Professional Bimetallic Screw Barrel & Plastic Machinery Parts Manufacturer

Chemical fiber series screws (Meltblown screws)

The screw of chemical fiber series is designed for various kinds of chemical fiber spinning, and the screw is designed as LTM pin, extruding stability and plasticizing uniformity.

Specification: 

Screw diameter:Ø15-Ø300

Aspect ratio:15-46

Product type:

For different plastic products screw can be used: ordinary type, pin type, barrier type, separation type, exhaust type and so on. 

Base material:

1)38CrMoAlA(JIS SACM645)
2)42CrMo(AISI 4140)

Process:

Heat treatment

Nitriding treatment

Technical Parameters:

Nitriding depth: 0.50mm-0.80mm                                
Nitriding hardness: 900-1000HV               
Nitriding: <= Level 1                   
Surface roughness: Ra 0.4                  
Screw straightness: 0.015mm                
The hardness of the surface after chrome plating:≥950HV       
Chromium layer thickness: 0.025~0.085mm          
Double alloy depth: 3mm

Applicatons

Polyester, nylon, spandex, polypropylene spinning

Application product:

Blow moulding	Blow Film Extrusion	Calbe Industries	Food Industries	Paper Industries	Plastic granules

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