Smelting Crucibles for Aluminium scrap and aluminium ingot

Short Description:

To guarantee product excellence, we have developed a unique manufacturing process that takes into account the intense thermal quenching environment of Smelting Crucibles.
The uniform and fine basic structure of the Smelting Crucibles will significantly extend its resistance to erosion.
The excellent thermal shock resistance of Smelting Crucibles enables them to withstand any heat treatment.
The use of special materials greatly improves the acid resistance level and extends the service life of the Smelting Crucibles.

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Product Detail

FAQ

Product Tags

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.

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

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

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PROCESS FLOW

1. Precision Formulation

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

2.Isostatic Pressing

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

3.High-Temperature Sintering

SiC particle recrystallization forming 3D network structure

4. Surface Enhancement

Anti-oxidation coating → 3× improved corrosion resistance

5. Rigorous Quality Inspection

Unique tracking code for full lifecycle traceability

6. Safety Packaging

Shock-absorbent layer + Moisture barrier + Reinforced casing

PRODUCT APPLICATION

Gas Melting Furnace

Induction Melting Furnace

Resistance Melting Furnace

WHY CHOOSE US

Thermal Conductivity

Smelting crucibles, especially those made of Silicon Graphite, offer superior heat transfer thanks to the crystalline natural graphite. This ensures quick and even heating, improving the smelting process and enhancing productivity.

Extended Service Life
Due to the advanced isostatic pressing technology, our silicon graphite crucibles last 2-5 times longer than traditional clay graphite crucibles. This significantly reduces downtime and maintenance costs, offering great long-term value for smelting operations.

Corrosion Resistance
With a specially formulated two-layer glaze coating, the crucibles resist corrosion from molten metals and chemical reactions, ensuring longevity even in harsh industrial environments.

Enhanced Density and Mechanical Strength
The density of these smelting crucibles reaches up to 2.3, making them among the best for thermal conductivity and resistance to mechanical stress. This density also prevents defects, contributing to higher efficiency during smelting.

Energy Efficiency
Due to their high heat retention and rapid heat transfer, smelting crucibles help save fuel and energy costs. In addition, their high oxidation resistance reduces the need for frequent replacements, contributing to sustainable operations.

Low Pollution
Our crucibles are designed with minimal impurities, ensuring that no harmful substances contaminate the smelting process. This is critical when dealing with metals such as aluminum and alloys, where purity is essential.

Investing in high-quality smelting crucibles ensures that your industrial smelting processes run efficiently and reliably. With enhanced thermal conductivity, durability, and corrosion resistance, these crucibles are perfect for metalworking industries focused on aluminum melting, alloy smelting, and high-temperature furnaces.

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.