Based on the experiment of twin-wire narrow gap welding in single pool mode by employing alternative pulsed arcs, the influences of welding parameters on the appearance of weld and welding process stability were investigated.

Lateral oscillation arc welding, high-speed-rotating arc welding, twin-wire welding, and ultra NGW(narrow gap welding) can all assure the fusion of side wall and improve the oppearance of weld in relatively small welding variables.

The hollow-axis motor drives the offset nozzle and rotates the arc on the tip of wire at high speed,so as to ensure enough penetration into the sidewalls in narrow gap welding.

The polymer PPDFcE is indeed a small bandgap co.

With the new technology of dielectric barrier, the reduced field reaches 300Td in the narrow discharge gap, and the electrons gain the average energy of 8eV.

Microstructure and properties of welded joint for narrow gap laser welding of 42CrMo steel bevel gear shaft;

In the view of the welding problem of high strength aluminum alloy with thick plate, an innovative narrow gap welding process with a 3.

The feature of double-wire narrow gap SAW and the performance of domestic equipment were discussed.