Method and apparatus for changing the secondary cooling during continuous casting of steel

  • US 4,031,946 A
  • Filed: 02/20/1975
  • Issued: 06/28/1977
  • Est. Priority Date: 02/28/1974
  • Status: Expired due to Term
First Claim
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1. A method of cooling a steel strand of substantially rectangular cross-section in the secondary cooling zone of a continuous casting machine, wherein spray nozzles having operating positions are arranged in a group of essentially parallel rows, each row comprising at least two spray nozzles, said rows extending transversely with respect to the direction of travel of the strand, the spray nozzles emitting cooling agent to form substantially adjoining cooling agent patterns on the strand surface, the improvement comprising the steps of:

  • synchronously groupwise altering the distance of said nozzles from said strand surface and at the same time groupwise altering the distance between said nozzles of a row in dependency upon a change in the strand format, the distance of the nozzles of a row from the strand surface and between each other being altered such that the operating positions of each nozzle lie along a substantially straight line which intersects with the strand surface, whereby the cooling agent patterns on the strand surface remain in a substantially adjoining position with respect to each other.

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