The upward continuous casting method used by the upward continuous caster refers to a casting process where the molten metal is drawn from top to bottom into a crystallizer integrated with the mechanical pump equipment, where it solidifies, crystallizes, and takes shape into a billet. The upward continuous caster consists of a crystallizer fixed at the top of a heat-insulating furnace and immovably positioned within a cooling tower, allowing the molten metal to infiltrate to a certain depth below it. Additionally, it includes the upward pulling mechanism for the ingot billet and the dominant structure that bends the billet's side.
During the continuous casting process, the molten metal enters the crystallizer under negative pressure. The crystallization front of the melt is slightly higher than the level of the metal melt in the heat preservation furnace, due to the crystallizer being installed in a cooling tower that is interconnected with the same mechanical pump equipment.
This method can produce casting billets with various cross-sectional shapes of metal materials, such as aluminum profiles, amorphous strip materials, billets, and pipe blanks, particularly suitable for producing blanks required for longer high-conductivity oxygen-free copper conductors and wide-screen coaxial cable materials. The product features excellent quality, high manufacturing efficiency, and low cost, and can replace the traditional molten casting and cold rolling automatic production line billet form.
Due to the fact that induction furnaces typically employ a weak reducing atmosphere for smelting, high-quality cathode copper should be used as the raw material. Both the molten pool in the induction and holding furnaces can utilize dry wood charcoal or flake graphite as a shield to block gases and maintain the melt.
The molten copper temperature in the forging furnace and heat preservation furnace of the continuous casting machine should be basically consistent, controlling a stable temperature is highly beneficial for the stable forging process of oxygen-free copper rods in the continuous rolling process. The structure and cooling expertise of the crystallizer and system are related to the rolling speed. The greater the cooling capacity of the system, the lower the diameter of the continuous copper rod cable, the faster the rolling speed, the larger the linear organization, the more stable the operation, and the more conducive to improving the drawing speed.
