Indirect Extrusion Advantages And Disadvantages

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Extrusion

Extrusion is a compressive and deformation process. The process entails squeezing a block of material such as Aluminium, forcing it through a die. The die has a job of reducing it’s diameter and increasing it’s length. This method results in a constant cross-sectional cut and a desired shape. The process of extrusion is mainly used in situations where the material can’t be hammered or bended due to their specific properties such as being too soft or too brittle. The common materials that can be extruded include metals such as Aluminium, Copper, Lead and steel, plastics, ceramics and concrete. The method of extrusion can be either semi-continuous or continuous.

Brief history of extrusion:

In 1797, an Englishman named Joseph Bramah …show more content…

This is because in indirect extrusion the cross-sectional area is restricted by both the volume and area of the stem’s biggest size. In Direct extrusion, the extruded material’s surface is affected by defects and impurities. Therefore this downfall must only be eliminated by having the billet chemically cleaned and wired brushed.

Advantages of hydrostatic extrusion

One advantage of using hydrostatic extrusion due to the fact that the process does leave behind billet residue on the walls of the container. Between the container and the billet, friction does not exist, this is a major advantage as lowers the amount of force needed. It also advantageous because the temperature required for the billets is much less, which in turn makes it a more economically viable process. The process, when operated at high pressures, results in the increase of ductility of the material. This is advantageous as more brittle materials can also undergo the extrusion

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