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Barrel

Extruder and injection molding barrels are both supplied by our company at a range of specifications with Nitrided and Bimetallic execution. We also provide feeding section, bimetallic liner and water jacket separately.

Through years of developing, we have supplied barrels for kinds of machines like Battenfeld, Krauss Maffei, Cicinnati etc.


Nitrided barrels 

Nitrided barrels are for general purpose using, well Nitrided and polished to the request specification. It is widely used for pure plastics like PE, PP, ABS, PLA processing. 

Nitrding is a heat treatment process. The longest barrels we could produce in our Nitriding furnace is 9000mm. A testing piece will put together with barrels, the testing piece will be used to check the nitriding quality and issue our Metallographic Report for our Nitrided Barrels.


Bimetallic barrels 

Bimetallic barrels are providing a longer service time, applied for processing material requesting more wear and corrosion resistance, such as

PVC with CaCo3
Recycled HDPE
LDPE with Mg(OH)2
Nylon with glass fiber

A bimetallic barrel starts with a steel tube. The tube is filled with alloy powder (different kinds available), the steel tube is then heated in a furnace .The heat melts the powdered metal. The metallic melt is evenly distributed by centrifugal casting. After this process, the barrel is made to the correct bore, outer diameter and other dimensions according to the drawing.

 

To apply different processing material, we have several kinds of alloy available:

Alloy Type

EJS01 Alloy

EJS02 Alloy

EJS03 Alloy

EJS04 Alloy

Wear resistance

★★★

★★

★★★

★★★★

Corrosion resistance

★★

★★★

★★★

★★★

Alloy components

Fe+Ni+Cr+B

Ni+Cr+Co+B

Ni+Cr+Co+V+B

Ni+Cr+Wc+Co+B

Hardness (HRC)

58~64

50~58

55~60

56~62

Temperature area ()

400

450

450

600

Coefficient thermal

RT-250

11.0 x 10-6  

11.0 x 10-6

11.5 x 10-6

11 x 10-6

Expansion (/)

RT-400

11.4 x 10-6

11.4 x 10-6

12.4 x 10-6

12 x 10-6

Mark as in list:  ★★★★ Excellent;  ★★★ Very good;  ★★ Good

 

The equipment for doing centrifugal casting:

 

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