What Is Continuous Casting Machine?

Continuous steel casting refers to the production process of continuously pouring high-temperature molten steel onto cast slabs with a certain cross-sectional shape and size specifications. To complete this process, the equipment required is called a complete set of continuous casting equipment. Mechatronics casting equipment, continuous casting fuselage equipment, cutting area equipment, and ingot bar receiving equipment, etc. constitute the continuous casting steel core equipment, which is often referred to as a continuous casting machine.

The continuous casting process of the continuous casting machine. When high-temperature molten steel is continuously poured into one or a group of cold copper molds, the molten steel gradually solidifies into a blank shell around the mold. When the steel liquid level rises to a certain height and the blank shell solidifies to a certain thickness, pull out the orthopedic machine and pull it out. The billet shell is cooled by spraying water in the secondary cooling zone to completely solidify the billet shell. Then, according to the needs of steel rolling, the cutting equipment cuts the billet into size. This process of pouring high-temperature molten steel directly onto the billet is called continuous casting.

Continuous casting machine can be divided into many different types. According to its structure and shape, the continuous casting machine can be divided into vertical curve, arc straight section, arc section, multi-radius ellipse, horizontal continuous casting machine and other types. With the development of continuous casting technology, wheeled continuous casting machine, especially thin slab continuous casting machines have been developed again.

If distinguished by the size and shape of its casting section, the continuous casting machine can be divided into slab continuous casting machine, billet continuous casting machine, bloom continuous casting machine, round billet continuous casting machine, special-shaped section continuous casting machine, and slab caster. The rectangular billet continuous casting machine also includes the rectangular billet on the rectangular billet continuous casting machine. The cast slab whose casting cross-section or equivalent sectional area is greater than 200×200mm is called bloom, and the cast slab with the cross-section or equivalent sectional area less than 160×160mm is called a small billet. Square billets, rectangular billets with a width ratio greater than 3 are called slabs.

According to how many slabs can be poured by the continuous casting machine in the same ladle, it can be divided into three types: single-strand, double-strand, and multi-strand.

 

The emergence of the continuous casting machine has fundamentally changed the one-time rolling and serving method of steel ingots for a century. The use of a continuous casting machine has the advantages of simplifying production procedures, improving production efficiency and metal yield, saving energy, greatly reducing production costs, and ensuring the quality of billets. It has developed rapidly at home and abroad. In today's steelmaking enterprises, it is almost inevitable to equip continuous casters, no matter if it is a long process or a short process.

If you are interested in purchasing the continuous casting machine, please mail at marketing2@hanrm.com.

More Articles You May Be Interested in:

1. Continuous Casting Machine

2. What is Continuous Casting and Continuous Rolling?

3. Continuous Rolling, Semi-continuous and Slit Rolling Processes of Rolling Mills

4. What is the difference between horizontal continuous casting and arc continuous casting?

5. Why Develop Horizontal Continuous Casting Technology?

6. What’s the Main Equipment of the Horizontal Continuous Casting Mill?

7. Continuous Casting Machine Equipment

What Is Continuous Casting Machine?

Continuous casting is the process of continuously casting high-temperature molten steel into billets with certain section shape and size.

The equipment needed to complete this process is called continuous casting complete equipment. The mechanical and electrical hydraulic integration of steel casting equipment, caster body equipment, cutting area equipment, dummy bar collection and conveying equipment constitutes the core equipment of continuous casting steel, which is commonly called continuous caster.

The high-temperature molten steel is continuously poured into one or a group of water-cooled copper crystallizers, and the molten steel gradually solidifies into the shell along the periphery of the crystallizer. When the liquid level of the steel rises to a certain height and the shell solidifies to a certain thickness, the tension leveler will pull out the billet, and the billet will be completely solidified by spray cooling in the secondary cooling area. The cutting device will cut the billet to a certain length according to the rolling requirements. The process of making high-temperature molten steel directly cast into billet is called continuous casting.

Its appearance has fundamentally changed the ingot rolling process, which has been dominant for a century. Because it simplifies the production process, improves the production efficiency and metal yield, and saves energy consumption, the production cost is greatly reduced, and the billet quality is good. At present, in steel-making enterprises, whether it is long process steel-making or short process steel-making, the configuration of continuous casting machine is almost inevitable.

Classification of the continuous casting machine

Continuous casters can be classified in many forms. According to the structure and shape, the caster can be divided into vertical caster, vertical bending caster, arc caster with straight section, arc caster, multi radius elliptical caster and horizontal caster. With the development of continuous casting technology, the research of wheel caster, especially thin slab caster, has been carried out.

According to the size and shape of the section cast by the caster, the caster can be divided into slab caster, billet caster, bloom caster, round billet caster, special section caster and thin slab caster. The rectangular billet caster is also included in the square billet caster. Generally, the billets with casting section or equivalent sectional area greater than 200 × 200 mm are called bloom, the billets with section or equivalent sectional area less than 160 × 160 mm are called billet, and the rectangular billets with width thickness ratio greater than 3 are called slab.

If the continuous casting machine can be divided into single flow, double flow or multi flow continuous casting machines according to the number of billet flow that can be cast under the same ladle.

Composition of continuous caster

Generally, the continuous caster is composed of liquid steel carrier (ladle, rotary table), tundish and its replacement device, mould and its vibration device, secondary cooling area clamping roller and cooling water system, pulling straightener, cutting equipment, dummy bar device, etc.

The tundish plays the role of buffering and purifying the molten steel. The capacity of tundish is generally 20% - 40% of the capacity of ladle. The more the flow number of caster is, the larger its capacity is. The mold is the "heart" of the continuous casting machine, which requires good thermal conductivity, structural rigidity, wear resistance and easy to manufacture and maintain. It is generally made of forged copper or cast brass, and its outer wall is forced to cool evenly by water.

The function of the mould vibration device is to make the mould vibrate periodically, so as to prevent the bonding between the primary shell and the mould wall from being broken. The vibration curve generally changes according to the sinusoidal law to reduce the impact. Its amplitude and frequency should be closely matched with the pulling speed to ensure the quality and output of the slab.

The secondary cooling device is installed at the outlet of the mould, which can accelerate the solidification of the slab and control the temperature of the slab by means of water spray or atomization cooling. The pinch roll and guide roll support the high-temperature billet with liquid core to prevent bulging deformation or internal crack. At the same time, the liquid core reduction technology can be carried out in this section to improve the quality and output of the billet. The water pressure and water volume of the secondary cooling device are required to be adjustable to meet the needs of different steel grades and different pulling speeds.

The function of the straightening machine is to provide the power of drawing billet and straighten the bent billet, and to push the cutting device to move. The speed of drawing billet has a great influence on the output and quality of the continuous casting. The function of the dummy device is to plug the lower mouth of the mould with the dummy head before the start of continuous casting, pull the billet out of the caster after the solidification of the molten steel, then disconnect the dummy head, and put the dummy bar into the storage device.

The billet cutting equipment can cut the continuously moving billet into a fixed length. The commonly used cutting equipment is flame cutter or hydraulic shear and swing shear.

More Articles You May Be Interested In:

1. Technological Features of Continuous Billet Caster

2. What is Continuous Casting and Continuous Rolling?

3. Continuous Rolling, Semi-continuous and Slit Rolling Processes of Rolling Mills

4. What is the difference between horizontal continuous casting and arc continuous casting?

5. How Does Horizontal Continuous Caster Realize Billet Drawing?

6. Why Develop Horizontal Continuous Casting Technology?

7. What’s the Main Equipment of the Horizontal Continuous Casting Mill?

8. Continuous Casting Machine Equipment