1. Check whether the oil pressure system is leaking and the air pressure is normal.
2. Check whether the conveyor belt, cooling bed, and storage table are damaged or scratched.
3. Confirm the length of the aluminum profile before stretching
aluminum extrusion manufacturer. At the predetermined stretch rate, that is, the main chuck moving position, the 6063T5 stretch rate is usually 0.5%-1%, and the 6061T6 stretch rate is 0.8%-1.5%.
4. Confirm the clamping method according to the shape of the aluminum profile. The large section hollow profile can be inserted into the stretch cushion, but as much as possible, ensure a sufficient clamping area.
5. When the aluminum profile is cooled to below 50 degrees, the profile can be stretched.
6. When the profile has both bending and twisting, the twisting should be corrected first and then stretched.
7. Perform a pull test on the first and second heels to confirm whether the predetermined stretch rate and clamping method are appropriate. Visually bend, twist, check the plane gap, flaring, and parallel of the profile. If it is not suitable, adjust the stretch rate appropriately.
8. When the normal stretching rate still cannot eliminate the bending, twisting, or the geometric dimensions are not qualified, the operator should be notified to stop the extrusion.
