Thermatool CFI tube, pipe welding machine delivers power output

Thermatool offers the CFI high-frequency (HF) welder, a solid-state tube and pipe welding machine. With frequencies from 150 to 800 kHz, the machine is based on the company’s HF welding process, and the current-fed inverter (CFI) design allows users to weld almost any metal.

The machine uses the company’s patented AutoMatch™ power and frequency matching and stabilization, which ensures full power output over a range of product sizes. It also provides stable welding frequency, even with changes in weld area setup, tube OD and wall thickness, and impeder material.

The power set point is maintained within 0.5 percent, and fixed frequency is maintained within 1.0 percent. Short-circuit-tolerant CFI technology helps ensure reliable operation through coil arc-overs. The machine is available with traditional contact welder output and with dual induction/contact output for specific applications.

The standard speed/power control simplifies operation and helps reduce scrap through accurate control of weld power in relation to mill speed at startup and ramp-down.