Laser Welding

A Brief Introduction

Laser welding, a cutting-edge technique in the realm of materials joining, stands as a testament to precision and innovation. This transformative process harnesses the power of highly focused laser beams to melt and fuse materials, creating seamless bonds with unparalleled accuracy. Unlike traditional welding methods, laser welding operates on a micro-scale, enabling intricate work on diverse materials. The concentrated energy of the laser beam facilitates pinpoint accuracy, resulting in minimal distortion and superior weld quality. From industrial applications like automotive and aerospace manufacturing to intricate medical device production, laser welding has emerged as a cornerstone technology, redefining the landscape of materials joining with its efficiency, versatility, and ability to produce high-quality welds.

Projects

This project aimed to understand the governing mechanisms behind weld hardness in laser-welded titanium sheets. Hardness measurements indicate increasing hardness with increased heat input and grain size, which is inconsistent with the general knowledge on hardness behavior. To understand this phenomenon, the oxygen content is measured in the fusion zone using EDS and XRD analyses. A greater amount of oxygen is detected in the fusion zone for samples with higher heat input. Results shows that ...
Dissimilar joints especially aluminum (Al) to copper (Cu) have been drawn enormous attention in recent years. Challenges of joining aluminum to copper could be (1) high thermal conductivity and high reflectivity of these metals and (2) formation of Intermetallic Components (IMCs). To overcome these shortcomings, a method is presented for dissimilar joining aluminum to copper with stainless steel 316L interlayer. The method is included laser welding and laser material deposition processes for creating bimetal and ...
The primary hurdle in programming of laser welding’s motion systems lies in the alignment of laser beam with the seams to achieve a high-quality weld. Traditionally, achieving such weld joints necessitated the programmer to manually set numerous points along the seam—a time consuming process. In response to this challenge, our project introduces a real-time seam tracking system. This system is adept at sensing and generating the optimal welding path in real-time, concurrently guiding the robotic ...