Tungsten Inclusions in Welding Process

What are the two primary ways in which tungsten inclusions can appear in a weld?

a. Scattered in fine particles.

b. As a large broken tip.

c. As a property of the weld.

d. Both A and B.

Answer:

Tungsten inclusions can appear in a weld in two ways: scattered in fine particles or as a large broken tip.

In the process of welding, tungsten inclusions can certainly appear. These inclusions take two primary forms, both of which are possible during the welding process.

Firstly, tungsten inclusions can appear scattered in fine particles, visible throughout the weld. This typically happens when the tungsten electrode unintentionally comes into contact with the weld pool.

Secondly, tungsten inclusions can also appear as a large broken tip. In this scenario, a portion of the tungsten electrode tip breaks off and becomes embedded in the weld. This often occurs due to improper welding technique, such as overheating or applying excessive pressure on the electrode tip.

Therefore, the correct answer to the query 'What are the two primary ways in which tungsten inclusions can appear in a weld?' is 'Both A and B'.

It's important for welders to pay attention to their welding technique and the handling of the tungsten electrode to avoid these types of inclusions in the final weld.