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plastic single screw and barrel/plastic cylinder, material :38CrMoALA, long working life,wear resistance, - details see: https://www.machineto.com/plastic-single-screw-and-barrel-plastic-cylinder-10334904

plastic single screw and barrel/plastic cylinder

Depth of nitrition layer: 0.5-0.8mm

Nitriding treatment, surface hardness: HV≥900-1000

Fragility of nitrition: less than grade 1

Surface roughness: Ra 0.4um

Streightness of screw: 0.015mm

Surface of hardness of nitrated Cr coating layer: ≥950HV

Hardness of Cr coating layer: HRC55-62

Thickness of alloy plating: 0.03-0.08mm

Depth of alloy layer:>2mm

Used for granulation,PP, PE, PA, PC, ABS,AS etc

We can manufacture various kinds of screw barrels according to the customer’s requirement

Zhejiang Bohai screw and barrel
Diameter	Φ25/53,35/77,45/90,51/10, 55/110,65/120,65/132, 70/140,75/150,80/156, 80/172,90/184 92/188.etc	Designing	Screw structure and compression ratio can be designed according to different products &different mixtrues.
Standard Specifications	ISO9001	Advantages	1.Long time Nitriding Technology 2.Anti-corrosion and Wear-resisting Duplex Metal Spraying Technoloy 3. we uses special alloy powders being sprayed and welded on the screw's ridge,and uses different alloy and welding methods for the screw of different functions.
Materials	38CrMoAlA (JIS SACM645) SKD61 .etc	Application	PS,HIPS,ABS,SAN,EPN/LDPE,HDPE,UHMPE, EVA,PP,PVC,PMMA,POM,PAST,PET,PBT
Nitride Depth	0.5mm-0.8mm	Technology	1)Longer time Gas Nitriding treatment 2)special anti-wear & abrasion alloy (bimetallic) 3)tungsten carbide;4)cobalt base alloy 5)stainless steel 6)Gh113 nickel based alloy
Nitride Hardness	950-1050HV	Packing	Wrapped up by film in wooden
Nitride Brittleness	≤Grade One	Payment Term	T/T , L/C ,Western Union
Surface Roughness	Ra0.4um	Delivery Term	20-30 working days
Screw Straightness	0.015mm	Port Departure	Shanghai/Ningbo
Alloy Hardness	HRC65-75	Min. Order	1 set
Alloy Depth	1.5mm-3.5mm	Warranty period:2-4years(Depends on the plastic raw materials) Bimetallic: much longer lifetime.
Nitriding time	Over 180 hours

About BOHAI :

1. Our Strength: We have an experience of more than 20 year of manufacturing and designing Plastic machines, varied Screws and Barrels and spares. We concentrate on improving quality, updating design and enhancing service.
2. Our products: Screws Barrels for Injection, Extrusion, and Blow Molding applications; relevant accessories(such as die head, gearbox, filter screen changer and so on); plastic processing machinery.
3. Location advantage: located in China's Screw Town - Jintang Town in Zhoushan City, near to Ningbo Port and ShanghaiPort.
4. Market areas: global sales network reaching South America, Eastern Europe, Southeast Asia, Africa, Oceania and the Middle East.
5. We promise: We assure the customer benefits, We provide competitive price, We Emphasis On Cooperation.