Zhejiang Bimetal Machinery Co.,Ltd.


Bimetallic Screw Barrel manufacturing series of screws, rubber melting cylinder products. Products are widely used in the 30-40000 grams injection molding machine, the 15-250mm single screw extruder, and the 30-130mm conical and parallel twin-screw extruder and all kinds of rubber machine, weaving machine, puffed food machine. All of the products are made of quality 38CrMoALA steel. By employment of fine processes of quenching and tempering, stiffening, nitriding, grinding, finishing, and guidance of ISO9002 International Quality Control System, products are in line with international standards. GⅡ 113 nickel-based alloy (latest 3# steel) screw cylinder is also one of our fist products; it is applicable for alloy bimetal (PTA) welding. In addition to providing balance equipment for complete machine companies abroad, we are also a leading Supplier undertaking OEM service, surveying and mapping assistance, as well as design services for big and small companies at home. No matter you are our existing partner or potential customer, with the most competitive products and services, we warmly welcome your visit and inquiries with our wholeheartedly and thoughtful services. 



Screw & Barrel For Single Screw Extruder
Specification parameters:
Screw diameter:Φ16-Φ300
the whole set contains: screw, screw head, parallel twin screw and barrel, gasket, cylinder, precursor and nozzle.
The screws can be specially designed according to different products and recipes.


Base material:
1)38CrMoAlA(JIS SACM645)
Material composition analysis:
C: 0.35~0.42 Si: 0.20~0.45 Mn: 0.30~0.60 S: ≤0.035 P: ≤0.035 Cr:1.35~1.65 Al: 0.70~1.10  Ni: ≤0.030  Cu: ≤0.030   Mo:0.15~0.25

Treatment process:
Tempering, qualitative treatment
Nitriding process
Spraying alloy

Technical parameters: Tempering hardness: HB260-290 Nitriding depth: 0.50mm-0.80mm Nitriding hardness: 900-1000HV Nitriding brittleness: <= level 1 Surface roughness: Ra 0.32 Screw straightness: 0.015mm Alloy layer thickness: 2-3mm Alloy layer hardness: HRC58-65  



Zhejiang Bimetal Machinery Co.,Ltd.
Add:Dinghai Jintang Xihou Industrial Park, Zhoushan, Zhejiang, China
Tel: +86-0580-8051089 8052827
Fax: +86-0580-8053808
E-mail: admin@chenshiscrew.cn