As a high-precision and efficient material processing method, laser cutting is widely used in various industries, including manufacturing, engineering and construction, etc. However, a common problem that comes with it is thermal deformation, which is the shape change of the material due to localized heating and uneven cooling during the cutting process.

During the laser cutting process, local heating of the laser energy will cause thermal expansion of the material, while uneven cooling may cause the material to deform. Especially for some heat-sensitive materials, such as metals, this thermal deformation problem is particularly prominent, seriously affecting cutting quality and accuracy.

Faced with the problem of thermal deformation caused by laser cutting, what methods can help us avoid or reduce the impact on materials?

1. Optimize cutting parameters

By adjusting parameters such as cutting speed, power and frequency, the heat input of the laser to the material can be reduced, thereby reducing the risk of thermal deformation. Reducing cutting speed and power and increasing frequency are often effective ways to reduce heat input.

2. Make sure focus control is correct

Properly adjusting the focus depth of your laser cutting machine is crucial. Focusing too deeply may increase heat input, causing thermal distortion. By ensuring the proper depth of focus, you can reduce heat input and improve cut quality.

3. Use gas-assisted cooling

Using a gas injection system, such as nitrogen or oxygen, during the cutting process can help reduce the temperature of the cutting area and speed up cooling, thereby mitigating the effects of thermal deformation.

4. Reduce the thermal impact on the cutting area

By optimizing the cutting path and reducing the heat impact time of the cutting area, the occurrence of thermal deformation can be reduced. Avoid staying on the material too long or cutting the same area multiple times.

5. Fixation and support

When making cuts, make sure the material is adequately secured and supported to reduce the possibility of thermal deformation. Using appropriate clamps and supports can help stabilize materials and mitigate the effects of thermal distortion.

6.Post-processing

After cutting is complete, appropriate post-processing processes, such as heat treatment or annealing, can help mitigate or repair problems caused by thermal deformation.