A kind of isostatic pressure gas quenching equipment

Abstract

The invention provides isostatic pressing gas quenching equipment which comprises a furnace body, a fan, a thermal insulation box and a heating device, wherein the fan and the thermal insulation box are arranged inside the furnace body; the fan is arranged outside the thermal insulation box and mounted at the front end of the thermal insulation box; the heating device is arranged in the thermal insulation box; the thermal insulation box comprises a box body, an air vent and an air door corresponding to the air vent; the air door is used for opening or closing the air vent; the box body and the air door are both made of a thermal insulation material; the box body is a cube; the air vent comprises a front air vent at the front end of the box body and a rear air vent at the rear end of the box body; a heat exchanger is arranged between the fan and the front air vent; four air inlets are formed at the end of the heat exchanger facing the front air vent and include a top air inlet, a bottom air inlet, a left air inlet and a right air inlet; and an air channel door for opening or closing the air inlet is arranged at each air inlet. The equipment provided by the invention can remarkably increase the cooling speed to realize a gas quenching effect, can realize uniform cooling and can freely adjust the air direction and air volume.

Description

technical field [0001] The invention belongs to the field of heating furnaces, and in particular relates to isostatic pressure gas quenching equipment. Background technique [0002] In the field of metallurgy, the heating furnace is an indispensable heating equipment. The material is subjected to high-temperature treatment in the heating furnace. For example, after the high-temperature sintering of the workpiece in powder metallurgy, it needs to be quenched. Quenching determines the final microstructure and performance of the heat-treated workpiece. . To obtain the ideal microstructure, the quenching cooling rate must be high enough, and the cooling rate must be as uniform as possible throughout the workpiece cross section. The commonly used heat treatment method is quenching with oil or water-soluble quenching liquid, but the cooling rate of the liquid medium cannot be adjusted during the quenching process, especially when quenching workpieces sensitive to deformation, it ...

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Problems solved by technology

[0005] The existing heating furnace can only rely on the heat exchange between the inert gas and the furnace wall, the heat exchange efficiency is low, and the heat exchange speed is too slow to realize gas quenching

More importantly, the air flow direction of the inert gas is single, and the air flow can only flow from the rear end of the incubator to the front end. The surface of the processed parts is heated unevenly, which often causes the rear end to cool too fast and the front end to cool too slowly. Uniformity is easy to cause uneven crystal phase structure inside the part, and stress concentration occurs inside the part, which affects the quality of the part

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