Manufacturing Process Procedure 

for T-Slot Aluminum Profile 6063 Grade with Anodizing Finish.

1. Raw Material Selection

• Select 6063 aluminium alloy billets with the required chemical composition as per ASTM B221.

• Ensure billets are free from impurities and defects.

2. Preheating

• Heat the aluminium billets in a homogenising furnace at 450–500°C to improve extrusion quality for 3–4 hours.

• Allow billets to cool before loading onto the extrusion press.

3. Extrusion Process

• Load preheated billets into the extrusion press.

• Use a T-slot aluminium profile die to meet the required dimensions and tolerances.

• Extrude aluminium through the die at a temperature range of 480–520°C.

• Ensure proper lubrication and cooling during the process.

• Use a puller and stretcher to maintain straightness and remove internal stresses.

4. T6 Heat Treatment 

• Solution Treatment: Heat the extruded profiles to 530–560°C for sufficient time to dissolve alloying elements.

• Quenching: Rapidly cool the profiles using air or water spray to retain the dissolved elements.

• Ageing Process: Age the profiles at 160–180°C for 6–8 hours to achieve T6 hardness.

5. Precision Cutting & Machining

• Cut extruded profiles to the required lengths using CNC cutting machines.

• Perform any additional machining, such as drilling, tapping, or slot cutting, as per customer specifications.

6. Surface Pre-Treatment for Anodizing

• Clean the aluminum profiles using an alkaline or acid-based degreasing solution to remove dirt and oxides.

• Rinse thoroughly in deionized water to prevent contamination.

7. Anodizing Process

• Immerse the profiles in an electrolytic bath (sulfuric acid-based) at 18–22°C.

• Apply DC to achieve an anodised layer thickness of 10–25 microns, depending on the application.

• Rinse and neutralise the profiles to remove acid residues.

8. Quality Inspection

• Conduct dimensional checks using callipers, micrometres, 

• Verify anodizing thickness using an eddy current thickness gauge.

9. Packing & Dispatch

• Protect profiles with plastic wrapping, foam, or paper interleaving to prevent scratches.

• Bundle profiles securely using wooden crates or cardboard boxes for safe transportation.

• Label each batch with product specifications, batch number, and anodising details.

9. Final Documentation & Shipping

• Dispatch profiles as per customer requirements with necessary transportation documentation.

This procedure ensures high-quality T-slot aluminium profiles with a durable anodised finish suitable for industrial and structural applications.