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Quick Details

Model Number: 5
Brand Name: Sheen
Place of Origin: China (Mainland)
nitriding treatment: alloy material

Specifications

Injection screw and barrel

Specification:    

Screw diameter:Φ20mm-Φ220mm   

Mould clamping force:25-38000KN   

Injection capacity:30-50000g

Screw can be designed according to different plastic material and nozzle!

( wear-resistance corrosion- resistance, high temperature resistance, high pressure resistance)

 As per customers' demand,we can supply below:

       

1:PMMA Screw,Bakelite Screw,PVC Screw,PA Nylon+GF Screw,PC Screw

       

2:All kinds of accessories, a plastic head, apron, shoot flange nuts,nozzles,end caps.pistons etc

Screw barrel Material

Material

Heat treatment

38CrMoALA,SACM645,42CrMo,DIN1.8550,SAE8550

Nitrided treatment

42CrMo, AISI4140

Hard-chrome plating

Cr12Mov,SKD11,SKD61,

High Frequency quenching

4Cr5MoSiV1,SKD-11,SKD-61

Bimetallic frist,then nitrided

YPT72, 4Cr5MoSiV1

HVOF

GH113

Temepture:300-1400

Base material 38CrMoALA chemical composition and main feture

This kind of material is made in China from SHANGHAI BAOSTEEL COMPANY.

C

Si

Mn

S

P

Cr

Al

Ni

Cu

Mo

0.35-0.42

0.20-0.45

0.30-0.60

<0.035

<0.035

 1.35-1.65

 0.70-1.10

 <0.030

 <0.030

 0.15-0.25

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.

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