Heavy-Duty Molten Aluminum Pouring Nozzle

Product Specifications

Technical details and manufacturing context for Heavy-Duty Molten Aluminum Pouring Nozzle

Definition

This heavy-duty pouring nozzle is a precision-engineered refractory component designed for the controlled transfer of molten aluminum from holding furnaces to casting molds or launder systems. It is used in non-ferrous metal production, specifically in aluminum casting operations where consistent flow and thermal stability are critical. The nozzle features advanced thermal shock resistance and erosion protection, enabling it to withstand prolonged exposure to temperatures exceeding 700°C. Its calibrated bore ensures consistent flow rates and minimizes turbulence during pouring, which helps reduce oxide formation and gas entrapment in the cast metal. The robust construction, including a stainless steel reinforcement ring, prevents metal contamination and maintains dimensional stability throughout extended production cycles. The nozzle is manufactured from high-alumina refractory ceramic and silicon carbide composite, offering a balance of thermal insulation, mechanical strength, and corrosion resistance. Key parameters include an operating temperature range of 800–1200°C, a bore diameter tolerance of ±0.5 mm (ISO 2768-m), and a thermal shock resistance of at least 50 cycles. The alumina content is at least 75% (GB/T 2988), and the bulk density ranges from 2.8 to 3.2 g/cm³ (GB/T 2997). The nozzle can handle a maximum flow rate of 15 kg/min and has a service life of 300–500 hours under typical operating conditions. It is designed to operate at pressures between 1.0 and 1.6 MPa, with an overall length of 300–500 mm and an outer diameter of 80–120 mm, fitting standard ladle openings. The weight per unit is 5–8 kg, depending on size. The apparent porosity is ≤18% (GB/T 2997), and the cold crushing strength is ≥60 MPa (GB/T 5072). These specifications are reference values; always verify model-specific data with the manufacturer or supplier before procurement.

Working Principle

The nozzle operates on the principle of gravity-driven flow through a tapered refractory bore. The taper helps regulate the flow rate of molten aluminum, ensuring a consistent stream. Thermal insulation layers within the nozzle maintain the metal temperature, preventing premature solidification during transfer. The refractory materials, including high-alumina ceramic and silicon carbide, provide thermal shock resistance and erosion protection, allowing the nozzle to withstand repeated heating and cooling cycles. The stainless steel reinforcement ring adds structural integrity, preventing cracking or deformation under mechanical stress. The calibrated bore minimizes turbulence, reducing the risk of oxide inclusion and gas entrapment in the cast product.

Common Materials

High-Alumina Refractory Ceramic, Silicon Carbide Composite, Stainless Steel Reinforcement Ring

Technical Parameters

Parameter	Typical range	Notes & selection driver
Operating Temperature RangeRequired	800–1200 °C	Continuous service temperature limits
Bore Diameter ToleranceRequired	±0.5 mm	Manufacturing precision of flow channelISO 2768-m
Thermal Shock Resistance CyclesRequired	≥50 cycles	Number of heating-cooling cycles before failure
Alumina ContentRequired	≥75 %	Refractory material purity affecting corrosion resistanceGB/T 2988
Maximum Flow RateRequired	15 kg/min	Peak molten aluminum throughput capacity
Service Life	300–500 hours	Expected operational duration before replacement
Overall Length	300–500 mm	Customizable per customer drawing
Outer Diameter	80–120 mm	Fits standard ladle openings
Weight	5–8 kg	Per unit, depending on size
Bulk Density	2.8–3.2 g/cm³	Higher density improves strengthGB/T 2997
Apparent Porosity	≤18 %	Lower porosity reduces slag penetrationGB/T 2997
Cold Crushing Strength	≥60 MPa	Ensures structural integrity during handlingGB/T 5072

Ranges are indicative industry figures for RFQ preparation, not a supplier commitment. Confirm every value and standard with the legal manufacturer before ordering.

Components / BOM

Refractory Nozzle Body
Primary flow channel and thermal barrier

Material: High-Alumina Ceramic
Thermal Expansion Joint
Accommodates thermal expansion during heating cycles

Material: Compressed Ceramic Fiber
Mounting Flange Part
Secures nozzle to furnace or launder system

Material: 310 Stainless Steel
Bore Liner Insert Optional Part
Replaceable wear surface for extended service life

Material: Silicon Carbide
Steel Reinforcement Ring
Bands the refractory body to stop it cracking under mechanical stress.

Material: Stainless steel
Thermal Insulation Layer
Holds the melt temperature through the nozzle so the aluminum does not freeze in the bore.

Industry Taxonomies & Aliases

Commonly used trade names and technical identifiers for Heavy-Duty Molten Aluminum Pouring Nozzle.

Manufacturers of Heavy-Duty Molten Aluminum Pouring Nozzle

Manufacturer profiles associated with Heavy-Duty Molten Aluminum Pouring Nozzle.

Sourcing Heavy-Duty Molten Aluminum Pouring Nozzle from China?

Tell us your specification and target quantity — we will match it against manufacturer records and come back with the factories that fit.

Request manufacturers We manufacture this

Manufacturer listings support early research and capability understanding. They are not certification, ranking, or transaction guarantees.

Procurement Evaluation Criteria

A practical evidence checklist for RFQ preparation and supplier evaluation.

Technical documentation

Request current drawings, revision history, and a signed specification sheet.

Manufacturing capability

Verify equipment lists, process limits, capacity, and representative production evidence.

Inspection readiness

Confirm test methods, calibrated equipment, sampling plans, and traceable reports.

Supplier transparency

Check the legal entity, factory address, ownership, certifications, and direct contacts.

CNFX does not score or rank suppliers. Buyers must verify all claims and documents with the legal manufacturer before ordering.

Frequently Asked Questions

What is the maximum operating temperature of this pouring nozzle?

The nozzle is designed for continuous service in the range of 800–1200°C. However, the exact maximum temperature depends on the specific model and application. Always verify with the manufacturer for your particular process.

How long does the nozzle last before replacement?

The expected service life is 300–500 hours under typical operating conditions. Actual lifespan can vary based on factors such as pouring temperature, frequency of thermal cycling, and maintenance practices. Regular inspection is recommended.

Can the nozzle be customized to fit different ladle openings?

The overall length and outer diameter are customizable per customer drawing, with standard ranges of 300–500 mm and 80–120 mm, respectively. Contact the supplier to discuss your specific dimensional requirements.

What standards are referenced for the nozzle's specifications?

The listed standards include ISO 2768-m for bore diameter tolerance, GB/T 2988 for alumina content, GB/T 2997 for bulk density and apparent porosity, and GB/T 5072 for cold crushing strength. These are reference standards; verify compliance with the manufacturer.

Data Basis

Editorial classification, named public sources where available, and source-reviewed manufacturer records.

Preliminary Technical Classification

This page supports structured research, RFQ preparation, and supplier evaluation. It does not replace buyer-led supplier qualification, standards review, or technical approval.

Buyer enquiry

Request manufacturing insight for Heavy-Duty Molten Aluminum Pouring Nozzle

Ask for use case, specification boundaries, supplier type, and RFQ preparation information for this product.

Where it goes: Straight to the CNFX editorial desk, and to the manufacturer if this product is linked to a claimed profile. Nothing is broadcast to a supplier list.
Your details stay here: We do not sell or rent enquiry data, and we do not add you to a mailing list. Used only to answer this request.
No commission, no middleman: CNFX is a directory. We take no cut of any order and never negotiate on a supplier's behalf.
What we don't claim: A listing is not an endorsement. Qualify every supplier and verify every figure yourself before ordering.

pressure:	0.1 to 0.5 bar (gravity-fed pouring systems)
flow rate:	5 to 50 kg/min (depending on nozzle diameter)
temperature:	700°C to 900°C (typical aluminum pouring range)
slurry concentration:	Not applicable - designed for pure molten aluminum alloys