Article collection
A collection of four articles published in the Tube & Pipe Technology magazine.
Weldac is EFD Induction’s family of high-output, solid-state tube and pipe welders. The Weldac family covers a wide range of power sizes; from 50 kW up to 2200 kW. and a frequency range of 60-500 kHz.
The first welder in the world with 1000 kW in a single cabinet solution. EFD Induction has always been at the forefront in developing equipment with the best power-to-volume ratio.
Double cabinet welder. The Weldac family covers a wide range of power sizes—from 50 kW up to 2200 kW.
Coil changes take only seconds, with the frequency adjusting automatically to each tube dimension.
Weldac’s automatic load matching ensures full output power across a wide range of tube sizes. There are no ‘unsafe’ operating areas. When a different- sized coil is fitted, Weldac automatically matches to the best setting.
Automated induction longitudinal welding is a reliable, high-throughput process
Weldac’s efficiency from input at the rectifier to output at the coil is 85-87%.
Weldac can be fitted with various induction coils or with quick-lifting contact heads.
The low power consumption and high efficiency of EFD Induction welding systems reduce costs.
The high-speed throughput and reliability of induction welding makes it perfect for the tube and pipe industry.
Ferrite for high-frequency tube welding
We offer a full range of consumables including coils, ferrite, impeders and tube scarfing equipment.
A collection of four articles published in the Tube & Pipe Technology magazine.
The EFD Induction Weldac: What it is, how it works and why you should care.
The authors evaluate the parameters that influence welder performance and scrap production during changeover in the high-frequency tube and pipe welding process.
This article explains some basic principles of solid-state welder design that are crucial for maintaining operation under various conditions.
The authors evaluate the parameters influencing weld quality and scrap production in high-frequency tube and pipe welding. The paper focuses on the welder. Two stages of the production process – steady state operation and non-ideal conditions – are investigated. The parameters involved are ripple in output power and short circuits in the load.
The article investigates the impact that geometrical changes in the weld zone have on weld frequency and the Heat Affected Zone (HAZ).
