Continuous casting method of copper or copper alloy

Abstract

Abstract PURPOSE:To cast copper or a copper alloy having uniform and fine crystal structure continuously with high efficiency by disposing an electromagnetic coil provided with ejecting holes for cooling water between the primary shower and secondary shower of a casting mold, and stirring unsolidified molten metal electromagnetically. CONSTITUTION:The molten copper or copper alloy 41 charged into a casting mold 46 is cooled with a primary shower 54 disposed right under the mold 46, and the width of a sump 60 is controlled adequately. In succession, a cast ingot 43 is advanced into the area of the casting through-hole 56 of an electromagnetic coil 58, and rotating magnetic fields are generated in the ingot 43 to stir the sump 60. The stirred sump 60 is cooled by the cooling water which is run in the outside circumferential part of the coil 58 and is ejected through cooling water ejecting holes 58 formed at the center of the hole 56. Thus, the growth of columnar crystals is suppressed and the growth of granular crystals is accelerated. Thereafter, the ingot 43 is moved downward, and is cooled by a secondary shower 50, whereby the ingot is solidified thoroughly.

Inventors

• 👤 Yasuo Oofukune
• 👤 大福根　康夫

Bibliographic Details