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Rated power: 260Kw+5% (1-100%) adjustable
Power supply: 380V, 3P, 50Hz
Max working temperature: 1200℃
Control zone: 2 zones
Effective working size: 2500×1500×1200mm (L×W×H)
Heating element connection: Y
Temperature uniformity: ≤±10℃
Temperature measurement accuracy: ±2℃
Non-load furnace power consumption: ≤18%
Temperature control method: SCR, PID regulator; Guolong temperature controller with overtemperature alarm;
Furnace surface temperature rise: ＜50℃
Heating element: 0Cr27AL7Mo2 (strip) 5-wall heating
Bogie face plate: G30, 35mm thickness, heat resistant steel
Loading method: Product loaded on the bogie, and then bogie moves into the furnace
Furnace lining: High temperature zirconium aluminum refractory fiber
Furnace door opening method: Electric hoist up-down, sealed by spring
Bogie moving method: By the reducer
Bogie driving power: 4KW
2. Structural Introduction
The RT2-260-12 furnace heat treatment for metal is mainly comprised of furnace body, lining, furnace door and door compression system, bogie, heating element, and temperature control system.
2.1 furnace body
The wholesale body steel structure is made from 10-12# sectional steel and ≥3mm steel plates.
2.2 lining
The wholesale car bottm furnace body is built with an all-fiber system. The lining material used is quality zirconium containing aluminum fibers fixed by round steel parts. The aluminum fibers are pre-compressed into blocks (compression gravity: ≥230Kg/m3 ) and then fixed to the furnace body by round stainless steel parts.
This refractory lining structure has the advantages of low heat conductivity, strong anti-shock capacity, and anti-erosion. The lining has a total thickness of 370mm.
The silicate aluminum fiber resists a maximum temperature of 1260℃. The material of round steel fixation parts is 1Cr13.
2.3 furnace door and door up-down system
The car bottom furnace door is comprised of all-fiber lining and steel structure casing.
Driving method of door: The furnace door is electrically lifted upward and downward by the hoist. And it is sealed by spring.
2.4 bogie
The bogie is comprised of bogie frame, wheels, refractory bricklaying body, heat resistant bogie face plate, heating elements, and bogie driving mechanism. bogie structure: the bogie frame is made from 14# beam and 10mm steel plates.
The bogie could work for a long time without deformation at full load.
wheel: The wheels are made from ZG55# steel casting. The transmission shaft is made from 45# steel, and it is heat treated. The transmission bearing is of the heavy type pillar bearing to bear the weight. There are a total of 2 pairs of wheels, and each wheel is of diameter 300mm. The bogie is motorized. And the driving motor is equipped with a braking speed reduction device to relieve the inertia at the start-up and stop movement. There are 2 limit switches to avoid over-travel of the bogie.
bricklaying body: The bogie is built with a heavy combination of high alumina refractory bricks, light refractory bricks, and heat preservation bricks. The bricklaying body of the bogie has heating elements installation slot for easy installation of the heating elements. The impacted parts and weight bearing area are bricked especially with heavy type high aluminum refractory bricks. There is also free space left for the refractory lining expansion when heated.
bogie moving mechanism: The bogie has a self-moving method. The reducing gear drives the bogie wheel to move. The bogie movement is smooth and stable.
Sealing among furnace door, furnace body and bogie: Sealing between the furnace door and the furnace body is through spring. The sealing between the bogie and the furnace body is through soft special shape bricks and fiber cotton block.
2.5 heating element
heating element: The 0Cr27AL7Mo2 resistance spiral-shape alloy resistance strips are mounted in 2 side walls, back wall, furnace door and bogie bottom. The resistance strips are produced through special molds, and are installed in the furnace wall by porcelain nails. And there is a porcelain gasket between the fiber wall and the resistance strips to avoid short-circuit. There are 2 heating zones. All lead-out conductor bars are made of φ16 0Cr27AL7Mo2 material.
2.6 electrical control system, 1 set
Temperature control: the furnace for heat treatment for metal adopt Shanghai Guolong intelligent temperature controller to control the temperature which has self-tuning function to calculate the ideal PID parameter and achieve a temperature stability.
The temperature controller has the functions of over-temperature alarm and thermal couple breakage protection.
