Feedscrew
Product Description
Product Detail
Feedscrew
The heart of an injection molding machine or extrusion machine is the feedscrew and barrel. Superior Quality, Fair Cost, Excellent Service make EJS outstanding from competitors.
Since establishment, EJS Feedscrew has been well sold nation wide. When export started, more feedscrews are produced for customers from Europe and America.
Diameter of feedscrews varies from 12mm till 500mm, while the length is up-to 10 meters in one piece.
Materials recommended for feedscrews:
38CrMoAlA, 34CrAlNi7, 31CrMoV9, 42CrMo4, SKD61, SKD11, Hastelloy 276, SS304, D2
Each feedscrew is customized and made per customer design.
We are capable to produce all kinds of mixers, such as pineapple mixer, Maddock mixer, Saxton mixer, Egan mixer, Diamond mixer, Pin mixer etc.
About E.J.S.
EJS Screw Barrels is a newly created brand name for Export business with manufacturing experiences since 1992.
A screw barrel manufacturer dedicated on producing customized screw barrel and design extruder screw barrels, injection moulding screw barrels.
Bimetallic Screw Barrels
We started to make bimetallic screw barrel at a very early age, almost the same time as the first bimetallic barrel was born in China. Now we have several types for options depending on different applications
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Bimetallic Barrels |
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Alloy Type |
EJS01 Alloy |
EJS02 Alloy |
EJS03 Alloy |
EJS04 Alloy |
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Alloy Components |
Fe+Ni+Cr+B |
Ni+Cr+Co+B |
Ni+Cr+Co+V+B |
Ni+Wc+Cr+B |
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Wearing Resistance |
★★★ |
★★ |
★★★ |
★★★★ |
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Corrosion Resistance |
★★ |
★★★ |
★★★ |
★★★ |
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Alloy Thickness |
2~3mm |
1.5~2mm |
1.5~2mm |
1.5~2mm |
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Hardness |
HRC 58-65 |
HRC 50-58 |
HRC 55-60 |
HRC 55-65 |
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Temperature Range |
≤400 |
≤450 |
≤450 |
≤600 |
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Coefficient Thermal |
RT~250℃ |
11.0x10-6 |
11.0x10-6 |
11.5x10-6 |
11.0x10-6 |
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Expansion(/℃) |
RT~400℃ |
11.4x10-6 |
11.4x10-6 |
12.4x10-6 |
12x10-6 |
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Range of Workable Length |
700mm~3000mm/piece |
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Base Steel Vastly Used |
40Cr: 42CrMo |
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Mark in the list: ★★★★ Excellent; ★★★ Very Good; ★★Good |
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Bimetallic Screws |
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Suitable for |
Single Screw, Twin Parallel Screw, Twin Conical Screw |
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Alloy Type |
Ni60 |
CoImonoy 56 |
CoImonoy 83 |
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Alloy Components |
Ni+Cr+Fe+Si |
Ni+Cr+Si+Fe |
Ni+Wc+Cr+C |
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Anti-Wearing Level |
★★★ |
★★★ |
★★★★ |
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Anti-Corrosion Level |
★★★★ |
★★★★ |
★★★★ |
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Alloy Thickness |
1~1.5mm |
1~1.5mm |
1~1.5mm |
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Hardness |
HRC 56-62 |
HRC 46~61 |
HRC 43-48 |
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Applied Glass Fiber |
Under 10% |
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Range of Workable Length |
Any length needed |
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Base Steel Vastly Used |
38CrMoAI(1.8509), 34CrAINi7(1.8550), 31CrMoV9(1.8519) |
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Mark in the list: ★★★★ Excellent; ★★★ Very Good; ★★Good |
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Quality Inspection
Quality is a very important step during production. For making a quality screw barrel, all tolerances should be fulfilled and all dimensions should be correct and put in records.
We provide inspection report, material certificate for every of our supplied screw barrels.
Packaging
Packaging is the last but very important step before shipping. A strong and smart packing box is also part of our quality. It is not only used to protect the screws barrels well during transportation, also provide an easy way for our customer to unpack.