Single Screw and Barrel

Types :Gradual change,chop ,barrier,distributary ,separate,exhausting,pin brewing and pelletizing,etc

Specfication :Dia ,20mm--250mm
L/D=15-45
Material 38CrMoALA(JIS SACM645) 42CMo(JIS SCM440) SKD61
Treatment:Nitrized,Chrome coating,quenching,bi-metallic

Parallel Twin Screw and barrel
Diameter: 75,90,110,120,130
L/D=18-36
The compressor ratio of the screw can be properly designed according to the different formula.

Technical Specification:

Material :38CrMOALA

Tempering hardness:HB240°-280°

Nitrized hardness:HV850°-1000°

Nitrized thickness:0.45-0.7mm

Nitrized friability:Less than grade 2

Surface roughness<=Ra0.4

Liner straightness:0.015mm

Surface hardness after Chrome coating:≥900HV

Chrome coating layer thickness:0.05-0.10mm

Hardness of the bi-metallic layer:HRC56°-65°（Ni based alloy）

Depth of bi-metallic layer:0.8-2.0mm

Conical twin screw and barrel
Diameter:45/100,50/105,55/110,65/132,80/156,92/188,ect
The compresseor ratio of the screw can be properly designed according to the different formula.

Technical Specification:

Material :high qulity 38CrMOALA

Tempering hardness:HB240°-280°

Nitrized hardness:HV850°-1000°

Nitrized thickness:0.45-0.7mm

Nitrized friability:Less than grade 2

Surface roughness<=Ra0.4

Liner straightness:0.015mm

Surface hardness after Chrome coating:≥900HV

Chrome coating layer thickness:0.05-0.10mm

Bi-metallic layer hardness:HRC56°-65°（Ni based alloy）

Bi-metallic layer thickness:0.8-2.0mm

• Single screw and barrel
• Parallel twin screw and barrel
• Conical twin screw and barrel1
• Conical twin screw and barrel2
• Conical twin screw and barrel3