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