Bimetallic screw barrel

Bimetallic screw barrel

Bimetallic screw barrel

Place of Origin: Zhejiang, China (Mainland)

Brand Name: QUNYING

Model Number: plastic injection machine bimetallic screw barrel

Material: 38CrMoAlA

Finishing: Bimetallic

Alloy thickness: 1-3mm

Alloy hardness: HRC 56-65

Process: Centrifugal Casting

Alloy Component: Fe Basis and Tungsten Carbide 5%

Feature: Anti-abrasion and Anti-corrosion 

Guarantee: 12 months after departure date

Application: plastic injection machine

Contact Us

Products Details

Packaging & Delivery

 Packaging Details: PE Casting Film and Standard Wooden Case

Delivery Time: 25~30 Days after Deposit Payment




1 set (1 pc screw and 1 pc barrel)


25~35 days

Design Details

I TYPE:nitirding ones
II TYPE:bimetallic ones
III TYPE:chrome plating ones
I TYPE:nitriding ones
II TYPE:bimetallic ones


1X screw head,1x screw collar,1xscrew sheel,1xbarrel flange,1xbarrel nozzle

Technical Specification

Material:High quality 38CrMoAlA
Process:Advanced nitriding & bimetallic process
Hardness After Hardening & Tempering:HB280-320
Nitrided Hardness:HV900-1000
Nitrided Case Depth:0.45-0.8mm
Nitrided Brittleness:Less than Grade 2
Surface Roughness:Ra 0.4
Screw Straightness:0.015mm
Alloy Hardness:HRC 50-65
Alloy Depth:0.8-2.0mm for screw and 1~3mm for barrel


Production Flow

Screw Process:

Blanking ->Punching ->Rough turning ->Hardening & Tempering ->Finish turning ->Rough Milling ->Finish Milling ->Make grooves for bimetallic ->Bimetallic by PTA ->Rough Grinding ->Rough polishing ->Make splines or Keys ->Nitriding ->Finish Grinding ->Polishing ->Packing & Delivery

Barrel Process:

Blanking ->Punching ->Rough turning ->Rough Boring ->Hardening&Tempering ->Finish Boring(0.4-0.8mm) ->Make grooves for bimetallic ->Bimetallic by PTA ->Finish Grinding ->Finish turning ->Milling the feeding hole & exhausting holes ->Nitriding ->Make other small holes,thermometer hole,location hole->Grinding surface of feeding hole & exhausting hole ->Polishing ->Packing & Delivery


Company Information

ZHOUSHAN QUNYING PLASTIC MACHINERY MANUFACTORY is a professional manufacturer of extruder screw barrel, injection screw barrel, parallel twin screw barrel, conical twin screw barrel, rubber screw barrel, bimetallic screw barrel and other various types of screw barrel. At present, Qunying SCREW have a professional design experienced production team. We are located in east of Zhoushan city, zhejiang province, close to Shanghai, Ningbo port.

ZHOUSHAN QUNYING SCREW has strong technical force, equipped with advanced equipment and strict tests. Mostly products materials are selected from high quality powder alloy steel with the best materials to exploit market and most new materials, add reasonable process design through tempering, molding, qualitative, nitriding, fine grinding, polishing process of refining. So that the screw barrel has super-hard resistance wear, corrosion resistance, fracture resistance. In order to meet the needs of our customers, we company also provides product design, surveying and mapping, sample processing and repair manufacturing business. All of our products comply with international quality standards (ISO9001-2000). Since the establishment of the company, we are getting greatly appreciated and praise from new and old customers around the world. We will insist on the principle of quality, honest to customers, and provide our customers new information of the products and offer good quality products with good price.

Till now, our screw barrels have been exported to more than 40 countries all over the world, like USA, India, South Africa, Turkey, Russia and so on. We sincerely welcome customers to negotiate consultation and exchanges guidance. Your satisfaction is our eternal pursue and goal.


  • captcha