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Crucibles for melting furnace and holding furnace in die casting

Short Description:

With a focus on advanced technology and superior material properties, our Crucibles for melting ensure excellent performance in various metal melting processes, including melting copper, bronze, aluminum, gold, silver, and lead. Whether you’re working in industrial smelting or hobby casting, our Crucibles for Melting are engineered for corrosion resistance, high-temperature endurance, oxidation protection, and durability.


Product Detail

FAQ

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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 H

OD

BD

CU210 570# 500 605 320
CU250 760# 630 610 320
CU300 802# 800 610 320
CU350 803# 900 610 320
CU500 1600# 750 770 330
CU600 1800# 900 900 330

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

Our corporation promises all end users in the first-class solutions as well as most satisfying post-sale services. We warmly welcome our regular and new shoppers to join us for Crucibles For Melting, Our company has already had a lot of top factories and experienced technology teams in China, offering the best goods, techniques and services to worldwide customers. Honesty is our principle, specialist operation is our work, service is our goal, and customers' satisfaction is our future!

(1) High thermal conductivity: due to the use of raw materials such as graphite with high thermal conductivity, the melting time is shortened;

(2) Heat resistance and shock resistance: Strong heat resistance and shock resistance, resistant to cracking during rapid cooling and heating;

(3) High heat resistance: High temperature resistance, capable of withstanding high temperatures ranging from 1200 to 1650 ℃;

(4) Resistance to erosion: Strong resistance to erosion of molten soup;

(5) Resistance to mechanical impact: having a certain degree of strength against mechanical impact (such as the input of molten materials)

(6) Oxidation resistance: Graphite is prone to oxidation at high temperatures in oxidation aerosols, resulting in less oxidation consumption due to oxidation prevention treatment;

(7) Anti adhesion: Because graphite has the characteristic of not easily adhering to molten soup, the immersion and adhesion of molten soup are less;

(8) There is very little metal pollution: because there is no impurity mixed with the contaminated molten soup, there is very little metal pollution (mainly because iron is not added to the molten soup);

(9) Impact of slag collector (slag remover): It has good resistance to the impact of slag collector (slag remover) on performance.

Our melting crucibles are used in a variety of industrial applications, like metallurgy, semiconductor manufacturing,glass production, and the chemical industry. Our Silicon carbide crucibles have the advantage of high-temperature melting and resistance to chemical attack. They are known for their excellent thermal conductivity,high thermal shock resistance, and resistance to chemical attack.

Our corporation promises all end users in the first-class solutions as well as most satisfying post-sale services. We warmly welcome our regular and new shoppers to join us for Free sample for smelting crucible,, We're incredibly proud with the excellent name from our shoppers for our products' trustworthy quality.
Free sample for smelting crucible , Our company has already had a lot of top factories and experienced technology teams all over the world, offering the best goods, techniques and services to worldwide customers. Honesty is our principle, specialist operation is our work, service is our goal, and customers' satisfaction is our future!

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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