In the industrial welding sector, handheld dual-swing laser welding machines are gradually replacing traditional welding methods due to their efficiency and precision. However, these devices may encounter some operational issues during use, affecting productivity. Today, we will address several common problems faced by users, providing detailed troubleshooting and solutions to help you quickly resume production.
Common Troubleshooting and Solutions
1. “No Laser Output” Issue
When pressing the start button but finding no laser output, many operators may feel confused. However, the cause of this issue may not be complicated.
First, check whether the “Allow Laser Output” status on the HMI interface is enabled. Sometimes, operators may accidentally press the laser disable button, preventing the laser from emitting. Second, if the device triggers an alarm signal (e.g., abnormal water temperature or insufficient flow), the system will automatically lock the laser to protect core components. In this case, navigate to the alarm information interface to check specific prompts and resolve the issue.
Another easily overlooked problem is the improper locking of the fiber QBH head. During installation, align the red dot on the fiber head with the red dot on the QBH interface and rotate clockwise until a “click” sound confirms it is locked. If the connection is loose, laser transmission will be interrupted, resulting in no output.
2. Protective Lens Burnout or Contamination
The protective lens is a critical component of the laser welding machine, directly affecting beam quality and welding results. If the welding energy suddenly weakens or black spots or cracks appear on the lens surface, the lens may be contaminated or burned.
For daily maintenance, it is recommended to use a dust-free cotton swab dipped in a small amount of isopropyl alcohol to gently wipe the lens surface in one direction before work each day. Avoid wiping back and forth to prevent secondary contamination. When welding highly reflective materials (e.g., aluminum alloy), the purity of the shielding gas is crucial. It is recommended to use argon or nitrogen with a purity of 99% or higher and install oil-water filters in the gas path to prevent moisture and oil from adhering to the lens.
If the lens is already damaged, follow the steps in the manual to replace it. Pay attention to the convex and flat sides of the lens during disassembly, as incorrect installation may cause beam deviation and affect welding precision.
3. Shielding Gas Abnormal Alarm
During welding, if the system prompts “Insufficient Gas Pressure,” first check whether the gas cylinder pressure is below 0.5MPa or if there is a gas leak in the hose. Some users may opt for compressed air as shielding gas to save costs, but it may contain moisture and impurities, accelerating lens aging over time.
For welding highly reflective materials, argon gas is recommended as it effectively isolates oxygen, reducing welding spatter and oxidation. Additionally, solenoid valve malfunctions may also cause abnormal gas supply. Use the “Manual Gas Purge” function on the HMI interface to test whether the gas path is clear. If the issue persists, contact technical support to replace the solenoid valve.
4. Water Chiller Flow or Temperature Alarm
The stable operation of a laser welding machine relies on an efficient cooling system. If the water chiller frequently alarms, first check whether the water tank level is within the green safe zone. A low water level may cause the pump to run dry, affecting cooling performance.
Another common issue is dust accumulation on the condenser. It is recommended to remove the dust filter weekly and clean it with compressed air to ensure heat dissipation efficiency. In high-temperature environments during summer, the water temperature setting can be appropriately lowered (but not below 25°C) to prevent overheating.
Guheng Energy: Professional Laser Welding Equipment Manufacturer
As a leading domestic supplier of laser welding technology, Hangzhou Guheng Energy Technology Co., Ltd. specializes in the R&D and production of high-performance laser equipment. Its GSC-20CWD1 Handheld Dual-Swing Laser Welding Machine adopts patented dual-swing galvanometer technology, with adjustable spot size, making it suitable for welding various materials such as stainless steel, aluminum alloy, and copper. The device is equipped with an intelligent HMI touchscreen and built-in multiple sensors to monitor key parameters like lens temperature and gas pressure in real-time, ensuring stable and reliable welding.
Moreover, Guheng Energy has established a comprehensive nationwide technical service system, offering one-stop support from equipment installation, operation training, to after-sales maintenance, ensuring users have no worries.
Frequently Asked Questions (FAQ)
Q1: What daily maintenance is required for handheld dual-swing laser welding machines?
Daily maintenance mainly includes cleaning the protective lens daily, checking the water chiller filter weekly, and replacing the cooling water monthly (using deionized or distilled water).
Q2: Why do burn-throughs often occur at the start and end points during welding?
This is due to the acceleration and deceleration of hand movement, causing the laser to dwell longer at the start and end points. Adjust the “Power Ramp-Up/Ramp-Down” function on the HMI to gradually change the laser power and avoid localized overheating.
Q3: How long does the protective lens of Guheng’s laser welding machine typically last?
Under normal conditions, the protective lens lasts about 3-6 months. If the welding environment is dusty or the gas purity is insufficient, replacement frequency may need to increase.
Q4: How to handle E1 or E8 alarms on the device?
An E1 alarm indicates high water temperature; check whether the cooling water flow meets the standard (≥8L/min). An E8 alarm signals abnormal flow, which may be due to bent or clogged hoses. Inspect the pipeline and restart the device.
Choose Guheng for More Efficient Welding
Whether you are new to laser welding or an enterprise looking to improve productivity, Guheng Energy provides professional support. We offer a detailed “Handheld Laser Welding Machine Maintenance Manual” to ensure you fully master the device’s operation.
If you are considering upgrading your welding equipment, try Guheng’s GSC-20CWD1 and experience the efficiency and precision brought by dual-swing laser technology. For details, please contact us via our official website or customer service hotline. We are committed to serving you.
