Method for introducing deoxy-desulphurizing substances into...

Details Method for introducing deoxy-desulphurizing substances into... Method for introducing deoxy-desulphurizing substances into...

C - Chemistry, Metallurgy

21

C

53/102, 39/107,

C21C 7/06 (2006.01) B22D 1/00 (2006.01) C21C 1/02 (2006.01) C21C 7/00 (2006.01) C21C 7/064 (2006.01)

Patent

CA 1147967

A B S T R A C T Method for introducing into metal baths substances which act as deoxy-desulphurizing agents and/or as agents controlling the shape and size of nonmetallic inclusions. The method is characterized by the use as a carrier of a cored coiled tube having turns of any section and size. The hollow carrier has walls ? 20 mm thick and an inside diameter of less than 100 mm. In ore embodiment the hollow carrier is introduced into the bath at a periodically variable rate within a range of 0 to 10 m/s, so as to be subjected to longitudinal vibration. The invention comprises also the cored spiral tube per se.

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