Premium SiC 88% Granular Deoxidizer (1-10mm) for High-Quality Iron Casting
- Eliminate Gas Porosity: Dramatically reduce hydrogen and nitrogen-related pinholes for pressure-tight castings.
- Precision Grain Sizing: 1-10mm distribution ensures optimal residence time in the melt for 95% silicon recovery.
- Lower Slag Volume: Highly reactive formula reduces iron oxide in the slag, minimizing metal loss and skimming labor.
- Enhance Graphite Nucleation: Increase eutectic cell count to prevent white-mouth (chill) in thin-walled iron components.
- ZhenAn Direct Logistics: Factory-scale production ensures stable chemical purity and JIT (Just-In-Time) delivery to your foundry.
The Metallurgical Advantage of Granular SiC 88%
In the competitive landscape of iron casting, achieving consistent mechanical properties is a constant challenge. ZhenAn's 1-10mm Silicon Carbide serves as a vital metallurgical conditioner. Unlike traditional ferrosilicon, SiC provides a unique carbon-silicon synergy that modifies the solidification kinetics of molten iron.
The chemical reaction within the induction furnace or ladle is highly efficient and strongly exothermic, meaning it generates internal heat, which helps maintain the fluidity of the melt without increasing external power consumption.
Practical Benefits for Foundry Applications
Microstructure Refinement
The 1-10mm granules act as powerful pre-inoculants. By providing a high density of stable nuclei, the SiC ensures that carbon precipitates as fine, evenly distributed graphite flakes (Type A) rather than brittle carbides, significantly improving the machinability of the iron.
Cost-Effective Alloying
Silicon Carbide 88% is the most economical way to increase both Carbon and Silicon levels. By utilizing the "double-acting" nature of SiC, foundries can reduce their reliance on expensive high-purity pig iron and specialty carbon raisers.
Slag Reduction & Lining Protection
Aggressive slag is the primary cause of refractory failure. Our SiC 88% aggressively "cleans" the slag by reducing its FeO content. This results in a dry, non-aggressive slag that is easily removed and does not chemically attack the furnace lining.
Technical Specification & Batch Analysis
The following parameters define the metallurgical consistency of ZhenAn 1-10mm Silicon Carbide granules.
| Property Parameter |
Guaranteed Value |
Physical Standard |
Performance Data |
| SiC (Min) |
88.00% |
Grain Size |
1-10 mm (92% min) |
| Aluminum (Al) |
≤1.1% |
Melting Point |
2,730°C (Dissociation) |
| Free Carbon (C) |
≤3.5% |
Moisture Content |
≤0.4% |
| Ferrous Oxide (Fe₂O₃) |
≤1.4% |
Bulk Density |
1.48 g/cm³ |
| Phosphorus (P) |
≤0.04% |
Trace Elements |
Ultra-low Lead/Zinc |
Why Leading Foundries Partner with ZhenAn
- Reduced Scrap Rates: Consistent deoxidation leads to a significant decrease in casting rejection due to slag inclusions or gas holes.
- Controlled Sizing: Our 1-10mm granules are dust-free, ensuring that the material reaches the molten bath rather than being lost to the dust collection system.
- SGS & ISO Compliance: Every shipment is accompanied by a full laboratory report, ensuring that the chemical signature of your melt remains within tight tolerances.
FAQ: Frequently Asked Questions
Is 1-10mm the best size for induction furnace melting?
Yes. The 1-10mm size is large enough to sink through the slag but small enough to dissolve quickly during the stirring cycle of an induction furnace. It provides a more uniform recovery than large lumps or fine powders.
How does SiC 88% improve the "chill" factor in iron?
By increasing the silicon activity and providing carbon nuclei, SiC 88% pushes the iron away from the "white iron" (carbide) zone and into the "gray iron" (graphite) zone, even in thin cross-sections that cool rapidly.
Can I use SiC 88% in ductile iron production?
Absolutely. While used most commonly in gray iron, it is an excellent deoxidizer for ductile iron base metal. It reduces the amount of magnesium ferrosilicon (MgFeSi) needed by ensuring the base metal is fully deoxidized before the nodularizing treatment.
What is the typical shelf life of these granules?
If stored in a dry, covered environment in the original ZhenAn jumbo bags, the material has an indefinite shelf life. It does not oxidize or degrade at room temperature.
How much Silicon is recovered from SiC 88%?
Under standard induction furnace conditions, you can expect a 90% to 95% recovery rate for Silicon and a 85% to 90% recovery rate for Carbon, making it much more efficient than many coal-based recarburizers.
Does ZhenAn provide customized chemical specifications?
Yes. While 88% is our standard metallurgical grade, we can adjust the sizing (e.g., 1-5mm or 3-10mm) and chemical balance to meet the specific requirements of your casting process.
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