New process for effecting the continuous rotary casting of hollow steel blanks

摘要

1,056,162. Continuous casting-machines. SOC. CIVILE D'ETUDES DE CENTRIFUGATION. March 31, 1964 [March 27, 1963], No. 13148/64. Heading B3F. In a process for the continuous rotary casting of a hollow blank formed between a rotating mould 2 and a central mandrel 1, the heat exchange between the blank which is forming and the mandrel is reduced in order that the internal wall of the blank cools more slowly and has a greater thickness and a substantially homogeneous temperature. The hollow, water-cooled copper mandrel I comprises three truncated cones 1a, 16, the tapers of which decrease in the direction of the mould outlet. After the first contact of the melt with the first section 1a, a skin is formed which then shrinks away from the mandrel to allow the formation of a gas pocket 3 to reduce heat exchange until the skin comes into contact with the second section 16 when the same effect occurs until the skin comes into contact with the third section 1c The mandrel may rotate eccentrically to the mould.