B - Operations – Transporting – 22 – D
Patent
B - Operations, Transporting
22
D
22/167
B22D 11/18 (2006.01) B22D 2/00 (2006.01) B22D 11/16 (2006.01)
Patent
CA 1290133
23843-180 ABSTRACT In steady state operation of a continuous casting instal- lation molten metal 2 flows from an intermediate vessel 1 through a discharge valve 3 into a mould 5 and the melt level in the mould 5 is maintained substantially at a level 9 within desired limits 9a and 9b whilst the casting 11 is withdrawn from the mould by a withdrawing unit 10. Operation of the installation is started by opening the discharge valve to a throttled position, measuring the time t1, t2, t3 taken for the rising melt level to reach one or more measuring points m1, m2, m3 in the mould, each of which is associated with a respective reference time t1', t2', t3', and comparing each measured time with a plurality of time ranges associated with the respective reference time. Each time range is associated with a respective position of the discharge valve. The discharge valve is then moved to the position associated with that time range in which the measured time falls. The actual melt level/time relationship is thus brought into coincidence with or closer to the desired relationship.
531945
Fetherstonhaugh & Co.
Stopinc Aktiengesellschaft
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