Abstract
The authors obtained the following relationships by statistical investigation in the data of ingot making practice:-
(1) Reciprocal relation of various ingot casting conditions.
(2) Characteristics of various kinds of steel in the ingot casting.
(3) Characteristics of various kinds of furnace steel in the ingot casting.
(4) Empirical formula of reciprocal relation between casting temperature, casting velocity and tundish nozzle diameter worked out by statistical calculation.
(5) Relation between various ingot casting conditions and ingot skin.
(6) Relation between various defects rising on ingot (sand crack, goast and forging crack etc.) and conditions of ingot casting practice.
And so the best and reasonable conditions for good ingot making were obtained.
