PVC Parallel twin screw
Technical Parameters:
sheet 1
Materials of Parallel twin screw and barrelBase Materials | 1)38CrMoAlA(JIS SACM645) 2)Cr12MOV(JIS SKD-11) 3)4Cr5MoSiV1(JIS SKD-61)4)42CrMo(AISI 4140) |
Bimetallic | 1)Fe-based alloy 2)Ni-based alloy 3)Co-based alloy 4)NiCo-based alloy 5)Tungsten carbide/Wolfram carbide |
Tungsten Carbide | Level A - containing Tungsten of 40% Level B - containing tungsten of 25% Level C - containing tungsten of9.5% |
Sheet 2
Plastic material applicationPlstic 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 orGranule),etc |
Sheet 3
Surface TreatmentHeat 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 |
Bimetallic treatment | Bimetallic Screw: Plasma Alloy Coating Spraying Depth of Bimetallic Layer: >2mm Hardness of Bimetallic Layer:HRC55°-72° |
sheet4
Basic informationRoughness 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
|
Production steps:
Custome Order--Product Design(Customer Drawing)—Production Flow Arrangement—Material Procurement—Hardening&Tempering—Drilling—Rough Turning—Rough Thread Rolling (AlloyS pray Welding)—Alignment—Fine Thread Rolling—Mixing—Alignment—High Frequency Treatment—Alignment—Polishing—Grinding—120 Hours Nitriding Treatment—Acid Piclking—Polishing—Chrome Plating—O.D.Grinding—Packaging&Shipping
Processing
Advantages of Parallel twin screw:
--Good plasticization, high productivity, small shear force,stable pressure,less wear and tear and low cost.
--Good at feeding,especially for powder.And also have the superiority in bad heat-stability plastic materials and mixture palstic materials.
Applicatio of Parallel twin screws:
Parallel twin-screw and barrel is successfully applied in
PVC plate,pipe,profile,pelletand mould, at the same time, it solved the technical problem of low foaming, high foaming,high filling, wear and corrosion.
Compare to single screw barrel,
It is betterthan
single screw barrel in the followings: mixture materials,exhausting,self-cleaning.
Compare to conical twin screw,
Paralleltwin-screw and barrel is widely used in PVC products processing,especially for the production of PVC products with the output over 350Kg /h, because theparallel twin-screw and barrel costs less than conical twin-
screw and barrel while it has more mature technology.
Materials and products:
Our Quality Control:
We strictly control our quality as the ISO 9001:2008. We test our products from the raw materials to final product.
Quality is our main forte and we follow varied industry policies for achieving it. Furthermore, our quality consciousness has ensured that we manufacture premium qualityScrew & Barrel for the clients.We conduct various quality tests on our range that start from the time of procuring raw material till the final supply of products. Apart from this, our quality controllers continuously check the entire range on different parameters so as to ensure its defect-free nature. Our quality testing laboratory is well-equipped with modern machines and technology that are necessaryfor bulk production.
Our certificate of ISO 9001:2008
Product show:
About HUACHEN :
Our Strength: We have an experience of more than 20 year of manufacturing and designing Plastic machines,varied Screws and Barrels and spares. We concentrate on improving quality, updating design and enhancing service.
Our products:Screws Barrels for Injection, Extrusion, and
Blow Molding applications; relevant accessories(such as die head, gearbox, filter screen changer and so on); plastic processing
machinery.
Location advantage: Near Ningbo/Shanghai Port.
Market areas: global sales network reaching South America, Eastern Europe, Southeast Asia, Africa, Oceania and the Mid-East
We promise: We assure the customer benefits, provide competitive price, emphasis On Cooperation.
HUACHEN COMPANY
Please contact us,if you have any questions. Mail,phone,skype all are OK.
Myskype:lillianyao0421