Single Screw Barrel For Pvc Pp Ldpe Hdpe Extrusion 

1)38CrMoAlA(JIS SACM645)

2)Cr12MOV(JIS SKD-11)
3)4Cr5MoSiV1(JIS SKD-61) 4)42CrMo(AISI 4140)

5)9Cr18MoV

1)Fe-based alloy

2)Ni-based alloy/Deloro alloy
3)Co-based alloy

4)NiCo-based alloy
5)Tungsten Carbide/Wolfram carbide

Level A - containing Tungsten of 40%

Level B - containing tungsten of 25%

Level C - containing tungsten of 9.5%

Screw structure and compression   

ratio can be designed according

to different products  & different

clamping force requirement.

1)Longer time Gas Nitriding treatment

2)special anti-wear & abrasion alloy (bimetallic)

3)tungsten carbide

4)cobalt base alloy

5)stainless steel

6)Gh113 nickel based alloy

Treatment

Nitriding treatment(>100 Hours)

Depth of Nitrided Layer: 0.5-0.8 mm

Hardness of Nitrided Layer: >950Hv

Hard Chrome Plating treatment:

Thickness of Hard Chrome Plating Layer: 0.03-0.08mm

Hardness of Hard Chrome Plating Layer: ≥950HV

Nickel alloy plating.treatment:

Bimetallic Barrel Centrifugal Casting (Inlay Alloy)

Bimetallic Screw: Plasma Alloy Coating Spraying

Depth of Bimetallic Layer: >2mm

Hardness of Bimetallic Layer: HRC55°-65°

1)General Plastics

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

3)PA + GF(Glass Fiber)

4)Flame-resistant Reinforced Plastics

5)Modified Engineering Plastics

6)All kinds of Mixed Recycled Material(in Scrap or Granule),etc

Surface Roughness :Ra0.4um

Linearity of the screw: ≤0.015mm

Linear axis limit: ≤0.02mm

Hardness after Hardening & Tempering: HB260-300

Fragility of Nitration:≤Two grade

Means of transport: Ocean,Air,Express

Production time: About 30days after we receive the deposit and lead time will different according to the order quantity.

1-3years(Depends on the plastic raw materials)

Bimetallic: much longer lifetime.

1.Long lifetime,low energy consumption.

2.Wonderful plasticizing

3. Top-quality Bimetallic Screw And Barrel

4. High wear resistance, resistance to corrosion

5. Fast and On time delivery

6. Best customer after-sale service!