Process Technology

Technical coverage across the complete aluminum-processing value chain.

01
Process Stage

Aluminum Melting

铝熔炼工艺

The melting stage converts ingot, scrap or primary aluminum into clean liquid metal at a controlled casting temperature.

Key Process Parameters

  • Melting temperature: 720–780°C
  • Gas consumption: ≥52 m³/T·Al with regenerative burners
  • Rotary degassing with N₂/Ar
  • OES composition analysis before casting
  • Bag-filter and wet-scrubber emission control
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Aluminum Melting process
02
Process Stage

DC Casting

半连续铸造工艺

Direct-chill casting produces aluminum billets and rolling slabs with controlled cooling, surface quality and grain structure.

Key Process Parameters

  • Round billet: Ø63–600 mm
  • Slab: up to 1300 × 460 mm
  • Casting speed: 10–500 mm/min
  • Surface segregation: <0.3 mm with slip casting
  • Alloys: 1xxx–8xxx
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DC Casting process
03
Process Stage

Homogenizing

均匀化处理工艺

Homogenizing heat treatment reduces residual stress and microstructural non-uniformity in cast billets before extrusion.

Key Process Parameters

  • Furnace capacity: 8–60 T
  • Maximum temperature: 650°C
  • Temperature accuracy: ±5°C
  • Natural gas: 25–35 m³/T billet
  • Charging-car alignment: ≤5 mm
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Homogenizing process
04
Process Stage

Continuous Casting

连续铸造工艺

Continuous casting produces aluminum rod or strip directly from molten metal, reducing intermediate processing and energy consumption.

Key Process Parameters

  • CC&R rod: Ø8 mm, 3–12 T/hr
  • Twin-roll strip: 4–8 mm thick, up to 1600 mm wide
  • Typical alloys: 1050, 1350 and EC grade
  • Energy saving: 35–45% versus conventional routes
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Continuous Casting process
05
Process Stage

Hot & Cold Rolling

冷热轧制工艺

Rolling converts slab or cast strip into coil, sheet and foil at controlled gauge, flatness and surface quality.

Key Process Parameters

  • Cold-rolling range: 0.006–6 mm
  • Strip width: 300–1850 mm
  • Maximum speed: 400 m/min for cold rolling
  • AGC gauge control: ±0.005 mm
  • Closed-loop rolling-oil management
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Hot & Cold Rolling process
06
Process Stage

Extrusion

铝挤压工艺

Heated billets are forced through precision dies to produce profiles, tubes and rods for architectural and industrial use.

Key Process Parameters

  • Billet temperature: 450–520°C
  • Press force: 500T–3600T
  • Extrusion speed: 5–50 m/min
  • Water quench, stretching and T5/T6 aging
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Extrusion process
07
Process Stage

Annealing

退火工艺

Annealing relieves cold-work hardening and restores ductility for coil, sheet and foil production.

Key Process Parameters

  • Temperature: 300–400°C depending on alloy
  • Box-furnace load: 5–30 T
  • Continuous line: up to 300 m/min
  • Strip range: 0.1–3 mm
  • Output tempers: O, H14 and H18
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Annealing process
08
Process Stage

Slitting

铝带分条工艺

Slitting converts wide master coils into narrow strips with accurate width, controlled tension and clean edges.

Key Process Parameters

  • Input width: 200–1850 mm
  • Thickness: 0.1–6 mm
  • Width tolerance: ±0.05 mm
  • Line speed: up to 500 m/min
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Slitting process
09
Process Stage

Circle Punching

铝圆片冲压工艺

Circle punching transforms aluminum strip into round blanks for cookware, spinning and stamping applications.

Key Process Parameters

  • Circle diameter: Ø80–400 mm
  • Strip thickness: 0.8–5.0 mm
  • Press speed: up to 120 strokes/min
  • Material yield: 82–90%
  • Edge burr: ≤0.05 mm
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Circle Punching process
Full Integration

Complete Process Overview

01
Aluminum Melting
铝熔炼
02
DC Casting
半连续铸造
03
Homogenizing
均匀化处理
04
Continuous Casting
连续铸造
05
Hot & Cold Rolling
冷热轧制
06
Extrusion
铝挤压
07
Annealing
退火
08
Slitting
铝带分条
09
Circle Punching
铝圆片冲压

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