Durable Copper melting crucible BN/BU 200KG 300KG 400KG 500KG
PRODUCT FEATURES
Superior Thermal Conductivity
The unique blend of silicon carbide and graphite ensures rapid and uniform heating, significantly cutting down on melting time.
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.
TECHNICAL SPECIFICATIONS
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No Model OD H ID BD 1 80 330 410 265 230 2 100 350 440 282 240 3 110 330 380 260 205 4 200 420 500 350 230 5 201 430 500 350 230 6 350 430 570 365 230 7 351 430 670 360 230 8 300 450 500 360 230 9 330 450 450 380 230 10 350 470 650 390 320 11 360 530 530 460 300 12 370 530 570 460 300 13 400 530 750 446 330 14 450 520 600 440 260 15 453 520 660 450 310 16 460 565 600 500 310 17 463 570 620 500 310 18 500 520 650 450 360 19 501 520 700 460 310 20 505 520 780 460 310 21 511 550 660 460 320 22 650 550 800 480 330 23 700 600 500 550 295 24 760 615 620 550 295 25 765 615 640 540 330 26 790 640 650 550 330 27 791 645 650 550 315 28 801 610 675 525 330 29 802 610 700 525 330 30 803 610 800 535 330 31 810 620 830 540 330 32 820 700 520 597 280 33 910 710 600 610 300 34 980 715 660 610 300 35 1000 715 700 610 300
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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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
Induction Melting Furnace
Resistance Melting Furnace
WHY CHOOSE US
HOW TO USE AND MAINTENANCE
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.
