High Manganese Gas Fired Steel Heat Treat Furnace Car Bottom Furnace 7200×2200×1800mm

 High Manganese Gas Fired Steel Heat Treat Furnace Car Bottom Furnace 7200×2200×1800mm

1. Application

The gas fired bogie hearth heat treat furnace is mainly used for heat

treatment of metal parts.

2.Structural Introduction

2.1 furnace body

The body of bogie hearth furnace for heat treatment of metal is made from

12# -18# channel steel and 4-14mm steel plates. The side pillar and back

pillars are made from sectional steel, and are reinforced with sectional steel

bracings. The external wall of the furnace is painted with 2 layers of primers,

and 2 layers of coating paint. The key part of the furnace is painted with

heat resistant paint.

2.2 lining

The lining material is 1100℃ 1360type high aluminum refractory fibre

compacted block. This refractory lining structure has the advantages of low

heat conductivity, strong anti-shock capacity, and anti-erosion. Aluminum

silicate fiber compression block with thickness of 350mm is designed as

the high temperature refractory layer.

The total thickness of the furnace lining is 325mm. The lining adopts

composite large module structure and stainless steel round steel fixation technology.

The lining at high temperature section adopts aluminum silicate fiber

compression block, the thickness is 300mm.

2.3 bogie

The car bottom furnace design is comprised of heat preservation material,

bogie frame and moving mechanism. The refractory layer is divided into 3 sub-layers,

i.e., 1st top high-alumina brick layer, and 2nd and 3rd layer with both light clay bricks.

The bogie framework is made of 20# I-steel beam and 20# I-steel beam. The edges

of the bogie are made of 20# channel steel. The bogie is equipped with 10pieces of

wheels. Each wheel diameter is 350mm.

The car bottom furnace price is driven by motor reducer gear driving mechanism.

The moving speed of the bogie is 6-8m/min.

2.4 Sealing System

 The sealing between

the bogie hearth furnace door and the furnace body uses the electric push rod to press the closed

furnace door on the furnace door frame and the end face of the trolley. 

2.5 furnace door

The furnace door is comprised of all-fiber lining and steel structure shell. 

2.6 burning system

The burning system is comprised of Krom technology high speed burners, proportional

combustion control system, gas valve, solenoid valve, burner control box, etc. The

burner has the functions of automatic ignition, flame detection, and flame out alarm.

The burner controller receives the control signal of the temperature controller and

controls the large/small fire status of the burner based on the heat load requirement

so that adjustment of the temperature is realized.

2.6.1 air system

The air piping system is comprised of high pressure centrifugal fan, automatic

regulation valve, pressure gauge and pipes. The air volume is to match the gas

volume, and the air excess rate is lower than 1.20.

2.6.2 gas supply system

The general gas supply pipe is equipped with a pressure regulation device

(equipped with a filter), a low pressure switch and a pressure gauge. For the sake

of safety there is one fast cut-off valve on the general gas pipe.

2.6.3 discharge system

 The heat treating furnace pressure is controlled

in the optimum state (the surface of the trolley is in a slightly positive pressure). At this

time, the exhaust gas is in a dynamic equilibrium state, which can not only ensure that

the furnace gas does not overflow, but also ensure that the cold air outside the furnace

is not sucked into the furnace, so as to save energy and maximize the efficiency

of the furnace.

2.6.5 Heat exchange and flue system

A flue is set at the back of the furnace, and it is carried out with the heat exchanger

(according to the national standard GB3486-83). The flue leads to the outside of the

factory building. 

2.6.6 fault detection and alarm system

The heat treatment furnace has a complete fault detection, alarm, diagnosis, and safety protection

system. On the control cabinet there is an alarm lamp.

2.7 control system

control system has the following parts: Ⅰ. Burning control system; Ⅱ. Electrical

power control system; Ⅲ.temperature control system .

C) temperature control and record system

The system has the functions of temperature setup, control and digital display.

And also there is an audible and visual alarm at over-temperature situations.

Temperature control zone arrangement

A:temperature control system

B: instrument temperature control

3. Main Technical Parameters