Product Description:

Vacuum graphite has a high vacuum/inert atmosphere, and ultra-high temperature characteristics, which is widely used in quartz product, crystalline ceramics, composite material, high-temperature alloy and other fields.High temperature purification, powder metallurgy materials, tungsten carbide and other products of high temperature sintering in the whole process control can be completed by programmable PLC, equipment with chain protection, manual or automatic switching.There are upright and horizontal types of furnaces.

Construction Introduction:

Furnace is consist of the furnace door,furnace shell,heat shield,calorifier,stock platform and the others.

The furnace door is welded together using a double-layer head and flange plate, employing a double-walled structure with circulating cooling water inside both the inner and outer heads for cooling. The inner head of the furnace door is made of stainless steel plate.The furnace shell's inner and outer shells are made of stainless steel plate, featuring a double-walled water-cooled structure；the furnace body is equipped with electrode extraction devices, thermocouple temperature measurement devices, as well as gas inlet and exhaust holes；the furnace door is connected to the furnace body via door hinges and opens on the side；the furnace door is equipped with an observation hole and a door pressing device.The heat shield is made of graphite and carbon felt materials, adopting a circular structure. From the inside out, the first layer is composed of hard graphite felt, while the subsequent layers utilize graphite felt as thermal insulation material.The heater also adopts a circular structure, installed around the circular thermal shield to form a circuit. The heater uses a graphite plate as the heating element, which is easy to dismantle and repair. The insulating materials of the heater are all made of high-purity boron nitride. The material support frame is processed from graphite.

Vacuum System:

The vacuum system can be optional diffusion pump, Roots pump, mechanical pump, cold no-load limit vacuum can reach 6.67*10-3Pa, high vacuum flapper valve, vacuum pipe, vacuum gauge, vacuum pressure gauge, etc. The connection between the vacuum pipe and the pump adopts KF connection to ensure the realization of ultra-high vacuum. Vacuum measurement is measured by a digital display combined vacuum gauge.
　　The vacuum system consists of KT300 diffusion pump +BSV90 direct connection pump, high vacuum pneumatic baffle valve, vacuum pipeline and composite vacuum measuring instrument.

The Main Technical Parameter:

1.Rated Power:50-1000kw

2.Electric Furnace Voltage :30-36V

3.Heat Region: one region

4. The Highest Temperature: 1800℃

5.Effective Working Area(mm): φ330*280mm(Depth*height)

6. Limitation Vacuum Degree: 5.0*10-3Pa(cold, no-load condition.)

7.Vacuum system configuration :KT300 diffusion pump +BSV90 direct connection pump

8.Aeration mode: automatic aeration, gas medium: nitrogen, argon (positive pressure ≤0.03Mpa)
　　9.Temperature control mode: Kunlun on-state LCD touch screen + Japan Mitsubishi PLC control
　　10.Temperature control range: tungsten rhenium thermocouple

11.Temperature Control Accuracy: ≤±1℃

12.Material rack: high purity graphite 200*200*200mm, evenly divided into three layers.