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1.extrusionsingle screw barrel;, 2.base material 38CrMoALA, 40Cr;, 3.nitrided or bimetallic treatment;, 4.1 year's guarantee. - details see: https://www.machineto.com/pe-pp-pvc-extrusion-machine-single-screw-barrel-10334832

With the development of varieties of plastics, more and more customers are requesting for bimetallic screw to extend the

lifetime of the screw.

Normally we do PTA weld spray coating for the bimetallic screw. And we apply Stellite alloy powder which is in high wear

resistance and corrosion resistance.

Physical Characteristics of Bimetallic Screw

Type	Model	Hardness (HRC)	Wear resistant	Corrosion resistant	Thickness	Application Glass Fiber
PTA weld	J1 38CrMoAlA Ni-base alloy	45-58	Excellent	Special excellent	1.5~3mm	Under 10%
	J2 SKD61 Ni-base alloy	45-58	Special excellent	Excellent	1.5~3mm	Under 15%
Nitriding	J3 Nitrided	HV more than 800	Good	Good	0.25mm	/

Types of Bimetallic Screw

For barrels, 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

Application:

We suggest you the bimetallic screw 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

E.J.S Inspection