| 摘要 |
<p>1,218,365. Continuous casting; making steel strip. STEEL CO. OF WALES Ltd. 9 April, 1969 [23 April, 1968], No. 3594/68. Headings B3A and B3F. Because an electrode 20 at a potential of 80,000-200,000 volts is inserted in molten steel in a tundish 10, an electrostatically-charged stream from a rod-controlled nozzle 13 separates into a fine spray 22 of steel droplets which are attracted to the surface 24 of an earthed and water-cooled roll 16 to coalesce to form a thin steel layer 25 which is stripped off by means 27 as the roll rotates slowly. The strip 28 so cast passes between rollers 27a and forms a coil 29. It may be passed subsequently to a reduction mill. Gas (such as Ar or Kr) which does not react with or dissolve appreciably in the steel is retained in a chamber 15 around the nozzle 13 by elongated sealing conduits 18 through which N or Ar and N are passed adjacent the roll surface 24.</p> |
