screw and barrel with alloy layer

We can supply all types of screws and barrels according to clients' requirement. appliance:pvc,pp,pe,abs,pmma,etc.

We can supply all types of screws and barrels according to clients' requirement.

Production scope:

Screw diameter Φ20~Φ500

L/D: 15~53Maximum screw length 10,000mmBarrel inner bore diameter Φ500mm

Technical data:

@Depth of Nitrated Layer: 0.5-0.8mm         

@Hardness of nitration: 900-1020Hv@Fragility of nitration: Less than grade 1      

@Surface roughness: Ra 0.4um @Hardness of Cr-coating Layer: ≥950Hv      

@Thickness of Cr-coated Layer: 0.03-0.08m

@Hardness of Bimetallic Layer: HRC55-72      

@Depth of Bimetallic Layer: >2mm

@Guarantee: Common Nitrided: approx 2 years     Bimetallic : much longer lifetime

Alloy –steel of high-quality

-38CrMoALA(JIS SACM645)

-42cRmO(AIS14140)

-9 Cr18Mov

-CW6Mo5Cr4V2

-SKD61

Heat-treatment

-nitriding treatment

-electroplate hard-chrome

-high-frequency quenching

-spraying corrosion wear-resisting dual metal layers

-vacuum quenching

Suitable plastic material: common plastic, PP, PE, ABS, AS, PS etc.

       Professional Production for more than ten years : single screw/parallel twin screw barrel/conical twin screw  barrel etc.

       A professional design team, excellent product design,can be guaranteed quality products.

       Choose Chenshi , Never regret! Welcome contact with us.

screw and barrel with alloy layer