Calcium-silicon cored wire is a composite wire made from calcium-silicon alloy powder and an outer metal sheath (usually low-carbon steel strip) through a special process. It is widely used in industrial fields such as steelmaking. It is primarily used in key stages of steelmaking, such as deoxidation, desulfurization, and alloying, effectively improving the quality of molten steel and optimizing production processes. As an indispensable auxiliary material in steel production, the performance and quality of calcium-silicon cored wire directly affect the quality of steel products.
Specifications of Calcium-Silicon Cored Wire
|
Category |
Parameters |
Standard Value |
|
Core Composition |
Calcium (Ca) Content |
28-35% |
|
Silicon (Si) Content |
55-65% |
|
|
Aluminum (Al) Content |
≤1.0% |
|
|
Iron (Fe) Content |
≤15% |
|
|
Physical Dimensions |
Diameter |
8mm/10mm/13mm |
|
Tolerance of Diameter |
±0.2mm |
|
|
Steel Strip Thickness |
0.3-0.5mm |
|
|
Powder Filling Rate |
≥90% |
Applications of Calcium-Silicon Cored Wire
High-end steel smelting: Used in bearing steel, spring steel, etc., for deep deoxidation and desulfurization, improving steel toughness and wear resistance, meeting the needs of precision mechanical components.
Clean steel production: For wind power steel and bridge steel, controlling sulfur content below 0.010%, preventing stress corrosion and ensuring the safety of engineering structures.
Continuous casting process optimization: Inhibiting nozzle clogging, increasing continuous casting speed, reducing casting billet defect rate, and improving production efficiency.
Stainless steel manufacturing: Low-aluminum calcium-silicon wire improves molten steel fluidity, enhances the surface finish of stainless steel, and is suitable for food-grade and decorative products.
Special alloy processing: Precisely controlling composition, optimizing the grain structure of high-temperature alloys and precision alloys, and enhancing stability in high-temperature environments.
Casting production: Assisting in the spheroidization of ductile iron, reducing pores and inclusions in cast steel parts, improving casting density, and reducing the scrap rate.
Features of Calcium-Silicon Cored Wire
Precise and controllable composition: The use of cold-rolled steel strip to uniformly coat the calcium-silicon alloy powder ensures consistent composition in every section of the wire, with minimal composition fluctuations in any 1-meter sample. This achieves precise delivery of alloying elements into the molten steel, solving the problem of segregation in traditional block alloys.
Higher metallurgical efficiency: By feeding the wire into the deep part of the molten steel using a wire feeding machine, the alloy powder fully reacts with the molten steel, resulting in a higher element recovery rate, more than 30% higher than traditional block alloys, significantly reducing raw material consumption and production costs. Thorough molten steel purification: It possesses both deoxidation and desulfurization functions, reducing oxygen content in steel to below 15 ppm and achieving a desulfurization efficiency of 40%-60%, effectively removing brittle inclusions in the steel and significantly improving the purity of the molten steel.
Safe and convenient to use: The wire structure is regular, compatible with various wire feeding equipment, and easy to operate and control. It avoids dust pollution and splashing risks associated with traditional alloy addition processes, improving the workshop working environment.
