What are the key technologies and application advantages of Screw Barrel For Extrusion Of Sections in plastic extrusion processing?

Screw Barrel For Extrusion Of Sections is one of the core components of plastic extruders, which directly affects the quality of extruded products, production efficiency and stable operation of equipment. The following will explore its key technologies and application advantages in plastic extrusion processing.

The key technical features of the screw barrel are its precise geometric structure design and material selection. In the plastic extrusion process, the screw barrel plays a key role in heating, melting and pushing solid plastic particles to the mold. The geometric structure design of its internal screw and outer barrel is very precise and is usually manufactured by advanced CNC processing technology. The coil structure, pitch, stirring area design of the screw need to be precisely controlled to ensure that the plastic material can be evenly heated and extruded during the extrusion process, thereby ensuring the accuracy and quality of the final product.

The screw barrel is made of high-strength alloy steel or special wear-resistant alloy material to ensure that it has good wear and corrosion resistance. During the extrusion process, plastic materials are subjected to high temperature, high pressure and friction, which puts extremely high demands on the surface material of the screw barrel. Therefore, common surface treatment methods include hard chrome plating, nitriding or ceramic coating to increase its surface hardness and wear resistance, extend service life and reduce maintenance costs.

The screw barrel also has optimized heat exchange capacity, and the temperature of the plastic material can be effectively controlled through the internal channel structure. In different extrusion processes, precise control of the temperature of the material is crucial for the appearance, mechanical properties and molding effect of the final product. The optimization of the screw barrel design enables it to heat and cool the plastic material quickly and evenly to meet the temperature control requirements under different extrusion requirements.

In practical applications, the design and manufacturing technology of the screw barrel are constantly innovating to adapt to different types and requirements of plastic extrusion processing. For example, for different plastic raw materials, such as polyethylene (PE), polypropylene (PP), polyvinyl chloride (PVC), etc., the pitch of the screw barrel, the design of the mixing zone and the processing capacity need to be adjusted to ensure the uniformity and stability of the plastic material during the extrusion process.