1.The injection screw should be constructed of materials that provideabalance of abrasion resistance and corrosion protection. Optionsforconstruction include 38 CrMoAlA nitrided steel with abrasionresistantcoating such as bimetallic or Tunsten carbide on screw flights.
2.The screw flights should not be chrome plated since reinforcedorfilled composites will abrade or chip the plating in a short period.
Screw Barrel show:
We-HUACHEN bimetalilc standard:
1. Standard grade: 38CrMoAlA + nitriding 96 hours
2. Bimetallic grade: 38CrMoAlA + bimetallic alloy
3. HC-A grade: Tungsten carbide 40%
4. HC-B grade: Tungsten carbide 25%
5. HC-C grade: Tungsten carbide 15%
We-HUACHEN Bimtallilc Product Show:
Second hand extruder machine bimetallic screw barrel
Injection molding screw we process as the following technical parameter:
sheet 1
| Base 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
| 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(in Scrap orGranule),etc |
Sheet 3
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 |
| Bimetallic treatment | Bimetallic Barrel/Cylinder: Centrifugal Casting (InlayAlloy) Bimetallic Screw: Plasma Alloy Coating Spraying Depth of Bimetallic Layer: >2mm Hardness of Bimetallic Layer:HRC55°-72° |
sheet4
| 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 |
Various kinds of screw tips,non-return valve,check rings. We also accept small order like several screw tips or others.
About Huachen
Factory Show:
Machines&processing show:
Nitrogen oven & Bimetallic Oven show:
Testing:
Certificate:
Our packing:
About HUACHEN1.Our Strength: We have an experience of more than 20year of manufacturing and designing Plastic machines, varied Screws and Barrels and spares.We concentrate on improving quality, updating designand enhancing service.
2.Our products: Screws Barrels for Injection, Extrusion, and Blow Molding applications; relevant accessories; plastic machinery.
3.Location advantage: Located in China's Screw Town - Jintang Town in Zhoushan City, near to Ningbo Port and Shanghai Port.
4.Market areas: Global sales network reaching South America, Eastern Europe, Southeast Asia, Africa, Oceania and the Middle East.
5.We promise: We assure the customer benefits, We provide competitive price, We Emphasis On Cooperation
Please contact us,if you have any questions. Mail,phone,skype all are OK.
My skype:lillianyao0421
