Using pulse laser welding systems to weld tooling made of various alloys has had a demonstrated, measurable impact on every industry. The high-quality, predictable process that is made possible by pulse laser welding technology has allowed companies to quickly facilitate engineering changes and repairs to their existing tooling. And for a business, when it comes to an expensive investment like mold and die tooling, this means saving serious money.
Indeed, laser welding has matured to such a degree that it is now endorsed by most industries as the go-to process for mold and die service and repair work. And the benefits are clear. Laser welders extend mold life and improve the manufacturing process. But how, and why, are they so effective? Here are the key factors:
Laser welders are more powerful.
Lasers have become quite powerful over the years, but are still able to achieve lower total heat input compared to conventional welders. Pulsed lasers now commonly produce between 300 and 500 watts of power. The higher power helps deliver a faster hertz pulse rate, giving the welder more power to melt larger wire, and also the ability to move faster.
Laser Welders offer more control.
Moving faster helps welders get away from the weld deposits, which allows energy to be absorbed by the workpiece mass. A conventional welder will overheat the workpiece and temper the weld deposits, making it harder to achieve the desired hardness. This speed of travel and absolute control over the heat input to the part makes laser welding more cost-competitive.
Laser Welders are more precise.
As most welders know, heat drives grain growth. When the tool steel is heated by the welding process, the steel’s tight grain, which was originally obtained by heat-treating the parts under a controlled process, now gets destroyed. With a laser welder, you can weld a surface, immediately place your bare hand upon it, and barely feel any heat. The part does not even change color.
Laser Welders are superior for tooling.
Conventional welding has a larger heat input, which causes grain growth and degrades the HAZ (Heat-Affected Zone), making it softer and weaker much deeper into the workpiece. It can also damage adjacent surfaces, requiring the toolmaker to rework them in addition to the original defect area. Pulse laser welding systems help avoid these pitfalls, as well as the added costs and time to the repair.
At Alpha Laser, we understand the importance of your mold and die tooling investment. We designed our pulse laser welders to provide for fast welds and careful repair work. Our laser welding engineers, operators and technicians are dedicated to helping customers leverage the speed, precision and accuracy of laser welding systems to better meet their manufacturing needs.
Get in touch today to schedule a welding demo or meeting with a laser welding expert.