B - Operations – Transporting – 23 – K
Patent
B - Operations, Transporting
23
K
13/13, 22/183
B23K 3/00 (2006.01) B22D 19/08 (2006.01)
Patent
CA 1165515
ABSTRACT Steels such as standard carbon or alloy types that have too much carbon, i.e. 0.15% or (notably) more, to be rimmed, are produced in improved form by pouring a base melt of such steel which includes manganese up to 1.75% and other alloying elements if desired, and is sufficiently deoxidized, as with Si or Al, to be partially killed but not fully killed. Such pouring in an ingot mold is initially up to 80 to 95% full, under circumstances such that a shell solidi- fies, and pouring is continued, while adding into the still-molten core sufficient aluminum at least to kill the core and also as desired, other alloying or useful elements. The solidified ingot ultimately yields hot rolled bar products which are essentially aluminum-killed steel but have a partially killed skin and have superior surface conditions lacking blow holes, and being very appropriate for bar stock.
369842
Bingel Carl J.
Demianczuk Dionisyj W.
Republic Steel Corporation
Ridout & Maybee Llp
LandOfFree
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