Composition of Continuous Casting Machine

March 28, 2021

Composition of Continuous Casting Machine

The general continuous casting machine consists of molten steel carrier device (ladle, turntable), tundish and its replacement device, mold, and its vibration device, clamping roller and cooling water system in the second cold zone, drawing straightening machine, cutting equipment, Starter device and other components (pictured below).

The tundish plays the role of buffering and purifying molten steel, and its capacity is generally 20% to 40% of the capacity of the ladle. The more the number of casters, the greater it's capacity. The mold is the "heart" of the continuous casting machine. It requires good thermal conductivity, structural rigidity, wears resistance, and easy manufacturing and maintenance. It is generally made of forged copper or cast brass, and its outer wall is forced to cool evenly with water. . The role of the mold vibrating device is to make the mold periodically vibrate to prevent the primary shell and the mold wall from being bonded and broken. The vibration curve generally changes according to the sine law to reduce the impact. Its amplitude and frequency should be consistent with the tension. Fast and close cooperation to ensure the quality and output of the cast slab. The secondary cooling device is installed next to the exit of the crystallizer, and its function is to accelerate the solidification of the cast slab and control the temperature of the cast slab by means of water spray or atomized cooling. The nip rollers and guide rollers support the high-temperature cast billet with a liquid core to prevent bulge deformation or internal cracking. At the same time, liquid core reduction technology can be used in this section to improve the quality and output of the cast billet. Water in the secondary cooling device is required. The pressure and water volume are adjustable to meet the needs of different steel grades and different drawing speeds. The function of the stretch straightening machine is to provide the power to draw the billet and to straighten the bent cast billet, and push the cutting device to move. The billet speed has a great influence on the output and quality of the continuous casting. The function of the starter device is to continuously Before the casting starts, block the lower mouth of the mold with the pilot ingot head, and after the molten steel is solidified, pull the casting billet out of the casting machine, then disengage the pilot ingot head, and put the pilot ingot rod into the storage device. The slab cutting equipment cuts the slab in a continuous motion to a fixed length. Commonly used cutting equipment includes flame cutters or hydraulic shears and sewing shears.