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Screw and Barrel for Recycling Machine manufacturers teach you how to solve the stuck phenomenon of screw and barrel of extruder
Screw and Barrel for Recycling Machine manufacturers tell you that during extrusion production, the extruder screw barrel may suddenly get stuck. At this point, if the extruder maintenance installation does not work, the operator should immediately stop the machine. More commonly, the screw still spins, but at a slower rate, with a screeching metal scratching sound. The current has risen sharply and the operator should stop immediately.
The reason: a foreign body got into the barrel and blocked the screw. Screw and Barrel for Recycling Machine manufacturers tell you that if it is a ferrous metal foreign matter, it will cause great damage to the screw barrel of the extruder. Screw or barrel deformation 3: The barrel temperature is too low, or the filter plate is blocked, causing the barrel pressure to rise sharply, resulting in screw deformation. The screw and barrel design is unreasonable, and the screw design compression ratio is too large, which may easily cause the screw to deform during use.
The thermal shrinkage coefficient of the material used for the extruder screw barrel is too large. When the barrel is heated, the barrel is cooled, and if the screw is not cooled, it may be locked. Injection screw at high temperature? high pressure? Long-term operation under high mechanical torque and high friction environment. Screw and Barrel for Recycling Machine manufacturers tell you that the screw barrel process conditions require the first few elements, and the loss caused by friction is unavoidable.
Typically, screws have been surface nitrided to increase surface hardness, ie, to improve wear resistance. However, if the cause of wear is ignored and the wear is not minimized as much as possible, the service life of the screw will inevitably be greatly reduced. Screw and Barrel for Recycling Machine manufacturers tell you that each plastic screw barrel has an ideal plasticizing temperature range, and the barrel processing temperature should be controlled to be close to this temperature range. When the granular plastic enters the barrel from the hopper, it will first reach the feeding section.