Carefully check whether the grounding wires of temperature measuring
instruments, thermocouples, and electrical equipment are intact. Check whether
there are other workpieces in the furnace and whether the furnace bottom plate
and resistance wire are intact. Whether the furnace door opening and closing
mechanism is flexible, etc.Vacuum
brazing of ceramic and metal materials Turn on the power. After a few
seconds, the circuit starts to work and the signal light turns on. Place the
adjustable thermometer millivolt meter at the required scale. The electric
furnace is heated and the constant temperature is automatically maintained.Vacuum
Heat Treatment for Gear Manufacturing ③Heating should be carried out step by
step for the first time, that is, 20-200℃ for 3 hours, 200-400℃ for 3 hours, and
400-600℃ for 2 hours. ④The loading and unloading of workpieces must be done
without power. When loading the furnace, do not throw workpieces with force to
avoid damaging electric heating elements, furnace bottom plates, etc.; it is
strictly prohibited to load wet workpieces into the furnace to avoid breaking
the refractory bricks on the furnace wall; Application
example of vacuum heat treatment technology in mold the workpieces and
electric heating elements heated in the furnace should be kept at 50-50°C. 7Omm
distance; workpieces should be placed neatly and not stacked too high to avoid
damaging the thermowell.Powder
Metallurgy Gear Manufacturing Process