Wlith even t~e best i~got-casl cold-heading sleel and despite scarfing, struclural boll rejecl rate on final inspection usually runs c ose 10 10 Yo. Technlques reporled here nearly halve rejects.A system which permits the casting of aluminum ki/led stee/s through billet casting machines has been developed. Essentially, the system comprises an inert gas purged nozzle in conjunction with tundish shrouds and mold powders. Development work on a pilot plant scale, and in trial heats using both two strand and six s…
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