What is extrusion in metal work?
What is extrusion in metal work?
Metal extrusion is a forming process in which we force a metal (either hot or cold) through a die. This imparts the die shape to the extruded metal as it passes through the cavity. The material emerging from the die is known as “extrudate”. The metal endures compressive and shear stress to achieve the die shape.
What metals are used in metal extrusion?
The most commonly extruded materials are Aluminium, Copper, Steel, Magnesium, and Lead. Plastics and ceramics are also extruded extensively but not discussed in this article.
How is extrusion classified?
Extrusion is classified in general into four types. They are: Direct extrusion, indirect extrusion, impact extrusion and hydrostatic extrusion. In extrusion process, the billet is placed in a container, pushed through the die opening using a ram and dummy block. Both ram and billet move.
What is the most common metal used in extrusion?
Aluminum
Aluminum. Manufacturers can extrude aluminum—the most frequently extruded material—using either the hot or cold methods. Extruded aluminum can be fabricated, painted, and anodized, and it produces complex cross-sections with aesthetically pleasing surface finishes.
What is extruding engineering?
Extrusion is a technique where molten polymer is forced through a die and is used to produce components of a fixed cross-sectional area such as tubes and rods. From: Biomaterials, Artificial Organs and Tissue Engineering, 2005.
What are the types of extrusion?
There are different types of extrusion processes, however, including cold, hot, friction and micro.
What is extrusion and its different types?
Extrusion is a manufacturing process that involves forcing base metal through a pre-shaped die to create objects with a specific shape and profile. As the metal passes through the die, it’s shape changes to reflect the die’s shape.
Which material is suitable for extrusion process?
Commonly extruded materials include metals, polymers, ceramics, concrete, modelling clay, and foodstuffs. Products of extrusion are generally called extrudates….Hot extrusion.
| Material | Temperature [°C (°F)] |
|---|---|
| Magnesium | 350–450 (650–850) |
| Aluminium | 350–500 (650–900) |
| Copper | 600–1100 (1200–2000) |
| Steel | 1200–1300 (2200–2400) |
Why is metal extrusion used?
Extrusion is a metal forming process in which metal or work piece is forced to flow through a die to reduce its cross section or convert it into desire shape. This process is extensively used in pipes and steel rods manufacturing. The force used to extrude the work piece is compressive in nature.
