The operation procedure of vacuum hot pressing furnace

Vacuum hot pressing furnace is a kind of cyclic refolding operation widely used in cemented carbide. The principle of operation is to allow functional ceramics and powder metallurgy to be protected by hot pressing and sintering at high temperature and high vacuum, and by hot pressing and sintering and filling under gas. Then the operation steps of vacuum hot pressing furnace are particularly important.

1. Ensure the normal placement of vacuum hot pressing furnace body and normal operation state

Before opening the vacuum hot pressing furnace, ensure that the equipment is stably placed, that all knobs and valves are closed, and that the heating chamber is clean. Whether the water, electricity, gas source is working properly, etc., be sure to ensure that each part of the normal wealth and safety requirements.

Two, again confirm the display is correct

Please confirm whether there is alarm instruction after the electrical control cabinet is started, and the digital display of each instrument is correct and stable, which is also the reconfirmation of safe operation.

Three, according to certain steps

After OPERATING THE VACUUM HOT PRESSING FURNACE, first TURN OFF THE FUNCTION KNOB, AND then PRESS THE BUTTON of "CONTROL POWER SWITCH". Press the "Shut DOWN Computer" button on the operation panel of the Industrial control interface. When vacuuming the vacuum hot pressing furnace, please first open the coarse suction valve, open the rotary pump and the front valve, when the vacuum degree is below 6.OE+2Pa, open the Kairuze pump and diffusion pump. When the vacuum is lower than OE+OPa, close the crude suction valve and open the main valve. In reverse order, first close the main valve, open the crude pump, close the diffusion pump and roots pump, after the diffusion pump has cooled, close the front valve and rotary vane pump, and then close the crude pump.

Four, always pay attention to the normal operation of the machine

In addition to regular cleaning of dust and foreign matter in the electrical control cabinet, but also pay attention to the need to replace parts, at this time do not open the electrical control cabinet of non-professional personnel. And after the vacuum hot press furnace operation, please shut down the system. It is also necessary to keep the heating chamber clean and dry in daily life. Only in this way can we effectively ensure the normal operation of the machine.