Materials: 38CrMoALA Nitride, 38CrMoALA ion nitride +Bimetallic alloy, 42CrMo ion nitride + chrome-plating
Diameter: φ15-φ300
Maximum length: ≤8000mm
L/D ratio:15-55
Technical Parameter:
Hardness After Hardening & Tempering: HB280-320
Nitride hardness: HRC58-68
Nitride layer depth:0.50-0.80mm
Nitride brittleness: Less than 2 level
Surface roughness: Ra 0.4μm
Linearity of screw: 0.015mm/m
Bimetallic layer depth: 2-3mm
Bimetallic hardness: HRC58-62
Hard-chrome plating hardness after nitride: ≥950HV
Chrome-plating layer depth: 0.03~0.05mm
Product classification:
According to different products the screw can be chosen: general type, pin type, barrier type, separation type, and gas-exhausting/vented type, etc.
Application: blow molding machine, Blowing film machine, Profile Extruder, Granules Extruder
