Common Problems and Solutions When Laser Tube Cutting

The New Era of Metal Advertising Processing Tool – Fiber Laser Cutting Machine

The Cutting Accuracy Is Not High

Tube laser cutting machine cutting tubes, cutting accuracy is not high is a relatively common problem, the causes are mainly the following two points:

Improperly adjusted laser beam: laser beam parameters such as focal length, position and angle, directly determines the cutting accuracy. If the beam parameters are inaccurate, it will cause the cutting surface is not flat, and even cutting deviation. For example, the focal length deviation will make the laser energy distribution is not uniform, resulting in the cutting surface appears high and low; Angle deviation will make the cutting trajectory deviates from the predetermined path.

Pipe surface unevenness: the surface of the pipe has a significant impact on the focusing effect of the laser beam. If there is oil, oxidized layer or unevenness on the surface of the pipe, it will interfere with the normal focusing of the laser beam, thus affecting the cutting accuracy. Oil and oxidized layers will change the laser absorption characteristics of the pipe, while uneven surfaces will make the laser work differently at different positions.

Solutions

Precise adjustment of the laser beam: According to the material and wall thickness of the pipe, adjust the focus, position and angle of the laser beam precisely. Ensure that the laser beam is perpendicular to the pipe surface, so that the energy is evenly distributed in the cutting area to achieve the best cutting effect.

Pre-treatment of pipe surface: Before cutting, make sure to clean the surface of the pipe, remove oil and oxidized layer, and ensure that the surface of the pipe is smooth and flat. For uneven pipe, grinding, polishing and other pretreatment operations can be carried out to provide good conditions for high-precision cutting.

The Cutting Speed Is Not Stable

Unstable cutting speed is also a common problem in laser tube cutting, cutting speed is too fast, the pipe is difficult to completely cut off; too slow will cause a waste of time and energy. The reasons are as follows:

Laser power instability: laser power is the key factor affecting the cutting speed, power fluctuations will directly lead to unstable cutting speed. Such as laser generator internal components aging, poor heat dissipation, etc., may trigger power fluctuations.

Uneven pipe material: Different materials have different absorption ability of the laser, if the pipe material is not uniform, it will make the energy absorption in the cutting process is not stable, which will lead to unstable cutting speed.

Solutions

Check the laser generator: Regularly carry out comprehensive inspection and maintenance of the laser generator, and establish a detailed maintenance plan, such as weekly appearance inspection and monthly key components testing. Once unstable power is found, contact professional maintenance personnel for overhaul in time.

Choose the right tube: when purchasing tubes, strictly control the quality, give priority to suppliers with uniform material and stable quality, and carefully check the quality inspection report to ensure that the tube material is uniform, and reduce the instability of cutting speed caused by material problems.

The Poor Quality of the Cutting Surface

The quality of the cutting surface is directly related to the final quality of the product, if the cutting surface has burrs, cracks and other problems, not only affect the appearance, but also reduce the strength and durability of the pipe. The main reasons are:

Improperly set cutting parameters: cutting parameters, such as laser power, cutting speed, auxiliary gas pressure, etc., are interrelated and jointly affect the quality of the cutting surface. Irrational setting of parameters easily leads to excessive melting of the cutting surface, producing burrs, or slag can not be effectively discharged.

Excessive internal stress of the pipe: During the production of the pipe, internal stress is generated due to the processing technology, etc. When the internal stress is released during cutting, it will cause damage to the cutting surface and lead to cracks and other problems.

Solutions

Optimization of cutting parameters: According to the material, thickness and cutting requirements of the pipe, the best combination of cutting parameters can be determined through repeated tests and data analysis. You can also use advanced cutting process software to simulate the cutting effect under different parameters and optimize the parameter settings in advance.

Annealing treatment of the pipe: annealing treatment of the pipe before cutting, through the control of heating temperature and cooling speed, so that the internal crystal structure of the pipe is rearranged to release the internal stress and improve the quality of the cutting surface.