CONTINOUS CASTING PROCESS
It is the modernized plant for casting billets. Here
billets produced directly from the liquid steel. It has a system of turret
where two ladles are placed. Turret can move through its axis, when one ladle
is full of steel and goes into operation, other
is open and on the opposite side of the turret to get steel ladle
capacity is 110 tons each. Steel falls down from the ladle through slide gate
which is at the bottom of the ladle. It passes through the billetmoulds and gets its size. Here some
nozzles are provided to cool down hot billets and helps in acquiring the solid
shape. Billets pass through curved channel. The radius of curvature is 6 mts.
Here 6 strands are there to produced to 6 billets simultaneously. The billets
are passed through shears by means of rollers where they are cut to the required size.
The length of the billets are 6m,
9m,12 m. weight is 78kg/mt. billet size is 100×100 mm, casting temperature =
1530-15800 C, shear angle is 120 4’ and
cutting is 20. Lubricant used is rapeseed oil. Inlet and outlet
temperature difference is 40 to 500C.
There are two casting machines in CCP.
Each machine has 6 stands.
The
shop has following facilities:
·
Pouring
of argon gas from homogenization of liquid steel.
·
Ladle
turret for quick change of ladles
·
Shrouding
system for protection of metal from oxidation
·
Automatic
mould level control
·
Mechanized
shear.
·
Turnover
cooling bed for uniform cooling of billets.
The
main advantages of this process are:
·
Cost
of production is very low
·
Productivity
is very high
·
Very
good quality
·
Very
low heat loss and considerable fuel
saving.
·
More
control
·
Less
pollution(since no scrap)
·
Less
time required
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