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Graphite Crucible for Gold Melting Silicon Carbide Bonding
PRODUCT FEATURES
Rapid Melting
High thermal conductivity graphite material improves thermal efficiency by 30%, significantly reducing melting time.


Superior Thermal Shock Resistance
Resin-bonded technology withstands rapid heating and cooling, allowing direct charging without cracking.
Exceptional Durability
High mechanical strength resists physical impact and chemical erosion for a longer service life.

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 | H | OD | BD |
RA100 | 100# | 380 | 330 | 205 |
RA200H400 | 180# | 400 | 400 | 230 |
RA200 | 200# | 450 | 410 | 230 |
RA300 | 300# | 450 | 450 | 230 |
RA350 | 349# | 590 | 460 | 230 |
RA350H510 | 345# | 510 | 460 | 230 |
RA400 | 400# | 600 | 530 | 310 |
RA500 | 500# | 660 | 530 | 310 |
RA600 | 501# | 700 | 530 | 310 |
RA800 | 650# | 800 | 570 | 330 |
RR351 | 351# | 650 | 420 | 230 |
PROCESS FLOW

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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5. Rigorous Quality Inspection
Unique tracking code for full lifecycle traceability
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4. Surface Enhancement
Anti-oxidation coating → 3× improved corrosion resistance
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6. Safety Packaging
Shock-absorbent layer + Moisture barrier + Reinforced casing
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PRODUCT APPLICATION
Suitable for most non-ferrous metals

Melt Aluminium

Melt Copper

Melt Gold
WHY CHOOSE US

FAQS
Q1: Can The Crucible Cover reduce energy costs?
A: Absolutely! It reduces heat loss, cutting energy consumption by up to 30%.
Q2: What furnaces are compatible?
A: It’s versatile—suitable for induction, gas, and electric furnaces.
Q3: Is graphite silicon carbide safe for high temperatures?
A: Yes. Its thermal and chemical stability makes it perfect for extreme conditions.
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:How can we guarantee quality?
We guarantee quality through our process of always creating a pre-production sample before mass production and conducting a final inspection before shipment.
Q8:What is your production capacity and delivery time?
Our production capacity and delivery time depend on the specific products and quantities ordered. We work closely with our customers to understand their needs and provide them with accurate delivery estimates.
Q9:Is there a minimum purchase requirement I need to meet when ordering your products?
Our MOQ depends on the product, feel free to contact us for more.
Case Study #1
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Case Study #2
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Testimonials
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- Jane Doe
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- John Doe