Máquina de corte por láser

Cómo evitar las rebabas de la máquina de corte por láser

Cómo evitar las rebabas de la máquina de corte por láser

laser cutting machine burrslaser cutting machine burrslaser cutting machine burrs The most common problem of laser cutting machines in the processing process is that they are prone to burrs. In layman’s terms, sharp corners, burrs, and other irregular metal parts appear at the transition of the work-piece surface. However, common does not mean that the generation of burrs can be accepted. It directly affects the dimensional accuracy, shape and position accuracy, and surface roughness of the processed parts reduces product quality and brings subsequent inspection, assembly, use performance, and aesthetics. There are many problems, so burrs should be avoided as much as possible.

Causas comunes y soluciones para fallas

laser cutting machine burrs
laser cutting machine burrs

Razón 1: Las posiciones hacia arriba y hacia abajo del foco del rayo láser generado por la máquina de corte por láser se desvían, lo que hace que la energía no converja en la pieza de trabajo, y la pieza de trabajo no se vaporiza por completo, lo que aumenta la cantidad de escoria producida y no se fácil de quitar, lo que facilita la producción de rebabas.

Solución: Ajuste la posición del enfoque del rayo láser y ajústelo al mejor estado de acuerdo con la posición de compensación que produce.

Razón 2: La potencia de salida de la máquina de corte por láser no es suficiente para vaporizar eficazmente el metal, lo que produce un exceso de escoria y rebabas.

Solución: Compruebe si el Corte por láser La máquina funciona normalmente. Si es anormal, debe repararse y mantenerse a tiempo; si es normal, compruebe si el valor de salida es correcto.

Razón 3: La velocidad de la línea de corte de la máquina de corte por láser es demasiado lenta, lo que daña la calidad de la superficie de corte y produce rebabas.

Solución: Ajuste y aumente el corte velocidad de línea a tiempo para alcanzar el valor normal.

Razón 4: La pureza del gas auxiliar de la máquina de corte por láser no está a la altura del estándar requerido, lo que también hará que la pieza de trabajo produzca rebabas.

Solución: Reemplace el gas auxiliar con mayor pureza.

Razón 5: El tiempo de trabajo de la máquina de corte por láser es demasiado largo, lo que hace que el equipo parezca inestable, lo que también provocará rebabas.

Solución: Apague la máquina de corte por láser y reiníciela después de un período de tiempo, para que pueda descansar lo suficiente.

Laser cutting is a precise and efficient method for cutting a wide range of materials, including metals, plastics, and composites. While laser cutting offers numerous advantages, it may still produce some burrs, though they are typically minimal compared to other cutting methods like mechanical cutting or plasma cutting.

Here’s what you need to know about burrs in laser cutting:

1. What Are Burrs in Laser Cutting?

Burrs are small, unwanted projections or irregularities along the edge of the cut material. They can be tiny metal flakes, raised edges, or sharp points. Burrs can affect the quality and appearance of the cut, especially in precision applications.

2. Causes of Burrs in Laser Cutting:

  • Material Properties: The type and thickness of the material being cut can influence the presence of burrs. Softer materials may produce fewer burrs than harder ones.
  • Laser Settings: The laser power, focus, and cutting speed settings impact the quality of the cut. Inappropriate settings can lead to burr formation.
  • Gas Type and Pressure: The choice of assist gas (typically oxygen, nitrogen, or air) and its pressure can affect burrs. Oxygen, for example, may create more burrs than nitrogen.
  • Material Surface Condition: The surface condition of the material (e.g., rust or contaminants) can influence burr formation.
  • Cutting Technique: The specific cutting technique, such as continuous wave or pulsed laser cutting, can also affect burr formation.

3. Reducing Burrs in Laser Cutting:

To minimize or eliminate burrs in laser cutting, consider the following strategies:

  • Optimize Laser Parameters: Adjust the laser power, focus, and cutting speed to achieve the best results for the specific material being cut.
  • Use Proper Assist Gas: Select the appropriate assist gas and control its pressure to minimize burrs. Nitrogen is often preferred for cleaner cuts in metals.
  • Material Preparation: Ensure the material’s surface is clean and free from contaminants, rust, or oxidation.
  • Use a Backing Plate: When cutting thin materials prone to warping, using a backing plate can help reduce burrs by providing support on the underside of the material.
  • Post-Processing: If minimal burrs are acceptable, you can remove them through secondary processes like grinding, deburring, or sanding.
  • Advanced Laser Systems: Some advanced laser cutting systems include features like automatic focus control and beam oscillation to further reduce burrs.

4. Importance of Burr Control:

Controlling burrs is essential in applications where precision and aesthetics matter. For example:

  • In the aerospace industry, burrs on critical components can compromise performance and safety.
  • In medical device manufacturing, burr-free edges are essential to prevent contamination and ensure the highest quality.

5. Consult with Laser Cutting Experts:

For specialized or critical applications, it’s advisable to consult with laser cutting experts who can provide guidance on the best techniques and settings to achieve the desired cut quality and minimize burrs.

In conclusion, while laser cutting is known for its precision and minimal burr formation compared to other cutting methods, it’s essential to optimize laser parameters, choose the right assist gas, and consider material properties to control and minimize burrs in laser-cut parts.

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