High-Efficiency SiC 90% Deoxidizer (1-10mm) - High Purity Silicon Carbide for Precision Iron Casting
Premium silicon carbide deoxidizer designed specifically for high-performance iron casting applications, delivering superior metallurgical results and operational efficiency.
- Zero-Defect Casting: Eliminate subsurface blowholes and gas porosity by aggressively lowering the dissolved oxygen potential.
- Optimized Recarburization: Achieve stable carbon recovery rates of over 90% without the sulfur impurities found in petroleum coke.
- Uniform 1-10mm Grading: Specifically sized for induction furnace stirring, ensuring rapid immersion and zero material float-off.
- Enhanced Fluidity: Improve the molten iron "run" to fill thin-walled or complex molds with reduced misruns and cold shuts.
- ZhenAn Certified Supply: Direct-from-manufacturer pricing with guaranteed chemical purity and 24/7 technical support for foundry trials.
The Metallurgical Dynamics of 90% Purity SiC
In the production of high-performance gray and ductile iron, the purity of the deoxidizer dictates the final mechanical properties. ZhenAn's 1-10mm SiC 90% serves as a potent metallurgical catalyst. Unlike lower-grade silicon sources, the 90% concentration ensures a high-energy dissociation that effectively modifies the eutectic solidification of the iron.
The chemical interaction within the furnace is highly efficient:
This reaction is not only cleansing but also generates internal chemical heat, which helps maintain the liquidus temperature during long holding periods.
Practical Advantages for Modern Foundries
1. Microstructure Modification
SiC 90% acts as a long-lasting nucleating agent. By increasing the number of eutectic cells, it promotes the formation of "Type A" graphite flakes. This results in a significant increase in the tensile strength and vibration-damping capacity of the finished casting.
2. Refractory Wear Reduction
Aggressive iron oxides (FeO) are the primary cause of erosion in furnace and ladle linings. Our SiC 90% granules rapidly reduce these oxides into metallic iron, significantly extending the life of your refractory investment and lowering maintenance costs.
3. Precision Alloying Control
The 1-10mm granular form is designed for automated dosing. Its consistent density ensures it bypasses the slag layer to react directly with the metal, providing predictable Silicon (Si) and Carbon (C) pickup with minimal variance between heats.
Technical Specification & Chemical Profile
The following table outlines the rigorous quality control parameters for ZhenAn 1-10mm High Purity Silicon Carbide.
| Quality Metric |
Premium Value |
Physical Feature |
Details |
| SiC Purity (Min) |
90.00% |
Size Distribution |
1.0mm - 10.0mm |
| Free Graphite (C) |
2.5%−3.8% |
Bulk Density |
1.50 g/cm3 |
| Aluminum (Al) |
≤0.6% |
Color |
Crystalline Grey/Black |
| Iron (Fe₂O₃) |
≤1.2% |
Hardness |
9.2 Mohs |
| Moisture |
≤0.4% |
Packaging |
1,000kg Waterproof Jumbo Bags |
Why Global Foundries Partner with ZhenAn
- Lower Scrap Rates: Our high-purity granules ensure that "chill" and hard spots are a thing of the past, even in rapidly cooled thin-section castings.
- Dust-Free Processing: We utilize advanced aspiration systems during screening to ensure the 1-10mm product is free of fines, protecting your furnace exhaust systems.
- Global Compliance: ZhenAn provides full traceability and third-party inspection (SGS/BV) to verify that every shipment meets international metallurgical standards.
FAQ: Frequently Asked Questions
1. Is SiC 90% better than Ferrosilicon 75 for deoxidation?
Yes. SiC 90% provides a more potent deoxidation effect and also adds high-purity carbon. Unlike FeSi 75, the reaction of SiC is strongly exothermic, which helps keep the melt hot and reduces the electricity needed to reach tapping temperature.
2. How does the 1-10mm size affect the inoculation of gray iron?
The 1-10mm range provides a "sustained-release" effect. The finer particles provide immediate nucleation, while the larger granules continue to react during the pouring cycle, ensuring the inoculation remains effective from the first mold to the last.
3. Does using 90% Silicon Carbide increase the risk of slag inclusions?
Actually, it reduces them. By converting sticky iron oxides into liquid iron and silica (which floats easily), SiC 90% makes the slag much "shorter" and easier to remove, preventing slag from being trapped in the final casting.
4. Can SiC 90% replace carbon raisers in a cupola furnace?
While it provides a significant amount of carbon, it is typically used as a chemical conditioner rather than a primary carbon source. However, foundries using SiC 90% find they can use 20% less petroleum coke while achieving better metal quality.
5. What is the typical recovery rate of Silicon from your granules?
In a well-maintained induction furnace with proper stirring, you can expect a Silicon recovery rate of 92% to 96%. The Carbon recovery usually sits between 85% and 90%, depending on the initial oxygen levels of the melt.
6. Is ZhenAn SiC 90% suitable for ductile iron production?
Absolutely. It is an excellent base-metal deoxidizer. By ensuring the metal is "dead" (fully deoxidized) before the magnesium treatment, it increases the efficiency of the nodularizer and reduces the total MgFeSi consumption.
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