Introduction: The Smart Choice for Calcium Treatment
In modern steelmaking, calcium treatment is essential for improving castability, modifying inclusions, and enhancing final product quality. However, achieving consistent calcium addition without over-treatment or under-treatment requires the right delivery system.
At Jinli Group, we manufacture premium Calcium Iron (CaFe) Cored Wire—a cost-effective, reliable solution for calcium addition in ladle metallurgy. With our own production facilities and regional warehouses in Southeast Asia and North America, we deliver consistent quality, stable supply, and local technical support to steel mills worldwide.
What Is CaFe Cored Wire?
Calcium Iron cored wire is a tubular product consisting of a steel sheath filled with a precisely blended mixture of metallic calcium powder and iron powder. When injected into molten steel, the wire penetrates below the slag layer, releasing calcium at the optimal depth for efficient reaction.
Typical Composition:
| Component | Content Range |
|---|---|
| Calcium (Ca) | 28–32% |
| Iron (Fe) | 65–70% |
| Other Elements | < 2% |
Available Diameters: 9mm, 9.5mm, 10mm, 13mm (custom sizes available)
Why Choose CaFe Cored Wire?
| Advantage | Benefit |
|---|---|
| Controlled Calcium Addition | Iron dilutes calcium, allowing precise, gradual addition without localized over-treatment |
| Cost-Effective | Lower cost per kilogram compared to pure calcium wire—ideal for routine steel grades |
| Reduced Fuming | Lower calcium concentration minimizes violent reaction and fuming during injection |
| Deep Injection Capability | High density ensures wire reaches the bottom of the ladle before calcium release |
| Consistent Recovery | Stable calcium yield (typically 15–25%) with proper feeding parameters |
Key Applications in Steelmaking
1. Inclusion Modification
Calcium modifies solid alumina (Al₂O₃) inclusions into liquid calcium aluminates (CaO-Al₂O₃), which:
Prevent nozzle clogging during continuous casting
Improve steel cleanliness
Enhance final product mechanical properties
2. Desulfurization
Calcium reacts with sulfur to form calcium sulfide (CaS), which is removed into the slag, enabling production of low-sulfur steel grades.
3. Deoxidation
Calcium acts as a secondary deoxidizer, further reducing oxygen content after aluminum deoxidation.
4. Castability Improvement
Steel grades treated with CaFe wire show significantly improved castability, longer casting sequences, and reduced downtime.
CaFe vs. Pure Calcium Wire: Which One Is Right for You?
| Factor | CaFe Wire | Pure Calcium Wire |
|---|---|---|
| Calcium Content | 28–32% | 97%+ |
| Cost per kg | Lower | Higher |
| Calcium Recovery | 15–25% | 30–40% |
| Best Application | Routine steel grades, cost optimization | High-cleanliness grades, special steel |
| Wire Consumption | Higher | Lower |
Our Recommendation:
Use CaFe wire for standard carbon steel, rebar, structural steel
Use Pure Calcium wire for high-end applications like tire cord, bearing steel, pipeline steel
Jinli Group supplies both options, ensuring you get the right solution for your specific steel grade and cost targets.
Why Jinli Group CaFe Wire Stands Out
| Feature | Jinli Advantage |
|---|---|
| Uniform Core Distribution | Precision filling ensures consistent calcium content along the entire coil |
| Tight Diameter Tolerance | ±0.1mm control ensures smooth feeding through wire injectors |
| High Tensile Strength | ≥500 MPa tensile strength prevents breakage during high-speed injection |
| Consistent Sheath Thickness | Ensures predictable melting depth and calcium release point |
| Custom Formulations | Adjustable calcium/iron ratios to match your specific steel chemistry |
Technical Specifications
| Parameter | Specification |
|---|---|
| Calcium Content | 28–32% (customizable) |
| Iron Content | Balance (65–70%) |
| Sheath Material | Mild steel (low carbon) |
| Wire Diameter | 9mm, 9.5mm, 10mm, 13mm |
| Coil Weight | 50–150 kg (custom available) |
| Core Density | ≥95% (no hollow sections) |
| Tensile Strength | ≥500 MPa |
Quality Assurance
Every shipment of Jinli CaFe cored wire includes a Certificate of Analysis (COA) detailing:
Calcium content (%)
Iron content (%)
Wire diameter
Sheath thickness
Coil weight
Tensile strength
We also offer third-party inspection services (SGS, Bureau Veritas) upon request.
Global Reach, Local Presence
With offices and warehouses in Southeast Asia and North America, Jinli Group combines the manufacturing advantages of China with the service reliability of a local partner.
Our regional hubs ensure:
Short lead times (often < 2 weeks within region)
Reduced freight costs
Local-language technical support
In-person visits when needed
Case Study: Improving Castability with CaFe Wire
Challenge: A Southeast Asian steel mill producing structural steel experienced frequent SEN clogging during continuous casting, limiting casting sequences to 3–4 heats.
Solution: Jinli Group supplied CaFe cored wire (30% Ca) with optimized feeding parameters (feeding speed: 3.5 m/s, injection depth: 2.5 m below slag).
Results:
SEN clogging incidents reduced by 55%
Average casting sequence extended to 7–8 heats
Calcium recovery stabilized at 20–22%
Annual cost savings: approximately USD 180,000
Why Choose Jinli Group?
✅ 25+ years of experience in supplying raw materials to the steel industry
✅ Regional warehouses in Southeast Asia and North America for fast delivery
✅ Technical expertise to help optimize your calcium treatment process
✅ Reliable partnerships with leading steel mills worldwide
✅ Competitive pricing with no compromise on quality
✅ Complete product portfolio: cored wire, silicon calcium, pure calcium, calcined petroleum coke
Contact Us
Ready to optimize your calcium treatment process with high-quality CaFe cored wire?
Request a quote, a free sample, or a technical consultation today.
