A three-chamber vacuum furnace

Abstract

The invention relates to a three-chamber vacuum furnace, belonging to the technical field of vacuum furnaces. The vacuum furnace comprises a cooling chamber, a heating chamber, a preparation chamber and a vacuumizing mechanism, wherein both sides of the heating chamber are respectively connected with the preparation chamber and the cooling chamber through separation walls; each separation wall is provided with a heat insulation door; the cooling chamber comprises an air quenching chamber and an oil quenching chamber, the upper part of the air quenching chamber is provided with an air charging quick-cooling mechanism, and the lower part of the oil quenching chamber is provided with an oil quenching oil tank provided with a stirrer; the heating chamber is provided with a gas convection circulation mechanism; and the heating chamber and each heat insulation door are respectively sequentially provided with a heat insulation layer, a vacuum layer and a stainless steel shell from inside to outside. The vacuum furnace has the advantages of safe oil quenching, uniform material heating, favorable heat insulation effect, energy saving and high machining efficiency.

Description

technical field [0001] The invention relates to a three-chamber vacuum furnace, belonging to the technical field of vacuum furnaces. Background technique [0002] At present, the existing vacuum furnace includes a cooling chamber and a heating chamber, and the cooling chamber and the heating chamber are separated by a partition wall; a gas quenching chamber and an oil quenching chamber are arranged inside the cooling chamber, and the gas quenching chamber is provided with an air-filled quick-cooling mechanism. source, while the oil quenching chamber performs oil quenching through the oil quenching tank. The inside of the heating chamber includes a heating chamber platform and a material frame. The material frame is placed on the heating chamber platform. At the same time, one or more heating tubes are evenly arranged in the heating chamber along the circumferential direction, and a vacuum mechanism is arranged outside the heating chamber. There is an entrance and exit of th...

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Problems solved by technology

[0003] 1. During oil quenching, because the processed materials are put into the oil quenching oil tank, the oil surface is heated unevenly and the oil splashes, so accidents are prone to occur

[0004] 2. The inside of the heating chamber is statically heated by the heating tube, so it is easy to cause uneven heating of the material, and a good processing effect cannot be achieved.

[0005] 3. The heat insulation effect of the furnace wall in the heating chamber of this design is not good, and the temperature between the cooling chamber and the heating chamber cannot achieve good heat insulation, so the heat dissipation is serious and the energy consumption is high

[0006] 4. The vacuum furnace of this design needs to open the heating chamber when the material is heated and processed. Therefore, every time the material is processed, the heating chamber must be evacuated and heated again, which wastes a lot of energy and is uneconomical and ineffective. Environmental friendly

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