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Help CenterPP Processing Barrel With Bimetallic Layer
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Specifications
1. Barrel with bimetallic layer for extruder;2. Notably span the barrel life time;
3. Four types of alloys to be selected
Advantages of bimetallic barrel
· Double or even triple the llife time of a barrel by changing a nitrided steel to a bimetallic one
· 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
Bimetallic alloys
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 x 10-6 |
11.4 x 10-6 |
12.4 x 10-6 |
12 x 10-6 |
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.
About E.J.S
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.
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.
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