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Vacuum casting of steel

Authors
Journal
Vacuum
0042-207X
Publisher
Elsevier
Publication Date
Volume
10
Issue
6
Identifiers
DOI: 10.1016/0042-207x(60)90088-9

Abstract

Abstract The open hearth steel plant at Seraing is equipped with a Leybold installation for vacuum casting of steel. Vacuum casting is carried out in two different ways: —for heavy forging ingots: the degassing takes place directly when pouring steel into the ingot mould; —for small forging ingots: the degassing is obtained when transferring steel from the tapping ladle to another ladle; then steel is air-cast. The hydrogen content of the liquid degassed steel is of the order of 2 to 3 cm 3/100g. The cracks initiated by the oxidized inclusions completely disappear thanks to the vacuum casting technique. Elongation and reduction in area are improved; as well, the impact values recorded from transverse radial test specimens. This technique is therefore particularly beneficial to heavy stressed forgings.

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