Deep Cultivation of Continuous Casting Core Processes & Advanced Equipment | Empowering High-Efficiency and High-Quality Iron and Steel Metallurgy with Premium Mold Series Products

In the whole process of modern iron and steel metallurgy, continuous casting serves as a core and pivotal procedure connecting steelmaking and steel rolling. It undertakes the vital mission of continuously solidifying high-temperature molten steel into qualified casting slabs. Its process stability and equipment accuracy directly determine the yield rate, surface quality and internal performance of steel products, acting as a core link for cost reduction, efficiency improvement and quality upgrading in steel production. As the iron and steel industry undergoes in-depth transformation toward intelligence, high efficiency and green development, the iterative upgrading of advanced continuous casting processes and core supporting equipment has become a key carrier of core competitiveness for steel enterprises. With years of in-depth dedication to the metallurgical supporting equipment sector, our company focuses on the core pain points and technical requirements of continuous casting procedures. Relying on a mature R&D and production system, we have developed a series of core products including mold copper tubes, mold copper plates and mold assemblies, which precisely meet the production needs of various slab, billet and round billet continuous casting machines, and provide solid support for the efficient, stable and safe continuous casting production of steel enterprises.

Focus on Core Procedures: Analysis of Key Production Process Systems for Continuous Casting

Continuous casting production is a continuous and sophisticated system process for molten steel solidification and forming. Its core principle is to realize the efficient and continuous conversion of liquid molten steel into solid casting slabs through ordered flow control, forced cooling, continuous straightening and precise cutting. Accurate control of full-process process parameters is the key to avoiding quality defects such as slab cracks, shrinkage cavities and steel leakage. The core production process consists of four key links.

First, molten steel transfer and stable pouring process. Refined qualified molten steel is transported to the continuous casting turret via a ladle, and steadily injected into the tundish through precise flow control of the ladle sliding nozzle. The tundish plays core roles in buffering, stabilizing pressure and purifying molten steel, which effectively balances the temperature and composition of molten steel, removes inclusions, avoids molten steel turbulence fluctuations affecting subsequent forming quality, lays a stable foundation for continuous pouring, and serves as a pre-core process to ensure the continuity of continuous casting production.

Second, primary cooling and forming process of the mold. As the most critical core link in continuous casting production, this procedure directly determines the forming quality of the primary shell. Stabilized molten steel is injected into the mold through a submerged nozzle. Relying on the efficient heat conduction structure on the inner wall of the mold and the circulating cooling water system, the molten steel is rapidly and forcibly cooled, enabling the surface layer of molten steel to quickly solidify into a uniform, dense and high-strength primary shell. Meanwhile, the high-frequency and small-amplitude vibration process of the mold effectively prevents adhesion between the shell and the mold wall, eliminates production failures such as steel pulling leakage and steel sticking, and ensures the continuous and stable operation of the slab pulling process. The uniformity and thickness consistency of the primary shell are directly determined by the heat conduction performance, wear resistance and structural accuracy of the core mold components.

Third, precise cooling control process in the secondary cooling zone. The casting slab with liquid core pulled out from the mold enters the secondary cooling zone. Adopting segmented dynamic water distribution cooling technology, the cooling water volume and intensity are accurately adjusted according to slab specifications, casting speed and steel grade characteristics, so as to realize the stable solidification of the casting slab from surface to core. This effectively avoids quality problems such as surface cracks, internal porosity and center segregation, ensures uniform and stable internal structure of the slab, and acts as a key process to improve the comprehensive performance of casting slabs.

Fourth, withdrawal and straightening & fixed-length cutting process. The cooled casting slab is stably pulled and straightened through the precise tension and straightening control of the withdrawal and straightening machine to avoid slab deformation and cracking. Finally, flame cutting equipment is used to cut the slab to a fixed length according to production requirements to produce qualified slabs, completing the entire continuous casting production process.

Anchor Core Equipment: Build a Solid Production Foundation with Premium Mold Products

The complete set of continuous casting machine equipment includes multiple modules such as molten steel conveying device, tundish, mold, vibration device, secondary cooling system, withdrawal and straightening equipment, and cutting equipment. Among them, the mold system is the core component of the continuous casting machine. The quality of its supporting copper tubes, copper plates and assemblies directly determines the maximum casting speed, production stability and slab finished product quality of the continuous casting machine, serving as the core breakthrough point for the iterative upgrading of continuous casting equipment. Specializing in the R&D and manufacturing of core mold components, our company creates a full range of high-performance mold supporting products with exquisite craftsmanship and strict quality control, fully adapting to the production needs of modern continuous casting.

Our mold copper tubes are exclusive core components for square billet and round billet continuous casting machines. Made of high-purity oxygen-free copper alloy and adopting precision forging and integral extrusion forming technology, the products feature ultra-high thermal conductivity, uniform structure and excellent high-temperature fatigue resistance. For high-speed continuous casting working conditions, the inner wall of the copper tube is strengthened by precision chromium plating and nickel alloy plating, which greatly improves surface wear resistance, high-temperature oxidation resistance and steel adhesion resistance, and effectively solves industry pain points such as uneven shell thickness, excessive copper tube wear and short service life during high-speed casting. With high dimensional accuracy and excellent inner wall smoothness, the products ensure uniform and stable heat conduction during molten steel solidification, help enterprises increase continuous casting speed, reduce steel leakage failure rate, greatly cut down equipment shutdown and maintenance frequency, and effectively improve production efficiency.

Our mold copper plates focus on the slab continuous casting machine scenario and are core key components for slab forming. Adopting high-end copper alloy ratio and optimized through refined heat treatment technology, the products achieve a multi-dimensional balance of thermal conductivity, structural strength and rigidity and toughness, and can adapt to extreme working conditions of high temperature, high pressure and high-frequency vibration for a long time. The flatness of the copper plate surface and the accuracy of water gaps are strictly controlled by precision processing, which ensures uniform and efficient circulation of mold cooling water, guarantees the uniform forming of the primary shell of slabs, and eliminates surface scratches, cracks, warpage and other quality defects of slabs from the source. Meanwhile, customized optimization of copper plate coating and structural parameters can be carried out according to the production needs of different steel grades (carbon steel, alloy steel, special steel) to adapt to the high-quality pouring of high-cleanliness steel and high-end special steel.

Our mold assemblies are integrated complete sets of core equipment. Integrating independently developed and produced mold copper tubes, copper plates, sealing components, cooling structures, positioning and installation structures and other core modules, they achieve high precision, high adaptability and high stability of the whole equipment after standardized and precision assembly and commissioning. Adopting a modular integrated design, the assemblies feature compact structure, convenient disassembly and assembly and excellent airtightness, which can effectively prevent cooling water leakage and molten steel channeling failures and adapt to all mainstream continuous casting machine models. Before delivery, strict pressure testing, precision verification and working condition simulation tests are conducted to ensure the whole assembly has balanced heat conduction, stable vibration and reliable operation. It can perfectly match high-speed and intelligent continuous casting production processes, greatly reduce enterprise equipment operation and maintenance costs, and improve the automation and high-efficiency operation level of the entire continuous casting production line.