Screw: from 15 mm diameter-250 mm diameter

Screw length: from 300 mm to 8000 mm length

Barrel: from 40 mm to 400 mm outer diameter

L/D: 10-46

Technology details:

Screw:

1. General nitriding screw nitriding screw with (SACM645)

2. Tooth top spraying alloy welding double top gear spray-welding bimetallic screw

3. A complete coverage of tungsten steel screw

4. All the hard series screw scries: NPT1, NPT2, NOT3

5. Ceramic membrane surface formation, diamond film-screw surface on ceramic diamond

Barrel:

1. With ordinary nitriding nitriding barrel (SACM645)

2. The hole centrifugal casting alloy centrifugal casting bimetallic barrel (points) and the ABC

3. All the hard in series of barrel: NPT1, NPT2,NPT3.

Technology index

Surface hardness: HV: 290

Nitriding hardness: HV850-1000

Nitriding depth: 0.45 0.7 mm

Nitriding brittle: more than level 1

Screw the straightness: 0.015 mm

After nitriding chromium plating surface hardness: 900 HV:

Chromium plating thickness: 0.05 0.1 mm

Double alloy hardness: 60-70

Alloy depth: 0.8 2.0 mm