Extrusion

Metal extrusion is a manufacturing process used to create complex cross-sectional shapes by forcing a metal billet or a heated metal through a die or a series of dies. The material used in metal extrusion can vary depending on the application, but common metals include Aluminium, Copper, Steel, and Titanium.

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Extrusion

The size limitations of metal extrusion depend on various factors such as the material being extruded, the complexity of the shape, and the capabilities of the extrusion equipment.

The typical size limitations for metal extrusion are as follows

Minimum size

The minimum size is determined by the capabilities of the extrusion equipment and the ability to maintain the required structural integrity of the extruded part. This can vary but is typically around 1mm in diameter or thickness.

Maximum size

The maximum size is determined by the size of the extrusion press or equipment being used. Large extrusion presses can handle billets with diameters ranging from 50 to 600 mm and lengths up to 1800mm. However, these sizes are not typical and most extrusions fall within smaller size ranges.

Aspect ratio

The aspect ratio refers to the ratio of the length to the cross-sectional area of the extrusion. Higher aspect ratios are achievable with smaller cross-sectional areas, allowing for longer extrusions. However, as the aspect ratio increases, there may be challenges in maintaining dimensional tolerances and controlling the extrusion process.

Complexity

The complexity of the shape also affects the size limitations. Simple shapes with uniform cross-sections are easier to extrude compared to shapes with varying wall thicknesses, intricate designs, or internal features. These complex shapes may require additional processing steps or multiple extrusion operations.

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