almost 4 years ago

The structure features of hot pressing sintering furnace are as follows

The hot pressing sintering furnace is composed of furnace body, furnace cover, insulation barrel, hot pressing device, heating body and power supply, vacuum system, water cooling system and temperature measurement system.

(1) The furnace body is made of stainless steel with double-layer structure, which is divided into inner and outer barrel bodies. The furnace bottom head is processed by spinning process. Because the force produced by the hot pressing device should be borne by the furnace body, the furnace body must have high strength and enough rigidity, and it must not deform under external force and high temperature. The center line of the fixed seat of the furnace bottom dynamic sealing device must be vertical to the upper flange of the furnace body to ensure the straightness of the lower ejector movement. The fixed seat of dynamic earth sealing device has good cooling conditions to extend the service life of the seal.

(2) The furnace cover of hot pressing sintering furnace is composed of furnace cover body, lifting oil cylinder and upper pressure head. The furnace cover is a double-layer structure, in order to bear the pressure transmitted by the lower ejector, it must have enough strength and stiffness. The lower end of the upper ram is in the high temperature zone when it works, so it must be forced cooled.

(3) The insulation barrel consists of insulation barrel, reflection barrel, insulation layer and barrel body, which are made of graphite, molybdenum sheet, graphite felt and stainless steel respectively. The reflecting barrel made of molybdenum sheet mainly resists the radiant heat generated by the heating element to avoid damaging the insulation layer and furnace body.

(4) The hot pressing device is composed of hydraulic station, oil cylinder, lifting oil cylinder, lower ejector and controller. The hydraulic station has two pressure outputs, one is to drive the furnace cover up and down, the other is to drive the hot press cylinder. There are two ways to control the hot press cylinder, manual or automatic. During automatic operation, the pressure can be automatically maintained according to the set pressure, so that the product is always in a constant pressure state. The speed adjustment range of the cylinder movement. The hot press oil cylinder must have high stability and can't shake when it works under load. The movement quality of the hot press cylinder is one of the important conditions to prepare high quality products. The lower ejector bar is a part that moves with load in the high temperature area. It bears the action of high pressure and high temperature, but also moves in the high temperature area. It is required that it can neither deform nor oxidize at high temperature. Therefore, it must have good cooling conditions and dynamic sealing performance.

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