Bimetallic twin parallel screws and barrels

Parallel twin screw and barrel for twin screw extruder.

 

∅60/2,∅65/2,∅70/2,∅72/2,75/2,∅80/2,∅85/2,∅90/2,∅93/2,∅100/2,∅105/2,∅110/2,∅120/2,∅125/2,∅130/2,∅140/2,∅150/2,∅160/2,∅170/2,∅180/2,∅190/2,∅200/2,∅250/2

datails

 For good plasticizing effect, we have differnt design of screw barrel to meet customer's demand.

 

Scope of application: WPC, PVC, WPC PE, Super high molecular sheet, 1/2 high calcium buckle, 50-400% high calcuium pipe, 50-300% high calcium profile, soft PVC sheet, XPS - PVC etc, PE,PP, ABS, PVC, Pelletzing, pipe, profile, sheet etc...

 

Extruder Parallel Twin Screw Barrel Technical Information

 

Main Base materials

 

1.38CrMoAlA (SACM645)

 

Main Alloy Materials

 

1. Ni-based alloy/Deloro alloy

 

2. SKD-61 (Special Tool Steel)

 

2. Tungsten carbide/Wolfram carbide

 

3. 42CrMo (Ultrahigh StrengthSteel)

 

3. NiCo-based alloy

 

4. DC53 (Cold WorkDie Steel)

 

4. Fe-based alloy

 

5. W6Mo5Cr4V2 (High-SpeedToolSteel)

 

5. Co-based alloy

 

Processing Technics

 

1. Heat treatment

 

Technical parameters

 

Nitriding layer depth:0.5-0.8mm

 

2. Quenching

 

Nitrided hardness:800-1000HV

 

3. Nitriding treatment

 

Bimetallic layer depth:3 mm

 

4. Bimetallic alloy welding for screw

 

Bimetallic hardness:55~65HRC

 

5. Bimetallic alloy centrifugal casting for barrel

 

Hard-chrome plating hardness after nitriding:≥950HV

 

6. Hard-chrome electroplating

 

Chrome-plating layer depth:0.03-0.09mm

 

Linearity of screw:0.015mm

 

Surface roughness:Ra 0.4