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Large crucible for melting and pouring in casting

Short Description:

Our large crucibles are engineered to meet the rigorous demands of high-volume metal melting, providing robust performance in extreme temperatures and harsh environments. These crucibles are the perfect solution for foundries and metalworking industries that require reliable, long-lasting equipment for melting large quantities of ferrous and non-ferrous metals.


Product Detail

FAQ

Product Tags

Faster Heat Conduction · Longer Service Life

Premium Thermal Shock Resistant Graphite Crucible

PRODUCT FEATURES

Rapid Melting

High thermal conductivity graphite material improves thermal efficiency by 30%, significantly reducing melting time.

graphite crucibles
graphite crucbiles

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.

grapthite crucibles

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

Precision Formulation

1. Precision Formulation

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

.

Isostatic Pressing

2.Isostatic Pressing

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

.

High-Temperature Sintering

3.High-Temperature Sintering

SiC particle recrystallization forming 3D network structure

.

Rigorous Quality Inspection

5. Rigorous Quality Inspection

Unique tracking code for full lifecycle traceability

.

Surface Enhancement

4.  Surface Enhancement

Anti-oxidation coating → 3× improved corrosion resistance

.

Safety Packaging

6. Safety Packaging

Shock-absorbent layer + Moisture barrier + Reinforced casing

.

PRODUCT APPLICATION

Suitable for most non-ferrous metals

melting aluminium

Melt Aluminium

melting copper

Melt Copper

melting gold

Melt Gold

WHY CHOOSE US

Each large crucible is precision-manufactured through isostatic pressing to ensure uniform thickness and consistency, which results in better heat distribution and extended service life.

Thermal and Mechanical Performance

Large crucibles are designed to withstand extreme temperatures, often reaching up to 1600°C, depending on the specific metal being processed. Their high thermal conductivity ensures faster heating times and energy efficiency, which is essential for large-scale industrial applications.

In addition, their low coefficient of thermal expansion ensures that the crucible resists cracking or warping during rapid temperature changes, making them highly durable for repeated use in heavy-duty operations.

Corrosion and Slag Resistance

When melting large volumes of metals, the crucible is often exposed to corrosive slags and metal oxides that can deteriorate lower-quality materials. Our large crucibles are specially designed with high corrosion resistance, ensuring minimal wear even when melting reactive metals or alloys. The crucible’s smooth inner surface also prevents the buildup of metal residue, ensuring that the molten metal flows freely without sticking, which improves the overall pourability and reduces metal waste.

Capacity and Applications

Our large crucibles are available in various sizes, with capacities ranging from 50 kg to over 500 kg, depending on the specific furnace and metal melting requirements. These crucibles are designed to be compatible with electric induction furnaces, gas-fired furnaces, and resistance furnaces, offering flexibility across different metal processing industries.

Applications include:

  • Foundries and Metal Casting: Ideal for large-scale melting of metals such as aluminum, copper, and steel in foundries that require high throughput and consistent quality.
  • Steel Production: Large crucibles are critical for handling molten steel during the alloying and casting processes.
  • Precious Metal Refining: Perfect for refining operations that deal with gold, silver, and platinum in large quantities.
  • Recycling Industries: Used for melting scrap metals and reprocessing them into usable ingots or components.

Extended Durability and Lifespan

Our large crucibles are built to endure the harsh conditions of continuous metal melting operations. With a lifespan of up to 100 melt cycles depending on the metal type and furnace conditions, they offer long-term cost savings by reducing the frequency of replacements. The robust structure also ensures that the crucible remains structurally sound, even after repeated exposure to high heat and mechanical stress.

Key Features

  • High Thermal Conductivity: Ensures rapid heating and even distribution of temperature.
  • Low Thermal Expansion: Minimizes the risk of cracking under rapid temperature changes.
  • Corrosion and Slag Resistance: Protects the crucible from chemical reactions and slag buildup during melting.
  • Large Capacity: Available in sizes suitable for melting 50 kg to 500 kg or more of metal.
  • Compatibility with Multiple Furnace Types: Suitable for use in electric induction, gas-fired, and resistance furnaces.
  • Long Service Life: Built to withstand multiple melt cycles, reducing operational downtime and replacement costs.

Why Choose Our Large Crucibles?

As a leading supplier of crucibles for industrial applications, we prioritize quality, durability, and performance in every product. Our large crucibles are engineered to enhance productivity and ensure consistent results in high-volume melting processes. Whether you are running a metal foundry, precious metal refinery, or recycling plant, our large crucibles offer the capacity and reliability needed to meet your operational goals.

graphite crucibles

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: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.

Q7:Why should you buy from us not from other suppliers?

Choosing us as your supplier means having access to our specialized equipment and receiving professional technical consultation and excellent after-sales service.

Q8:What value added services does your company provide?

In addition to custom production of graphite products, we also offer value-added services such as anti-oxidation impregnation and coating treatment, which can help to extend the service life of our products.

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

Schedule a Consultation Now!

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