Parallel twin-screw extruder is an important equipment […]
Parallel twin-screw extruder is an important equipment in plastic processing machinery. It is not only suitable for extrusion molding and mixing processing of polymer materials, but its use has been expanded to food, feed, electrodes, explosives, and building materials. , Packaging, pulp, ceramics, chemicals, LED materials and other fields.
The high speed of the extruder screw also brings a series of difficulties that need to be overcome: if the residence time of the material in the screw is reduced, it will cause uneven mixing and plasticization of the material, and the material subjected to excessive shear may cause the material to rise rapidly and thermally Difficulty in stability control will cause fluctuations in the geometric dimensions of the extrudate. The accuracy of related auxiliary devices and control systems must be improved. The increased wear of the screw and barrel requires the use of highly wear-resistant and ultra-high wear-resistant materials. How to improve its life under operating conditions and other issues need to be solved
Yongrui Machinery's screw element/barrel product is the main component of the twin-screw machine, which is a combination of barrel/screw element. The threaded element is composed of a threaded sleeve and a kneading block. Tungsten carbide threaded elements/barrels are our patented products with independent intellectual property rights. The product base blank is 45# carbon steel, and the wear-resistant and corrosion-resistant functional layer is nickel-based tungsten carbide, which is a new product of new technology, new process and new material.
Nickel-based tungsten carbide threaded elements (WC alloy) are mainly used in twin-screw extruders. It is the main fragile and consumable part of twin screw machinery. Tungsten carbide threaded elements are suitable for use in the extrusion (granulation) machine industry for the production of modified plastics with large additions of glass fiber, nylon, and calcium carbonate.
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