Standard Startup Procedure for Fiber Laser Welding Machines

Laser welding machines integrate multiple core modules, including the laser source, water chiller, gas supply system, and wire feeder. At Xianming Laser, we believe that following a standardized startup sequence together with correct operating parameters is essential to ensure safe and stable machine operation, consistent welding quality, and extended service life of key components. Below is the standard startup procedure and parameter guidelines for portable fiber laser welding machine.

Power On the Machine and Release the Emergency Stop

Inspect the surrounding environment to ensure there are no safety hazards such as water leakage, electrical risks, loose wiring, or foreign objects.

Check that the power cables, electrical cabinet, and grounding system are securely connected.

Switch on the main power supply of the machine.

Rotate the emergency stop button clockwise to release it and confirm that the machine enters standby mode.

⚠️ Note: If the emergency stop is not released, the machine cannot be started.

Turn On the Water Chiller and Confirm Cooling System Operation

Switch on the water chiller power.

The chiller will begin its self-check process, and the “RUN” indicator light will flash, indicating normal operation.

Check the chiller display to ensure there are no alarms such as high temperature, abnormal water flow, or system faults.

Inspect the inlet and outlet water pipes to ensure they are firmly connected and free from leakage.

The water chiller provides constant-temperature cooling for the laser source and welding head and is a fundamental requirement for normal laser operation.

Turn On the Laser Source After Water Temperature Stabilizes

After the chiller starts running, the water temperature will gradually decrease and stabilize.

Proceed only after the water temperature reaches and remains within the preset range (recommended 22–26 °C, with 25 °C commonly used).

Switch on the laser source power and observe the status indicators or control panel to confirm the laser is in normal standby mode.

If any abnormal alarms occur, stop the operation immediately and troubleshoot the issue.

⚠️ Never power on the laser source when the chiller is not running or the water temperature has not reached the required range, as this may cause overheating or damage to the laser.

Open the Gas Supply and Check Gas Pressure

Open the external gas supply valve (such as nitrogen or argon shielding gas).

Ensure all gas hoses and connections are secure and free from leaks.

Check the pressure gauge and confirm that the gas pressure is stable within the recommended range of 0.2–0.4 MPa.

Test the gas output at the welding gun to ensure smooth and continuous flow.

Stable shielding gas effectively prevents weld oxidation and improves weld appearance and consistency.

Turn On the Wire Feeder (If Wire Feeding Is Required)

If the welding process requires filler wire, switch on the wire feeder.

Set the wire feeding speed according to the welding material and process requirements.

Check that the welding wire is properly installed and that the pressure of the feeding rollers is correctly adjusted.

Perform a wire feeding test to ensure smooth operation without slipping or blockage.

If autogenous welding is used and no filler wire is required, this step can be skipped.

Startup Completion Confirmation

After completing all the above steps, the laser welding machine is ready for normal operation. Operators can then set welding parameters according to specific process requirements and perform test welding as needed.

Conclusion

At Xianming Laser, we emphasize standardized and reliable operating procedures as the foundation of high-quality laser walder processing. Strictly following the correct startup sequence and maintaining proper cooling water temperature and shielding gas pressure are essential to ensuring safe operation, stable welding quality, and long-term equipment reliability. Operators are strongly advised to adhere to this procedure in daily production to achieve optimal welding performance and equipment longevity.