Key points for forging aluminum alloy flanges，Shandong Enlechi Forging Co., Ltd provide

1. Raw materials

Select qualified aluminum rods and conduct non-destructive testing without any defects; Cut off the material, chamfer and deburr, and remove the surface oxide skin and oil stains.

2. Heating

Accurate temperature control, strict control range (6 series 450-490 ℃, 7 series 380-420 ℃), to prevent overburning; Thick gradient preheating reduces temperature drop during transportation.

3. Mold

Preheat the mold to 300-380 ℃; Increase the transition fillet and divide it into pre forging and final forging; Spray water-based graphite lubrication.

4. Forging and Forming

Apply pressure at low speed with a hydraulic press, following the principle of light first and then heavy; Single pass small deformation, multi pass step-by-step forming; The final forging temperature shall not be lower than the lower limit, and the low temperature shall be immediately returned to the furnace; Ensure the integrity of metal flow lines.

5. Post forging treatment

Slow cooling of forgings to release stress; Perform T6 solid solution aging according to the brand to stabilize strength and size.

6. Defect prevention and control

Be alert to folding, cracking, and oxidation skin compression; Avoid extreme cold, heavy impact, and overheating throughout the entire process.