Bimetallic injection screw barrel of ENGLE DEMAG SODICK TOSHIBA

TIPS:
The injection screw should be constructed of materials that provide abalance of abrasion resistance and corrosion protection. Options forconstruction include 38 CrMoAlA nitrided steel with abrasion resistantcoating such as bimetallic or Tunsten carbide on screw flights.

screw in injection molding machine



Screw Barrel show:


Advandages of bimetallic

1. Corrosion resisting,
Some plastic materials such as Fluorine,PVC,ABSor add additive GF,etc,when temperature rise higher,will send outcorrosive gas, which will damage your screw and barrel.Common nitridedscrew barrel can not service long time,But bimetallic screw barrel isdifferent,the bimetallic layer could resist the corrosion,make the screwbarrel working life longer.We guarantee you the working life is oneyear,but our customers always use several years.

2.Wear resisting
Some times,we also need to add some materials easy to wear,such asCaco3,or recycled materials,these materials are called bad materials.Common nitrided screw barrel also could not serve you longer. Maybe half year, you need to change one set. In this situation,if you use our bimetallic screw barrel,we can guarantee one year. But our customers always use severalyears.

We-HUACHEN bimetalilc standard:
1. Standard grade: 38CrMoAlA + nitriding 96 hours
2. Bimetallic grade: 38CrMoAlA + bimetallic alloy
3. HC-A grade: Tungsten carbide 40%
4. HC-B grade: Tungsten carbide 25%
5. HC-C grade: Tungsten carbide 15%

We-HUACHEN Bimtallilc Product Show:
Second hand extruder machine bimetallic screw barrel


Two types of bimetallic screw:
The bimetallic also could divide two types, like the above picture show:
Type 1:Sparying the bimetallic on the screw flight,this is very commonin the market. If your plastic material is not very very bad,we suggest you choose this type, because of its economy.
Type 2:Coating the bimetallic on the whole screw,this is new technicalthese years. The advantage:Working life more longer than type 1,the disadvantage: Price is also very higher than type 1.

Injection molding screw we process as the following technical parameter:

Injection screw barrel ---Technical Parameter:
Nitride Case Depth	0.6mm-0.9mm
Nitride Hardness	960-1160HV
Nitride Brittleness	≤Grade One
Surface Roughness	Ra0.4um
Screw Straightness	0.015mm
Duplex Alloy Depth	1.5mm-3.5mm
Duplex Alloy Hardness	HRC60-75
Chromium Coating Thickness	0.025~0.10mm

Injection screw barrel ---Technical Process:
Laser Coating Tungsten Carbide	Vacuum Quenching
PTA Melt-Welding Alloy	Titanizing
Centrifugal Mould Bimetallic Alloy	Nickel Plating
Advanced nitrogen oozes handicraft	Chorme Plating

Various kinds of screw tips,non-return valve,check rings. We also accept small order like several screw tips or others.

About Huachen

Factory Show:

Machines&processing show:

Nitrogen oven & Bimetallic Oven show:

Testing:

Certificate:

Our packing:

Other screw&barrels we process:

About HUACHEN
1.Our Strength: We have an experience of more than 20 year of manufacturing and designing Plastic machines, varied Screws and Barrels and spares.We concentrate on improving quality, updating design and enhancing service.
2.Our products: Screws Barrels for Injection, Extrusion, and Blow Molding applications; relevant accessories; plastic machinery.
3.Location advantage: Located in China's Screw Town - Jintang Town in Zhoushan City, near to Ningbo Port and Shanghai Port.
4.Market areas: Global sales network reaching South America, Eastern Europe, Southeast Asia, Africa, Oceania and the Middle East.
5.We promise: We assure the customer benefits, We provide competitive price, We Emphasis On Cooperation

We can provide thousands of drawings
We can design for you according to your requirements
We can process according to your drawings.


Please contact us,if you have any questions. Mail,phone,skype all are OK.
My skype:lillianyao0421