Table of ContentsWhat Is Laser Cutting?How Does Laser Cutting Work?What Happens to Jasa Laser Cutting Medan the Material During Laser Cutting?Uses and Applications of Laser CuttersThe Benefits of Laser CuttingCome to Laserfab to Learn More About the Possibilities
In the last few decades, laser cutting has experienced more than a surge in popularity — it has become an indispensable part of world commerce. From fabrication to medicine and beyond, laser cutting is an industry seemingly without limits. Its products can be found everywhere. Lasers cut the silicon in microchips, perform corrective eye surgeries and craft the futuristic gear hurtling into space aboard rocket ships.
Still, there is a lot about laser cutting that most people still don’t know. How does it work and what are the mechanics behind it? What are all of its applications? What is the laser cutting process and how do you use it for your own project or business?
In this article, we will dive into everything you need to know about laser cutting. There is a lot to learn, starting with the technical aspects of how a laser cutter functions and then moving on to its many uses. Luckily, the technology is as accessible to the mind as it is to the consumer. Let’s get started.What Is Laser Cutting?
Simply put, laser cutting is the process of using a laser to cut, score, engrave or otherwise alter physical materials. As futuristic as it sounds, laser cutting is a technology that has been with us for decades. Like many innovations, its scope was initially limited, but an incredible number of industries have since adopted it with great enthusiasm.
It can be easy to operate a laser cutter these days. Though the technology itself is the result of astounding feats of genius, the user interface has developed in a user-friendly way. It is common for hobbyists, school science classrooms and businesses to employ the use of laser cutters. They’re not just useful — they are a spectacular way to learn about optics and the properties of light.
Laser cutting starts, naturally, with a laser Jasa Laser Cutting Medan beam. The beam is focused until its intensity is sufficient for the job at hand, whether that’s cutting through metal, human tissue or cardboard. A computer acara guides the laser itself and specifies the pattern the laser beam will cut. Once it begins, the laser will then follow the pre-programmed guide to complete its work.
Depending on the material and the desired result, the laser beam will both move around and vary its focal length. This way, it can reach different depths and cut different layers of material. With metals, this is useful for techniques like engraving. In other applications like medicine, however, its pinpoint accuracy allows it to cut medical devices.
Laser cutting is truly amazing technology. It lies at the confluence of computers and the human touch. Its applications are already broad, but more will undoubtedly emerge as technology continues to improve.
Let’s look now at the mechanics of a laser cutter and how it does what it does.How Does Laser Cutting Work?
The word “laser” stands for “Light Amplification by Stimulated Emission of Radiation.” In a laser cutting device, it all starts with the laser resonator. This component creates the laser beam, in which light particles of the same wavelength travel out of the resonator in the exact same direction. This beam might be in the invisible infrared area of the spectrum, in the case of a CO2 laser, or of some other wavelength as required by the application. When it exits, it may be about .75” in diameter.
This beam of parallel light waves is then reflected off one or more mirrors into the focusing head. Once inside the focusing head, the beam is sent through a series of lenses. These, predictably, focus it. It then passes out through a nozzle and sears whatever it lands on. You’ve seen this effect before. In the same way that sunlight through a magnifying glass can start a fire, shining a laser beam through a focusing lens creates an incredibly powerful, singular point of light.
That means all the photons in the laser beam converge at a single point. How could this be? The more physics-oriented reader may cry, “Pauli Exclusion Principle!”, which roughly states that two particles cannot occupy the same space at the same time. However, since photons are not technically matter, they are exempt from the Pauli Exclusion Principle and can exist at the same point in space. That means all the energy in that .75” laser beam is now focused into one point in space.
You can imagine what happens next. The point on the material where this intense light strikes is instantly melted or vaporized.What Happens to the Material During Laser Cutting?
We have an incredibly intense confluence of laser light striking a surface. But what happens next? How is the depth of cutting controlled and how do we account for different types of material?
As it turns out, we left out one component of the laser system above. It’s the addition of compressed gas to the laser beam’s path. As the beam converges past the focusing lens, it is joined by a stream of fast-moving gas. This is typically oxygen or nitrogen. The gas flows downward and shoots out of the nozzle, which the laser also passes through the tip of, and impacts the zone where the laser is cutting.
Oxygen might be used for a material like soft steel, which the laser will cause to ignite. The oxygen will then make the burning steel incinerate and disappear from the site. In other metals such as aluminum or stainless steel, where the laser beam simply causes the metal to melt, nitrogen is used. As the metal melts, a jet of gas blows down with it and removes the molten metal from the kerf.
The kerf is the slit made by the laser. Its width is adjusted by focusing the laser at different heights relative to the surface.Uses and Applications of Laser Cutters
As we have said, laser cutting is an exciting industry full of continuously new developments. Here are some of the most common applications of laser cutting today.Metals
Not only does laser cutting work on a large number of metals, but it is also a versatile tool between industries. Laser cutting can make smooth, tight cuts that are cleaner than those made by machining. Like machining, it too can be programmed and guided by a computer, meaning a laser cutter can automatically create large numbers of metal parts for cars, computers and more.
Metals undergo many different operations in laser cutting. Often, strange shapes such as automobile frames or hydro-formed parts need laser cutting, as do many parts in the aerospace industry. The results are often better than with plasma cutting.Reflective Metals
Why mention reflective metals when we’ve already mentioned metals? Because reflective metals bounce backlight that shines upon them, which raises concerns when directing a high-powered laser beam at them. If the metal were to reflect the laser, it could destroy itself.
The answer to this duduk perkara comes in the form of fiber laser cutting. With this technique, fiber optic cables transmit the laser beam to the metal. Jasa Laser Cutting Any light reflected does no damage to the fiber optic cable. Metals such as aluminum, silver, copper, and gold are all reflective and are vitally important in the production of automobiles and semiconductors.Medical Sciences
Laser cutting also plays a huge role in the medical industry, where extreme precision and tight dimensional tolerances are essential. Because of the medical industry’s demand for high volume, this technology aligns with their needs in that it can replicate designs with both accuracy and a quick turnaround.
Medical devices of many types have their origin in laser cutting, from cardiovascular and orthopedic devices to components for surgical implants. With laser cutting, these devices can be made with the required rapidity without sacrificing accuracy.Engraving and Marking
A slightly less graphic application of laser cutters can be found in the world of engraving and marking. This is also where the laser cutter frequently enters the mainstream market. Many metal signs, insignias and other metal works are produced through engraving and marking. When jewelers need engraving, they frequently turn to laser cutters.Silicon
Our world very much runs on silicon. It makes up our microchips, our solid-state semiconductors and a host of other things related to computers and electronics. It is also a large player in the important field of solar energy, which has a growing potential to power our world. Laser cutting is one of the primary ways silicon is cut for use, so it is difficult to exaggerate exactly how important the technology is.