Extruder bimetallic screw & barrel
Diameter of single screw : D15mm~D300mm
L/D: 12~45
Max. Length: less than 10000mm
Scope of application: pipe, film, profile, sheet, pvc pe/pew pc pelleting etc.
For good plasticizing effect, we have different design of screw & barrel to meet your requirements
Detailed Technical Information
| Base Material | 1)38CrMoAlA(JIS SACM645) 2)Cr12MOV(JIS SKD-11) 5)9Cr18MoV |
| Bimetallic Alloy Materials | 1)Fe-based alloy 2)Ni-based alloy/Deloro alloy 4)NiCo-based alloy |
| Bimetallic Alloy level | Level A - containing Tungsten of 40% Level B - containing tungsten of 25% Level C - containing tungsten of 9.5% |
| Designing | Screw structure and compression ratio can be designed according to different products & different clamping force requirement. |
| Treatment 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 Treatment Nitriding treatment(>100 Hours) Depth of Nitrided Layer: 0.5-0.8 mm Hardness of Nitrided Layer: >950Hv Hard Chrome Plating treatment: Thickness of Hard Chrome Plating Layer: 0.03-0.08mm Hardness of Hard Chrome Plating Layer: ≥950HV Nickel alloy plating.treatment: Bimetallic Barrel Centrifugal Casting (Inlay Alloy) Bimetallic Screw: Plasma Alloy Coating Spraying Depth of Bimetallic Layer: >2mm Hardness of Bimetallic Layer: HRC55°-65° |
| Material Application | 1)General Plastics 2)ABS,PA,PC,PE,PET,PP,PS,EVA,PU,PVC,U-PVC,etc 3)PA + GF(Glass Fiber) 4)Flame-resistant Reinforced Plastics 5)Modified Engineering Plastics 6)All kinds of Mixed Recycled Material(in Scrap or Granule),etc |
| Basic Infomation | Surface Roughness :Ra0.4um Linearity of the screw: ≤0.015mm Linear axis limit: ≤0.02mm Hardness after Hardening & Tempering: HB260-300 Fragility of Nitration:≤Two grade |
| General Terms | Means of transport: Ocean,Air,Express Production time: About 30 days after we receive the deposit and lead time will different according to the order quantity. |
| Warranty period | 1-2years(Depends on the plastic raw materials) Bimetallic: much longer lifetime. |
| Competitive Edge | 1.Long lifetime,low energy consumption. 2.Wonderful plasticizing 3. Top-quality bimetallic screw and barrel 4. High wear resistance, resistance to corrosion 5. Fast and On time delivery 6. Best customer after-sale service! |
Bimetallic Screw production method:
Plasma Alloy Coating Spraying or Wc/Co Whole spray welding
The PTA powder plasma welding applies the positive and negative electrodes of arc welding, allowing the welding path to be completely, welded with the base material. The minimum possibility of the welding path becoming less rigid fully prevents the welding layer from peeling off – thereby effectively upgrading the life time of the screws.
Outstanding Features of Bimetallic Screw and Barrel:
Hardness HRC55-65 Outstanding corrosion-resistance.
Hardness layer reaches above 2mm thickness. Hardness does not decrease with depth.
Hardness does not decrease under normal temperature.
Abrsion resistance / wear resistance on the hardened layer is 2~3 times higher than that treated by conventional heat treatment.
We specialized in manufacturing many types of screws, the barrels can be applied on all types of injection moulding machine,rubber hot-feeding extruder, rubber cold-feeding extruder, pin barrel cold feed extruder, plastic extruder with different specifications for Haitian,Demag,Toshiba, Husky, Nissei etc.We can provide the models of screw including variable pitch and variable depth, variable pitch and equal depth, variable depth and equal pitch, and equal depth and pitch.Groove multi-die type, composite type, mixing type and separating type.
