conical twin screw and barrel for pelletizer or granulator. it's a special design for extruder, based on 38CrMoAlA.

conical twin screw and barrel for plastic extruder, granulator or pelletizer

 Ruian Yumin machine screw co.,ltd is a factory specialized in making screw barrel, filter, mould, gearbox and recycling machine. Founded in 1988, Yumin machine screw factory has worked in this field for 24 years and has become the main supplier of some famous plastic machine and package machine factories in Wenzhou area and other parts of China. With the advanced technology and efficient management, we have the confidence and ability to give the best product with excellent quality for our customers.

size: 35/75, 45/90, 45/100, 50/105, 55/110, 60/125, 80/143, 80/156, 92/188, 95/188

Material:    38CrMoAlA   

                  high quality alloy steel

Technology: nitriding treatment,

                   alloy coating spraying,

                   heating treatment,

                   screw fully hardening

Diameter: Φ45-Φ200(according to the demands of customers)

L/D ratio of screw: 16-35

Conical dual-hole barrel screw specificaiton: Φ25Φ45-Φ92Φ188(according to the demands of customers)

 The screw compressor can be designed according to different products and formulas

Technology index: 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

 

 

conical twin screw and barrel for pelletizer and granulator