Single screw barrel for PPR HDPE pipe extruder 

Technical Information Main Base materials 1.38CrMoAlA (SACM645) Main Alloy Materials 1. Ni-based alloy/Deloro alloy Processing Technics 1. Heat treatment Technical parameters Nitriding layer depth: 0.5-0.8mm 2. Quenching Nitrided hardness: 900-1000HV 3. Nitriding treatment Bimetallic layer depth: 0.8-2 mm 4. Bimetallic alloy welding for screw Bimetallic hardness: 57~65HRC 5. Bimetallic alloy centrifugal casting for barrel Hard-chrome plating hardness after nitriding: ≥950HV 6. Hard-chrome electroplating Chrome-plating layer depth:0.03-0.09mm Linearity of screw: 0.015mm Surface roughness: Ra 0.4             &nbs…