Laser cutting procedure explained technically
Laser cutting is a very common production method in sheet metal stamping. Its basic principle is to use a lens to focus the laser into a high-energy beam (similar to a magnifying glass) to melt the metal part exposed to the light. The molten part is then blown away with an air nozzle, completing the cutting process. Burrs form during the process of blowing away the molten material. For example, incomplete melting can increase slag, and insufficient air pressure can fail to blow away the slag completely, resulting in burrs. Of course, these are not the only causes of burrs. Targeted solutions are necessary to address the issue.
Causes and Solutions for Burrs in Laser Cutting Processing
Cause 1:
The position of the laser cutter’s focal point is offset above or below the material, causing the energy to be unevenly distributed on the workpiece. This prevents sufficient vaporization of the material, increases slag, and makes it difficult to remove, leading to burr formation.
Solution:
Adjust the focal point of the laser to the optimal position based on the offset.
Cause 2:
The laser cutter’s power is insufficient to vaporize the metal effectively, resulting in excessive slag and burrs.
Solution:
Check if the laser cutter is operating normally. If not, perform timely repairs. If it is functioning properly, verify whether the power output settings are correct.
Cause 3:
The cutting speed of the laser cutter is too slow, damaging the surface quality of the cutting edge and causing burrs.
Solution:
Adjust the cutting speed to meet standard values promptly.
Cause 4:
The purity of the auxiliary gas used in the laser cutter does not meet the required standard, leading to burrs on the workpiece.
Solution:
Replace the auxiliary gas with a higher-purity option.
Cause 5:
The laser cutter has been running for an extended period, causing equipment instability and resulting in burrs.
Solution:
Turn off the laser cutter and let it rest before restarting to ensure adequate recovery time.
The above are common causes of burrs in laser cutting and their corresponding solutions. In fact, as long as laser cutting is performed correctly and the material thickness is within the machine’s capability, burr issues are unlikely to occur. Most problems arise from inattention or lack of experience. As long as manufacturers carefully monitor the processing, burr problems can be effectively avoided.
For more information on metal surface treatment processes, stay updated with Mulan Group Sheet Metal Fabrication, a leading sheet metal manufacturing service provider in China. We continuously update industry information for user reference.
