VERFAHREN, UM FESTZUSTELLEN, OB SICH EINE STAHLMASSE ZUM VERGIESSEN EIGNET, UND VORRICHTUNG DAFUER

摘要

Herein disclosed is a method and an apparatus for judging the fitness of a steel composition for a particular casting practice in order to prevent excessive segregation of manganese and phosphorous in the course of the casting. We have discovered that the simultaneous segregation of manganese and phosphorous tends to cause the formation of bainite and/or martensite in steel plate product during the cooling of the steel plate after rolling. When the manganese and phosphorous concentrations satisfy the following requirement (1):