Product Details

Specifications

1.screw and barrel has long use life
2.screw and barrel has good plasticizing effect
3.high output,good price,good service

Product Name: Gas nitriding single screw and barrel for rubber & plastic machine

Product Description

Technical Parameters for extruder screw and barrel

Steel Material	38CrMoAlA,42CrMo
Hardness after hardening &tempering	HB:280-320
Hardness &Tempering time	72 hours
Nitrided hardness	HV:850-1000
Nitrided time	120hours
Depth of nitriding case	0.50-0.80mm
Nitrided Brittleness	less than grade 2
Surface Roughness	Ra:0.4
surface hardness of chromium- plating after Nitriding	>HV900
Depth of chromium -plating	0.03-0.08mm
Alloy Hardness	HRC:50-65
Alloy Depth	2-3mm

Details for extruder screw and barrel

Screw: 15 mm in diameter-250 mm diameter screw

Screw length: 300 mm to 8000 mm screw length

Machine tube diameter 40 mm to 400 mm: barrel outer diameter

Length-diameter ratio: L/D: 10-46

Screw:

1) Nitriding screw

2) Alloy layer screw

3) tungsten steel screw

Barrel:

1) centrifugal casting bimetallic barrel

2) Nitriding barrel

3) Others

Processing program for extruder screw and barrel

Screw process:

— Cutting stell

— Machining

— Drill hole — Quenching&Tempering

—Machining outside diameter

—Milling screw arris

—Heat treament

—Milling screw arris accurately

—polishing

—grinding outside diameter

—milling spline

—Nitriding

—polishing again

—Inspecting

—Package

Barrel:

— Cutting stell

—Machining

—Drilling hole

—Rough machining

—Hardening&Tempering

—Machining again

—Grinding inner hole

—finish machining

—milling feeding hole

—Nitriding

—grinding inner hole again

—polishing

—package

Extruder screw and barrel application for plastic

Hrad Plastic polystyrene

PS.ABS.SAN.EPN

Soft Plastic polystyrene

LDPE.HDPE.UHMPE.EVA.

Polypropylene

PVC

UPVC

Polyacrylic resin

PMMA

Polyacetal class

POM

Nylon class

PA6.PA12.PA66.PAST

polyester class

PET PBT UP

Extruder screw and barrel picture

Packaging & Shipping

Packaging & Shipping

Port	NingBo/Shanghai
Packing	screw barrel are wrapped in a layer of plasticfilm then will be fixed in a strong wooden case
Volume	0.5m³-5m³ one set
Delivery	30 working days after the deposit

Our Services

Services

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M:86-13646807744