Matti Närhi

Title: Innovations of Matti Närhi in Laser Welding Technology

Introduction

Matti Närhi is a notable inventor based in Lempäälä, Finland. He has made significant contributions to the field of laser welding, holding three patents that showcase his innovative approaches to joining metal parts. His work is characterized by advanced techniques that enhance the efficiency and effectiveness of welding processes.

Latest Patents

Matti Närhi's latest patents focus on spiral laser welding methods for joining metal. These methods involve focusing laser radiation onto a first metal sheet that is part of a metal assembly, potentially with one or more intervening metal sheets. The laser radiation is directed to trace at least one spiral path, allowing for the spot-welding of metal components. The technology includes a center beam and an annular beam, which work together to maintain a stable keyhole during the welding process. One of the methods is specifically designed for welding aluminum parts, particularly those with high gas content or dissimilar compositions. In this method, the laser radiation traces an outward spiral path followed by an inward spiral path, with the center beam pulsed during a segment of the inward spiral. Another method is tailored for welding steel or copper parts that have a coating at their interface, where the laser radiation traces an inward spiral path. This innovative approach can accommodate both zero-gap and non-zero gap interfaces.

Career Highlights

Matti Närhi is currently associated with Corelase Oy, a company that specializes in laser technology. His work at Corelase Oy has allowed him to further develop his expertise in laser welding and contribute to advancements in the field. His innovative methods have the potential to revolutionize how metal parts are joined, making processes more efficient and reliable.

Collaborations

Matti collaborates with Henri Pajukoski, a fellow professional in the field. Their partnership enhances the development of laser welding technologies and fosters innovation within their projects.

Conclusion

Matti Närhi's contributions to laser welding technology through his patents demonstrate his commitment to innovation in the field. His work not only advances welding techniques but also sets a foundation for future developments in metal joining processes.