Aluminum extrusion is the heated aluminum bar loaded into the extrusion cylinder, through the extruder to apply pressure, so that it is extruded from a given shape and size of the die hole, resulting in plastic deformation and obtain the required product processing methods. Due to the metal in the deformation process by the temperature of the aluminum bar, extrusion speed, deformation, die and other factors, the uniformity of the metal outflow is more difficult to control, to the die design has brought about a certain degree of difficulty.
In order to ensure the strength of the mold, to avoid cracks, collapse, collapse angle, etc., in the profile cross-section design should try to avoid: large cantilever, small openings, small holes, multiple holes, asymmetric, thin-walled, uneven wall thickness and other cross-section shapes. In the design, first of all to meet its use, decorative performance, and so on, the cross-section obtained from this design can be used, but not the best program.
Because when the designers lack of extrusion process knowledge, do not understand the relevant process equipment, there will be production process requirements are too high, too strict, resulting in lower pass rate, higher costs, and even the existing process can not be produced. Therefore, the principle of aluminum profile section design is: to meet its functional design under the premise of the simplest possible process to complete.