90mm nitrided single extruder screw barrel for plastic extruder machine

Base Material

1) 38CrMoAlA(JIS SACM645) 2)Cr12MOV(JIS SKD-11)

3) 4Cr5MoSiV1(JIS SKD-61) 4) 42CrMo(AISI 4140)

Bimetallic Alloy Material

1)Fe-based alloy 2)Ni-based alloy/Deloro alloy

3)Co-based alloy 4)NiCo-based alloy

5)Tungsten carbide/Wolfram carbide

Double-alloy Level

Level A-containing Tungsten of 40%

Level B-containing Tungsten of 25%

Level C-containing Tungsten of 9.5%

Surface Treatment

1.Heat treatment

2.High frequency treatment

3.Nitriding treatment

Nitrided case depth: 0.50-0.80mm

Nitrided hardness: HV850-1020 (HRC57-65)

4.Hard chrome plating treatment

Chromium-plating layer depth: 0.05-0.10mm

Chromium-plating layer hardness: more than 950HV

5Nickel alloy plating treatment

Bimetallic barrel: centrifugal casting (Inlay alloy)

Bimetallic screw: plasma alloy coating spraying

Bimetallic layer depth: 0.8-2.0mm

Bimetallic layer hardness: HRC 57-72

Basic Information

Nitride Brittleness

≤Grade Two

Surface Roughness

Ra0.4um

Screw Straightness

0.015mm

Material Application

1)General plastics

2)ABS,PA,PC,PE,PET,PS,PU,PVC,U-PVC

3) PA+GF (Glass Fiber)

4)Flame-resistant reinforced plastics

5)Modified engineering plastics

6)All kinds of mixed recycled materials

General Terms

Means of transport: Ocean, Air, Express

Production time: 25 days after order