A high temperature pressure sintering furnace

Abstract

The invention relates to a high-temperature gas pressure sintering furnace, which includes a furnace hearth, a furnace body, a furnace cover, a heating element, a furnace cover hydraulic lifting and translation system, and a furnace bottom lifting and translation system. The wall is provided with installation holes for the heating element, and the heating element is a U-shaped heating element with cold ends at both ends. The cold end wiring room, and the cold end of the heating element and the corresponding heating element installation hole are sealed by a high-pressure seal. The cold end wiring room is a double-layer structure, and a circulating cooling system is installed in the cavity of the double-layer structure. water. The sintering furnace of the present invention can avoid phenomena such as wire clip melting, arcing, short circuit, oxidation, and cold end breakage of the heating element caused by excessive temperature at the cold end of the heating element in a high-temperature and high-pressure environment. The furnace has the advantages of light weight, good heat preservation effect, simple operation and convenient maintenance.

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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