Fronius celebrates 20 years of CMT welding breakthrough

By Staff Report June 11, 2025 2:01 pm IST

Fronius marks 20 years of its Cold Metal Transfer (CMT) technology, a welding innovation known for low heat input, high precision, and versatile industrial use since 2005.

Fronius, a global welding technology leader, is marking the 20th anniversary of its groundbreaking Cold Metal Transfer (CMT) method. CMT, which was introduced in 2005, has redefined welding standards by providing superior control, stability, and little heat input, resulting in clean, high-quality welds with no spatter.

CMT is based on a reversing wire movement that allows for regulated droplet detachment, resulting in a steady arc with minimal heat input. The result is flawless, practically spatter-free welding with minimal deformation, even on thin sheets (0.3 mm) and temperature-sensitive materials. It also facilitates the bonding of different materials like galvanised steel and aluminium.

CMT is widely used across industries. In the automotive sector, it welds thin sheets and lightweight materials like aluminium. In aerospace, it handles high-strength, lightweight materials. The electronics industry uses it for precise brazing, and it also supports 3D printing applications.

Fronius’ WireSense system, powered by CMT, enhances robotic welding with intelligent air gap and edge detection. The welding wire acts as a sensor, optimising weld positioning in real-time, reducing material use and rework.

Fronius continues to refine CMT technology, offering specialised variants like CMT Mix, CMT Cycle Step, CMT Cladding, and CMT Braze. LaserHybrid CMT merges laser welding and CMT for high-speed, high-quality results, particularly on high-strength steel and aluminium.

CMT Additive Pro is the recent development, designed specifically for metal 3D printing, allowing for more advanced additive manufacturing capabilities. CMT is compatible with all intelligent Fronius equipment and can be simply retrofitted, ensuring future-proof welding solutions.