Tubular furnace is a new type of electric furnace with high performance and high energy saving developed by international advanced technology. There are single tube, double tube, horizontal, open type, vertical, single temperature zone, double temperature zone, three temperature zone and other tube furnace types. Mainly used in colleges and universities, research institutes, industrial and mining enterprises and other experiments and small batch production. It has the advantages of safe and reliable, simple operation, high temperature control accuracy, good heat preservation effect, large temperature range, high temperature uniformity of furnace, many temperature zones, optional atmosphere, vacuum furnace type, etc. Single set point or 30-segment programmable controller is available. The energy-saving ceramic fiber material and double layer structure can reduce the external temperature to normal temperature. The average temperature is long, the operation is simple, the sealing is reli
It is a small high temperature tube furnace with CE certification. The furnace tube is made of high purity alumina corundum tube and the heating element is silicon carbon rod. Together with itself with two vacuum sealing flanges (flanges have been installed mechanical pressure gauge and non-inducted steel globe valve), the control system adopts high-precision SCR phase shift division control, temperature control mode adopts 30 program Settings, the highest temperature can reach 1400°C.
Double shell structure with air cooling system. The furnace adopts high purity polycrystalline alumina fiber, which greatly reduces the energy loss. The surface of the inner furnace chamber is coated with 1750 degree high temperature alumina coating imported from the United States, which can improve the reflectivity and heating efficiency of the equipment, and also extend the service life of the instrument.
Includes an intelligent temperature controller; PID automatic temperature control system; Intelligent 50-segment programmable control; Built-in overheat protection and thermocouple fault alarm; Temperature control accuracy: ±1℃.
Tubular furnace:
1, vacuum tube furnace, atmosphere tube furnace
Tubular furnace：
2, ordinary tube furnace, rotary tube furnace, multi-station tube furnace
3, split tube furnace, one tube furnace, vertical tube furnace, horizontal tube furnace
4, single temperature zone tube furnace, double temperature zone tube furnace, three temperature zone (multi-temperature zone) tube furnace
There are three kinds of lining structures commonly used in modern tubular heating furnaces: brick structure, refractory fiber spray structure and castable structure.
Brick structure
Brick lining is made of refractory brick, including standard refractory brick and special refractory brick lining. Its advantage is that according to the working temperature, working conditions and heat load of different parts of the heating furnace, different types, different properties and different grades of refractory bricks and refractory mud can be selected accordingly. Its disadvantage is that the integrity and sealing of the furnace lining are poor, and the construction efficiency is low.
Fire-resistant fiber spraying structure
Refractory fiber spraying is a special fiber spraying machine, the pre-treated loose fiber cotton is sent out of the spray gun at high pressure, and the inorganic binder is sprayed into the fiber cotton evenly through the outer ring of the spray gun through several sets of special fluid conveying equipment, and the two are mixed into one outside the gun and sprayed onto the inner wall of the furnace. The advantages of refractory fiber spraying construction technology are fast construction speed, no seams in the lining, good air tightness, especially suitable for the construction of complex and special-shaped furnace wall parts. The disadvantages are:
(1) Low lining strength, easy to be damaged by mechanical force during use;
(2) The resistance to airflow erosion is poor;
(3) The construction environment is poor, the quality is unstable due to human factors, and it is difficult to ensure the effect of equipment in operation and use.
Castable structure
The castable structure is mainly made of refractory materials such as heat-resistant concrete and castable. Its main advantages are good integrity and air tightness of the lining, high life of the lining, easy to realize mechanized construction operations, and high construction efficiency. The disadvantage is that the refractory must be used within the validity period, and the furnace lining repair is not as flexible as the brick lining.
It is a small high temperature tube furnace with CE certification. The furnace tube is made of high purity alumina corundum tube and the heating element is silicon carbon rod. Together with itself with two vacuum sealing flanges (flanges have been installed mechanical pressure gauge and non-inducted steel globe valve), the control system adopts high-precision SCR phase shift division control, temperature control mode adopts 30 program Settings, the highest temperature can reach 1400°C.
Double shell structure with air cooling system. The furnace adopts high purity polycrystalline alumina fiber, which greatly reduces the energy loss. The surface of the inner furnace chamber is coated with 1750 degree high temperature alumina coating imported from the United States, which can improve the reflectivity and heating efficiency of the equipment, and also extend the service life of the instrument.
Includes an intelligent temperature controller; PID automatic temperature control system; Intelligent 50-segment programmable control; Built-in overheat protection and thermocouple fault alarm; Temperature control accuracy: ±1℃.
Tubular furnace:
1, vacuum tube furnace, atmosphere tube furnace
Tubular furnace：
2, ordinary tube furnace, rotary tube furnace, multi-station tube furnace
3, split tube furnace, one tube furnace, vertical tube furnace, horizontal tube furnace
4, single temperature zone tube furnace, double temperature zone tube furnace, three temperature zone (multi-temperature zone) tube furnace
There are three kinds of lining structures commonly used in modern tubular heating furnaces: brick structure, refractory fiber spray structure and castable structure.
Brick structure
Brick lining is made of refractory brick, including standard refractory brick and special refractory brick lining. Its advantage is that according to the working temperature, working conditions and heat load of different parts of the heating furnace, different types, different properties and different grades of refractory bricks and refractory mud can be selected accordingly. Its disadvantage is that the integrity and sealing of the furnace lining are poor, and the construction efficiency is low.
Fire-resistant fiber spraying structure
Refractory fiber spraying is a special fiber spraying machine, the pre-treated loose fiber cotton is sent out of the spray gun at high pressure, and the inorganic binder is sprayed into the fiber cotton evenly through the outer ring of the spray gun through several sets of special fluid conveying equipment, and the two are mixed into one outside the gun and sprayed onto the inner wall of the furnace. The advantages of refractory fiber spraying construction technology are fast construction speed, no seams in the lining, good air tightness, especially suitable for the construction of complex and special-shaped furnace wall parts. The disadvantages are:
(1) Low lining strength, easy to be damaged by mechanical force during use;
(2) The resistance to airflow erosion is poor;
(3) The construction environment is poor, the quality is unstable due to human factors, and it is difficult to ensure the effect of equipment in operation and use.
Castable structure
The castable structure is mainly made of refractory materials such as heat-resistant concrete and castable. Its main advantages are good integrity and air tightness of the lining, high life of the lining, easy to realize mechanized construction operations, and high construction efficiency. The disadvantage is that the refractory must be used within the validity period, and the furnace lining repair is not as flexible as the brick lining.
