High-temperature air pressure sintering furnace

Abstract

The invention relates to a high-temperature air pressure sintering furnace. The high-temperature air pressure sintering furnace comprises a furnace chamber, a furnace body, a furnace cover, a heating body, a furnace cover hydraulic lifting and horizontal moving system and a furnace floor lifting and horizontal moving system. The furnace chamber is of a double-layer structure. The sidewalls of the furnace body are provided with heating body mounting holes. The heating body is a U-shaped heating body, and the two ends of the heating body are cold ends. The outer sides, corresponding to the positions where the cold ends of the heating body stretch out, of the furnace body are further provided with cold end wiring chambers. The cold ends of the heating body are arranged in the cold end wiring chambers. The portions between the cold ends of the heating body and the corresponding heating body mounting holes are sealed through high-pressure sealing elements. Each cold end wiring chamber is of a double-layer structure. Inner cavities of the double-layer structures are filled with circulating cooling water. By the adoption of the high-temperature air pressure sintering furnace, the phenomena that fusion of cable clamps, arcing, short circuit, oxidation and breakage of the cold ends of the heating body happen at the wiring positions of the cold ends of the heating body due to a too high temperature of the cold ends of the heating body in a high-temperature high-air-pressure environment can be avoided; moreover, the high-temperature air pressure sintering furnace has the advantages that the furnace chamber is light in weight, the heat preservation effect is good, operation is simple, and maintenance is convenient.

Description

technical field [0001] The invention relates to the technical field of sintering furnaces, in particular to a high-temperature pressure sintering furnace. Background technique [0002] High temperature pressure sintering furnace is widely used in sintering equipment for various materials such as silicon carbide, silicon nitride, silicon aluminum oxygen nitrogen, high temperature alloy and hard alloy. Since the furnace body is of airtight structure, and the working atmosphere in the furnace is often required to have relatively high pressure and high temperature, in actual use, the wire clamp melting, arcing and short circuit often occur at the wiring position of the cold end of the heating element. , Oxidation, and breakage of the cold end of the heating element. The reason for the above phenomenon is mainly due to the unreasonable structural design of the existing high-temperature gas-pressure sintering furnace. Specifically, in the existing high-temperature gas-pressure fu...

AI Technical Summary

Problems solved by technology

However, in a high-pressure atmosphere, due to the fast gas convection, the high temperature of the working room transfers a lot of heat to the cold end of the heating element in the form of high-pressure air convection, causing the temperature of the cold end to be too high

It will lead to melting, arcing or short-circuiting of materials such as lead wires and clamps at any time. If it is an oxidizing atmosphere, oxidation will easily occur

At the same time, it is also very easy to damage the heating element (mainly the cold end is blown)

Seriously affect the normal operation of the sintering furnace and the service life of the heating element

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