What is Divergency in Welding?

Divergency is the tapered part of the oxygen bore directly behind the throat in high-pressure (high speed) nozzle designs. The divergency allows the high pressure to become close to atmospheric before it leaves the nozzle. This increases stream velocity and improves cut quality by keeping the stream uniform. The increased velocity produces 10-15% higher cutting speeds.

Divergency is an important aspect of welding that helps improve cutting speeds and keep the weld stream uniform.
By allowing the high pressure to become close to atmospheric before it leaves the nozzle, divergency helps increase stream velocity while also improving cut quality.
As a result, welders can experience faster cutting speeds when using a high-pressure (high speed) nozzle with divergency.

Advantages of Divergency

There are many advantages that come with using a divergent nozzle in welding, including:

Increased stream velocity for faster cutting speeds.
Improved cut quality by keeping the weld stream uniform.
Allows high pressure to become close to atmospheric before it leaves the nozzle.

Disadvantages of Divergency

There are a few potential disadvantages associated with divergent nozzles, such as:

The increased stream velocity can cause the weld to over-penetrate the metal, resulting in a weaker weld.
If not used properly, the increased stream velocity can also cause the weld to porosity.

Good to know:

1) Pulse welding

It is a type of welding that uses an electrical current to create a series of pulses. The pulses heat the metal and help create a stronger weld.

2) Beam divergence FWHM parallel to PN junction

It is the angle at which the light beam diverges from the center of the optical fiber. The higher the number, the wider the angle and the greater the amount of light that is sent out sideways from the fiber.