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In-line Degassing Unit for Aluminum Melting & Casting: Reduce Ingot Pinhole Defects for Continuous Casting Lines

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In-line Degassing Unit for Aluminum Melting & Casting: Reduce Ingot Pinhole Defects for Continuous Casting Lines

Brand Name:	Boqiang
MOQ:	1 set
Price:	USD 1,000
Packaging Details:	Standard export packaging (carbon box, pallet, film)

Detail Information

Product Description

Detail Information

Place of Origin:

China

Molten Aluminum Operating Temperature:

680‑770 ℃

Degassing Efficiency:

≥56%

Rotor Setup:

2 Composite Graphite Rotors, 0‑600rpm Variable‑frequency Speed Control

Molten Aluminum Throughput:

25‑35 T/h

Outlet Hydrogen (Inlet＜0.28mL/100g):

≤0.12 ML/100g

Inert Gas Requirement:

Purity≥99.996%, Dew Point＜‑69℃

Temperature Control Accuracy:

±2 ℃

Outlet Hydrogen (Inlet＞0.28mL/100g):

≤0.14 ML/100g

Supply Ability:

600 pieces/ year

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In-line degassing unit for aluminum casting

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Product Description

Hydrogen Control Challenges in High-Grade Aluminum Casting

For high-end aluminum profiles and precision castings, fluctuations in hydrogen content within molten aluminum can alter internal metallographic structures. Hydrogen-induced micropores degrade mechanical properties and cause non-conformity during non-destructive testing (NDT).

After conventional furnace refining, molten aluminum reabsorbs hydrogen when exposed to air in the launder. High-end orders demand consistent metallographic indicators, yet furnace-only treatment struggles to maintain melt cleanliness throughout the transfer process. This makes an in-line purification unit essential before casting.

Structure & Purification Logic of the In-line Degassing Unit

Mounted on the launder between the holding furnace and the mold, the unit's twin rotors rotate at high speed to shear argon or nitrogen into micro-sized fine bubbles. These bubbles disperse uniformly throughout the molten aluminum. Dissolved hydrogen diffuses into the bubbles and escapes as they rise to the surface. Suspended alumina inclusions are captured simultaneously, achieving both hydrogen and slag removal. The unit integrates into existing lines without halting continuous casting.

Key Technical Specifications

Item	Specification	Source
Molten aluminum throughput	500–6000 kg/h	Product PDF P3
Rotor material	High-purity graphite with anti-oxidation coating	Product PDF P5
Operating temperature	680–760 °C	Product PDF P4
Purge gas	Argon / Nitrogen	Product PDF P6
Hydrogen removal performance	Final hydrogen content down to 0.12 ml/100g Al	Product PDF P7

Application & Maintenance Notes

The unit serves high-end aluminum billets, automotive precision aluminum castings, and aerospace aluminum blanks. An insulated refractory cabinet limits melt temperature loss, while the compact footprint reduces reconstruction work on original launders.

Graphite rotors are consumables and require periodic replacement based on melt condition and runtime.
The closed-loop gas control system adjusts gas supply parameters according to real-time aluminum flow, ensuring stable melt indicators.

Summary

The molten aluminum in-line degassing unit purifies the aluminum melt at the casting stage and stabilizes hydrogen levels to maintain consistent casting metallography. It helps aluminum mills meet NDT and mechanical property acceptance requirements from high-end aluminum buyers.

Tags:

Aluminum Melting Furnace

Homogenizing Furnace

Billet Casting Machine

Billet Cutting Machine

Regenerative Burner System

Continuous Casting Machine Parts

Aluminum Melting Furnace

Homogenizing Furnace

Billet Casting Machine

Billet Cutting Machine

Regenerative Burner System

Continuous Casting Machine Parts

products details

Aluminum Melting Furnace

Homogenizing Furnace

Billet Casting Machine

Billet Cutting Machine

Regenerative Burner System

Continuous Casting Machine Parts

In-line Degassing Unit for Aluminum Melting & Casting: Reduce Ingot Pinhole Defects for Continuous Casting Lines

In-line degassing unit for aluminum casting

Continuous casting degassing unit reduces pinholes

Aluminum melting degassing unit for ingots

Slip Casting Mold

Wire Feeder

Cooling Crystallizer