High-Performance SiC 88% (1-10mm) - Advanced Deoxidizer for the Iron Casting Industry
- Optimize Casting Integrity: Drastically reduce gas-related scrap rates by purging dissolved oxygen and nitrogen from the melt.
- Stable Silicon/Carbon Pickup: 1-10mm grading ensures a high recovery rate of over 92% for Silicon and stable Carbon enrichment.
- Reduce Melting Time: Leverage the exothermic reaction of SiC 88% to boost bath temperature and shorten furnace tap-to-tap times.
- Slag Volume Control: Rapidly transforms "sticky" furnace slag into a manageable, dry state, reducing metal loss during skimming.
- Reliable Global Supply: Direct factory-direct procurement from ZhenAn ensures consistent batch chemistry and 15-day rapid shipping.
The Metallurgical Superiority of 1-10mm SiC 88%
In modern foundry operations, the consistency of the base metal is the foundation of quality. ZhenAn's 1-10mm Silicon Carbide 88% is a high-density industrial material designed to condition the melt. Unlike standard ferrosilicon, SiC provides a unique carbon-silicon synergy that acts as a potent nucleating agent for graphite flake formation.
The chemical interaction within the induction furnace or cupola is highly efficient: SiC + 3[O] → SiO₂ + CO↑
The CO gas generated by this reaction provides a "cleansing" effect, helping to lift microscopic non-metallic inclusions to the slag layer, which results in a significantly tougher and more machinable iron.
Key Applications & Foundry Performance
Gray and Ductile Iron Pre-treatment
SiC 88% is a strategic "chill" reducer. By increasing the silicon activity in the local melt zones, it promotes a high density of eutectic cells. This effectively prevents the formation of hard iron carbides (cementite), ensuring the casting remains easy to machine even in thin sections.
Induction Furnace "Sandwich" Charging
The 1-10mm sizing is ideal for "sandwich" charging. By placing the material between layers of scrap metal, you ensure maximum contact time during the melting phase. This prevents the SiC from floating on the surface and ensures the highest possible recovery of alloying elements.
Refractory Life Extension
Aggressive iron oxides (FeO) in the slag are the primary cause of chemical erosion in furnace linings. Our SiC 88% granules aggressively "kill" the slag at the interface, protecting your refractory investment and lowering annual maintenance costs.
Technical Data & Chemical Specification
The following table outlines the unique technical parameters of ZhenAn 1-10mm Metallurgical SiC 88, specifically processed for industrial foundry lines.
| Quality Metric |
Guaranteed Value |
Physical Profile |
Details |
| SiC Content (Min) |
88.0% |
Size Distribution |
1.0mm - 10.0mm |
| Fixed Carbon (C) |
2.5% - 4.5% |
Melting Point |
2,700°C (Sublimation) |
| Aluminum (Al) |
≤ 1.0% |
Hardness |
9.0 Mohs |
| Sulfur (S) |
≤ 0.05% |
Bulk Density |
1.48 - 1.55 g/cm³ |
| Nitrogen (N) |
≤ 0.015% |
Moisture (Max) |
0.4% |
Why Procurement Teams Partner with ZhenAn
- Dust-Free Processing: Our 1-10mm granules are screened to remove fine dust, ensuring that the material reaches the molten bath rather than being lost to the furnace's environmental extraction system.
- Low-Impurity Profile: With ultra-low sulfur and nitrogen levels, our SiC is the ideal choice for producing high-quality automotive and pressure-tight iron castings.
- Verified Export Quality: Every shipment is accompanied by a full laboratory report (COA). We also facilitate third-party inspections by SGS or Bureau Veritas to verify chemical and physical specs before loading.
FAQ: Frequently Asked Questions
1. Why is 1-10mm the best size for iron casting induction furnaces?
The 1-10mm range provides an excellent balance. It is small enough to have a massive reactive surface area for fast deoxidation, yet heavy enough to sink through the slag without being lost to the exhaust system.
2. How does SiC 88% improve the "chill" factor in iron?
By providing stable carbon nuclei, SiC 88% pushes the solidification toward the "gray iron" (graphite) zone and away from the "white iron" (carbide) zone. This eliminates hard spots in thin-walled cross-sections.
3. Can I use SiC 88% to replace both my Ferrosilicon and Carbon raiser?
In many applications, yes. Every 1,000kg of SiC 88 provides approximately 610kg of Silicon and 260kg of Carbon. This "double-acting" nature allows you to simplify your charge recipe and reduce the total cost per ton.
4. Does using Silicon Carbide increase the risk of pinholes?
No, it does the opposite. Pinholes are often caused by excessive oxygen or hydrogen. SiC 88% aggressively scavenges oxygen and creates a CO boil that helps "flush" other gases from the melt, leading to sounder castings.
5. What is the storage requirement for the 1.0mt jumbo bags?
While SiC is chemically stable, we recommend storing the bags on a dry, level surface. ZhenAn's export bags include a heavy-duty moisture-proof liner to prevent moisture pickup, ensuring the material stays dry for immediate furnace use.
6. Does ZhenAn provide a Certificate of Analysis (COA) for each batch?
Yes. Every shipment is sampled and tested in our laboratory using XRF and titration methods. We provide a full COA with every delivery and can arrange for third-party inspections upon client request.
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