Screw and barrel
We can supply and design all kinds of Single Screw & Barrel For Plastic Extruder Machine according to your requirement. We use Japan numerical control and computer control processing device to process screw.
Key words: Screw and barrel; Screw and barrel for injection screw and barrel for extruder.

Single screw and barrel; Twin screw and barrel; Conical screw and barrel; Parallel screw and barrel; Bimetallic screw and barrel; Rebuilding screw and barrel; Rubber screw and barrel.

Material: 38CrMoAIA 40CrMo 42CrMo alloy steel
Technology: Nitriding treatment, alloy coating spraying, heating treating, screw fully hardening.

Screw and barrel for extrusion
Hardness of Cr coating layer: HRC55-62
Thickness of alloy plating: 0.03-0.08mm
Depth of alloy layer: 2mm
Depth of nitrition layer: 0.5-0.8mm

Screw and barrel
Nitriding treatment surface hardness: HV>=900-1000
Fragility of nitrition: Less and grade 1
Surface roughness: Ra 0.4um
Streightness of screw: 0.015mm
Surface of hardness of nitrated Cr Coating layer: >=950HV
Screw and barrel for extrusion.