Tomas Johansson

Title: Innovations by Inventor Tomas Johansson in Submerged Arc Welding

Introduction

Tomas Johansson, an accomplished inventor based in Laxa, Sweden, has made significant contributions to the field of welding technology. With a total of five patents to his name, Tomas is recognized for his innovative methods and apparatuses that improve the submerged arc welding process. His expertise and ingenuity have positioned him as a key figure in the industry.

Latest Patents

Among Tomas's latest patents is a groundbreaking method for starting a submerged arc welding process along with a corresponding welding apparatus. This invention comprises a meticulous approach with three main phases: an arc ignition phase (IP), an arc-stabilizing phase (AP), and a stable arc phase (SP). The arc stabilizing phase features an initial sub-phase (IS) where at least one hot wire is fed at a constant speed, followed by a main sub-phase (MS) that also maintains a constant feed speed for the hot wire while introducing a cold wire. The stable arc phase involves continuous adjustments to the feed speeds of both the hot and cold wires, enhancing the stability and quality of the welding process.

Additionally, Tomas's invention includes a system for submerged arc welding, which incorporates advanced apparatus comprising a first wire feeder for a hot wire and a second wire feeder for a cold wire, ensuring optimized feeding dynamics. The design also includes a control unit configured to adapt the variable feed speeds of the cold wire according to active welding parameters, thereby improving overall welding efficacy and performance.

Career Highlights

Tomas Johansson's career is characterized by his commitment to advancing welding technology. As a key member of ESAB AB, a company known for its pioneering work in welding and cutting solutions, Tomas has utilized his skills to push the boundaries of what is possible in submerged arc welding. His inventions not only reflect his technical acumen but also his understanding of practical applications in the industrial sector.

Collaborations

In his professional journey, Tomas has collaborated with knowledgeable colleagues, including Hannes Hugo Raudsepp and Martin Andersson, who share a passion for innovation in the field. This collaborative environment fosters an exchange of ideas that fuels continuous development and refinement of welding technologies.

Conclusion

Tomas Johansson stands out as a notable inventor whose work has significantly advanced the field of submerged arc welding. His latest patents demonstrate an impressive mastery of technology and a forward-thinking approach that enhances the welding process. Through his contributions at ESAB AB and collaboration with talented coworkers, Tomas continues to influence the evolution of welding techniques, promoting greater efficiency and effectiveness in the industry.