The main structure of this steel belt reduction furnace is composed
of feeding section, reduction section, slow cooling section,
cooling section, pull off section and electric control systems,
etc. The feeding section includes charging platform and entrance muffle.
The charging platform is equipped with a charging car which can
move side-to-side to make sure the material lay on the steel belt
evenly. The furnace lining of the reduction section uses ultra energy
saving structure. The insulating layer of the furnace cover uses
entire textile fiber blanket module, which are fixed on the steel
board of the furnace cover by special method (commonly known as the
ceiling structure). This structure has the advantages of good
effect of heat insulation, low in energy storage, less in heat
lost, excellent in thermal shock, convenient in overhaul etc, which
greatly enhance the service life of the furnace lining. The parameter in electric stove’s power loss under empty stoves,
the exotherm of the stove wall as well as the uniformity of the
stove temperature all surpass the national standards. The muffle is made by bending the heat-resisting stainless steel
plate into ripple shape and welding. It uses a special
strengthening structure according to the high temperature mechanics
principle. A SiC board is put at the bottom to fit the thermal
expansion. And it also installs a prestressed device, which can
improve the service life greatly. The enters discharge hole uses roller type seal or uses gas curtain
, the textile fiber curtain seal . The sealing property is good,
the gas consumption is small. Composed by the transmission device and multistage stretching
device, the steel belt’s running rate can be controlled by the
frequency changer stepless speed regulation, demonstrating the
running rate directly. The heating temperature control unit table uses Japan (SHIMA)
Corporation’s intelligence temperature control unit.This instrument
has arranged self-adjust and the standard PID operation module
which could effectively prevent the overshoot of the temperature,
at the same time, this instrument is equipped with function’s
choice, function’s disposition and parameter’ set, and the set
value and the actual value can be displayed by figure. The major heating instrument uses the SCR series assembled
three-phase thyristor power controller, adopting continuously the
non-make-and-break type, which is not the traditional electrical
make-and-break type, but continually adjust the heating power
automatically according to the request of the warm controllers. It is in high precision when it faced high-power temperature
controller. And it produces no noise and has nil interference to
the inner power network. | 
