Screw Barrel for PP/ PE/PVC extrusion barrier screw barrel, extrusion screw barrel, bimetallic screw barrel, barrier screw barrel
Specification:
Screw Diameter: Ø 15- Ø 300
L/D ratio: 15-46
Product classification:
Aiming at different plastic products the screw can be chosen from: General type, pin type, barrier type, separation type, and gas-exhausting type, etc.
Base Materials:
(1)38CrMoAlA(JIS SACM645)
(2)42CrMo(AISI 4140)
(3)4Cr5MoSi V1 (JIS SKD-61)
(4)9Cr18MOV
(5)HPT
Bimetallic alloy materials:
1)Fe-based alloy
2)Ni-based alloy/Deloro alloy
3)Co-based alloy
4)NiCo-based alloy
5)Tungsten carbide/Wolfram carbide
Technics:
Heat treatment
High-frequency quenching
Nitriding treatment
Hard-chrome electroplating
Bimetallic alloy welding
Bimetallic alloy centrifugal casting
Technical parameter:
Nitrided layer depth: 0.5-0.8mm
Nitrided hardness: 900-1000HV
Nitrided brittleness: Less than grade 1
Surface roughness: Ra0.4
Linearity of screw: 0.015mm
Hard-chrome plating hardness after nitriding: ≥ 950HV
Chrome-plating layer depth: 0.025-0.085mm
Bimetallic layer depth: 3mm
Warranty and service: 1 year.
Foucs on quality and service.
Experienced manufacturer, we will be the best choice.
| Base Materials |
1)38CrMoAlA(JIS SACM645) 2)Cr12MOV(JIS SKD-11)
3)4Cr5MoSiV1(JISSKD-61)4)42CrMo(AISI 4140) |
| Bimetallic |
1)Fe-based alloy 2)Ni-based alloy
3)Co-based alloy4)NiCo-basedalloy
5)Tungsten carbide/Wolfram carbide |
| Tungsten Carbide |
Level A - containing Tungsten of 40% Level B - containing tungsten of 25% Level C - containingtungstenof9.5% |
Sheet 2
Plastic material application
| Plstic 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(inScraporGranule),etc |
Sheet 3
Surface Treatment
| Heat Treatment |
High Frequency Treatment |
| Nitriding treatment(120 Hours) |
Depth of Nitrided Layer: 0.5-0.8 mm Hardness of NitridedLayer:900-1020Hv(HRC56°-65°) |
| Hard Chrome Plating treatment |
Thickness of Hard Chrome Plating Layer: 0.05-0.10mm Hardness of Hard Chrome Plating Layer: ≥950HV |
| Bimetallic treatment |
Bimetallic Barrel/Cylinder: Centrifugal Casting(InlayAlloy) Bimetallic Screw: Plasma Alloy Coating Spraying Depth of Bimetallic Layer: >2mm Hardness ofBimetallicLayer:HRC55°-72° |
sheet4
Basic information
| Roughness of the surface |
Ra0.4um |
| Linearity of the screw |
≤0.015mm |
| Linear axis limit |
≤0.02mm |
| Hardness after Hardening & Tempering |
HB240-280 |
| Fragility of Nitration |
≤Two class
|
Audited Supplier 
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