Conical Bimetallic Twin Screw & Barrel 

Conical Twin Screw Barrel/Technical parameter

Hardness of Nitriding

HV960~1060

Deepness of Nitriding Layer

0.5~0.8mm

Nitriding Brittleness

0.045mm

Screw Alignment

0.015mm

Nitriding Brittleness

≤Grade 1

Thickness of Chrome Plating Coating

0.03~0.08mm

Quenching and Tempering Hardness

HB240~280

Hardness of Chrome Plating Coating after Nitriding

≥980HV

Deepness of Bimetallic Alloy

1.5~3.5mm

Hardness of Bimetallic Alloy

HRC55-62

Thickness of Tungsten Carbide Layer

1.0~2.5mm

Hardness of Tungsten Carbide Layer

HRC58-70

Deepness of Titanizing Layer

0.05~0.10mm