Screw And Barrel For Plastic Extruder / Extruding Machine Single Screw Double Screw
Product Description
a. Advanced Nitriding Technology .
b. Anti-corrosion and Wear-resisting Duplex Metal Spraying Technology .
c. we uses special alloy powders being sprayed and welded on the screw's ridge,and uses different alloy and welding methods for the screw of different functions .
Specification
screw diameter | Φ20-Φ200mm |
Maximum screw length | 7600mm |
Barrel inner bore diameter | Max Φ200mm |
Materail | A. 38crmoala in high quality B. alloy steel in high quality |
Technology | A. nitriding treatment B. alloy coating spraying C. heating treatment D. screw fully hardening E. vacuum quenching F: electroplate hard chrome |
Technical parameter | A: depth of nitrition layer: 0.6-0.8mm B: nitriding treatment for 7 day and night, surface hardness HV>900 C: fragility of nitriding: less than grade 1 D: surface roughness: ra0.4um E: streightness of screw: 0.015mm F: depth of bimetallic layer>2mm G: hardness of alloy platig: HRC 62-72 H: surface of hardness of chrome coating layer: HRC 62-72 I: thickness of chrome coating layer: 0.03-0.06mm |