Product Description

Extrusion feed screws are commonly used in the plastics and food production industries to move, mix and extrude product.In the plastics industry, feed screws are the hearts of the extruders used in blow molding, injection molding, sheet extrusion and profile extrusion.

Product Detail

Extrusion feed screws

China Extrusion Feed Screws are taking an important role all over the world. Lots of customized screws barrels are exported from China every year. There are many options on steel, steel 1.8509, 1.8519, 1.8550 , SS304, AISI4140, Hastelley C276,  treatment could be Nitriding, Bimetallic, Chrome-plating.

 

Being the most cost-effective supplier from China, the Sales number of Extruder, Extrusion Feed Screws of E.J.S is increasing every year. The production lines are always busy sometimes overloaded.

Let’s E.J.S grow together with you, from BIG to HUGE.


Extrusion feed screws are commonly used in the plastics and food production industries to move, mix and extrude product.

In the plastics industry, feed screws are the hearts of the extruders used in blow molding, injection molding, sheet extrusion and profile extrusion.

In the food industry, feed screws are used essentially the same as in the plastics industry. The primary difference is that instead of melting the material, the food is cooked as it passes along the feed screw and formed into the desired shape at the end. Instead of applying direct heat, some types of food processing equipment use the feed screw to build up pressure, which generates the heat needed to cook the food product.

Feed screws are not only useful to extrude products. They are also used frequently in many industries to mix various raw materials into a final product.


EJS produces tens of thousands of extrusion feed screws each year, single and twin, to customers nationally and internationally. E.J.S has been manufacturing screw barrel for injection moulding machine screw barrel for years, you are welcome to contact EJS Team for more details.


Bore diameter available for extrusion feed screws

¢12~¢500


Popular Materials used for extrusion feed screws

38CrMoAlA(1.8509)

34CrAlNi7(1.8550)

31CrMoV9(1.8519)

40Cr(4340)

42CrMo(4140)

SS304

SS316

D2(1.2379)

SKD61


Surface Treatment of extrusion feed screws

Nitrided

Bimetallic alloy coated

Hardened

Chrome-plating


Application of extrusion feed screws

Panel extrusion

Profile extrusion

Sheet extrusion

Pipe extrusion

Board extrusion

Compound extrusion

Blow moulding extrusion


I sent an inquiry to your company, why am I still waiting for the quotation?

EJS sales usually replies the customer with a price quote within one working day.

If your inquiry comes in in the morning, you are expected to have the price on the same day.

If your request comes in after 16:00( GMT+8 time), the price may be available on the next day, however we’ll try to reply you on the same day.

If you don’t receive anything back from us, your email might be NOT-delivered, OR our email goes to your SPAM box, please contact us via Phone or Skype or WhatsApp.


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

Bimetallic Barrels

Alloy Type

EJS01 Alloy

EJS02 Alloy

EJS03 Alloy

EJS04 Alloy

Alloy Components

Fe+Ni+Cr+B
(Fe:65, Ni:14, Cr8, B:3.5)

Ni+Cr+Co+B

Ni+Cr+Co+V+B

Ni+Wc+Cr+B
(Ni:50, Wc:15~35,Cr:6~8, B:2.5~3.2)

Wearing Resistance

★★★

★★

★★★

★★★★

Corrosion Resistance

★★

★★★

★★★

★★★

Alloy Thickness

2~3mm

1.5~2mm

1.5~2mm

1.5~2mm

Hardness

HRC 58-65

HRC 50-58

HRC 55-60

HRC 55-65

Temperature Range

≤400

≤450

≤450

≤600

Coefficient Thermal

RT~250℃

11.0x10-6

11.0x10-6

11.5x10-6

11.0x10-6

Expansion(/℃)

RT~400℃

11.4x10-6

11.4x10-6

12.4x10-6

12x10-6

Range of Workable Length

700mm~3000mm/piece

Base Steel Vastly Used

40Cr: 42CrMo

Mark in the list: ★★★★ Excellent; ★★★ Very Good; ★★Good


Bimetallic Screws

Suitable for

Single Screw, Twin Parallel Screw, Twin Conical Screw

Alloy Type

Ni60

CoImonoy 56

CoImonoy 83

Alloy Components

Ni+Cr+Fe+Si
(Ni:65, Cr:17, Fe:15, Si:5)

Ni+Cr+Si+Fe
(Ni: 68, Cr:18, Si:5, Fe:5)

Ni+Wc+Cr+C
(Ni:40, Wc:34, Cr:20, C:2)

Anti-Wearing Level

★★★

★★★

★★★★

Anti-Corrosion Level

★★★★

★★★★

★★★★

Alloy Thickness

1~1.5mm

1~1.5mm

1~1.5mm

Hardness

HRC 56-62

HRC 46~61

HRC 43-48

Applied Glass Fiber

Under 10%

 

 

Range of Workable Length

Any length needed

Base Steel Vastly Used

38CrMoAI(1.8509), 34CrAINi7(1.8550), 31CrMoV9(1.8519)

Mark in the list: ★★★★ Excellent; ★★★ Very Good; ★★Good



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.




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