During cutting metal plates, there may be problems with cutting discontinuities, which will cause defects or burrs. To improve cutting quality, we need to find out the reasons and fix it.

Possible Reasons

Unreasonable programming

In general, unreasonable programming may cause discontinuous cutting. The cutting head is very close to the surface of the workpiece during the thin plate process. When cutting multiple parts, the laser program defaults to scribing first and then cutting to avoid unnecessary damage to the cutting head and the machine tool caused by the collision of the cutting head with the cut metal sheet. If the closed area is not closed when the laser program is compiled, the partial steel plate will be connected to the whole after cutting, and manual cutting will easily damage the sample plate and cause it to be scrapped.

Replacement of the auxiliary gas

During the working process of the fiber laser cutting machine, the replacement of the auxiliary gas also causes the discontinuity of the cutting. During the processing, the auxiliary gas mainly blows the molten metal out of the slit, and when the auxiliary gas is used, the device automatically stops moving. After the gas is replaced, the cutting is continued, so that the cutting trajectory is slightly different from the trajectory during parking, resulting in discontinuity of the cutting trajectory.The ventilation of the auxiliary gas during the thin plate cutting process will also cause the discontinuity of the cutting. During the process of processing, the auxiliary gas mainly blows the molten metal out of the slit. When the auxiliary gas is used up, the equipment stops automatically, and continues cutting after the gas is replaced. In this way, the cutting track is slightly different from the track when the machine is stopped and causes the discontinuity of the cutting track.

How to solve it

1. For the discontinuity of cutting caused by programming errors, the designer has high professional quality and should be carefully checked during the process of preparing the cutting program, avoid mistakes.

2. For the problem of cutting discontinuity caused by the replacement of auxiliary gas, after the accumulation of practical experience, when re-cutting, we should reduce the cutting speed to 5 percent of the normal cutting speed, and press the start button and speed. Press to continue cutting.

3. When the fiber laser cutting machine suddenly stops and restarts during the work, the cutting point interface will be discontinuous. Therefore, in the actual work, the instructions should be strictly followed to avoid the cutting machine from running due to the wrong operation.

Regardless of whether it is carbon steel, stainless steel, or titanium alloy materials, the continuity of the cutting track can be achieved through these methods, so that the workpiece is completely connected, with high precision and quality.