FAQ's Vacuum Furnace

All Vacuum Furnace

Cause:

(1) Drainage into the oil

(2) Long-term operation at high pressure causes the pump to overheat

(3) Mechanical expansion, the clearance is too small

Method of exclusion:

(1)Dismantle pump& repair

(2) The pump should not work long-term under high pressure

(3) Strengthen pump cooling

Cause:

(1) Air inlet pressure is too high

(2) Too much oil over the oil

Method of exclusion:

(1) reduce the pressure of the air inlet

(2) Release extra oil

Cause:

(1) Dirty suction pump

(2) suction gas temperature is too high

(3) Insufficient cooling water

Method of exclusion:

(1) Remove debris

(2) Cooling device installed on intake line

Cause:

(1) Damage to the heating screen/layer

(2) aging of heating elements

Method of exclusion:

(1) Overhauling or replacing the screen/layer

(2) Replace the heating element

All Vacuum Furnace

Cause:

(1) Thermal couple wire broken or contamination for thermocouples

(2) temperature control instrument failure

(3) Thermocouple compensation wire reversed or short circuited

 

Method of exclusion:

(1) Replace thermocouple

(2) Inspection according to the instrument manual

(3) Reconnect checking or exclude

Cause:

(1) Low furnace vacuum

(2) Quenching cooling oil is not completely degassed

(3) Work pieces submerged in the high temperature oil

 

Method of exclusion:

(1) Level up the furnace vacuum degree

(2) Quenching cooling oil degassing

(3) According to the required temperature into the oil

Cause:

(1) Low furnace vacuum

(2) Insufficient purity of protective gas

(3) No pre-evacuation of the gas filling line

 

Method of exclusion:

(1) Improve furnace vacuum

(2) Improve the purity of protective gas

(3) Before the furnace is ON, the gas pipeline should be pumped

Cause:

(1) High vacuum degree

 

Method of exclusion:

(1)Control the degree of vacuum based on the material grade

Didn't find the answer?

Email Sent. Thank You.
Your message has been submitted. We will contact you shortly.
Something went wrong. Please try again.