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1. extruder single screw barrel;, 2. Base material 40Cr;, 3. High wear and corrosion resistance;, 4. Longer lifetime. - details see: https://www.machineto.com/40cr-centrifugal-casting-extruder-single-screw-barrel-10334824

Why are bimetallic barrels used today?

The today's processing of modern plastics with fillers and fibers requires modern machine equipment. In the area of the

plastification process this was taken into consideration through the development of most up-to-date wear resistant systems.

Advantages of bimetallic

· Lower wear resulting in higher process stability

· Combination of wear and corrosion resistance

· Based on the processed plastics, the correct wear protection system is chosen.

E.J.S is offering 4 kinds of bimetallic alloys against all types of wear:

Alloy Type		EJS01 Alloy	EJS02 Alloy	EJS03 Alloy	EJS04 Alloy
Wear resistance		Very good	Good	Very good	Excellent
Corrosion resistance		Good	Very good	Very good	Very good
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 (°C)		less than 400	less 450	less than 450	less than 600
Coefficient thermal	RT-250°C	11.0 x 10-6	11.0 x 10-6	11.5 x 10-6	11 x 10-6
Expansion (/°C)	RT-400°C	11.4 x10-6	11.4 x10-6	12.4 x10-6	12 x10-6

The thickess of the alloy layer is around 1.5~3mm. It can only be seen clearly at the end of a barrel.

Bimetallic Methods:

Single barrel--by centrifugal casting;

Conical twin barrel--make grooves at the end then by spray coating;

Parallel twin barrel--use bimetallic linner or make grooves at the end then by spray coating.

Application:

We suggest you the bimetallic barrel if you process the material of fiber glass, wpc, calcium carbonate, titanium dioxide ect.

Packing:

We use strong wooden case for export, inner by foam bag.

Company Value

With the company philosophy of Emphasize the details and Pursue the excellence, our products satisfied customers all over the world.

Quality always comes first. Our experienced workers pay attention to every tiny procedure during the production and inspection, to ensure the precision, durability and hardness of our screws & barrels.

Service makes us outstanding. To provide our customers with the excellent service which they deserve, our sales people are trained on the products every day. They are always ready to answer your questions and offer the best solutions in fluent English at any time.

E.J.S Workshop:we brought in 3 sets of advanced CNC machine to produce more accurate screw barrel.