http://www.bjmachinery1.com
Types of screw:
Gradual type, mutant type, wave type, barrier type, double screen type, shunt type, separation type, exhaust type, pin type, mixed type, double-head type, three-head type, multi head type etc.
Material:38CrMoAIA
Hardness after quenching and tempering: HB260-290
Diameter: Φ15mm-Φ300mm
L/D: 4-55
Hardness after nitriding: HV900-1000
Depth of nitrided layer: 0.5-0.7mm
Brittleness after nitriding: ≤second level
Surface roughness: Ra0.4um
Straightness: 0.015mm/m
Inside&outside diameter tolerance: ≤0.02mm
Screw length tolerance: ≤0.03mm
Key&spine tolerance grade: Grade 7
Single screw extrusion screw barrel can be applied to PP, PE, PS, ABS, PC, PMMA, PVC, TPU and other thermoplastic pipe, film blowing machine, sheet, profile and so on.
For different raw materials and product specifications, the screw uses different aspect ratio and compression ratio, the barrel uses a different structure. To meet the processing needs of high-quality products.
1. PP, PE, ABS, PS, PC, PMMA, PVC commonly used plastic recycling granulation series.
2. PA6, PA66 nylon series, for airbag cloth, waste silk, fishing net silk, cloth head, wood shaving safety rope, PP non-woven fabrics.
3. PP PE film, woven bag and other soft material series, Screw barrel structure has a side Screw feed, side pellet feeding.
4. Water granulation series, for PE PP PA water membrane material, waste silk, woven bag etc.
5. Squeeze dry grain series for film material with water, woven bag etc.
