Haitian injection screw barrel

The injection screw should be constructed of materials that provide a balance of abrasion resistance and corrosion protection. Options for construction include 38 CrMoAlA nitrided steel with abrasion resistant coating such as bimetallic or Tunsten carbide on screw flights.

Barrel show:

Screw Show:

Products details:

Advandages of bimetallic

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

2.Wear resisting
Some times,we also need to add some materials easy to wear,such as Caco3,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 several years.

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 common in 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 technical these 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 advantages:
- Screw and barrel for various models
- Professional engineers design for you
- Thousands of drafts can supply for you
- Professional Tech. and R&D team
- Insist on developing screws and barrels for more injection molding machine and extruder machine models
-Our screw barrel can ensure the well performance and low energy
consumption of extruder and Injection molding machine. We insist on the principle of quality first, honest to customers

And besides the injection molding machine screw and barrel, we also process extruder screw and barrel, conical twin screw and barrel, parallel twin screw and barrel,rubber machine screw and barrel,planet screw and barrel.

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