The Top Factors Influencing Laser Cutting Quality of Laser Cutting Machines


LZK-EH Series Fiber Laser Cutting Machine

High Power Fiber Laser Cutting Machine

Laser cutting machines are machines that use high-power laser beams to accurately cut materials. In order to achieve high-quality laser cutting with clean cutting edges, few burrs, and accurate dimensions, we need to understand the key factors that affect the cutting quality of laser machines.

Table Of Contents

Fiber laser output power and cutting mode
Focus position
Board thickness
Cutting speed
Pressure and gas selection
Material surface roughness

Fiber laser output power and cutting mode

The cutting quality on plates of equal thickness improves with higher output power from the fiber laser. Nonetheless, excessive power can lead to material deformation or excessive burrs. Additionally, the selection of cutting mode (continuous wave or pulse mode) influences the quality of the cutting edge and overall efficiency. A better match between the cutting mode and the material enhances the cutting quality.

Focus position

The precise positioning of the laser beam focus relative to the material surface is critical to achieving optimal cutting results. Proper focusing ensures that energy is concentrated at the correct depth within the material, resulting in clean, precise cuts. Factors such as focal length and beam divergence must be carefully adjusted based on material thickness and type.

Board thickness

Board thickness matters in fiber laser cutting, as it’s most effective for thin plates. It yields noticeable results on carbon steel under 12mm and stainless steel under 6mm, ensuring optimal quality and efficiency. For instance, materials under 1mm thickness result in exceptionally smooth cuts. However, thicker materials necessitate higher laser power and slower cutting speeds to prevent excessive melting or distortion and ensure clean cuts.

Cutting speed

The ideal cutting speed is crucial for achieving optimal results regardless of the material being cut by the fiber laser. Matching the cutting speed to the material yields the best cutting effect. While higher cutting speeds enhance productivity, thicker materials necessitate slower cutting speeds to maintain smooth cuts. Both excessively fast and slow speeds can adversely affect the laser cutting outcome.

Pressure and gas selection

As pressure increases, gas purity improves, reducing debris adherence to materials and yielding smoother cutting edges. Various gas types offer different cutting speeds and effects. Typically, oxygen facilitates the fastest cutting, nitrogen provides the best cutting quality, and air offers the lowest cutting cost.

Material surface roughness

Generally speaking, a smooth, uniform surface facilitates better beam absorption and heat transfer, resulting in cleaner cuts and minimizing burrs or defects, the better the quality of the cut. Through independent research and development, the laser has an automatic sensing system that can automatically adjust the height of the cutting head according to the different thicknesses of the material.

The factors that affect the laser cutting quality of the laser cutting machine are summarized into 6 aspects fiber laser cutting machine laser output power and mode, focus position, material thickness, cutting speed, air pressure and gas type, and material surface roughness.

Achieving high-quality laser cutting requires careful attention to a variety of factors, including material properties, machine parameters, and environmental conditions. By understanding and optimizing these factors, manufacturers can ensure superior cutting results, meet quality standards and increase overall productivity.

LZK open dual-drive fiber laser cutting machine has a number of patented technologies. It has the advantages of high speed, small slit, smooth cross-section, easy operation and low energy consumption, and is suitable for large-volume continuous processing. AheadTech laser control system is used to accurately adjust cutting process data. If you need a fiber laser cutting machine, LZK may be a good choice.

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