Abstract
The solidification rate of steel cast in a mold provided with indirect chill is changed with the thickness of intervening sand layer existing on the chill. The calcalation of the effects of the indirect chill on the solidification rate of cast steel was made on a semi-infinite plane casting and a cylindrical casting of 100 mm in diameter. As a result of the calculation it was concluded that the rate of solidification was hardly affected by the thickness of the chill if the intervening sand layer was larger than 10mm. This was well proved to coincide with the result obtained experimentally.
