Technical index

Production purpose: chemical fiber machinery

Screw diameter: φ 5 - φ 300

Length diameter ratio: L / D = 15-46

Surface roughness: RA 0.4um

Nitriding brittleness: secondary brittleness

Thickness of chromium plating layer: 0.05-0.10 mm

Hardness of chromium plating layer: HV > 850

Depth of alloy layer: 1.2-2.5mm

Hardness of alloy layer: HRC > 65

Nitriding depth: 0.5mm-0.8mm

Straightness: 0.015mm-1000mm

Material composition: sacm-645, scm440, 38CrMoAlA

Scope of application:

General plastics, PA, PP, PC, PE, ABS, as, PS, PVC, PMMA, LCP, PBT, pet, PPC, PPS, par, Po, magnetic powder, ceramic powder, aluminum magnesium powder, iron powder, bakelite powder and other engineering plastics.