Comprehensive Guide to Underwater Welding Square Tube and Welding Rectangular Tube

Underwater welding of welding square tube and welding rectangular tube is a specialized task that requires careful preparation, the right equipment, and strict safety measures. If you are looking to perform underwater tube welding efficiently and safely, this guide covers everything you need to know.

1. Choosing the Right Equipment

For underwater welding square tube and welding rectangular tube, all welding machines, power sources, and tools must be fully insulated and waterproof. Ensure the insulation resistance is at least 1 MΩ. Equipment should also be resistant to saltwater corrosion, atmospheric corrosion, and long-term exposure to harsh underwater environments. High-quality tools reduce the risk of accidents and improve welding quality.

2. Safe Welding Circuit Setup

When performing wet underwater welding, install a dedicated automatic switch box to protect the circuit. For dry or partially dry welding, your system should include emergency alarms and power cut-off mechanisms. These safety features are essential for any welding square tube or welding rectangular tube project.

3. Electrode Protection

Electrodes must be waterproof and fully insulated to ensure that electrical contact occurs only at the welding arc. Proper electrode insulation is critical to prevent electrical hazards while working with welding square tube and welding rectangular tube.

4. Personal Protective Equipment (PPE)

Divers should always wear specialized protective suits, gloves, and helmets designed for underwater welding. Proper PPE is essential to ensure safety and reduce the risk of injuries during welding square tube or welding rectangular tube operations.

5. Using the Correct Power Supply

Underwater arcs create bubbles and cavities due to water evaporation. This requires a higher arc initiation voltage than on land. Always use direct current (DC) for underwater welding, with an open-circuit voltage of 50–80V. Avoid alternating current (AC), as it increases the risk of electric shock during welding square tube and welding rectangular tube.

6. Grounding and Control Devices

All control devices in contact with divers must use isolation transformers and have overload protection. Welding machines must be properly grounded, with grounding terminals polished to prevent corrosion. This ensures safe and stable operation for any welding square tube or welding rectangular tube project.

7. Electrode Replacement Safety

During welding, electrodes frequently need replacement. Always cut off the power and issue a clear signal before changing electrodes underwater. Following this procedure prevents electric shocks and maintains safety while welding welding square tube or welding rectangular tube.

8. Proper Positioning and Safety Precautions

Never position yourself between the grounding point and the welding point. Keep hands and tools away from the workpiece to avoid electric shocks or damage to diving equipment. Maintaining correct positioning is critical for safe underwater welding square tube and welding rectangular tube operations.

Conclusion

Mastering the safety measures and operational procedures for welding square tube and welding rectangular tube ensures efficient, high-quality welding while protecting divers and equipment. By following this guide, underwater welding projects can be completed safely and effectively.