In modern manufacturing, laser cutting machines have become an important tool in the field of metal processing due to their high precision, high speed and high flexibility. However, any advanced equipment may encounter various faults during use. This article will introduce the common faults of laser cutting machines and their solutions in detail to help users better maintain and use this important equipment.

1. The laser cutting machine cannot start

Power supply problem

Check the power connection: Make sure the power plug is firmly inserted into the socket and the power switch is on. If the power cord is damaged, it should be replaced in time.

Check the emergency stop button: Sometimes the emergency stop button is accidentally pressed, causing the device to fail to start. Check and release the emergency stop button.

Control system failure

Restart the control system: Try to restart the control system to see if it can return to normal. If multiple restarts are ineffective, it may be an internal fault in the control system and you need to contact the manufacturer for repair.

Check the software settings: Make sure the parameters of the control software are set correctly, especially key parameters such as laser power and gas pressure.

2. Cutting quality decreases

Lens contamination

Clean the lens: Use a special lens paper or cotton swab to dip in an appropriate amount of ethanol and gently wipe the focusing mirror and reflector to ensure that there is no dust and stains.

Replace the lens regularly: For lenses that have been used for a long time, even if the surface looks clean, the cutting quality may be affected by wear. It is recommended to replace them regularly.

Focal length offset

Calibrate the focal length: According to the actual processing needs, adjust the focal length of the cutting head to ensure the accurate focus position. You can use test materials to perform multiple cutting tests to find the focal length.

Check the cutting head height: Make sure that the distance between the cutting head and the workpiece is appropriate to avoid being too close or too far to affect the cutting effect.

Auxiliary gas problem

Check the gas pressure: Make sure that the pressure of the auxiliary gas (such as nitrogen, oxygen or compressed air) is stable and sufficient. Unstable gas supply will affect the cutting quality.

Replace the filter element: The filter element in the auxiliary gas system needs to be replaced regularly, usually every three months, to prevent impurities from entering the laser system.

3. Cutting is not transparent

Insufficient laser power

Adjust the laser power: According to the thickness and type of the material, increase the laser power appropriately. But be careful not to exceed the output power of the equipment.

Check the laser status: If the laser is aged or damaged, it may cause a drop in power. At this time, you need to contact the manufacturer for repair or replacement.

Lens contamination or damage

Clean or replace the lens: As mentioned above, clean the lens regularly and replace it with a new one when necessary.

Check the optical path: Make sure that the beam transmission path is not offset or blocked to ensure the stability and strength of the laser beam.

Material problem

Select the right material: Make sure that the thickness and type of the selected material are suitable for the processing capacity of the current equipment. Too thick materials may require a higher power laser.

Pre-process the material: For materials with oil or oxide layer on the surface, they can be cleaned or polished first to improve the cutting effect.

4. Equipment alarm

Water temperature is too high

Check the cooling system: Make sure that the cooling water circulation is normal, the water in the water tank is sufficient, and the water pump is working properly. If any abnormality is found, deal with it in time.

Clean the radiator: Clean the radiator in the laser and electrical cabinet regularly to prevent dust accumulation from affecting the heat dissipation effect.

Abnormal gas pressure

Check the gas cylinder: Make sure there is enough gas in the gas cylinder and the gas cylinder valve is in the open state.

Check the gas pipeline: Check whether there is any leakage in the gas pipeline, especially at the joints. If there is a leak, repair or replace it in time.

Other alarm information

Check the manual: When the device alarms, first check the fault code table in the operation manual to understand the specific meaning.

Contact technical support: For complex faults or problems that cannot be solved by yourself, it is recommended to contact the technical support team of the laser cutting machine manufacturer for professional help.

As an indispensable and important tool in modern manufacturing, the efficient operation of laser cutting machines is inseparable from scientific maintenance and management. Through daily maintenance, regular inspections, troubleshooting and repairs, as well as strict operating specifications and training, the service life of the equipment can be effectively extended, work efficiency can be improved, and production can be ensured to proceed smoothly. I hope that the common faults and solutions provided in this article can help users better use laser cutting machines and create greater value for enterprises.