What a Fiber Laser Marking Machine Can Do For You

Industrial Applications of Fiber Laser Marking Machine

Automotive industry

The automotive industry has become one of the largest users of this technology. It is estimated that a car is made of roughly 30,000 parts, which are either made up of steel, aluminum, copper, special fiber or plastic, all varying in shape and size.

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The following are some of the applications where part marking is achieved using a fiber laser marker in the automotive industry;

• Marking seat belt components with information such as country of origin, serial numbers and barcodes.
• Marking various components and button on the dashboard. These need to be well visible during the day and illuminated at night. Therefore, day and night markings are used.
• Other materials such as ceramics used to make spark plugs can also be marked using these method too.

You'll also find Fiber Laser markings on engine blocks, automotive sensors, chassis VIN number and motorcycle parts.

One of the biggest concerns with markings in this industry is readability and traceability. Parts ought to be traced to their country of origins and markings be machine readable. It is for this reason Fiber Lasers have noted increased usage in the recent past.

Integrated Circuit Industry

Integrated circuit elements are the most important units used to build circuits and systems. The Fiber Laser marking machine can be used to make markings on Integrated Circuits boards and semiconductor components, including text and graphics.

No mechanical pressure is generated due to the non-contact processing mechanism. The laser beam is extremely thin hence can be integrated on small components including capacitors and crystal oscillators.

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Electronics Industry

In such a fast-evolving industry, it is crucial that efficiency is prioritized and the need to match the ever-increasing demand. This demand also expects quality and safety too. TVs, Laptops and smartphones are all made up of tiny and small substances.

Fiber Laser marking is the most efficient for marking in this industry because of its ability to work with minute elements without damaging the surrounding material.

Medical Industry

Health establishments and manufacturers of medical equipment are subject to very strict standards in terms of position, size and content of the marking, thereby leaving no room for error.

Markings must be resistant to cleaning with acid, corrosion and sterilization and high temperatures.

Tools may become smaller and process more efficient. But high quality and safety remain the foremost priorities in this industry. Fiber Lasers have therefore become popular for markings in this industry, considering quality, cost-effectiveness, speed, reliability and adaptability.

The following are some of the most common reasons why Fiber Laser markings are used in the medical industry;

• Traceability of Medical equipment: The internal medical personnel in health establishment need to be able to track and locate the medical devices in their hospitals. They should also be able to clearly read and make out each instrument through the sterilization process.
• Identification of medical prostheses: Medical prostheses need to have a medical number or logo based on alphanumeric series retrieved from a dedicated database.
• Traceability of Individual Biofluid Storage Containers.

Understanding how the laser marking process works is only possible by understanding a laser marking machine and its generation of the laser beam responsible for the marking.

Step 1: Generation of the Laser Beam

The generation of the laser beam in any laser marking equipment depends on three important components:

' The lasing medium is responsible for the wave position and the excitation energy required by the machine. Common lasing mediums include neodymium-doped yttrium aluminum garnet (solid) and organic dyes (liquid), and CO2 (gas). The lasing medium can also be a geometric shape, such as the fiber lasers.

' The pump source is responsible for introducing energy to the laser marking machine, which excites the lasing medium and leads to photons' emission through spontaneous or stimulated emission.

' The optical resonator has a reflective (high reflector) and partially reflective (output coupler) mirror. It functions in reflecting the light produced by the lasing medium. It can also contain other things, such as a modulator and q-switch, that can change the generated laser beam properties.

Energy becomes introduced into the lasing medium. This leads to the excitation of the lasing medium atoms and the emission of photons. The light enters the optical resonator and undergoes total internal reflection to create the laser beam. The laser can then be passed to components such as the q-switch, lenses, beam expanders, etc., to shape the beam before releasing it.

Step 2: Marking

When the laser beam touches the workpiece's surface, the heat energy produced causes a change in the features and attributes of the material. The types of change depend on the laser technology you choose. A permanent mark is then left on the surface of the workpiece.

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