Principle of extrusion of aluminum profiles ：Aluminum extrusion is a plastic processing method that applies external force to a metal blank placed in a container (extrusion cylinder) to make it flow out from a specific die hole to obtain the desired cross-sectional shape and size.
Second, the composition of aluminum extrusion press.
The aluminum extrusion machine is composed of a machine base, a front column frame, a tension column, an extrusion cylinder, and a hydraulic system under electrical control.
Third, the classification of aluminum extrusion methods.
According to the type of metal in the aluminum extrusion cylinder, the state of stress and strain, the extrusion direction of the aluminum extrusion, the lubrication state, the extrusion temperature, the extrusion speed, the type or structure of the tool, the shape or number of the billet, the shape of the product Or the number, etc., can be divided into forward extrusion method, reverse extrusion method, (including plane deformation extrusion, axisymmetric deformation extrusion, general three-dimensional deformation extrusion) lateral extrusion method, glass lubrication extrusion method, hydrostatic extrusion method, continuous extrusion method, etc.
Most of the hot-deformed aluminum production enterprises use the forward hot-deformation extrusion method to obtain aluminum with the required cross-sectional shape through a specific mold (flat die, cone die, split die). The only aluminum production method adopted!
The forward extrusion process is simple, the equipment requirements are not high, the metal deformation capacity is high, the production range is wide, the aluminum performance is highly controllable, the production flexibility is large, and the tooling and die are easy to maintain and correct.
The defect is that the friction between the inner surface of the extrusion cylinder and the aluminum material is strong, which accounts for a large proportion of the extrusion energy consumption. The friction is easy to make the ingot in the cylinder heat.