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A rotary semi-shielded thermal shock sintering resistance furnace

A semi-shielding and thermal shock technology, applied in the direction of furnaces, crucible furnaces, furnace types, etc., can solve the problem of one-sided or uneven heating body, and achieve the effect of compact structure, low porosity and high density

Active Publication Date: 2015-12-23
CHONGQING UNIVERSITY OF SCIENCE AND TECHNOLOGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The purpose of this invention is to address the inherent defects of existing resistance sintering furnaces and the demand for special sintering technology in the development of new materials, by making the heating body in ordinary resistance furnaces present a one-sided or uneven distribution, and periodically shield the effect on the sample. Radiant heat, a thermal shock sintering resistance furnace is designed, which can realize thermal shock sintering with rapid and alternating temperature changes on the sintered body, and meets the needs of sintering of new inorganic materials such as functional ceramics

Method used

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  • A rotary semi-shielded thermal shock sintering resistance furnace
  • A rotary semi-shielded thermal shock sintering resistance furnace
  • A rotary semi-shielded thermal shock sintering resistance furnace

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Embodiment 1

[0023] Embodiment 1: as figure 1 Schematic diagram of the front view of the vertical bottom installation of the rotary semi-shielded thermal shock sintering resistance furnace and figure 2 As shown in the top view schematic diagram of the vertical bottom installation of the rotary semi-shielding thermal shock sintering resistance furnace, the mechanical rotating shielding part of the rotary semi-shielding thermal shock sintering resistance furnace provided by the present invention is an integrated form of a semi-shielding loading crucible and a rotating support rod. There is a small hole at the bottom of the furnace shell 1, and the fixing frame 10 made of aluminum oxide passes through the furnace shell 1 through the small hole. The outer diameter of the upper part of the fixing frame 10 is slightly larger than the outer diameter of the lower part, and it is tightly stuck in the small hole of the furnace shell 1 , the material of the integrated semi-shielding crucible 4, the ...

Embodiment 2

[0024] Embodiment 2: as image 3 Schematic diagram of the front view of the rotary semi-shielded thermal shock sintering resistance furnace with horizontal side installation and Figure 4As shown in the schematic diagram of the horizontal side-mounted top view, the mechanical rotating shielding part of the rotary semi-shielding thermal shock sintering resistance furnace provided by the present invention is in the form of a semi-shielding loading crucible and a separate rotating support rod. There are small holes on the side of the furnace shell 1. The fixed frame 10 made of high-temperature alloy steel passes through the furnace shell 1 through the small hole on the side of the furnace shell 1, and the fixed frame 10 is tightly stuck in the small hole of the furnace shell 1. The material is high temperature alloy steel, the material of the integrated loading crucible 6 and the crucible support frame 7 is high temperature alloy steel, the rotating support rod 8 is fixed by the ...

Embodiment 3

[0025] Embodiment 3: as Figure 5 As shown in the schematic diagram of the vertical top-mounted front view of the rotary semi-shielding thermal shock sintering resistance furnace, the mechanical rotating shielding part of the rotary semi-shielding thermal shock sintering resistance furnace provided by the present invention is in the form of a semi-shielding loading crucible and a rotating support rod. There is a small hole on the top of the furnace shell 1, and the fixing frame 10 made of alumina passes through the furnace shell 1 through the small hole. The materials of the arc-shaped semi-shielding plate 5 and the rotating support rod 8 are high-purity graphite, and the materials of the integrated loading crucible 6 and the crucible support frame 7 are high-purity graphite, and the rotating support rod 8 is fixed by a fixed frame 10, and rotates The outer wall of the support rod 8 and the inwall of the fixed mount 10 are smooth, and the outer diameter of the rotating support...

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Abstract

The invention aims to overcome the existing defects of an existing resistance sintering furnace and meet the requirements of special sintering technology by novel inorganic material development and discloses a rotating half occluded thermal shock sintering resistance furnace comprising a housing and a hearth arranged in the housing, heaters distributed on single side or unevenly, a half occluded loading crucible, a crucible supporting rod, a fixing frame penetrating the housing, a transmission device and a variable speed motor system. The variable speed motor rotates in low speed to drive the crucible supporting rod to rotate through the transmission device of a gear or belt, the radiation thermal of the heaters applied to a sample to be sintered is in the periodical occluded state through the rotation of the half occluded loading crucible, and the temperature of the sample to be sintered fluctuates periodically ranging from 3 DGE C to 100 DEG C. During sintering, sintered grains grow in a coordinated manner, the grains are uniform in sizes, stable in phases, uniform in distribution, high in density and low in porosity, and the lattice distortion is reduced.

Description

technical field [0001] The invention relates to a resistance sintering furnace, in particular to a resistance sintering furnace for performing thermal shock sintering on inorganic materials such as ceramics by rotating a semi-shielding plate. Background technique [0002] Sintering is the core link in the preparation process of inorganic materials such as ceramics. During the sintering process, the material forms unique physical and chemical characteristics such as crystal structure, particle size, morphology, dislocations, and defects, so that the material has specific properties. At present, the national defense industry and the field of science and technology have higher and higher requirements for the performance of materials, and higher and higher requirements for the preparation equipment of materials. Resistance sintering furnaces are widely used in the development and production of new materials. Generally, the position of the sintered body or sintered material is f...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F27B14/06F27B14/08F27B14/14F27B14/20C04B35/64
Inventor 邸永江贾碧邱杨施越
Owner CHONGQING UNIVERSITY OF SCIENCE AND TECHNOLOGY
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