bimetallic parallel
Double Screw And Barrel 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. 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. We can manufacture all types of screws and barrels according to clients' requirement.
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 |