Laser engraving

LASER is the mechanism for emitting electromagnetic radiation, in the form of light or visible light, through the stimulated emission process. Laser is the acronym for Stimulated Radiation Emission of Light. The growing number of industries and the competition between them will always force the introduction of the latest technologies, leading to the introduction of laser systems for many industrial applications, including cutting, marking, stamping, engraving and engraving. The main difference between marking systems Laser and other forms of marking is the unique combination of speed, permanence and flexibility of computer control. The software used for the laser marking system is accessible through a PCI interface card.

This sends the digital signals from the computer to mark or record files to the motors and directs the laser beam to the laser marked product. The lasers used for marking are CO2 lasers – this will create permanent codes for lifetime traceability, this will reduce manufacturing costs and can be easily integrated with automated systems. Excimer Lasers: Available in the following wavelengths of the UV laser: 157 nm, 193 nm, 248 nm, 308 nm and 351 nm. It is mainly applied for inkjet nozzle drilling, marking glass, etc. YAG Lasers: They are most often used as the basic platform to produce different wavelengths when properly configured. The most versatile wavelength is infrared (1064 nm). This wavelength is used to mark a variety of materials, including metals, ceramics, composites and certain plastics. The different types of processes involved in laser marking systems are as follows: Surface annealing Surface annealing will attract carbon and / or oxides from the base material to obtain a contrast mark. The marking beam will produce a strong line of contrast with the surrounding area with little or no penetration. This is great for applications where a smooth, undamaged surface and contrast is needed.

Surface annealing is mainly used for medical implantation, bearings, tools, etc. Surface Engraving Surface engraving is the ability to modify reflectivity and improve the contrast of metals by modifying the surface finish of metals. This is one of the most widely used laser marking techniques, whose penetration depth generally does not exceed 0.0001 “deep. Thermal Marking This method works by controlling heat using different laser parameters such as marking speed, pulse rate, power and focus. to certain alloys, which causes color variations.

Engraving Marking In this method, the required vapor is produced by vaporizing the base material. This form of marking is identical to that of the surface engraving; is generally used for a depth of 0.0001 “to 0.005”. Repeated passes will increase brand depth. Specialized marking The specialized marking system is commonly used in plastics. Some plastics can produce a contrast of heat or coupling with a wavelength that causes a chemical change. Additives can also be used with most plastics to achieve different colors. An example of special branding is product traceability, which is the ability of a manufacturer to track a product through its processing procedures and also has the ability to track a product to the manufacturer.


Laser engraving and micro-machining

Laser etching is the art of using lasers to record images, letters or numbers on a variety of materials. In this article we will discuss laser engraving also known as laser etching and two other methods of machining.

Laser Engraving

Most laser engraving machines consist of three main components: the laser, the controller and the surface. The laser uses a beam, as small as a pencil tip, to track and record patterns on various surfaces. A computer generated program guides the controller, accurately, to create intricate patterns and details.

The controller handles the direction, speed of movement, intensity and even the width of the beam itself. This is how companies that offer a laser can produce custom designs for almost every “laser” material. The surface is carefully aligned with the engraved product and how the laser will react to it.

There are three different types of on-base machines that are used to produce various results. The X-Y engraving board is the most common for all thumb devices. In most cases, the surface or piece of work is stationary, while the laser draws vectors on the object by moving in the X-Y directions. There are also small machines in which the surface is moving and the laser is also stationary.

The second type of water device is used for cylindrical surfaces or flat surfaces mounted on cylindrical objects. The third method involves the use of galvanized mirrors. This is unique because both the laser and the surface are stationary, but the mirrors move across the surface.


Unlike laser engraving, micromachining is a different process, but in some respects they are the same. Both laser engraving and micro-machining perform a method of engraving, however the later uses two different processes to produce markings on selected materials.

The first method is surface microfiltration. This method uses a series of thin film layers and dams to create structures that sit on top of a substrate. As well as laser engraving, the angles and dimensions will be detailed and defined.

The other method mentioned is bulk micro-machining. As with the other method, bulk micro-machining can be done with wet or dry etching. Anisotropic moisture is the most commonly used in most companies today.

This kind of machining takes advantage of the fact that silicone consists of a crystalline structure, which simply means that all atoms are arranged along lines and planes. Using this kind of resource is very convenient and also affordable it has engraved corner walls and contours within the structures.


Engraved vs Etched

In many industries, due to robustness many terms may be used interchangeably and wrongly. For example engraving and etching. Although they have the same aspects the processes are not the same. The difference between the two is that Etching is a chemical while engraving is a physical process.

A few years ago, metal drills were used as tools for etching and engraving, but their disadvantage was that for companies with large scales they were very expensive because they had to be replaced repeatedly and also the surfaces where the current one was. Engraving was done to create cracks and eroded faster if any error occurred during the overall process. But with the advancement of technology lasers were introduced therefore introducing laser etching and laser engraving.

With both methods using high beams, it makes them equally effective when it comes to making designs. Although weighing up the advantages and the advantages of laser engraving and laser etching will help to come up with the method that is best.

Advantages of laser etching

Image quality

The first is the quality of the images produced. Laser etching is capable of producing very high quality images; How complex is the image. Very minute details are not omitted when laser etching.


The cost of recording is very low compared to other types of images. The equipment does not cost much. They come in a variety of sizes and shapes that meet all budgets.

Laser etching machines are classified according to their operation.


Another thing that makes everything very convenient is the speed at which the images are created. Because it is a computerized process, the image is created and stored on a computer. This means that many objects can be registered with the same image in a short period of time.

They can be used in both natural and synthetic materials and they can also be used to remove paint coatings, make complex arrangements, and so on on the surface of the product.

Advantages of laser engraving

They help to make the engraving more accurate, as they can specifically target the areas where engraving is needed.

They help resolve various concerns about product management, such as branding, product specificity, product identification, etc.

They help track products, as they can be used to record code codes, bat numbers, and other products.

Laser etching are easy to use. There are manual types that can be used by artisans to create unique and personal designs.