Bimetallic Conical Twin Screw Barrel for PVC Pipe Extrusion Line

Conical twin screw and barrel, All kinds of conical twin screw and barrels from 35/75 to 92/188. The compression ratio of screw - details see: https://www.machineto.com/bimetallic-conical-twin-screw-barrel-for-pvc-pipe-extrusion-line-10334997

Place of Origin:Zhejiang China (Mainland)	Brand Name:DONGBIN	Model Number:DB0036	Material::38CrMoALA
Color::silver	Hardening process::Nitriding	Screw edge processing::bimetal spray-finishing	Surface treatment::Polishing
Amount::one set	Customize::Accept	OEM Production::Accept	Design::Can
Certifications::ISO9001:2008

Product Specification:

45/90, 45/100, 50/105, 51/105, 55/110, 55/120, 58/124, 60/125, 65/120, 65/132, 68/143, 70/135, 70/140, 75/150, 80/143, 80/156, 92/188

The ranges of specification above are standard models which are normally kept in stock. We can customize screw and barrel according to your special needs and the compression ratio can be adjusted based on your product and ingredients.

Base Materials :

Mainly we use high quality 38 CrMoALA(JIS SACM645), 42CrMo(AISI 4140), 4Cr5MoSi V1 (JIS SKD-61), etc., most of which are imported from Germany or Japan.

Our screws and barrels are covered by alloy in wearing parts. The material of alloy is as follows:
1)Fe-based alloy
2)Ni-based alloy/Deloro alloy
3)Co-based alloy
4)NiCo-based alloy
5)Tungsten carbide/Wolfram carbide

Special treatment and parameters:
Nitrided layer depth: 0.5-0.8mm
Nitrided hardness: 900-1000HV
Nitrided brittleness: Less than grade 1
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 The ranges of specification above are standard models which are normally kept in stock. We can customize screw and barrel according to your special needs and the compression ratio can be adjusted based on your product and ingredients.

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