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Screw for ExtrusionModify Date : 2018-11-22 15:08:51
▣ Screw for Extrusion
 Screw Overview for Extrusion In order to stably form high quality products, SCREW suitable for the characteristics of resin and products is needed. It is important to examine the SCREW design, such as various L / D and CR values, to solve the two problems of increasing discharge volume and sufficient kneading. In particular, the design of the mixing section is the key point in problem solving. The extruder needs to be designed with a more suitable screw design due to various water support and molding type. However, the design of screw design is difficult and there are many factors that cannot be interpreted theoretically. KCS meets the requirements of previous years' performance and experience. Key Points of SCREW for Extruder Discharge amount (unit time capacity) Stability (kneading spray, heat stability, meltability, durability) Physical property (mechanical property)
Design points ability The center point of the required design portion (measurement portion) is determined as a design value whether the required discharge amount is possible in volume (screw diameter and rotational speed). design When the centripetal point is determined by the above capacity, a compression ratio suitable for the resin is set, and the centripetal point of the supply unit is determined. Set the three zone lengths of the whole screw side respectively. Although these three zones generally have certain laws, they are set in consideration of L / D, length, and resin type. In particular, the length of the compression zone should be calculated by the physical properties of the resin whether it is a rapid compression taper or a slow compression taper. effect Extruders are the first to ask about capacity, but the effect on the capacity of the calculation theory is estimated by the type of resin, especially the viscosity (MI value).
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