The laser marking machine, also regarded as a laser etching machine, is undoubtedly one of the best marking tools available. It can be applied to etch a wide range of materials and leave permanent marks on their surfaces. Laser marking technology produces high-quality and easy-to-read permanent marks which are reliable to manufacturers and customers. These marks are hardly damaged by these laser marking machines, even in extreme working conditions, such as vapors, high temperatures, etc. Compared with traditional marking methods, laser marking is a non-contact process along with lower operating costs and material costs. In addition, by means of a laser marker, some other useful information can be added to your products, including codes, serial numbers, and texts, etc.

So, what’s laser marking technology? Laser marking is a generic term. It stands for a collection of a broad range of surface processing techniques, such as printing, hot-branding, and laser bonding. In the working course of the laser marker, a focused beam of light will give permanent marks on the veneer of parts or materials. Plus, the marks won’t be worn away over the elapse of time.

It’s important to note at the beginning that laser marking is a high-speed process of high precision. Laser marking works by means of a focused beam of light to give the mark on the material veneer. The light beam, essentially, is an atom that is stimulated to release particles of light. Contacting with the material’s surface, the beam will oxidize the laser marking area, bringing a change in the color.

Generally, the majority of markings will turn black. Moreover, laser marking also alters the material’s properties and appearance. The energy that is released is measured in wavelengths or nanometers ( NM ). The wavelength is proportional to the strength of the laser beam. In other words, the higher the wavelength, the more powerful the laser beam.

Laser marking machine is also known as the laser code machine, laser marker, and laser symbol machine. And now, let’s together have a closer look at the differences between the several laser markers.

At first, it comes CO2 laser marking machine. Currently, CO2 laser marking machine is usually equipped with the CO2 RF laser tube, whose service life can be up to 50,000 hours. Generally, the marking speed of CO2 laser marker can reach 7,000 mm/s. CO2 laser marker is greatly suitable for marking on most non-metallic materials, i.e. paper packaging, plastic products, leather cloth, glass, and ceramics.

The laser is becoming a new method for most marking applications. Although it requires a higher initial investment than its alternatives, it provides a better return on investment. The satisfactory investment return is inseparable from the following benefits

• In most cases, it’s the fastest marking solution. Looking at aluminum marking performances, it’s possible to create a high-contrast data matrix code in just 1.40 seconds.
• Laser marking is a traceability solution like no other. It offers near-perfect readability rates, thanks to the high reliability of laser systems and to the high contrast of marked identifiers. It can also create marks that are truly permanent, capable of withstanding almost any surface treatment such as e-coating, heat-treating.
• It can be used to create permanent marks on materials whose surface cannot be directly marked (like stainless steel) by creating a mark under the surface.
• Due to the high precision of laser marking, even very delicate graphics, 1-point fonts, and very small geometries will become clearly discern. Meanwhile, marking with the laser ensures constant high-quality results.
• Laser marking is permanent and at the same time resistant to abrasion, heat, and acids. Depending on the laser parameter settings, certain materials can also be marked without causing damages to the surface.

Metal’s excellent durability, workability, heat resistance, and superior appearance make it widely used in industry, and laser engraver for metal has become crucial. Laser engraver for metal are widely welcomed in the industrial field. Metal engraving machines have entered large-scale industries and household handicraft industries. Laser engraver for metal with varying prices have unique machinability, and almost everyone can buy them.

Benefits of the laser engraving machine for metal

• In most cases, it’s the fastest marking solution. Looking at aluminum marking performances, it’s possible to create a high-contrast data matrix code in just 1.40 seconds.
• Laser marking is a traceability solution like no other. It offers near-perfect readability rates, thanks to the high reliability of laser systems and to the high contrast of marked identifiers. It can also create marks that are truly permanent, capable of withstanding almost any surface treatment such as e-coating, heat-treating.
• It can be used to create permanent marks on materials whose surface cannot be directly marked (like stainless steel) by creating a mark under the surface.
• Due to the high precision of laser marking, even very delicate graphics, 1-point fonts, and very small geometries will become clearly discern. Meanwhile, marking with the laser ensures constant high-quality results.
• Laser marking is permanent and at the same time resistant to abrasion, heat, and acids. Depending on the laser parameter settings, certain materials can also be marked without causing damages to the surface.

Application of laser engraver for metal

Industries that work on hardware such as auto parts, machines, pipes, and medical equipment use a metal laser engraving machine to engrave bar-codes, serial numbers, tracking numbers on the surface. Laser engraver for metal leaves permanent marks on such items. These marks are not only clearly visible but also have good durability, which can prevent the product from being tampered with and enhance the traceability of the product.

Metal types practicable with a metal laser engraving machine

• Aluminum and aluminum alloys
• Steel & Stainless Steel
• Brass
• Titanium
• Silver
• Iron
• Magnesium
• Copper

The first laser marking machine came into life in the year 1965 when the laser marking machine only limits to the cutting. With the rapid hi-tech growth, more and more new functions have been developed.

At present, laser marking finds broad applications in industries, one of which is product labeling. To label products is often to achieve traceability; control quality; identify parts. Product labeling mainly comes in the following forms: data matrix codes, QR codes, and alphanumeric serial numbers. Generally speaking, the laser marking products will be labeled before the beginning of production, facilitating barcode readers to scan identifiers at the following manufacturing steps.