How to control the accuracy of Metal Laser Cutting?

　　As a Metal Laser Cutting Part Exporter, I am going to introduce you to the knowledge of laser cutting today.

　　Metal laser cutting is to focus the laser beam with high energy density on the metal material so that the temperature of the metal surface rises sharply. Under the action of the laser, the metal reacts with the coaxially injected oxygen to release a large amount of heat. Therefore, the problem of accuracy is affected. As the trajectory of the spot and the assisting gas moves, a slit is formed, and the temperature can reach above the melting point, so the slit is smooth. So how do we control the accuracy of the process? Let's take a look at it together:

Metal Laser Cutting

　　1. Metal Laser Cutting to achieve accurate control of the focus. The smaller the focal depth of the focusing lens, the smaller the spot at the focus, so that the focus position can be effectively controlled on the metal surface to improve the cutting quality. Optimized cutting perforation technology. Since the laser cutting machine is a hot cut, it is also necessary to first penetrate a small hole in the metal sheet, and then the laser beam cuts the sheet from the small hole.

　　2. The reaction of metal laser cutting produces a large amount of heat, so the energy required for laser oxygen cutting is only 1/2 of that of melt cutting, and the cutting speed is much greater than laser vaporization cutting and melting cutting.

　　3. Reduce the taper of the hole. Generally, the taper of the hole increases with the increase of the aperture ratio. Multiple laser light is applied with appropriate laser output energy or small energy. Short focal length, small lens refractive index, and reduced incident light and optical axis. Measures such as the angle between the holes can reduce the taper of the hole.

　　4. Metal laser cutting is to scan the surface of the brittle material with a high energy density laser so that the material is evaporated to a small groove by heat, and then a certain pressure is applied, and the brittle material will be cracked along the small groove. Controlling the fracture is a steep temperature distribution created by laser engraving, creating local thermal stresses in the brittle material that cause the material to break along the small grooves.

　　5. Aperture size control, metal laser cutting uses a small divergence angle laser (0.001 ~ 0.003 rad), shortening the focal length or reducing the output energy to obtain a small aperture. For high melting points. A material with good thermal conductivity can realize micro-hole processing with a pore diameter of 0.01 to 1 mm, and a small pore diameter of up to 0.001 mm.

　　Laser cutting is a high-energy, density-controlled, contactless process. Significantly reduced labor costs, and can meet the individual needs of users; has gradually become an inevitable trend.

　　Laser cutting has greater flexibility than other conventional processing methods. First, as with other thermal cutting methods, as a thermal cutting process, other methods cannot act like a laser beam on a very small area, resulting in a wide slit, a large heat-affected zone, and a significant workpiece deformation. Lasers can cut non-metals, while other thermal cutting methods do not.

　　The above is the introduction of the accuracy of controlling metal laser cutting. I hope that the above content can help you solve the problem. If you want to know more questions, please feel free to contact us or follow us to find out more. Our company provides Laser Cutting Service.