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Buy Sic Crucible for Aluminum Furnace Operations

Short Description:

Our Sic Crucibles are crafted using advanced silicon carbide (SiC) and graphite materials, ensuring optimal performance in high-temperature environments. Whether you are working with aluminum, copper, or precious metals, our Sic Crucibles are the professional choice for smelting operations.


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Crucible Quality

Withstands Myriad Smelts

PRODUCT FEATURES

Superior Thermal Conductivity

The unique blend of silicon carbide and graphite ensures rapid and uniform heating, significantly cutting down on melting time.

 

silicon carbide graphite crucible
silicon carbide graphite crucible

Extreme Temperature Resistance

The unique blend of silicon carbide and graphite ensures rapid and uniform heating, significantly cutting down on melting time.

Durable Corrosion Resistance

The unique blend of silicon carbide and graphite ensures rapid and uniform heating, significantly cutting down on melting time.

silicon carbide graphite crucible

TECHNICAL SPECIFICATIONS

 

Graphite / % 41.49
SiC / % 45.16
B/C / % 4.85
Al₂O₃ / % 8.50
Bulk density / g·cm⁻³ 2.20
Apparent porosity / % 10.8
Crushing strength/ MPa (25℃) 28.4
Modulus of rupture/ MPa (25℃) 9.5
Fire resistance temperature/ ℃ >1680
Thermal shock resistance / Times 100

 

 

No Model OD H ID BD
36 1050 715 720 620 300
37 1200 715 740 620 300
38 1300 715 800 640 440
39 1400 745 550 715 440
40 1510 740 900 640 360
41 1550 775 750 680 330
42 1560 775 750 684 320
43 1650 775 810 685 440
44 1800 780 900 690 440
45 1801 790 910 685 400
46 1950 830 750 735 440
47 2000 875 800 775 440
48 2001 870 680 765 440
49 2095 830 900 745 440
50 2096 880 750 780 440
51 2250 880 880 780 440
52 2300 880 1000 790 440
53 2700 900 1150 800 440
54 3000 1030 830 920 500
55 3500 1035 950 925 500
56 4000 1035 1050 925 500
57 4500 1040 1200 927 500
58 5000 1040 1320 930 500

PROCESS FLOW

 premium silicon carbide
Isostatic Pressing
High-Temperature Sintering
brass melting crucible
brass melting crucible
brass melting crucible

1. Precision Formulation

High-purity graphite + premium silicon carbide + proprietary binding agent.

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2.Isostatic Pressing

Density up to 2.2g/cm³ | Wall thickness tolerance ±0.3m

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3.High-Temperature Sintering

SiC particle recrystallization forming 3D network structure

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4.  Surface Enhancement

Anti-oxidation coating → 3× improved corrosion resistance

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5. Rigorous Quality Inspection

Unique tracking code for full lifecycle traceability

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6. Safety Packaging

Shock-absorbent layer + Moisture barrier + Reinforced casing

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PRODUCT APPLICATION

GAS MELTING FURNACE

Gas Melting Furnace

Induction melting furnace

Induction Melting Furnace

Resistance furnace

Resistance Melting Furnace

WHY CHOOSE US

Material Composition
Our crucibles are made from premium silicon carbide and graphite, offering excellent thermal conductivity and thermal shock resistance. This combination of materials ensures superior performance in high-temperature melting applications.

Isostatic Pressing Process
We utilize advanced isostatic pressing technology, which results in a uniform density and enhanced mechanical strength. This process guarantees a defect-free crucible with an extended service life, offering greater value over time.

Innovative Design
The smooth interior surface of our Sic Crucible minimizes metal contamination and improves melting efficiency. Additionally, our crucibles are designed with pour spouts, reducing spills and ensuring safe and precise metal pouring during the casting process.

Crucible sizeProduct Usage Guidelines

Preheating
Before first use, preheat the crucible slowly to 200°C (392°F) to remove any moisture and prevent thermal shock. Then, gradually increase the temperature to the desired operating range.

Loading the Crucible
Ensure even distribution of the metal inside the crucible to avoid imbalance and extend the crucible’s service life. Avoid overloading the crucible for optimal performance.

Melting
Place the crucible in the furnace and heat to the required temperature. Maintain consistent temperature control for the best melting results, ensuring smooth and efficient metal processing.

Pouring the Molten Metal
Once the metal has fully melted, use appropriate tools to carefully tilt the crucible and pour the molten metal into molds. Always follow safety protocols to prevent accidents.

Cooling and Cleaning
After use, allow the crucible to cool down gradually. Clean the crucible thoroughly to remove any metal residue and prepare it for future use, ensuring it remains in excellent condition for the next cycle.

Product Advantages

Superior Thermal Conductivity
The silicon carbide material used in our crucibles provides rapid and even heat distribution, significantly enhancing melting efficiency and speeding up production times.

Durability and Longevity
Thanks to the isostatic pressing process, our crucibles possess outstanding mechanical strength and are highly resistant to cracking, ensuring a long lifespan even under harsh conditions.

Chemical Resistance
Our Sic Crucibles are designed to resist chemical reactions when in contact with molten metals, reducing contamination and preserving the purity of the melted material.

Cost-Effectiveness
With their extended service life and high performance, our crucibles offer a cost-effective solution that reduces the need for frequent replacements, lowering operational costs in the long term.

Versatility Across Industries
Our Sic Crucibles are suitable for melting a wide range of metals, including aluminum, copper, and precious metals. This versatility makes them ideal for various industrial applications, including the automotive, aerospace, and jewelry industries.

 

FAQS

Q1: What are the advantages of silicon carbide graphite crucibles compared to traditional graphite crucibles?

✅ Higher Temperature Resistance: Can withstand 1800°C long-term and 2200°C short-term (vs. ≤1600°C for graphite).
✅ Longer Lifespan: 5x better thermal shock resistance, 3-5x longer average service life.
✅ Zero Contamination: No carbon penetration, ensuring molten metal purity.

Q2: Which metals can be melted in these crucibles?
▸ Common Metals: Aluminum, copper, zinc, gold, silver, etc.
▸ Reactive Metals: Lithium, sodium, calcium (requires Si₃N₄ coating).
▸ Refractory Metals: Tungsten, molybdenum, titanium (requires vacuum/inert gas).

Q3: Do new crucibles require pre-treatment before use?
Mandatory Baking: Slowly heat to 300°C → hold for 2 hours (removes residual moisture).
First Melt Recommendation: Melt a batch of scrap material first (forms a protective layer).

Q4: How to prevent crucible cracking?

Never charge cold material into a hot crucible (max ΔT < 400°C).

Cooling rate after melting < 200°C/hour.

Use dedicated crucible tongs (avoid mechanical impact).

Q5: How to prevent crucible cracking?

Never charge cold material into a hot crucible (max ΔT < 400°C).

Cooling rate after melting < 200°C/hour.

Use dedicated crucible tongs (avoid mechanical impact).

Q6: What is the minimum order quantity (MOQ)?

Standard Models: 1 piece (samples available).

Custom Designs: 10 pieces (CAD drawings required).

Q7: What is the lead time?
⏳ In-Stock Items: Ships within 48 hours.
⏳ Custom Orders: 15-25 days for production and 20 days for mould.

Q8: How to determine if a crucible has failed?

Cracks > 5mm on inner wall.

Metal penetration depth > 2mm.

Deformation > 3% (measure outer diameter change).

Q9: Do you provide melting process guidance?

Heating curves for different metals.

Inert gas flow rate calculator.

Slag removal video tutorials.


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