acier coiffé
- Domaine
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- métallurgie acier
- Date
Terme :
- acier coiffé n. m.
Traductions
-
anglais
Date :Définition
Semikilled steel cast in a bottle-top mold and covered with a cap fitting into the neck of the mold. The cap causes the top metal to solidify. Pressure is built up in the sealed-in molten metal and results in a surface condition much like that of rimmed steel. Sufficient deoxidizer was added, either in the ladle or the molds, to control action in the molds. In capped steels, the period of gas evolution in the molds was further controlled by using a steel cap which chilled and solidified the top of the ingot.
Terme :
- capped steel