Conical twin screw and barrel

Specification:35/76, 45/90, 45/97, 50/105, 51/105, 55/110, 60/125, 65/120, 65/132, 70/140,75/150, 80/143, 80/156, 80/172, 92/188, 95/191,105/191,100/200

Conical twin screw featurs:

1:Compressing rate of screw can be designed according to different raw materials and products       

2:Twin screw and barrel made: CINCINNATI, BATTENFELD, KRUSSMAFFEI, BAUSANO and AMUT model spares.

Application:      

1)PVC sheet extrusion line,From film to plate, from the wafer to the thick slices, calcium powder content more than 5% ;

2)PVC/PPR pipe extrusion line,the calcium powder 80%-120%,150%-200%,250%-300%;       

3)PVC profile extrusion line; PVC/PE wood plastic extrusion line.       

4)PVC palletizing extrusion line,Transparent granulation(create particle good diaphaneity, not yellowing - no exhaust machine barrel),grey granulation (particle good color and luster, full - machine barrel with exhaust)      

5)PVC foam production line,PVC free foaming, crust foaming,half crust foaming;

Screw barrel technical details

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
Double-alloy level	Level A - containing Tungsten of 40%    Level B - containing tungsten of 25%   Level C - containing tungsten of 9.5%
Surface Treatment	Heat Treatment High Frequency Treatment Nitriding treatment(120 Hours) Depth of Nitrided Layer: 0.5-0.8 mm                              Hardness of Nitrided Layer: 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 Nickel alloy plating.treatment: Bimetallic Barrel/Cylinder: Centrifugal Casting (Inlay Alloy)      Bimetallic Screw: Plasma Alloy Coating Spraying Depth of Bimetallic Layer: >2mm                                  Hardness of Bimetallic Layer: HRC55°-72°
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
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
General Terms	Means of transport: Ocean,Air,Express Production time: About 25 days after we receive the deposit and lead time will different according to the order quantity!

Our screw and barrel processing flow

Customer order----Product design(customer drawing)---Production flow arrangement----Material Procurement---Hardening and tempering--

--Drilling---Rough turning---Rough thread rolling(Alloy spray welding)---alignment---Fine thread rolling---Mixing---Alignment---High frequency treatment---Alignment---Polishing---Grinding----120 hours Nittriding treatment---Acid piclking----Polishing---Chrome plating----O.D.Grinding---Packaging and Shipping.

Our screw and barrel processing flow

Customer order----Product design(customer drawing)---Production flow arrangement----Material Procurement---Hardening and tempering--

--Drilling---Rough turning---Rough thread rolling(Alloy spray welding)---alignment---Fine thread rolling---Mixing---Alignment---High frequency treatment---Alignment---Polishing---Grinding----120 hours Nittriding treatment---Acid piclking----Polishing---Chrome plating----O.D.Grinding---Packaging and Shipping.

Package details

1st, products (screws or barrels) will be brushed anti-corrosive oil   
2nd,packed with film,brush oil

3rd,packed in the wooden case Bimetallic Conical Twin Scerw& Barrel for PVC Extrusion Machine