Ni-base bimetallic screw for PP.PE,PVC extrusion machine
Specifications
Specifications
bimetallic twin screw
1.Advanced Nitriding Technology
2.Wear resistant&Corrosion resistant
3.Techinical supports
1.Advanced Nitriding Technology
2.Wear resistant&Corrosion resistant
3.Techinical supports
bimetallic twin screw for extruder machines
Standard specification:
Φ45/2, Φ60/2, Φ65/2, Φ70/2, Φ72/2, Φ75/2, Φ80/2, Φ85/2, Φ90/2, Φ93/2, Φ100/2, Φ105/2, Φ110/2, Φ115/2, Φ120/2, Φ125/2, Φ130/2, Φ140/2, Φ150/2, Φ160/2, Φ170/2, Φ180/2, Φ190/2, Φ200/2, Φ250/2
We also can customize according to clients' requirement.
Screw structure and compression ratio can be designed according to different products and raw material.
Bimetallic screw: Base material 38CrMoAlA, sprayed alloy powder on the screw flight, prolong life of screw.
Bimetallic barrel: Base material 40Cr, melt-casting a 2-5mm wear resistant and corrosion resistant bimetallic layer
on the barrel inner wall, so it has much longer using life than nitrided barrel.
Base Materials: | 1)38CrMoAlA(SACM 645) 2)40Cr |
Bimetallic Alloy Materials: | 1)Fe-based alloy 2)Ni-based alloy 3)Co-based alloy 4)Tungsten carbide |
Processing Technology: | Heat treatment High-frequency quenching Nitriding treatment Hard-chrome electroplating Bimetallic alloy welding Bimetallic alloy centrifugal casting |
Technical Parameter: | Nitrided layer depth:0.50-0.80mm Nitrided hardness: 900-1100HV Nitrided brittleness: Less than 2 level Surface roughness: Ra 0.4 Linearity of screw: 0.015mm Chrome plating hardness after nitriding: ≥950HV Chrome-plating layer depth: 0.025~0.10mm Bimetallic layer depth: 2 mm Bimetallic hardness: HRC50-65 |
We can manufacture all types of screws and barrels according to clients' requirement.
Products display:
Conical twin screw and barrel
Bimetallic screws