Classification by Core Composition
Standard CaSi Cored Wire
Core Composition: 30–35% Ca, 55–60% Si, ≤1.5% Al
Primary Functions:
Desulfurization & deoxidation in carbon steels and low-alloy steels.
Inclusion modification (converting Al₂O₃ into spherical calcium aluminates).
Applications: General steel refining, ladle furnace (LF) treatment.
Low-Aluminum CaSi Cored Wire
Core Composition: 28–32% Ca, 58–62% Si, ≤0.5% Al
Key Advantages:
Reduces aluminum pickup in ultra-low-carbon (ULC) and interstitial-free (IF) steels.
Minimizes nozzle clogging in continuous casting.
Applications: Automotive-grade steels, electrical steels.
Calcium-Silicon-Barium (CaSiBa) Cored Wire
Core Composition: 20–25% Ca, 50–55% Si, 10–15% Ba
Unique Benefits:
Enhanced sulfide control (Ba improves sulfur fixation).
Better nodularization in cast iron production.
Applications: High-sulfur steels, ductile iron treatment.
High-Calcium CaSi Cored Wire
Core Composition: 35–40% Ca, 50–55% Si
Purpose:
Maximizes calcium yield for deep desulfurization.
Used when strict inclusion control is required (e.g., bearing steels).
Drawback: Higher cost due to increased Ca content.
Classification by Wire Diameter
Thin-Diameter Cored Wire (9–11 mm)
Advantages:
Faster dissolution, suitable for small ladles or quick treatments.
Lower feeding speed requirements.
Applications: Mini mills, specialty alloy production.
Standard-Diameter Cored Wire (12–13 mm)
Most common industrial choice.
Balanced penetration depth and calcium yield.
Used in ladle furnaces (LF) and RH degassers.
Thick-Diameter Cored Wire (14–16 mm)
Advantages:
Higher core weight per meter, reducing feeding time.
Better for large-tonnage converters (200+ tons).
Challenges: Requires higher injection speeds to prevent floating.
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