In nuclear energy, chemical processing, and other high-stakes industries, shielded pumps play a vital role in ensuring the safe and efficient transfer of critical fluids. The rotor assembly within these pumps demands exceptional sealing performance and structural stability — qualities that traditional welding methods often struggle to achieve due to deformation, uneven welds, and inconsistent quality.

To address these challenges, Han’s Laser has developed an advanced Shielded Pump Laser Welding System, an automated, high-precision welding solution engineered to meet the stringent demands of high-end shielded pump manufacturing.

System Overview

The Shielded Pump Laser Welding System is specifically designed for rotor component welding in shielded pumps used in nuclear, chemical, and energy industries. By leveraging high-precision laser processing, it delivers deeply penetrated, low-deformation welds that ensure both strength and hermetic sealing.

During operation, a focused laser beam melts the contact surfaces between the rotor core and the protective sleeve, while an automated motion module controls rotational or translational movement to form a continuous weld seam. Shielding gas protects the molten pool from oxidation, and an intelligent cooling unit minimizes thermal impact. Real-time sensors monitor welding parameters to ensure consistent quality through closed-loop feedback control.

System Advantages

1.High-Precision Welding and Modular Design

The laser welding machine integrates a fiber laser (1080 nm wavelength) optimized for metals with high reflectivity. Core components include a fiber laser source, wobble welding head, six-axis robot, hollow rotary platform, and smart control system.

This configuration supports a wide range of welding trajectories — including dots, lines, circles, squares, and custom geometric patterns — delivering uniform weld morphology, faster speeds, and higher positional accuracy than conventional techniques.

2.Flexible Programming and Strong Compatibility

The six-axis robotic arm supports manual drag-teaching, allowing operators to guide the arm by hand to specific weld points for quick path setup. This feature improves flexibility and supports multiple product variants, making the system ideal for diverse production environments.

3.Intelligent Clamping and Stability Control

An electric chuck with torque-based clamping ensures safe and efficient handling of round components of various diameters and weights. The opposite end features a precision tailstock for concentric alignment, preventing workpiece deformation and maintaining axial stability during welding.

Core Application Fields

Han’s Laser Shielded Pump Laser Welding Machine is designed for mission-critical manufacturing sectors where reliability, corrosion resistance, and sealing integrity are non-negotiable. Its proven performance extends across the following industries:

• Nuclear Power: Provides welds that meet nuclear safety standards, ensuring resistance to radiation and high pressure in main coolant pumps.
• Petrochemical Industry: Enables corrosion-resistant, leak-proof welding for pumps handling aggressive or hazardous media.
• Environmental Protection: Used in wastewater treatment and seawater desalination shielded pumps requiring anti-corrosion and mass production capabilities.
• New Energy: Ensures low hydrogen content welding for hydrogen circulation pumps and clean, dust-free joints for lithium battery applications.
• Shipbuilding and Heavy Industry: Delivers fatigue-resistant and seawater-proof welds for marine shielded pumps operating under vibration and salt exposure.

Conclusion

With its automation, precision control, and adaptability, Han’s Laser Shielded Pump Laser Welding System sets a new benchmark in shielded pump manufacturing. It ensures that every weld meets the highest standards of strength, safety, and reliability—empowering industries to operate with confidence in the world’s most demanding environments.

For more information about Han’s Laser Shielded Pump Laser Welding System and customized welding automation solutions, contact Han’s Laser.