Working principle and structure description of vacuum hot press furnace

Vacuum hot press furnace is to heat the parts to the required temperature in the vacuum state, and then move the upper and lower pressure heads to make the parts compress and deform, and then the raw materials of the parts reach the process requirements of impurity removal, purification and high density. In addition to high temperature charging under the vacuum state can produce a variety of composite materials, but also can realize high temperature calcination, is a kind of multi-purpose vacuum technology. The vacuum hot pressing furnace has two types: resistance heating method and electromagnetic heating method.

Instructions on the construction of vacuum hot press furnace

1. The heating furnace of vacuum hot press furnace is a vertical test structure with two layers of water sandwich structure. The inner, surface and flange are 304 stainless steel. The furnace body of vacuum hot press furnace can be divided into two parts, one third of which is the furnace cover which can be opened and closed manually completely side, and two thirds of which is the fixed furnace body. The design is different, which is conducive to the practical operation.

2. Vacuum system: composed of oil diffusion pump, Roots pump, mechanical pump with electromagnetic differential pressure valve (to prevent sudden power failure, mechanical pump oil backflow) filling valve, discharge valve, vacuum butterfly valve, vacuum pressure gauge (±Pa) bellows, vacuum pipe and bracket.

3, hydraulic system: choose electric input method. The hydraulic station is equipped with imported proportional valve, pressure sensor, displacement display using grating ruler (ranging accuracy 0.02mm), hydraulic cylinder and other related hydraulic devices, pressure regulation semi-automatic, can be manually adjusted. The instrument can be set to automatically adjust the pressure, and can achieve pressure regulation and pressure preservation.

4, water cooling system: composed of a variety of valve pipeline related devices and with water cut off sound and light alarm automatically cut off the heating source or function.

5, temperature control system: the selection of SCR temperature control, equipped with PID functional instrument, digital display table, with overtemperature sound and light alarm function, can also choose PLC touch screen automatic control, and retain historical data, conducive to the analysis of calcination process.

6, inflation system: composed of a variety of pipes and valves, and equipped with electromagnetic exhaust valve, pressure sensor, when the pressure in the furnace is higher than the safety value will be automatically deflated, inflatable pipe is equipped with a needle valve, can control the air flow.

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