saving is benefited.

Description

technical field [0001] The invention relates to the technical field of powder metallurgy, in particular to a hot air circulation sintering kiln device and a sintering method thereof. Background technique [0002] The sintering of the sintering device refers to the transformation of powdery materials into dense bodies, which is a traditional process. People have long used this process to produce ceramics, powder metallurgy, refractory materials, ultra-high temperature materials, industrial solid waste treatment, etc. Generally speaking, the dense body obtained by sintering after the powder is formed is a polycrystalline material, and its microstructure is composed of crystals, glass bodies and pores. The sintering process directly affects the grain size, pore size, and grain boundary shape and distribution in the microstructure, which in turn affects the properties of the material. [0003] However, for the existing sintering kilns, there are generally defects such as unrea...

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Problems solved by technology

[0003] However, for the existing sintering kilns, there are generally defects such as unreasonable design, poor heat preservation effect, and low sintering efficiency. In addition, after the sintering is completed, the product needs to be cooled and cooled, and the product is not effectively used at this stage. heat released during cooling

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