Why are there burrs on the edge of the workpiece after cutting with a laser cutting machine? ‌

As an indispensable processing equipment in modern industry, laser cutting machines are widely used in the cutting of metal sheets with their high precision and high efficiency. However, in actual applications, many users find that burrs sometimes appear on the edge of the workpiece after cutting with a laser cutting machine, which not only affects the accuracy and surface quality of the workpiece, but also may reduce product quality, causing many inconveniences to subsequent processing and acceptance. This article will discuss in depth the reasons for burrs on the edge of the workpiece after cutting with a laser cutting machine, and propose corresponding solutions.

There are many reasons for burrs on the edge of the workpiece after cutting with a laser cutting machine, mainly including the following points:

1. The laser power does not match the cutting speed

The power and cutting speed of the laser cutting machine are key factors affecting the cutting quality. When the laser power is insufficient, the metal cannot be effectively vaporized, resulting in excessive slag and burrs on the cutting edge. At the same time, if the cutting speed is too fast, the laser beam stays on the material surface for too short a time, and the smoothness of the cutting edge cannot be ensured. Therefore, in actual operation, the laser power and cutting speed should be reasonably adjusted according to the type, thickness and cutting requirements of the material to achieve the best cutting effect.

2. Incorrect laser focus position

The laser focus is the position where the laser beam energy is most concentrated, which is crucial to the cutting quality. If the upper and lower positions of the laser focus are incorrect, it will lead to uneven energy distribution, the workpiece will not be completely vaporized, the slag will increase, it will not be easy to blow out, and it will be more likely to produce burrs. Therefore, before laser cutting, the focus position test should be carried out, and adjustments should be made according to the test results to ensure that the laser focus is located at the optimal cutting position of the workpiece.

3. Insufficient purity and pressure of cutting gas

During laser cutting, the purity and pressure of auxiliary gas also have an important impact on the cutting quality. If the purity of the cutting gas is not high enough or the pressure is insufficient, it will affect the cutting effect of the laser beam on the material and cause burrs on the cutting edge. Therefore, when selecting cutting gas, high-purity gas should be given priority, and the gas pressure should be ensured to meet the cutting requirements.

4. Improper equipment maintenance and long working time

As a precision equipment, the laser cutting machine needs regular maintenance and maintenance. If the equipment is not properly maintained, such as lens contamination, nozzle clogging, etc., it will affect the transmission and focusing effect of the laser beam, resulting in a decrease in cutting quality. In addition, if the equipment works for too long, it will also make the working state of the equipment unstable, thereby increasing the risk of burrs on the cutting edge. Therefore, users should regularly maintain and service the laser cutting machine to ensure the normal operation of the equipment.

In view of the above reasons, we can take the following measures to reduce the burrs on the edge of the workpiece after the laser cutting machine cuts:

According to the type, thickness and cutting requirements of the material, reasonably adjust the laser power and cutting speed to ensure the stability and consistency of the cutting quality.

Before laser cutting, perform a focus position test and adjust it according to the test results to ensure that the laser focus is at the optimal cutting position of the workpiece.

Select a high-purity cutting gas and ensure that the gas pressure meets the cutting requirements. At the same time, regularly replace and purify the cutting gas to avoid the impact of gas pollution on the cutting quality.

Regularly maintain and service the laser cutting machine, including cleaning the lens, replacing the nozzle, etc., to ensure the normal operation of the equipment and the stability of the cutting quality.

Reasonably arrange the working time of the equipment to avoid the unstable working state caused by long-term continuous operation of the equipment. After the equipment has been working for a period of time, it should be properly rested and restarted to ensure the best working condition of the equipment.

In summary, there are many reasons why burrs appear on the edge of the workpiece after cutting by the laser cutting machine, but as long as we reasonably adjust the laser power and cutting speed, correctly set the laser focus position, select high-purity cutting gas, regularly maintain and maintain the equipment, and reasonably arrange the working time of the equipment, we can effectively reduce the burrs on the cutting edge and improve the cutting quality and production efficiency.