1, 38CrMoAlA base material; 2, bimetallic powder treatment; 3, with high plasticizing capacity and molding function
With the perfect design, our injection molding screw barrel is able to realize the high plasticizing capacity and molding function of your machine.
Specifications:
Base Material | 38CrMoAlA, 40Cr, 42CrMo, SKD-61, Stainless Steel, etc |
Surface Coating | Nitriding, Bimetallic, Hard Chrome Plated, Quenching, ect. |
Technical Data | Nitriding thickness: 0.5~0.8mm Nitriding hardness: >900HV Surface roughness: Rao0.4/m Surface Straightness:0.015mm/m |
Size | As per customer’s drawing |
Usage | On injection molding machine |
Packing | Standard export wooden case |
All types of custom design screw and barrel components, to meet different customer requirements.
Since the injection molding screw tip is always under the higher wear and corrosion working condition than screw body. Per customer’s request, we will also provide the screw tip with different material from screw body,
like SKD61 or bimetallic (alloy) coating.
Bimetallic screw barrel are also available:
Four kinds of alloys for barrels:
Characteristic and Property | EJS01 Alloy | EJS02 Alloy | EJS03 Alloy | EJS04 Alloy | |
Wear resistance | very good | good | very good | excellent | |
Corrosion resistance | good | very good | very good | very good | |
Alloy | Fe+Ni+Cr+B | Ni+Cr+Co+B | Ni+Cr+Co+V+B | Ni+Cr+Wc+Co+B | |
Hardness (HRC) | 58 ~ 64 | 50 ~ 58 | 56 ~ 64 | 58 ~ 67 | |
Temperature area(°C) | ≤400 | ≤450 | ≤450 | ≤600 | |
Modulus of elasticity (kgf / mm) | 19500 | 21000 | |||
Cofficient thermal Expansion (/°C) | RT-250°C | 11.0×10-6 | 11.0×10-6 | 11.5×10-6 | 11×10-6 |
RT-400°C | 11.4×10-6 | 11.4×10-6 | 12.4×10-6 | 12×10-6 | |
The specification of bimetallic screw barrel:
Diameter | Length | The roughness of surface | The straightness | |
Barrel | 15 ~ 250mm | ≤ 4000mm | Ra0.4μm | 0.015mm/m |
Screw | 15 ~ 350mm | ≤ 8000mm | Ra0.4μm | 0.015mm/m |
single screw barrel for injection molding machine
