Pipe Efficient Extruder Screw Barrel

Product Introduction:

The principle of plastic pipe extrusion molding: after the plastic is added to the extruder barrel by the hopper, it is forced to the direction of the machine head by the thread with the rotation of the screw. Due to the resistance of the filter screen, the shunt plate and the head mold, coupled with the gradual reduction of the volume between threads, the forward material is under great pressure, and it is heated by the heat source of the barrel; In addition, when the plastic is subjected to compression, shearing, stirring and other forces in motion, the friction between the barrel and the screw and the friction between the plastic molecules will produce a lot of heat. As a result, the temperature of plastic in the barrel continues to rise, and its physical state gradually changes from glass state to high elastic state, and finally becomes viscous flow state, reaching complete plasticization. Because the screw has been stable rotation, the plasticizing good material equal pressure, equal amount from the head mold extrusion, into a certain form of plastic products. After cooling and shaping, the extrusion molding work is completed. The core component of the above process is the screw. The extrusion process on the screw includes six basic functions: feeding, conveying, compression, melting, mixing and exhaust. Obviously, feeding and conveying affect the output of the extruder, while compression, melting, mixing and exhaust directly affect the quality of the extruded products. The so-called quality here refers not only to whether the melting is complete, but also to whether the product is compressed compactness, whether the mixture is uniform and the product cannot have bubbles. This is the plasticizing quality.

Jed screw barrel material: 38CrMoAI chromium-molybdenum alloy, the surface is treated by tempering, nitriding, chrome plating, polishing and ultra-fine grinding process, with high yield, plasticizing ability and other characteristics.

Suitable for all thermoplastic PE, PP, PS, PVC, PA, PC, PU pipe extrusion.

Product shooting: