Introduction
In modern steelmaking, efficiency and purity determine competitiveness. As steel grades become higher and cleaner, foundries and steel plants are increasingly relying on Calcium Silicon (CaSi) Cored Wire to improve inclusion control, enhance castability, and reduce production costs.
This article explains why CaSi cored wire has become the preferred choice for secondary refining and continuous casting operations worldwide.
1. What Is CaSi Cored Wire?
CaSi cored wire consists of a steel sheath filled with calcium-silicon powder. During injection into molten steel, the sheath protects the core material from premature oxidation, allowing calcium and silicon to be released deep in the melt.
Key components:
• Calcium (Ca): Improves inclusion morphology, reduces alumina clogging, and enhances steel cleanliness.
• Silicon (Si): Assists deoxidation and promotes fluid slag formation.
2. Main Advantages in Steel Refining
• Inclusion modification: Converts solid alumina inclusions into harmless liquid calcium aluminates.
• Improved castability: Reduces nozzle clogging and enhances the stability of continuous casting.
• Cost reduction: Minimizes reblows and rework by stabilizing steel chemistry.
• Environmental benefits: Decreases waste and energy consumption compared to traditional lump addition.
3. Application Fields
CaSi cored wire is widely used in:
• Bearing steels
• Wire rod steels
• Automotive steels
• High-strength low-alloy (HSLA) steels
• Stainless and special steels
4. How to Choose the Right CaSi Wire
Selecting the right balance between Ca and Si ensures the best metallurgical results and cost efficiency.
Parameter Recommended Range
Ca content 28–30%
Si content 55–60%
Wire diameter 13–16 mm
Steel sheath thickness 0.4–0.6 mm
5. Why Choose Our Factory
Our company produces CaSi cored wire using vacuum-sealed filling systems to ensure consistent density and prevent moisture absorption.
We supply global steel producers in Europe, South America, and the Middle East, offering stable quality, fast delivery, and full technical support.
Conclusion
CaSi cored wire is not just an additive — it is a process optimizer.
By improving steel purity, lowering inclusion defects, and cutting costs, it enables steelmakers to achieve higher yields and better quality in every heat.
Technical Note:
All data and recommendations are based on industrial practices and field feedback from our long-term partners in Europe and South America. Wire composition and performance may vary depending on steel grade and ladle conditions.
