Hard Chrome Plating Screw Barrel

Looking for a solution to increase the durability of your plastic extrusion machine? Our hard chrome plated screw barrels are the answer! Our custom-made barrels are designed to provide optimal performance and extend the lifespan of your machine. Contact us to learn more.

Hard chrome plating screw barrel丨enhance durability of your extrusion machine

The screw barrel chrome plating process is an effective way to prevent wear and corrosion, which is widely used in injection moulding machines when processing glass-filled fibres and in extrusion machines when processing resins containing high fillers. We use chrome plating for both conical twin screws and parallel twin screws to process PVC and PE products with very high fill levels. Hard chrome plated screws are made from 38CrMoAlA nitrided steel. Hard chrome plating is applied to the screw’s most damaged and worn areas. It completely covers the screw base, screw flights, and screw surface.

Chrome plating on our screws is 0.05-0.10 mm thick and does not simply adhere to the surface of the screw, but is firmly bonded to the screw base. We must ensure that the chrome plating does not chip off and be scrapped because of the processing strength of highly filled PVC and PE products.

We use screw chrome plating in conjunction with our bimetallic alloy screw process to give your highly filled special screws better corrosion and wear resistance.

Advantages of HUACHEN hard chrome plating screw barrel

1. Improving the corrosion resistance of the screw

2. improve screw wear resistance

3. Processed materials scorch less due to reduced polymer viscosity

4. Faster screw cleaning.

Application of Hard chrome plating screw barrel

1. PVC conical twin screw for foam sheet, board extrusion

2. PVC conical twin screw for window or door profile extrusion

3. PVC conical twin screw for siding and wall panels, ceiling extrusion

4. WPC conical twin screw for planks, door sheets, board extrusion

5. SPC conical twin screw for rigid vinyl plank sheet board extrusion

6. Parallel twin screw barrel

7. Blown film screw barrel

8. Injection moulding screw barrel

Materials

1) Based materials: Premium 38CrMoAlA; 2) Plasma nitriding surface hardness: HV 1000-1100; 3) Plasma nitriding depth: ≥ 0.7 mm; 4) Nitriding fragility: less than Grade I.; 5) Surface Roughness: Ra 0.4 μm; 6) Screw Linearity: ≤ 0.015mm; 7) Hard chrome plating layer thickness (optional): 0.05-0.10 mm; 8) Hard chrome plating layer hardness (optional): ≥ HV 950.

>>Learn more about our hard chrome plating screw barrel parameters

Production time

Complete set of screw barrel within 33-40 days depending on the complexity of the part.

HUACHEN Screw has been a leading hard chrome plating screw barrel manufacturer in Zhoushan Jintang since 1993. With many years of experience in the design and processing of plastic machinery extrusion parts, HUACHEN Screw can provide its customers with a wide range of services, including screw barrel design, rebuilding, modification, and upgrade. Our company has also successfully exported and supplied screw barrels to customers worldwide.

>>Learn More About Our Company