How Aluminium Disc Is Produced: Rolling, Cutting, Finishing Process | Top Metal

Step 1: Raw Material Melting & Rolling (Core Foundation)

1. Hot rolling: Slabs are heated to high temperature and repeatedly pressed by hot rolling mills to form wide aluminum coils. This step eliminates internal metal stress and improves ductility for later deep drawing.
2. Cold rolling: After cooling, hot rolled coils enter cold rolling lines to control precise thickness from 0.15mm to 10mm. Multiple rolling passes ensure tight thickness tolerance, a critical standard for premium aluminium disc. After rolling, coils will be annealed to O soft temper or processed into H hard temper as customer requests.

Step 2: Precision Cutting & Blanking

Step 3: Surface Finishing & Quality Inspection

1. Deburring: Mechanical polishing removes tiny edge burrs generated during cutting.
2. Surface cleaning: Degreasing and washing clear oil stains and oxide dust on disc surface.
3. Flatness calibration: Warped discs are leveled by flattening machines to reach high flatness standard.
   The final link is strict full inspection: workers test thickness, diameter, surface smoothness and mechanical properties. Defective products are picked out, while qualified aluminium discs are packed with waterproof film for sea transportation.

Why Our Production Process Matters For Buyers