Inoculant Calcium Silicon/ Casi Cored Wire From Supplier
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What is the definition and structural characteristics of silicon-calcium core wire?
Silicon-calcium core wire is a metallurgical composite material made by wrapping silicon-calcium alloy powder with cold-rolled low-carbon steel strip, forming a wire-like structure with a standard diameter of 13 mm ± 0.6 mm (tolerance ± 0.3 mm).
Outer shell: Cold-rolled steel strip with a thickness of 0.4–0.7mm, protecting the core powder and controlling the melting rate.
Core material: Silicon-calcium alloy powder (silicon 55–65%, calcium 28–29%), particle size ≤3mm, filling density error ±2%.
Process: Cold-rolled seamless forming, core material content 45.8–56.3%, linear density 3.1–4.62 g/cm³.
What is the core function of Casi Cored Wire?
✅ 1. Deep purification of molten steel
Deoxidation and desulfurization: Calcium (Ca) has a strong affinity for oxygen/sulfur, forming low-melting-point CaO and CaS that float to the surface, reducing oxygen content in molten steel to ≤8 ppm and achieving a desulfurization rate exceeding 30%.
Inclusion modification: High-melting-point Al₂O₃ (melting point 2050°C) is converted into liquid calcium aluminate (melting point <1400°C), reducing continuous casting nozzle blockage rates by 90%.
✅ 2. Improved metallurgical efficiency
High element recovery rate: The steel shell prevents calcium volatilization, achieving a calcium recovery rate of 24–40% (traditional process <5%), with alloy utilization improved by 15–20%.
Cost optimization: Reduces smelting time by 8–15 minutes, lowering ton-steel costs by 18–22 yuan.
✅ 3. Improved steel properties
Enhanced castability: Improves molten steel fluidity, reduces sulfide inclusions, and improves continuous casting billet surface quality.
Mechanical property optimization: Refines grain size, enhancing steel tensile strength and impact toughness.
What are the typical applications of Casi Cored Wire?
Special steel production
Stainless steel/bearing steel: Deeply deoxidize and control inclusion morphology to enhance fatigue resistance.
Low-silicon steel grades: Replace aluminum final deoxidation with calcium treatment to avoid excessive silicon content.
Continuous casting process optimization
Intermediate ladle molten steel treatment to ensure smooth continuous casting and reduce pouring interruptions.
Casting applications
As a cast iron inoculant, refine graphite structure and eliminate white mouth defects.
What is the price of silicon calcium cored wire?
| Product (yuan/ton, tax included) | area | Transaction price on July 10 | Transaction price on July 9 | Change Yuan/ton |
| Calcium SiliconCore WireCa30Si58∮13mm | Jiangsu | 9200-9400 | 9200-9500 | ↓50 |
| Calcium silicon cored wire Ca28Si55∮13mm | Henan | 8100-8400 | 8200-8400 | ↓50 |
What are the advantages of silicon-calcium core wire?
Pure steel melt: Deep deoxidation and desulfurization, with impurity modification rates reaching 90%;
Cost reduction and efficiency improvement: Calcium recovery rates increased by 5–8 times, reducing ton-steel costs by 20%;
Process innovation: Feeding technology compatible with continuous casting, refining, and other scenarios, driving the transition to green metallurgy.
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