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Latest company case about ZSK320 laser cladding twin screw extruder barrel
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ZSK320 laser cladding twin screw extruder barrel

2025-04-18
Latest company case about ZSK320 laser cladding twin screw extruder barrel

​ZSK320 Barrel Upgrade: Laser-Clad Nickel-Tungsten Carbide Boosts Wear Resistance by 6x at Minimal Cost

​The ZSK320 extruder barrel, constructed from 45# carbon steel, features a ​1-2mm laser-clad nickel-tungsten carbide (Ni-WC)​​ coating on its inner walls, replacing traditional nitrided steel barrels. This innovation delivers:

  • ​6x higher wear resistance​
  • ​10-30% cost increase​ vs. conventional upgrades
  • ​Proven reliability: Zhitian’s proprietary laser cladding technology is standard on ZSK320 barrels.

​Core Challenges & Solutions​

​1. High-Precision Machining for Large Barrels​

​Challenges:

  • Structural rigidity issues in long-span machining.
  • Thermal sensitivity causing micro-deformations.

​Solutions:

  • Heavy-duty CNC machines with vibration-damping systems.
  • Precision machining in 20±1°C temperature-controlled environments.

​2. Laser Cladding Thermal Deformation Control​

​Challenges:

  • Thermal gradients and stress imbalances.
  • Risk of warping or coating cracking.

​Solutions:

  • Preheating (200-300°C) + zone-based cladding + gradual cooling.
  • CTE-matched Ni-WC alloy and post-cladding stress-relief annealing.

​3. Industry Barriers for Small Manufacturers​

​Challenges:

  • High costs of ultra-large CNC machines and specialized expertise.

​Zhitian’s Answer:

  • ​Cost-effective upgrades: Laser-clad 45# steel reduces material costs.
  • ​Open-access services: OEM solutions for ZSK320 and larger models.

​Keywords:

Laser cladding screw barrel

Twin-screw extruder barrel

Screw barrel wear-resistant coating

ZSK320 screw barrel upgrade

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