How to solve the burr in laser cutting during sheet metal processing

小梁

Laser cutting machines have been widely used in the sheet metal processing industry. Because of its high efficiency, good quality of finished products, and flexible processing, it is increasingly favored by the sheet metal processing industry.

However, some customers experienced burrs on the sheet metal workpieces when using the laser cutting machine. Many people think that there is a problem with the quality of the laser cutting machine itself, is this true?Is the burr of the cutting part necessarily a quality problem of the cutting machine?

In addition to the quality problems of the laser cutting machine itself, most of the burrs are caused by the wrong operation method of the operator or the improper maintenance and maintenance of the cutting machine. In addition, there is a major cause of burrs, which is the auxiliary gas problem. In laser cutting, the laser beam impacts the surface of the workpiece, generating extremely high temperatures, which rapidly vaporize and evaporate the surface of the workpiece, thereby cutting metal.

The function of the auxiliary gas is to blow off the slag remaining on the surface of the workpiece after the workpiece is vaporized by the laser beam. If this is not done, a layer of attached burrs will form on the cut surface of the workpiece as the slag cools.

Below, we will summarize several common causes of burrs and corresponding solutions to help you avoid burrs on laser-cut sheet metal workpieces as much as possible.

First reason:The focus of the laser beam of the laser cutting machine is deviated, so that the energy cannot be concentrated on the workpiece in a correct way, and the workpiece cannot be fully vaporized, resulting in an increase in slag, which is not easy to blow away, so burrs are more likely to occur.

Solution: According to the offset position of the laser beam focus adjustment, the laser beam focus position is adjusted to the best position.

Second reason:The power output of the laser cutter is insufficient to effectively vaporize the metal, resulting in excessive slag and burrs.

Solution: Check whether the laser cutting machine is working normally. If it is not normal, it needs to be repaired and maintained in time; if it is normal, also check whether the output value is correct.

Third reason:The cutting speed of the laser cutting machine is too slow, which destroys the surface quality of the cutting sheet and produces burrs. Solution: Adjust the cutting line speed of the laser cutting machine accordingly, increase the speed, and make it reach the normal value.

Fourth reason:The auxiliary gas of the laser machine does not meet the required purity, which may also cause burrs on the workpiece.

Solution: Replace the auxiliary gas with a higher purity gas.

Fifth reason:Because the laser machine works for a long time, the equipment will appear abnormal operating state, and there will be burrs.

Solution: Turn off the laser cutter and restart it after a while to give it a good rest.

The reasons and solutions for the above-mentioned common glitches are timely. Only when we understand the root cause of the problem, we can effectively solve it. Want to learn more about sheet metal processing? Platinum Shield will continue to give you more knowledge about sheet metal processing.

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