Laser welding is a metal joining process. As with all welding and joining processes, laser welding generates heat at a specific point. The History of Laser Welding The spiritual originator of the laser was no other than Albert Einstein. More than 100 years ago, he published the first idea on the subject of light beams. 1928 The first experiments verified Einstein’s theory. However, another 32 years passed since then, until 1960, when the first laser beams were actually produced with rubies. Shortly afterwards, the expensive ruby was replaced by a gas, which significantly reduced the production costs of laser devices. The application of this new and fascinating method of light was soon to come. At first, lasers added great advances to measurement technology. For the first time, accurate measurements could be made over great distances. For example, NASA astronauts installed a mirror on the moon. With this mirror and the laser on Earth, the distance between two stars could be determined in centimeters. Laser welding was also the first attempt 1960 era was carried out. Laser cutting is the most accurate method of cutting materials. The laser cutting process is particularly fast due to its high energy density. Not only the cutting gap itself is very narrow. The transverse heat affected zone during separation is also very small and generally negligible. For example, laser cutting is distinguished from flame cutting. Cutting torch separation plates must generally be deburred and then milled for use. Laser cutting and laser welding only dominated the market for a long time, although there are great advantages in terms of accuracy, speed and material protection. It was not until the 20th century 80 that laser cutting and laser welding systems became significantly more popular in the mid-20th century. Until then, these systems were used only in research institutes and specialized companies. Most importantly, aircraft manufacturers could make great strides with this innovative separation and joining technology. However, the melting temperature of aluminum-based duralumin, a standard material for avionics applications, also plays a key role at 600 °C, making it easier to work with than the steel commonly used in conventional mechanical engineering. With a melting temperature of 1400 °C, more than twice the kinetic energy is required for melting. However, for the effective application of laser welding systems in steel construction, aluminum welding bypasses have proven ideal. Cost of laser welding systems Cost remains a major drawback for these innovative processes. This depends to some extent on the materials and materials processed by the laser welding system. For example, even a simple small system for engraving a wedding ring can cost more than 1,000 euros. New high-performance machines cost as little as €100,000 or more. These costs are offset by excellent manufacturing quality and high productivity. In fact, laser welding is often a much higher process than traditional electric or rare gas welding. How does laser welding work? Laser welding is mostly very simple: two precisely cut plates are held together. The laser melts the edges of the metal sheets. The dissolves flow into each other – the joining is completed. The consistent high precision of laser welding is an outstanding feature. Except for particularly thin joints, the low-temperature input is the most critical bonus item. Compared to gas shielded welding, which works slowly and with high heat, laser welding is fast and less invasive. This prevents complete heating of the substrate. As a result, no selective thermal deformation occurs, which also prevents deformation of the workpiece after cooling. Therefore, there is no need to finish the welded structure on a calibrated platform after laser welding.