Processing:

Quenching & Tempering → Rough Machining → pulling internal involute spline machine → Strand cutting→ Milling machine or lathe (Semi Finishing Machining) → CNC Machining center → CNC threadgrinder(Finish machining) → vacuum quenching → Inspection

Function:

Product name: the parallel twin-screws and barrel for extrude machine.

1. Screw Diameter: Φ22mm-Φ133mm

2. Material: 38CrMoAlA; 42 CrMoV; high quality alloy steel

3. Technology: nitriding treatment,Sprey conating Bimetallic , heat-treatment

4. Appliance: PP, PE, PA, PVC, PC, ABS, AS etc

Technical Index:

1. Depth of Nitrated Layer: 0.5-0.8mm

2. Hardness of nitration: 900-1020Hv

3. Fragility of nitration: Less than grade 1

4. Surface Hardness of Nitrated Cr coating layer: ≥950Hv

5. Hardness of Bimetallic Layer: HRC55°-72°

6. Thickness of Cr-coating Layer: 0.03-0.08mm

7. Depth of Bimetallic Layer: >2mm

Company introduction:

    NANJING HAISI EXTRUSION EQUIPMENT Co.,Ltd, is a High-Tech company, which is composed of well-experience team in R&D design, manufaturing technique, sales service and basing on extruder industry for many years.We are now mainly devoted to highly active single,twin screw and compounding extruders .

    Our production series contain single screw extruder, co-rotating twin-screw compounding extruder, auxiliary equipment etc.