Bimetallic Conical Double Barrel And Screw For PVC Plastic Extruder Machine

The bimetallic barrel for single screw is a kind of barrel moulding 2-5mm thick alloy coat on the barrel inner wall which has excellent corrosion resistance, abrasion resistance and high working temperature.And its useful service life is greatly improved contrast to the common nitrided barrel.Bimetal has more obvious advantage when processing special plastics to enhance the abrasion life, such as engineering plastics, flourine plastics,PPO,and etc.
The company uses special alloy powders being sprayed and welded on the screw's ridge, and used different alloys and welding methods for the screw of different functions.

Material:38CrMoalA
Nitriding treatment,Surface hardness:HV>=900
Nitriding depth: 0.5-0.8mm

Material of barrel inside layer,Tungsten carbide alloy,
Centrifugal casting,prolong life of barrel.

Alloy classification
A- iron alloy cylinder
B- nickel alloy cylinder
C- tungsten alloy cylinde


2 . product category: bimetallic hole centrifugal casting barrel
Working range: inner diameter 15mm-500mm, effective
length:80000mm
processing technic: HP/HVOF+Metallurgical Bonding
alloying component: Ni+Cr+Wc and so on
hardness scale: HRC62-64
adhesion power: >126MPA
straightness: 0.015mm/m
surface roughness: Ra0.4um
Alloy nameplate: Sweden
Product note: Patent all alloy sintering technology, super wear resistance, super corrosion resistance, it is suitable for halogen free material.


3 . Material