Double screw extruder is a machine that can concentrate a series of basic chemical unit processes, such as solid conveying, pressurization, melting, exhaust, dehumidification, molten material conveying, and pumping, on the screw inside the extruder for operation. Compared with single screw extruders, it can provide more thorough mixing of the melt, making it more widely used.
After 500 hours of use, iron filings or other impurities may have been ground off the gears in the speed reducer. Therefore, the gears should be cleaned and the speed reducer lubricant should be replaced.
After a period of use, a comprehensive check of the extruder should be carried out, inspecting the tightness of all screws.
If there is a sudden power failure during production, causing the main drive and heating to stop, when power is restored, each section of the barrel must be reheated to the specified temperature and insulated for a period of time before starting the extruder.
If the instrument or pointer shows full scale, check whether the contact of the thermocouple wire and other wires is good.
As downstream application fields have increasingly high requirements for plastic performance, requiring it to have multiple properties such as high temperature resistance, hydrolysis resistance, and scratch resistance, this also forces upstream extruder manufacturers to have higher requirements for the process to meet the needs of customers.
With the increasing demand for innovative materials by the application end, compounding and modification enterprises also have new requirements for compounding equipment and processes. The three main indicators of the performance of double screw extruders are specific torque, volume rate, and screw speed.
Specific torque refers to the torque force of the screw on the material per cubic centimeter. With higher specific torque, the material has higher filling in the screw and the average shear force will decrease.
In summary, by preparing for ultra-high torque and high slot depth ratio to increase single-machine capacity, obtaining more process elastic space by increasing the slot depth ratio and torque of the equipment, reducing energy consumption by utilizing the high slot depth ratio while increasing output, dual economic benefits can be obtained.
Nanjing KY Chemical Machinery Co., Ltd. not only provides customers with first-class quality extruders, but also helps customers optimize the entire production system.
From material storage, drying, transportation, metering, mixing, to final product packaging, we provide customers with a factory-level intelligent control system, offering a complete set of high-reliability, cost-effective solutions. The application of double screws will also be expanded to industries such as fibers, films, and reactive extrusion. Welcome to consult us.
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