How to prevent bending and wave defects in aluminum alloy products during extrusion?

Bending and wave: Deviations in the shape and position of aluminum alloy products along the length direction that do not meet the requirements of drawings and technical conditions.

1. Causes of bending and wave in extruded aluminum profile products:
   

(1) Inadequate mold hole design;

(2) Inappropriate or missing guide rails;

(3) Inadequate mold lubrication;

(4) Inappropriate extrusion speed;

(5) Too low quenching temperature.

Methods to eliminate bending and wave in extruded aluminum profile products:

(1) Improve the level of aluminum alloy mold design and 

manufacturing;

(2) Install appropriate guide rails and traction during extrusion;

(3) Adjust metal flow rate using local lubrication, modifying the mold to add a guide, or changing the design of the splitter hole;

(4) Reasonably regulate the extrusion temperature and speed to ensure uniform deformation;

(5) Appropriately increase the quenching temperature.