CONTINUOUS CASTING

THIRUNAVUKARASU.H

13MY12

PSG TECH KOVAI

• Continuous casting

– conceived in the 1860s

– major improvements in efficiency and productivity

and significant reductions in cost

– the molten metal in the ladle is cleaned and equalized

in temperature by blowing nitrogen gas through it for

5 to 10 min. The metal is then poured into a

refractory lined intermediate pouring vessel (tundish)

where impurities are skimmed off. The molten metal

travels through water cooled copper molds and

begins to solidify as it travels downward along a path

supported by rollers (pinch rolls)

advantages of continuous casting

• Sprue, runner, riser, etc. are not used. Hence, no waste

metal this leads to 100% casting yield.

• Process is automatic.

• Product has good consistent soundness.

• Mechanical Properties are high and very reproducible.

DISADVANTAGE

•Not suitable for small quantity production.

•Continuous and efficient cooling of moulds is

required, else, center-line shrinkage develops.

•Requires large floor space.