Twin Parallel Screw Barrel, parallel twin screw barrel, bimetallic screw barrel, double screws barrel, plastic machinery components
Specifications
1. Twin parallel screw barrel
2.38CrMoAlA+ special alloy
3. Processed to drawing or to your request & raw material
Techincal Advantages of bimetal twin parallel screw barrel for compounding machine:
1. Advanced Nitriding Technology
2. Anti-corrosion and Wear-resisting Duplex Metal Spraying Technoloy
3. We use special alloy powders being sprayed and welded on the screw's ridge, and
Use different alloy and welding methods for the screw of different functions.


Especially application:

Rubber, various high glass fiber, mineral fiber and PPA, PPS, PA6T, LCP, VO fire protection, ferrous power, magnetic powder and etc. Meanwhile, Used for PVC + 30% CaCo3, recylced plastic material, etc


90mm bimetallic twin parallel screw barrel for compounding machine
Diameter
Φ 15mm-Φ 350mm

Designing

Screw structure and compression
Ratio can be designed according
To different products & different output requirement.

Materials
38CrMoAlA
(JIS SACM645)
SKD61
Application
PVC plate, pipe, profile, pellet and mould, at the same time,
It solved the technical problem of low foaming, high foaming,
High filling, wear and corrosion.
Nitride Case Depth
0.5mm-0.8mm
Technology
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
Nitride Hardness
950-1020HV
Packing
Wrapped up by film in wooden
Nitride Brittleness
≤ Grade One
Payment Term
T/T, L/C
Surface Roughness
Ra0.4um
Delivery Term
25 working days
Screw Straightness
0.015mm
Port Departure
Shanghai/Ningbo
Alloy Hardness
HRC58-62
Min. Order
1 set
Alloy Depth
0.5mm-0.8mm
Common Nitrided: 2.5-4years
Bimetallic: Much longer lifetime.
Guarantee

Advantages
1. Parallel twin screw and barrel has the advantage of lower rotation speed, smaller shear stress between the small screw
2. Good plasticization, high productivity, small shear force, stable pressure, less wear and tear and low cost.
3. Parallel twin-screw and barrel is widely used in PVC products processing, especially for the production of PVC products with the output over 350Kg / h, because the parallel twin-screw and barrel costs less than conical twin-screw and barrel while it has more mature technology.
4. Parallel twin-screw and barrel is successfully applied in PVC plate, pipe, profile, pellet and mould, at the same time, it solved the technical problem of low foaming, high foaming, high filling, wear and corrosion.