conical twin double screw and barrel for plastic extruder
Zhejiang Bohai Conical twin screw barrel | |||
Diameter | Φ25/53,35/77,45/90,51/10, 55/110,65/120,65/132, 70/140,75/150,80/156, 80/172,90/184 92/188.etc |
Designing
| Screw structure and compression ratio can be designed according to different products &different mixtrues. |
Standard Specifications | ISO9001 | Advantages | 1.Long time Nitriding Technology 3. we uses special alloy powders being sprayed and welded on the screw's ridge,and uses different alloy and welding methods for the screw of different functions. |
Materials | 38CrMoAlA (JIS SACM645) SKD61 .etc | Application | PS,HIPS,ABS,SAN,EPN/LDPE,HDPE,UHMPE, EVA,PP,PVC,PMMA,POM,PAST,PET,PBT |
Nitride Depth | 0.5mm-0.8mm | 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 |
Nitride Hardness | 950-1050HV | Packing | Wrapped up by film in wooden |
Nitride Brittleness | ≤Grade One | Payment Term | T/T , L/C ,Western Union |
Surface Roughness | Ra0.4um | Delivery Term | 20-30 working days |
Screw Straightness | 0.015mm | Port Departure | Shanghai/Ningbo |
Alloy Hardness | HRC65-75 | Min. Order | 1 set |
Alloy Depth | 1.5mm-3.5mm | Warranty period:2-4years(Depends on the plastic raw materials) Bimetallic: much longer lifetime. | |
Nitriding time | Over 180 hours | ||
Our conical twin screw and barrel provide high surface area and low shear screw designs that will optimize the melt homogeneity.
Screw Main Parameter:
Screw Diameter: Φ20mm-Φ300mm
Material: 38CrMoAlA; SKD61; SKD11; 40Cr; 42CrMo; high quality alloy steel
Technology: Nitriding treatment, alloy coating spraying, heat-treatment
Appliance: PVC, PP, PE, PA, PC, ABS, AS etc
Depth of Nitrated Layer: 0.40-0.70mm
Hardness of nitration: 950-1050Hv
Fragility of nitration: Less than grade 1
Surface Hardness of Nitrated Cr coating layer: Greater than 950Hv
Hardness of Bimetallic Layer: HRC55-62
Thickness of Cr-coating Layer: 0.03-0.08mm
Depth of Bimetallic Layer: Greater than 2mm
Treatment / Technology
Heat-treatment
Nitriding treatment
Alloy coating spraying
Electroplate hard-chrome
High-frequency quenching
Spraying corrosion wear-resisting dual metal layers
Vacuum quenching Contact Infomation
Send Inquiry
Company name:Zhejiang Bohai Machinery Co., Ltd.
Status:[Offline] [Send message] [Chat] Business contact:cobee cao(Mr.) Telphone:  Fax:  Area: Caribbean Region-Bermuda  Address:Shantan road, Dinghai District |