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1. extruder screw barrel;·2. base material 38CrMoALA, 40Cr;·3. nitrided or bimetallic treatment;·4. 1 year's guarantee.
| Place of Origin | Zhejiang China (Mainland) | Model Number | extruder screw barrel |
|---|---|---|---|
| Base material | 38CrMoAlA or 40Cr | Surface treatment | bimetallic execution |
| Surface hardness | 900-1000HV | Surface roughness | Ra0.4um |
| Surface straightness | 0.015mm | Nitride depth | 0.5~0.8mm |
| Bimetallic thickness | 1.5mm~3mm | Alloy powder | 4 main kinds of alloy powder available |
| Size | as per customer's drawings | Details | 1. extruder screw barrel; · 2. base material 38CrMoALA, 40Cr; · 3. nitrided or bimetallic treatment; · 4. 1 year's guarantee. |
| Packaging Detail | strong export wooden case with foam inside |
|---|---|
| Delivery Detail | 20~30 days after receiving the deposit |
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.
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