Screw Elements for Buss Twin Screw Extruder 3-Flighted Screw Elements

1 . Introduction :

3-flighted screw element can give raw material a higher average shear rate and shear force under the same screw rotation speed , because of the shallow screw groove , thin material layer , three head is better than two head in heat transfer , and is good for raw material plasticizing , melting . But because of strong shear force , 3-flighted screw element is generally not suggested to shear sensitive material , such as glass fiber , PVC , etc .

2.Machining range and feature :

a . All the materials are purchased from the domestic brands or European twin-screw specialty materials suppliers , which tested by material analysis and metallurgical inspections to ensure the quality ;

b . The internal splines is checked by the spline plug to ensure interchangeability of components;

c . All components are machined by CNC machines to ensure the shapes and tolerances of the elements;

d . Adopt the European high-speed steel powder processing technology , and do the treatment according to the strict heat treatment process to ensure the wear and corrosion performance same as the foreign brands ;

e . Professional technical team can not only provide timely and accurate mapping sample design but also the combination of elements of technical services ;

f . There are various prepared technical information and the fitxtures for the various brands extruders to ensure the timely lead time . The common components have a lot of stock , even the new one , it can be delivered within 45 days.

g . The modern management system can ensure the products 100% qualified and tracked .

3 . Application of the screw configuration :

screw configuration :

means a structure are composed of different combinations to achieve the desired performance , such as disperse , shear effect , solving the requirements of mixed materials as well as the production stability .

Depending on the nature of work being carried out , there are intake zone , conveying zone , melting zone , natural venting zone , mixing zone , vacuum venting zone and matering zone .

Different screw element own different features in different extrusion process , we should choose and design the right screw elements based on different extrusion staus in order to optimize the overall comprehensive performance in the extrusion process.

Sichuan Advance technology Co.,ltd(is dedicate to develop and manufacture co-rotation, counter-rotation parallel twin-screw extruder production line.We'll exhibit two types twin screw extruders, high torque(Nm/cm3>13).

We integrate and upgrade these experiences to create our own transmission concept and form our core technology “bilateral gear symmetrical driving system”. The technology enables our extruders have the advantages of “high torque, high efficiency, low energy-consumption, high price/performance ratio, long service life ” (designed service life of gearbox as long as 72000 hrs). We keep the same step with the most advanced extruder manufaturers in the world.

We can supply ：Co-rotation twin screw extruder production line;

High torque gearbox;Automatic long fiber reinforced thermoplastic composites (LFT - D) production line;Counter-rotation parallel twin screw extruder;Differential concentration mixer;

Repairing and machining large parts; Design, machine all of screw elements on Japan and Germany extruders.