Extrusion cylinder screw for LDPE,HDPE,LLDPE blown film

Extrusion cylinder screw for LDPE,HDPE,LLDPE blown film

Specification:

Diameter: Ø15-Ø300

L/D ratio:15-50

base Materials:

1)38CrMoAlA(JIS SACM645)                        

2)42CrMo(AISI 4140)

3)Cr12MoV(JIS SKD-11)

4)4Cr5MoSiV1(JIS-SKD61)

5)9Cr18MoV

Bimetallic alloy materials:

1)Fe-based alloy

2)Ni-based alloy/Deloro alloy

3)Co-based alloy

4)NiCo-based alloy

5)Tungsten carbide/Wolfram carbide

Technics:

Heat treatment

High-frequency quenching
Nitriding treatment

Hard-chrome electroplating

Bimetallic alloy welding

Bimetallic alloy centrifugal casting

Technical parameter:

Nitrided layer depth: 0.5-0.8mm

Nitrided hardness: 900-1000HV 

Nitrided brittleness: 2 Level

Surface roughness: Ra0.4

Linearity of screw: 0.015mm

Hard-chrome plating hardness after nitriding: Higher than 950HV

Chrome-plating layer depth: 0.025-0.085mm

Bimetallic layer depth: 3mm

Bimetallic hardness: HRC50-65

We always adopt high-quality materials, provide best quality, perfect service, prompt delivery and very competitive price for you. 

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