It is in the vacuum state to parts heated to the required temperature, up and down the two sides of the pressure head moving to make the parts compression deformation, and then parts of the raw material to reach the decontamination purification, high density and other process requirements. In addition to high-temperature charging and pressing in a vacuum state can produce a variety of composite materials, but also to achieve high-temperature calcination, is a multi-purpose vacuum technology.

Vacuum hot press furnace generally has several mechanical systems combined as follows.

1, vacuum hot press furnace heating furnace for the vertical test structure, the choice of two layers of water sandwich structure, the inner, surface and flange are 304 stainless steel. Direct air hot press furnace furnace body can be divided into two parts, one-third of which is the furnace cover can be manual type completely side switch door, two-thirds of the part of the fixed furnace body, the design is different, in favour of the actual operation.

2, vacuum system: by the oil diffusion pumps, Roots pumps, mechanical pumps with electromagnetic differential pressure valve filling valve, bleeder valve, vacuum butterfly valve, vacuum pressure gauge (± Pa) bellows, vacuum piping and brackets and other components.

3, hydraulic system: the choice of electric input method. By the hydraulic station with imported proportional valves, pressure sensors, displacement monitor selection of scale (measuring accuracy of 0.02mm) hydraulic cylinders and other related hydraulic devices, pressure adjustment semi-automatic, can be adjusted manually. Instrumentation can be set to automatically adjust the pressure, and can achieve pressure stabilisation and pressure maintenance.

4, water-cooled system: composed of a variety of valves and pipelines related devices and is equipped with water cut off sound and light alarm automatically cut off the heating source or function.

5, temperature control system: the choice of silicon controlled temperature control, configured with PID function meter, digital display meter, with over-temperature sound and light alarm function, can also choose PLC touch screen automatic control, and retain the historical data, is conducive to the analysis of the calcination process.

6, inflatable system: composed of various pipelines and valves, and is equipped with electromagnetic bleeder valve, pressure sensors, when the pressure in the furnace is higher than the safety value will be automatically deflated, the inflatable pipeline is equipped with a needle valve to control the inflatable amount.

1, every day before the start of the furnace should check the air pump with gas ballast function, and open it for 30 minutes according to the need, in order to remove the moisture in the pump oil.

2, check the cooling water, compressed air, hydraulic system pressure and cooling water flow.

3, before closing the protective door, should check the rubber seals and flanges of the vacuum furnace door. There should be no sand and debris. Rubber seals and flanges should be wiped clean with a thousand mesh bandages, and vacuum grease should be evenly applied before closing the door.

4, the workpiece must be cleaned before putting it into the furnace. After oil quenching, the oil on the oil-impregnated material racks and conveyor parts should be thoroughly cleaned....

5、Air is normally used to cool the motor. If it cannot be started in a vacuum, it must be inflated before starting and should be protected with an electrical interlocking protection device.

6, The pump should be operated under a vacuum of 133 3A or more and should be protected by an electrical interlocking protection device.