Suulakepuristus

Suulakepuristus, also known as extrusion, is a manufacturing process used to create objects with a fixed cross-sectional profile. This is achieved by forcing a material through a die of the desired cross-section. The material is typically heated to a semi-solid state, making it pliable and easier to extrude. Common materials processed this way include metals, plastics, and composites.

The extrusion process begins with preparing the material, which is often in the form of pellets or a solid billet. This material is then heated and fed into an extrusion press. Within the press, a ram or screw mechanism applies pressure, forcing the heated material through the die. As the material exits the die, it cools and solidifies, retaining the shape of the die opening. The resulting extrudate can then be cut to desired lengths or further processed.

There are two primary types of extrusion: direct and indirect. In direct extrusion, a ram pushes the material through the die, and the ram and the container holding the material move in the same direction. In indirect extrusion, the die is fixed to a moving hollow ram, and the material is pushed through the die as the ram moves in the opposite direction to the material flow. This can reduce friction and allow for larger extrusions.

Suulakepuristus is valued for its ability to produce long, continuous products with consistent cross-sections, such as pipes, rods, window frames, and various plastic profiles. The process is efficient and can achieve tight tolerances, making it suitable for mass production.