Power Delivery Methods For Welding

The mode of metal transfer is an important concept in welding. The method in which the metal is transferred is largely determined by the parameters of the weld and the shielding gas composition.

Short Circuit Welding

Short circuit metal transfer uses a wire that generates hundreds of short circuits a second. This is done using argon and CO2. The advantage of this approach is that it has a high travel speed and does not have a position limitation. It is often used in situations where the welder needs rapid solidification. It also is carried out at lower current values than with other methods. This is an ideal welding method when you need to weld a thin piece of material. Adjustable slope and insurance controls are needed to reduce splatter when using this method.

Globular Welding

The globular method of metal transfer completely uses CO2. Globs of metal form at the end of a wire and fall into a weld pool. Splatter is much more common with this welding method. The splatter can lead to a beat appearance and incomplete fusion. However, this method has been used in the past when high production was necessary. The globular is usually larger than the diameter of the diode.

Axial Spray Welding

When welding thicker materials, it's more common to use an axial spray. This method requires a higher current, so it produces finer droplets. Splatter is almost completely eliminated with this method. It is also an ideal method when you are concerned with the appearance of the product, since it is less likely to produce cosmetic defects. The spray is similar to water coming out of a garden hose. To achieve this method of welding, you will need to use a large amount of argon gas as a shielding gas. 

Pulse Spray Welding

A pulse spray is a variant of the other spray method. In this case, the power cycles between a high spray and a low spray. This gives the weld pool time to cool. This is ideal when high speeds are not necessary and when you are trying to achieve a high-quality weld. It is ideal for creating a side-wall fusion.

If you're a business that needs welding but does not want to hire and train staff to handle all your welding needs, one option is to turn to welding services. Then, you can hire professionals who can use the optimal welding techniques for your application.