Vertical vacuum heavy pressure gas quenching furnace with rotatable material rest

Abstract

The invention discloses a vertical vacuum high-pressure gas-quenching furnace with a rotatable material rest, which is a bottom charging type vacuum furnace with a vertical downward-acting door and comprises a control system taking an industrial control computer and a PLC as main parts. The vertical vacuum high-pressure gas-quenching furnace is characterized in that: an inner circle of the inner side of a lower furnace door is provided with a rotating platform support which is coaxially provided with a rotating disc and the material rest, the lower part of the rotating disc is coaxially provided with a big gear, a pinion which is eccentrically arranged on a rotating driving mechanism is engaged with the big gear circumferencially to drive the rotating disc to rotate further to ensure thatthe material rest bearing workpieces can rotate around a vertical central axis; the root of the material rest is provided with a thicker thermal insulating layer, a lower shielding thermal insulatinglayer of a heating chamber is of a ring shape, and a ring platform shaped clearance is reserved between the thicker thermal insulating layer and the lower shielding thermal insulating layer; the rotating disc, the thermal insulating layer and the material rest on the rotating disc, and the rotating driving mechanism lift along with a furnace door; the vacuum furnace is controlled by adopting a PLCtechnology, and various actions, the temperature in the furnace and the rotation of the material rest are controlled interlockingly. The equipment can ensure that workpieces at various positions areuniformly heated, and the performances such as vacuum, positive pressure, dynamic seal, heat preservation, cooling and so on, are better assured.

Description

technical field [0001] The invention relates to a high-pressure gas quenching furnace in metallurgical equipment, in particular to a vertical vacuum high-pressure gas quenching furnace with a rotatable material rack. Background technique [0002] In the fields of military industry, aerospace and other processing technologies, the requirements for the uniformity of heating of the workpiece in the heat treatment process are getting higher and higher. However, in the vacuum high-pressure gas quenching furnace currently used, the workpiece is still in the furnace during high-temperature and high-vacuum operations. Due to the deviation of the furnace temperature, it is difficult to ensure consistent heating of the workpiece. Contents of the invention [0003] The object of the present invention is to provide a vertical vacuum high-pressure gas quenching furnace with a rotatable material rack, so that the workpiece can be rotated during heating, which can ensure the heating unif...

AI Technical Summary

Problems solved by technology

[0005] In the vacuum air quenching furnace with rotatable material frame of the present invention, when the workpiece is loaded in a high temperature state, the material frame can rotate around the vertical central axis, which can not only ensure that the workpieces in each part are heated uniformly, but also solve the problem of heat preservation at high temperature. The deformation of the heat insulation layer will cause scratches during rotation, and the heat dissipation of the insulation layer may affect the dynamic seal, so that the performance of the equipment in vacuum, positive pressure, dynamic sealing, heat preservation, cooling and other aspects has been better guaranteed.

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