Bogie Hearth Heat Treatment Furnace 1200 Degree Car Bottom Type For Cast Steel

Product Specification

1200 Degree Celcius Electric Bogie Hearth Heat Treatment

Furnace Car Bottom Type for Metal Cast Steel Parts

1. Application

The RT2-260-12 electric bogie hearth furnace is mainly

used for heat treatment of steel structure parts, cast steel parts,

shaft bar parts, tool steel products, etc. The heat treatment furnace

is widely used for quenching, tempering,normalizing, annealing, and other

processes. 

2. Main Technical Parameters

3. 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.