5 Applications of Laser Welding in Industries

Pankti Agarwal

Pankti Agarwal

Director- Operations

5 Applications of Laser Welding in Industries

Table Of Contents

  1. Introduction

  2. What Is A Laser Welding Machine?

  3. What Materials Can Be Welded Using A Laser Welding Machine?

  4. Laser Welding Method Vs. Traditional Welding Method

  5. What Are The Applications Of Laser Welding Machines?

  6. Advantages Of Laser Welding Machine

  7. Conclusion

  8. Key Takeaways 


Laser welding is somewhat of a recent technology that strongly comes with the potential to make far-reaching changes in manufacturing industries and their processes. This unique and quick method of fusing two different metal components together includes utilizing a focused laser beam that generates a heat source apt for melting the surfaces of the metals jointly. 

To understand laser welding, it is highly important to understand the materials that can be welded, their applications, advantages, and much more! In this article, we will take a closer look at all these points of laser welding to help you understand the specifics in detail!

What Is A Laser Welding Machine?

Laser welding is an accurate and amazingly mild welding method that utilizes a beam of light in order to combine metal parts. The laser beam is generated by a concentrated laser source and then it is guided to a workpiece. This energy transmitted into the workpiece heats and then melts the objects, resulting in fusing the metals when it comes down. One of the major advantages of laser welding is its high precision & accuracy and close regulation of the focused energy. 

The laser energy can be accurately guided towards its exact location where the weld is required with nearly zero spread or over-application of the laser. It enables exceedingly explicit liquefaction with less heat-affected zone compared to any other welding technique. This results in slighter damage to encircling areas and helps in reducing bulk heating and deformation.

What Materials Can Be Welded Using A Laser Welding Machine?

Laser welding can be utilized to weld a lot of materials, which include dissimilar metals, composite metals, etc. Dissimilar metals include copper-nickel, brass copper, low-carbon steel, titanium aluminum, titanium nickel, titanium-molybdenum, and titanium copper. However, developing a metallurgic bond at the weld seam for dissimilar metals might be challenging, but this can be done by building a mechanical entrapment.

This is defined as the assortment of dissimilar metals to make sure that they are held together in a physical manner with sufficient mechanical stability to guarantee a strong connection, and this can be accomplished by physically huddling the two metals jointly and utilizing a sequence of laser pulses in order to work them out together.

Moreover, laser welding can also be utilized to weld composite substances, glass, and ceramics. However, when it comes to welding ceramics, it might be a complicated process because one needs to ensure that the substance does not crack when operated under high temperatures. To avoid this situation from occurring, preheating is essential. 

Laser Welding Method  Vs. Traditional Welding Method

When a laser welding machine is compared with a traditional welding method, it has been proven to be much more efficient, and the result that you will receive is of higher quality. The laser welding process involves a focused beam of light that produces a heat source in order to melt the workpiece and join different metals. 

Hence, the laser welding application needs minimal heat compared to traditional welding techniques because the HAZ (Heat Affected Zone) is extremely small and concentrated. As the heat needed is less, there will be a low risk of distortions and bending in the final result, making it of supreme quality. 

Moreover, the processing speed of the laser welding process is incredible and much greater than traditional welding techniques, and that makes it more efficient in nature. Therefore, laser welding methods are being utilized in various industries today. 

What Are The Applications Of Laser Welding Machines?

Here are some of the major applications of laser welding machines that you must be aware of: 

1) Electronics Industry

Talking about the electronics industry, it helps generate products for a wide range of applications and objectives. Nonetheless, the most developed electronic tool is becoming increasingly complicated and intricate. The electronics industry makes use of a standard laser welding method and engages types of laser welding machines in its operations like Nd: YAG, fiber laser, continuous wave, etc. The advantage of utilizing laser welding methods is the proficiency to create precision welds for small and progressive electrical elements. 

2) Aerospace Industry

Laser welding also finds its applications in the aerospace industry! It helps in operations for building airframes or security metal detectors. The aerospace industry needs exceptionally high-quality welds because they get exposed to long operating life and undergo a lot of stress. The laser welding technique in aerospace is incredible and unique because it makes use of filler wire to develop substantial welds. This is indispensable because of the provision for aerospace configurations to be favorably resilient to depletion. For this type of welding, the aerospace industry utilizes fiber lasers. 

The aerospace industry receives numerous benefits from employing laser welding processes as it helps in reducing the aggregate number of rivets utilized and, therefore, the aircraft weight. This is essential because aircraft manufacturers always strive to find ways to decrease the aircraft's weight. The aerospace industry, in general, takes some amount of time in order to get equipped with the new processes because of the requirement of extensive qualification. Nonetheless, the fabrication of fuel tanks is one such application where laser welding methods are typically being utilized. 

3) Automotive Industry

There is a wide range of activities in the automotive industry where laser welding technique is utilized, including manufacturing of vehicles, development of intricate components, design, production, etc. Laser welding plays a pivotal role in this industry because of its cost-effective nature, high precision, quality, and efficiency. 

Certain components in the automotive industry, such as alternators, engine parts, solenoids, fuel injectors, air conditioning units, etc., are some of the instances that are operated by the laser welding process to be produced. Plus, the role of fiber lasers has significantly increased in the automotive industry in recent times.

4) Healthcare Industry

The healthcare industry is involved in delivering services like treatment, medical equipment, and drugs for the general people. For various applications like implants, extremely thin metals are utilized and an accurate weld is needed, which makes laser welding a reliable option. Laser welding functions by concentrating a high-power laser into the seam between the substances in order to melt and combine the parts. 

5) Jewelry Industry

Laser welding is utilized in the jewelry industry to precisely generate and repair delicate and complex components in terms of design. A "free moving" strategy is used by this specific industry in which the beam of light is stagnant, and the laser operator safely utilizes their hands to move the piece of jewelry in front of the beam for fusing purposes. Laser welding machines can be used to build various jewelry forms, for instance, bracelets, rings, pendants, and more.

Advantages Of Laser Welding Machine

The primary advantage of laser welding is that it provides amazing precision and efficiency. Dissimilar to traditional welding procedures, laser welding processes can be executed without utilizing any additional fixtures or equipment. The outcome of laser welding is extremely precise compared to other possible methods. 

In addition, lasers have the capability to attain exceptionally high temperatures, and they also can produce strong and enduring welds that can withstand severe environments and extreme temperatures. Ultimately, because of its highly automated nature, it demands minimal manual labor when compared to other types of welding techniques, and this feature can lead manufacturers to save labor expenses. 

Let's have a quick read about the benefits of laser welding: 

  • Heat-Affected Zone

In the laser welding process, the heat-affected zone is restricted, and because of rapid cooling, the surrounding area of the material is not thickened. 

  • Weld strength

The laser weld is thin and narrow with an outstanding depth-to-width ratio and increased stability as well as strength.

  • High Precision 

The laser welding process delivers precision work, and the tiny, strictly controlled laser beam enables precise micro-welding of small substances. 

  • Metals

Lasers are successfully able to weld stainless steel, high-strength steel, aluminum, titanium, carbon steel, and various other types of metals. 

  • Deformation

Components have zero to less deformity or disfigurement. 

  • No Contact

There is zero physical contact between the workpiece and the laser head.

In Conclusion

The industrial application of laser welding machines has completely revolutionized the manufacturing landscape across numerous sectors. This high-precision equipment has shown its versatility and effectiveness in combining materials with outstanding precision, speed, and reliability. Whether in the aerospace, automotive, electronics, or medical industries, laser welding machines have evolved to become crucial for developing enduring and efficient outcomes. The future contains exciting opportunities for this specific technology as it proceeds with driving progress and excellence in manufacturing processes all over the world. 

Key Takeaways

  • Laser welding machines use highly concentrated and intense laser beams to combine two metals.

  • Laser welding machines are widely utilized in numerous industrial applications because of their efficiency and precision.

  • Key advantages of laser welding comprise minimal heat-affected zones, high welding pace, and precise control.

  • In the automotive sector, laser welding is utilized for body and component assembly, guaranteeing strong and weightless joints.

  • In the aerospace industry, laser welding is essential for building aircraft elements with high resilience and minimal distortion.

  • Laser welding machines can perfectly work with different materials, comprising metals and plastics.

  • Endless research and growth are navigating advancements in laser welding technology.

Pankti Agarwal

Pankti Agarwal

Director- Operations

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