Cored wire, as an innovative composite material, has developed into a critical tool for secondary refining since the 1980s, building on the foundation of injection metallurgy technology. It involves encapsulating various additives (such as deoxidizers, desulfurizers, modifiers, and alloys) that have been crushed to a certain particle size within cold-rolled low-carbon steel strips, forming a continuous length of material. This type of material plays a significant role in improving molten steel quality, enhancing castability, and optimizing the performance of steel products.
Classification of Cored Wire
Based on its internal composition, cored wire can be categorized into several types:
Silicon-Calcium Cored Wire: Adjusts the ratio of silicon and calcium in steel, aiding in modifying inclusion morphology.
Titanium-Iron Cored Wire: Primarily used for adding titanium elements to enhance the strength and other physical properties of steel.
Boron-Iron Cored Wire: Provides boron elements for strengthening steel or as alloying components.
Rare Earth Series Cored Wire: Such as rare earth silicon, rare earth silicon-magnesium, rare earth silicon-barium, etc., used to improve the purity and casting properties of molten steel.
Silicon-Manganese-Calcium Cored Wire: Combines the advantages of silicon, manganese, and calcium, achieving both deoxidation and alloying effects simultaneously.
Aluminum-Calcium Cored Wire: Suitable for applications requiring aluminum and calcium additions, enhancing steel's heat resistance and corrosion resistance.
Pure Calcium Cored Wire: Specifically designed for particular steel grades, providing high-purity calcium elements.
Carbon Cored Wire: Designed for carbon addition purposes, meeting the needs of specific special steel types.
Additionally, there are other specialized cored wires, such as rare earth magnesium silicon-calcium alloy cored wire for desulfurization, and various premium alloy cored wires, each tailored to meet different smelting requirements.
Features and Advantages of Cored Wire
1. Precise Component Control: Helps precisely adjust and control the content of easily oxidized elements and trace elements, significantly increasing alloy yield, reducing alloy consumption, and lowering production costs.
2. Significant Improvement in Molten Steel Quality: By altering the nature and morphology of inclusions, it enhances the purity of molten steel, improves casting conditions, and thereby enhances the mechanical properties of the final product.
3. Simplified Operation Process: The feeding equipment is structurally simple and reliable, occupying less space. Especially the internal-draw design is suitable for use in confined spaces, reducing site requirements.
4. Wide Application: Not limited to ordinary steel smelting, it also finds extensive use in the production of special steels, serving as nitrogen enhancers, deoxidizers, and refractory material additives.
5. Efficient Processing: Quickly and evenly introduces required elements into molten metal, shortening smelting time and improving production efficiency.
6. Environmentally Friendly: Due to its efficient addition method, it reduces unnecessary chemical reactions, lowers energy consumption, and minimizes pollutant emissions.
https://www.youtube.com/watch?v=DZz5VEEXvWQ
Production Process of Cored Wire
In actual production and transportation processes, strict packaging procedures are necessary to ensure the quality and safety of cored wire. Typically, this includes:
1. Steel Strip Rolling: Place the tested steel strip on a rewinding machine for appropriate rolling to ensure it meets subsequent processing requirements.
2. Alloy Powder Screening: Place an 8-mesh sieve at the hopper outlet, pour the tested alloy into the hopper, and screen out particles that do not meet the required size.
3. Core Wrapping: Place the rolled steel strip on the winding machine, ensuring that the core material like silicon-calcium alloy is tightly wrapped, with a diameter maintained around 13 mm and a smooth surface.
4. Quality Monitoring: Adjust the feeding speed according to the winding process speed to ensure uniform distribution of the core material, avoiding broken lines or false edges.
5. Arrangement and Fixation: Arrange the wound core wire in sequence, minimizing tapping sounds and reducing surface dents on the core wire.
6. Packaging and Storage: After winding, tightly wrap the core wire with packaging tape and carefully lower it to the designated location using a crane. Weld securely before storing in inventory.
LSFerroalloy- Cored Wire Supplier
In summary, LSFerroalloy cored wire plays an indispensable role in modern metallurgical industries due to its efficient alloy addition efficiency, excellent component regulation ability, and significant improvement in molten steel quality. With technological advancements, the application scope and technical level of cored wire are expected to expand and improve further. From traditional steel to special alloys and new material research and development, cored wire will continue to leverage its unique value, driving the continuous progress and development of the metallurgical industry.