Diameter: ¦Õ15-¦Õ500
L/D ratio:15-55
Technical Parameter:
Hardness After Hardening & Tempering:HB280-320
Nitrided hardness: 950-1100HV
Nitrided layer depth:0.50-0.80mm
Nitrided brittleness: Less than 2 level
Surface roughness: Ra 0.4¦Ìm
Linearity of screw: 0.015mm/m
Bimetallic layer depth: ¡Ý3mm
Bimetallic hardness: HRC60-72
Hard-chrome plating hardness after nitriding: ¡Ý950HV
Chrome-plating layer depth: 0.025~0.10mm
Product classification:
According to different ingredents and products the screw can be chosen: general type, pin type, barrier type, separation type, and gas-exhausting/vented type, etc. |