Studying the effects of the bearing length on the surface roughness and extrusion pressure of extruded aluminum alloy bar

Abstract

Bearing length is an important parameter affecting the surface
roughness of the product. On the other hand, the bearing length
affects the extrusion pressure, thereby affecting the life of the die.
Increased extrusion pressure reduces the life of the die and vice versa.
Determining the relationship between surface roughness, extrusion
pressure and the bearing length will consequently find out the
appropriate bearing length, ensuring the surface roughness in
accordance with the technical requirements of the product, while
reducing the extrusion pressure to increase the life of the die. Through
theory and practice, the author develops the regression function of the
relationship between surface roughness, extrusion pressure and
bearing length.The result of this research is the basis for designing the
appropriate bearing length to ensure the surface roughness and reduce
the extrusion pressure when extruding the aluminum alloy bars.