Vacuum brazing furnace operation procedures

Vacuum brazing furnace operation procedures

Before a furnace, vacuum furnace and ensure that water, electricity, gas in the assignments. In 380 v voltage, can not have the deviation of 10%. Pressure in 0.6 Mpa, the water pressure to the lowest (0.5 Mpa). Reach the above requirements to electricity, after operation.
Second, before feeding, check the equipment heating chamber, the heating chamber is necessary to clean, can not have sundry, dust, oil, water, etc. In view to put goods, dry cleaning, same before feeding the without watermarks, oil and other washing clean.
Third, after loading, the knob to the "door close" position. Then, a "mechanical pump" and "thick smoke valve". Of vacuum unit and the furnace smoke gas, opened the vacuum furnace with the power supply (general vacuum gauge power to launch with total power supply).
Fourth, when the vacuum degree higher than 1000 pa, vacuum gauge monitoring "J2" light. This time, can open "roots pump. Conditions such as, "roots pump" will not open, click on the button no response.