How to engrave metal with laser?

Our MR65 rotating attachment can facilitate 360° radial laser marking, engraving and engraving to help you meet such needs. Be sure to select this part if you think radial engraving is something you may need to do in the future. Deep laser engraving is a process that uses a highly focused beam of light to engrave 3D shapes on metals. Pulsed fiber lasers are the best tools for deep engraving because they achieve the high maximum power required for carving metal surfaces.

On the other hand, the holes excavated with the engraving have better protection against abrasion than the raised marks formed with the engraving. In fact, the elevation of laser engraving can reach up to 80 microns, while the laser engraving depth can reach 500 microns. Laser annealing, a different marking process, can create a wider range of colors on steel and stainless steel. By modulating the laser parameters, different colors can be created, as shown in the following images.

As you can see from the graph below, metals absorb the wavelength of the fiber laser (1064 nm) more efficiently than the CO2 laser (10.6 µm). For this reason, fiber laser (a type of solid-state laser) is a better choice for marking metals. For bare metals, fiber lasers represent the preferred etching method. Fiber lasers are ideal for marking many types of aluminum, brass, copper, nickel-plated metals, stainless steel and more, as well as engineering plastics such as ABS, PEEK and polycarbonates.

However, some materials are difficult to mark with the wavelength of the laser emitted by the device; the beam can pass through transparent materials, for example, producing marks on the engraving table. While it is possible to achieve marks on organic materials such as wood, clear glass and leather with a fiber laser system, the system is not really what it is best suited for. Everything you need to know about marking steel, stainless steel, aluminum, brass or titanium. How does permanent laser engraving work without consumables.

Research different brands and products before buying a metal-specific fiber laser engraving machine. A laser-engraved mark will remain legible for the life of the part with better readability than other direct part marking technologies. In fact, the laser you need depends on the type of material you want to engrave, not the marking process. Because different types of lasers react differently with metals, there are a few considerations to consider.

However, fiber lasers operate at 1070 NM and offer greater power for engraving more rigid materials, such as metals or hard plastics. These glasses work just like other laser systems, but be sure to choose a pair with the desired optical density to attenuate the beam. Tungsten and carbide are the hardest metals on earth, so engraving or engraving is generally not recommended. A laser engraver can cut, engrave or mark various materials, such as coated metals, rubber, plastic, wood and leather.

With anodized aluminum, fiber laser marking can often achieve a much higher brightness than a CO2 laser. Whether you are engraving metals or hard plastics, you should wear protective equipment, such as laser safety goggles. Fast and affordable, CO2 lasers can also mark other types of materials, such as woods, acrylics, natural stone and more. This is because reaching the melting point of a material (laser engraving) requires less energy than vaporizing it (laser engraving).

Shana Lall
Shana Lall

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