Home  >  Raw Material Processing Machinery  >  Plastic & Rubber Machinery Parts

Our parallel twin screw and barrel have high surface area and low shear screw designs that will optimize the melt homogeneity. - details see: https://www.machineto.com/screw-barrel-for-extrusion-processing-10335334

Additional Info.

Trademark:	Qunying
Packing:	Wooden Case (Export Standed)
Production Capacity:	1000 Sets/Mouth

Product Description

Features Specifications: Screw
Instructions for Screw:
1. We are a professional company specialized in manufacturing many types of screw, the barrel can be applied on all types of injection moulding machine, rubber hot-feeding extruder, rubber cold-feeding extruder, pin barrel cold feed extruder, plastic extruder with different specifications.
2. The models of screw include:
Variable pitch and variable depth, variable pitch and equal depth, variable depth and equal pitch, and equal depth and pitch.
Groove multi-die type, composite type, mixing type and separating type.
3. The material of screw: Manufactured with high-quality nitro alloy steel, applying the method of hardening and tempering and nitriding, thus it enjoys the characteristics of long working life, wear resistance, and anti corrosion. Besides, the technique of hard alloy spraying or chrome plating can be used on the working surface of screw, which will make it have better using effectiveness.

Material:
Alloy-steel of high-quality
1)38 CrMoAIA(JIS SACM645)
2)42CrMo(AISI4140)
3)9Cr18MOV
4)CW6Mo5Cr4V2
5)SKD61
Heat-treatment
Nitriding treatment
Electroplate hard-chrome
High-frequency quenching
Spraying corrosion wear-resisting dual metal layers
Vacuum quenching

Technical Parameter

Steel Material: DIN 41CrA1Mo7 / AST M4140 / GB 38CrMoAlA
Deepness of Nitriding Layer: 0.7 mm -0.9 mm
Hardness of Nitriding: HV900 - HV1, 000
Nitriding Brittleness &le: Grade 1
Chromate plating: Thickness 0.05 mm - 0.10 mm, hardness HV950
Special treatment: Carbide coating on screw flight and bimetallic barrel
Screw straight tolerance: 0.015 mm/m
Surface roughness: Ra 0.4μm

Our screw and barrel can ensure high performance and low energy consumption of extruder and Injection molding machine.

What's more, we can supply professional screw and barrel to your order!