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Product Description
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Materials & Properties
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Processing. Knowhow
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Product Description:
· Double-flight screw elements, also referred to as double screws, are widely used in modern co-rotating twin-screw compounding extruders, constituting approximately more than 70% of the components. Characterized by an olive-shaped cross-section, these double-flight large-lead screw sleeve elements find common application in both the screw feeding section and exhaust section , typically handling materials at less than full capacity. Conversely, small-lead screw elements are predominantly utilized to pressurize or adjust the spacing of kneading blocks, thereby enhancing residence time to expedite the melting of modified materials. This configuration may facilitate the arrangement of a more optimal screw configuration, resulting in modified finished particles exhibiting more favorable physical and mechanical properties.;
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Materials & Properties:
Material Description Nitrided steel(38CrMoAlA): Nitriding treatment, high hardness and corrosion resistance, suitable for common conditions
High-speed tool steel(W6Mo5Cr4V2): Vacuum quenching, overall hardening screw elements, high wear resistance, strong toughness, used in glass fiber reinforced,high filling and so on; Stainless(316): Used in anti-corrosion, anti-rust and food conditions; Hastelloy alloy: Nickel-based alloy, mainly used in the processing of fluorine plastics; Others: WR5,WR13,WR14, ETC., Processing range：φ20 mm ~φ175 mm, only for Twin Screw Extruder.
· All internal splines of screw elements are manufactured according to GB or DIN standards.
Structure:
SCREW ELEMENT
Data：
1、Diameter of screw element (include: outer diameter & root diameter of tscrew element); 2、The pitch of screw element and the picture of that; 3、Number of internal spline teeth (top diameter and root diameter); 4、The brand of twin screw extruder;5、 the type of extruder;
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Processing. Knowhow:
· 1. All component materials are sourced from reputable material suppliers. To guarantee the quality of raw materials, we conduct both elemental and metallographic analyses;
· 2. Screw Elements are finished by CNC grinding;
· 3. The professional technical team can not only provide surveying and mapping business, but also provide technical services in component combination.
