The production process of continuously casting high-temperature molten steel into a slab with a certain cross-sectional shape and a certain size is called continuous casting steel. The equipment required to complete this process is called a continuous casting machine (CCM). The electromechanical-hydraulic integration of the steel casting equipment such as the body equipment, the cutting area equipment, the dummy rod collection and conveying equipment constitutes the core equipment of continuous steel casting, which is customarily called the continuous casting machine.
Main advantages of full arc continuous casting machine
1. Because it is arranged in a 1/4 arc range, its height is lower than that of vertical CCM and vertical bends CCM, the equipment is lighter in weight, the investment cost is lower, and the equipment is easy to install and maintain, so it is widely used.
2. Due to the low equipment height, the static pressure of the molten steel during the solidification process of the slab is relatively small, which can reduce the internal cracks and segregation caused by the deformation of the bulging, which is conducive to increasing the drawing speed and improving the quality of the slab.
R6 Multi-Strand Continuous Casting Machine
The R6 continuous casting(CC) machine uses integrated copper tube type billet crystallizer with high-frequency small-amplitude leaf spring vibration. The machine has a simplified slab guiding device with low cost and easy maintenance. Five-roll four-drive straightening machine has a large pulling force and the auxiliary straightening machine can perform secondary straightening of the slab in the accident state. The special flying shears can be quickly and accurately cut to length. The surface of the grinding rate is less than 5%.
Process parameters
Model: Full arc continuous square billet continuous casting machine
Number of strands: 1, 2, 3, 4, 5, 6
Casting machine radius: 6, 8, 10m
Billet specifications: 80*80, 90*90, 100*100, 120*120, 150*150, 180*180, 200*200, 240*240mm
Rectangular billet: (120 ~ 200) (240 ~ 600)mm
Working speed: 0.6~1.2 m/min
Annual output: 10 to 150,000 tons /strand
Spill rate: ≤0.1%
Continuous pouring time: ≥8h
R4-R5 continuous casting machine
The R4-R5 continuous casting machine is a single unit single strand CCM machine and has a production capacity of 5-12 tons per hour. It is suitable for electric furnaces of more than 1 ton, multi-furnace continuous casting and intermittent small batch casting. The user who has a lower factory building and no crane can install the machine underground, which is convenient for manual bag pouring and electric furnace pouring.
TINVO manufactures continuous casting machines with high efficient casting speed, multi-point straightening and protects casting, best price and high quality guaranteed.
The continuous casting machine simplifies the production process, improving the production efficiency and metal yield, saving energy consumption and greatly reducing the production cost. Whether it is long-flow steelmaking or short-flow steelmaking, the continuous casting machine (CCM) is necessary. According to the structure and appearance, the continuous casting machine can be classified into a vertical continuous casting machine, vertical curved one, arc one with a linear segment and a horizontal one. The machine consists of a molten steel carrying device, a tundish and its replacement device, a crystallizer and its vibration device, a drawing straightener, a cutting device and an ingot device. The continuous casting machine provided by TINVO with solid and modularly design, meeting the requirements for steel quality and subsequent rolling processing through continuous innovation research. With rich technical experience.
Φ80-150 Round Billet Continuous Casting Machine
The continuous casting (CC) round billet refers to a machine that mainly produces tube blanks for seamless steel pipes and it adopts continuous cast steel iron-making technology. It is mainly composed of the ladle, tundish, mold (primary cooling), mold oscillating unit, secondary cooling and casting billet guide device, withdrawal and straightening unit, cutting unit, billet discharge unit (conveying roller), etc. The completely solidified straight billet will be cut into the required size by cutting equipment and transported to the subsequent process by conveying roller. The equipment used for continuous casting steel production is actually the complete set of mechanical equipment in the continuous casting production line.
The production process of continuously casting high-temperature molten steel into a slab with a certain cross-sectional shape and a certain size is called continuous casting steel. The equipment required to complete this process is called a continuous casting machine (CCM). The electromechanical-hydraulic integration of the steel casting equipment such as the body equipment, the cutting area equipment, the dummy rod collection and conveying equipment constitutes the core equipment of continuous steel casting.
R8-R12 Rectangular Billet Continuous Casting Machine
The R8-R12 rectangular billet continuous casting machine(CCM) belongs to the full arc continuous casting machine, which is divided according to the size and the shape of the cast section. Qualified molten steel from steel refining furnace will be poured into steel ladle, then it will be delivered to the position above the CCM after external refining processing, and molten steel will be poured into the tundish from ladle bottom outlet. Tundish nozzle shall be adjusted to match with the lower mould in advance. After opening the tundish stopper or sliding nozzle (or sizing nozzle), molten steel will flow into forced water-cooled copper mould. The molten steel inside the mould will be quickly cooled into crystals. Withdrawal and straightening machine will pull out the dummy bar (with dummy bar) from the mould at a certain speed. After pulling out from the mould, the casting billet shall be cooled by spraying water, and this is called secondary cooling. The secondary cooling device of crystallizer and the drawing straightening equipment of the full-arc continuous casting machine are arranged on a circle of 1/4 arc. The slab is arc-shaped in the crystallizer. The casting billet is continuously pulled out of the continuous casting machine to be cut to a fixed length and output from the horizontal direction. Meanwhile, the molten steel is continuously poured into the mould. The height of the continuous casting machine is basically equal to the arc radius. The outer arc radius of the continuous caster is usually called the arc radius of the arc continuous caster.
TINVO is your trustworthy manufacturer for CCM machine with the best prices and superior quality. It offers comprehensive continuous casting solutions conforming to standardization, high economic benefits and high-tech high-speed drawing, the most affordable price guaranteed.
The shorter the stress line in the mill stand, the smaller the amount of elastic deformation is generated, the greater the rigidity of the hot rolling machinery and the higher the precision of the rolled product. It is a new type of houseless short-stress rolling mill, suitable for small and medium-sized rolling mill renovation, and also for small continuous rolling and semi-continuous rolling plants. For example, in a small semi-continuous rolling mill with an annual output of 150,000 to 200,000 tons, 1202 and 1502 continuous casting billets are used, the rough rolling mill is with the roll diameter is Ф500mm×2, and the rolled parts after cutting head by flying shear enter the diameter Ф350×4 and the diameter Ф300×4 continuous rolling mills.
What's the shot-stress rolling mill mean?
The rolling force received by the rolling mill forms a closed-loop (i.e. the stress line) through the internal stress of each stressed component such as the roll, roll bearing, box, copper nut, and tie rod. The rolling mill base and the down rolling mechanism are not subject to rolling force, and the stress line is shorter than that of an ordinary rolling mill, which improves the strength of the rolling mill and reduces the elastic deformation of the rolling mill, so it is called a "short stress line rolling mill".
Comparison of short stress line rolling mills and housing rolling
1. Short stress loop and high rigidity ensure high precision of the product and easy realization of negative deviation value.
2. There are forward and reverse threads in the two ends of the column, which can realize the alignment adjustment; the rolling centerline is unchanged, which can improve the operation rate, save the time for maintenance and replacement of the guide beam, reduce the operating accidents, and avoid rolling elbows, impacts and entanglements and other process accidents to extend guide lifespan.
3.Easy axial adjustment and small axial clearance.
4. Balance spring is used, the balancing force is constant, and the spring is compact in the bearing seat.
5. The roll system of the intermediate mill is pre-installed and adjusted before changing the rolls. After the stop of the new roll system, the rolling mill has a good pre-adjustment performance, fast roll change and high yield.
6. The bearing seat is automatically adjusted, and the four-row cylindrical bearing is balanced to increase the bearings life.
A hot rolling mill is a machine referring to the pressure shaping of the metals. It is basically an automatic system or cluster of machines to perform both rolling and auxiliary operations including transportation of billets to heating furnaces and mill rolls, rolled material, metal after rolling, and many other functions. The mill rolls out by subjecting the slabs to extremely high temperatures in a heating furnace and high pressures through a successive arrangement of rolls. The types of a hot rolling mill include Φ200-650 hot rolling machine, short-stress rolling mill, etc. Hot rolling mill provides high-accuracy control of thickness, width, shape, and process technology for the water cooling to create ductility and strength, widely used in various applications such as for automobiles, rail cars, and home appliances.
Hot Rolling Mill Line
TINVO provides the hot rolling mill line to finish the whole hot rolling process. The main equipment includes Reheating Furnace, High-Pressure Water Descaling, Mill Stands, Flying Shear, Cold Shear, Cooling Bed, Packing and Collection Machine, Electric, Air, Lubrication System, etc. The hot strip machines are the most commonly used. The process is that Scrap steel ----melting---- casting----mold unloading----sorting-----deliver to reheating furnace----heating to 1150~1200°C---- come out furnace---- rolling---- finished product ----packing.
Hot rolling refers to rolling performed above the metal recrystallization temperature. When the annealing temperature is high enough and the time is long enough. new strains (recrystallized cores) without stress change are generated in the fiber structure of the deformed metal or alloy, and the new grains continue to grow until the original deformed structure completely disappears, the properties of metals or alloys also change significantly. This process is called recrystallization. The temperature at which new grains begin to form is called the recrystallization temperature. The temperature at which the microstructure is completely occupied by the new grains is called the end recrystallization temperature. Generally, the recrystallization temperature is mainly affected by the alloy composition, the degree of deformation, the original grain size, and the annealing temperature.
Features:
1. Low energy consumption, good plastic working, low deformation resistance, insignificant work hardening, easy rolling, and reduced energy consumption required for metal deformation.
2. Hot rolling mill usually uses large ingots/billet and large degrees of down rolling. The production speed is fast and the yield is high, which creates conditions for large-scale production.
3. The cast structure is transformed into the processed structure by hot rolling, and the plasticity of the material is greatly improved through the transformation of the structure.
4. The characteristics of the rolling method determine that there is anisotropy in the properties of the rolled parts. Firstly, there are obvious performance differences in the longitudinal, horizontal and high directions of the material. Secondly, there is an obvious directionality in the performance.
TINVO offers design, manufacture and onsite service of the whole bar or rebar hot rolling mill line with computer control for advanced international standards.