Precision and fast energy storage welding

Can modified tungsten inert gas welding improve arc energy density?

Through collecting, sorting, and analysing the research data of tungsten inert gas (TIG) welding in China and abroad, the modified TIG welding and ways to realise the improvement of the arc energy density are summarised. Based on the existing literature, two methods have been employed to improve the arc energy density.

How to improve the energy density of TIG welding arc?

Based on this, many methods to improve the energy density of TIG welding arc are devised. These include activating flux TIG (A-TIG), twin-electrode TIG (T-TIG), keyhole TIG (K-TIG), high-frequency pulse TIG (H-TIG), ultrasonic-TIG hybrid arc (U-TIG), magnetic field control TIG (M-TIG), and hollow tungsten central negative pressure arc welding.

Why is welding a preferred processing method in additive manufacturing?

It not only enlarges the application scope of the existing welding technology and improves production efficiency and product quality but also is the preferred processing method in many new manufacturing fields such as additive manufacturing. The future research will focus on the selection of coupling factors and the mechanism of their interactions.

How to determine high-efficiency TIG welding process?

Establishing more effective models, studying high temperature properties of materials, determining accurate boundary conditions, and using more rational calculation methods have significant meanings to achieving the determination of high-efficiency TIG welding process and the prediction and control of welding quality.

Why is deep penetration welding important in additive manufacturing?

In additive manufacturing using powders, it is necessary to minimize vaporization and reduce potential defects that easily arise in deep penetration welding. Keyhole mode, also known as deep penetration welding, requires concomitant melting and vaporization. Benefits include deep penetration, low heat input, and narrow heat affected zones.

What are high-energy density beam processes for welding?

High-energy density beam processes for welding, including laser beam welding and electron beam welding, are essential processes in many industries and provide unique characteristics that are not available with other processes used for welding.