I, Usage:
The series of vacuum furnaces are periodic operating type furnace.
It uses graphite tube or graphite rod as the heating element, and
is suitable for the sintering of metals and inorganic metal
materials under vacuum or protective atmosphere conditions.
Meanwhile, it is also applied for the roasting and purification of
optical materials.
II, Main Technical Parameters
Model | Rated power | Rated temperature | Working area size | Ultimate vacuum | Remark |
ZT-25-20 | 25KW | 2000℃ | 90×120 | 6.67×10-3Pa | Single phase |
ZT-40-20 | 40KW | 2000℃ | 160×160 | 6.67×10-3Pa | Single phase |
ZT-50-22 | 50KW | 2200℃ | 160×200 | 6.67×10-3Pa | Single phase |
ZT-60-20A | 60KW | 2000℃ | 260×270 | 6.67×10-3Pa | Three phase |
ZT-60-20 | 60KW | 2000℃ | 200×350 | 6.67×10-3Pa | Three phase |
ZT-100-20 | 100KW | 2000℃ | 320×320 | 6.67×10-3Pa | Three phase |
ZT-150-23 | 150KW | 2300℃ | 300×450 | 6.67×10-3Pa | Three phase |
ZT-200-23 | 200KW | 2300℃ | 400×500 | 6.67×10-3Pa | Three phase |
III, Structure Description
This electric furnace is vertical and the furnace shell is designed
in dual layer water-cooled structure with inner layer of polishing
stainless steel and outer layer of high-quality anti-rust carbon
steel. The furnace lid with manual opening is designed with an
observation window and baffle. And the furnace body is also
designed with observation window, automatic access thermocouple
equipment, over-temperature protected thermocouple and infrared
thermodetector.
On the side of the furnace, it is equipped with water-cooled
electrode while the heating element is made of high-quality
graphite and the insulating layer is in composite structure of
carbon felt and graphite.
The vacuum system is made of oil diffusion pump and mechanical
pump. In the mechanical pump there designed a solenoid valve, and
the high and low vacuum valves are pneumatic baffle valve. With the
digital displayed composite vacuum gauge and PLC, it can achieve
the automatic switching of high and low vacuum.
The main loop of electric control system adopts low-voltage high
current input method, and the electric control cabinet’s design
refers to the Siemens standard control cabinet. The imported
digital displayed control instrument controls the heating/cooling
process automatically, there designed graphic simulating screen on
the control panel with human design and easy operation, being
direct. And the control system has functions of alarm with sound
and light when such abnormal phenomena occurred as water break,
ultra temperature, over-current and so on.
