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Fe-Base Alloy Screw and Barrel manufacturers take you to understand the common materials of extruder screws
Fe-Base Alloy Screw and Barrel manufacturers tell you that the extruder barrel screw is a molding processing method with many types of production, many changes, high production rate, strong adaptability, universal use, and a large proportion of output in the field of polymer processing. It has easy control, simple process control, good mixing and plasticizing ability, short residence time of materials in the extruder, suitable for powder processing, large output, fast extrusion speed, and low output and energy consumption.
However, in daily use, a large number of customers will encounter the slippage of the extruder barrel and screw, which will not only cause material degradation, but also easily affect the product quality. So what are the reasons for this phenomenon and what are the "culprits"? Fe-Base Alloy Screw and Barrel manufacturers tell you that before that, let everyone understand the common materials of extruder screws, so as to better understand the reasons for slippage.
Fe-Base Alloy Screw and Barrel manufacturers tell you that there are many reasons for screw slippage, which may be related to poor material, high back pressure, overheating or undercooling at the end of the barrel, wear of the barrel or screw, too shallow thread in the feeding section, and hopper. Unreasonable design and factors such as hopper clogged, resin wet, resin too smooth, material too fine or unreasonable cutting of resin and recycled material are related.
Fe-Base Alloy Screw and Barrel manufacturers tell you that when the screw slips, the material may collect at the feeding port and cannot be conveyed to the end of the injection machine normally. When the screw rotates and retreats in the barrel to transport the material and prepare for the next injection, screw slip occurs in the plasticizing section. At this time, the rotation of the screw continues, but the axial movement of the screw will stop, that is, slippage occurs. Fe-Base Alloy Screw and Barrel manufacturers tell you that screw slippage often leads to material degradation before injection, resulting in decreased production quality (such as material shortage), and extended molding cycle.