Vacuum sintering furnace

Abstract

The invention discloses a vacuum sintering furnace comprising a furnace body, a furnace cover and a heating chamber arranged in the furnace body. An upper heat preservation screen, side heat preservation screens and a lower heat preservation screen are arranged on the periphery of the heating chamber. A glue discharge pipeline is arranged at the upper portion of the furnace body. Supporting columns are arranged at the lower portion of the furnace body, penetrate through the lower heat preservation screen, are arranged in the heating chamber and are used for bearing a machined workpiece. The glue discharge pipeline passes through the upper heat preservation screen and is directly inserted into the heating chamber. Heat insulation materials are lined to the inner wall and the outer wall of the part, arranged in the upper heat preservation screen and the heating chamber, of the glue discharge pipeline. The supporting columns penetrating through the lower heat preservation screen comprise an upper supporting column and a lower supporting column, wherein heat insulation materials are also arranged between the upper supporting column and the lower supporting column. The upper supporting column is hollow. A supporting steel board is arranged below the supporting columns and provided with a notch. By means of the vacuum sintering furnace, heat loss of the heating chamber is reduced, the uniformity of the indoor temperature is improved, and meanwhile the bearing capacity of the supporting columns and the supporting steel board is improved.

Description

technical field [0001] The invention relates to the field of high-temperature vacuum, in particular to a vacuum sintering furnace. Background technique [0002] Vacuum sintering furnace is an advanced heat treatment equipment, which can carry out various heat treatments such as vacuum heating, quenching, tempering, annealing, carburizing, nitriding, pressurized gas quenching, etc. of metal materials and workpieces. The vacuum heat treatment process can make the processed The performance of materials and workpieces is significantly improved, and the materials are fully utilized. A truly qualified vacuum furnace mainly takes the working vacuum degree, ultimate vacuum degree, pumping rate ratio, furnace room air leakage rate, heating power, and temperature uniformity as basic references, among which the furnace temperature uniformity is the qualification of the vacuum furnace. It is an important indicator, mainly to ensure that the parts or raw materials to be processed can be...

AI Technical Summary

Problems solved by technology

A truly qualified vacuum furnace mainly takes the working vacuum degree, ultimate vacuum degree, pumping rate ratio, furnace room air leakage rate, heating power, and temperature uniformity as basic references, among which the furnace temperature uniformity is the qualification of the vacuum furnace. It is an important indicator, mainly to ensure that the parts or raw materials to be processed can be heated within the specified temperature range, so that their microstructures are at the same stage as possible, and to prevent deformation of parts caused by differences in material expansion due to uneven temperature Due to the problems of heat loss and poor heat preservation effect in the support column installed at the bottom of the heating chamber of the existing vacuum high-temperature furnace and the glue removal pipe connected to the furnace, the local temperature in the heating chamber is uneven, which in turn affects the heating chamber of the vacuum furnace. thermal stability, which reduces the production quality of parts machined in the furnace

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