Инновации
What did it take to develop the first inverter power source?
6 июля 2017 г.
In 2017, it has been 40 years since the inverter power source was developed. We sat down with Tapani Mäkimaa, an original member of the development team, and discussed what makes Kemppi a pioneer in its field, year after year.
Welding Value
Joining the accelerating welding industry
Mäkimaa started out as a trainee and summer employee at Kemppi in 1970. At the time, Kemppi already was a well-established welding machine provider in Finland. The company internationalized quickly, and, for an engineer of semiconductor physics from Otaniemi (today Aalto University of Technology), this meant a strong basis for product development. After finishing his time as a conscript in the Finnish Army, Mäkimaa combined forces with Martti Kanervisto when the performance of traditional technology just wasn’t enough for the needs of the accelerating welding industry.
“We began to consider solutions where you’d switch to higher frequency already at the mains voltage level. The thought was simple, but making it happen with the technology of that time seemed impossible. So we pondered which component would be reliable and efficient enough for the needs of industrial production,” says Mäkimaa.
Inverter power source - or converter?
“The switch affects the control of the arc in a fundamental way. Even today, it’s the muscle of the machine that does the work, for instance, in computers, televisions, home appliances and chargers. At first, the new switches were tested in small series of a few dozen machines that made a whining noise in use. This naturally wasn’t a problem in a workshop environment, but for us it wasn’t a good enough result. The new switch was introduced for the first time in the HILARC400 demo machine at the Essen Welding Fair in Germany in 1977,” recalls Mäkimaa.
“Many component manufacturers threw in the towel, but Kemppi was determined to carry on.”
“’Inverter’ was chosen as the name because it’s short and easy to remember. We found a technique that works in all welding methods,” continues Mäkimaa. “The first multi-functional inverter power source HILARC250 was launched in Stockholm a year later. Product development continued with optimizing costs, leading to comprehensive examination and development of details.
Today, the inverter power source has been established around the world, and it is the dominating power source technology in welding.”
Recipe from a pioneer
A huge number of experiments were performed at the start. Product development is not a matter of faith. It has to be based on knowledge and deduction. Up until now, product development has focused on unraveling the hindrances to work.
Mäkimaa summarizes the trend: “Going forward, more and more work will be done on how to make these contraptions simpler, both from the user and technology perspective. The human isn’t going anywhere. Robots do what they’re told. A human being interprets based on welding expertise and information received. And new things are always born of joy!”
The 40th anniversary of the first inverter power source will be celebrated at Schweissen und Schneiden, one of the largest exhibitions in the welding industry, in Dusseldorf in September 2017. Once again in Germany, Kemppi will prepare to challenge the conventional and present new and innovative welding solutions for the needs of future welding.
Welding Value
Welding Value is a corporate blog hosted by Kemppi Oy. Its main purpose is to evoke discussion on the transformation of modern welding, and bring you the latest stories from within the global welding industry told by true experts in their respective fields.
Другие посты блога
Behind the scenes: The development of X8 MIG Welder
Creating a new product for industrial users is both a long journey and exciting adventure. In his LinkedIn Pulse post, Kemppi's User Experience Manager Jussi Kapanen recalls the beginning of an ambitious R&D project, when the team was tasked with the target of creating the best MIG welding system in the world, to be loved by users in 2017.
Инновации
50 years of partnership between a man and a welding machine
In the 1960s, there was a huge shortage of professional welders in Finnish growth centers. That is why Keijo Olkoniemi, whose career as a welder has lasted for almost 50 years, trained to become a welder, a profession which has offered him challenges throughout his career. ”I remember when they said at the dockyard in Hietaniemi, Helsinki that you can bring a train full of skillful employees, and we will hire them all,” Olkoniemi says, laughing.
Люди
Welder, dare to dream
All innovations start with a dream. Whether it is the dream of a welder or an engineer, technology will always need visionaries who are able to see beyond the ordinary. The welding industry’s orientation is firmly forward, and a lot has happened even in the past few decades.
Инновации
Eila Hiltunen – The Poetry of Material
Eila Hiltunen (1922–2003) was one of the most internationally renowned Finnish sculptors of her time. She extensively used welding in her artworks, a technique she mastered in the late 1950s.
Люди
Expert insights: Choosing welding helmets and respiratory protection – prioritizing safety over cost
Selecting the right welding helmet and respiratory protection system is crucial for protecting welders in high-risk environments. While cost may factor into decisions, the need for effective, high-quality protection should always come first.
Безопасность, Люди
How does steel welding benefit from special processes?
Welding mild steels may often be considered a simple task. However, welding these steels has specific characteristics that can make the welding process challenging.
Ручная сварка, Вводные сведения о сварке
