Magnetic Particle Inspection Level 2 Practice Exam

If a rough forging shows sharp indications running in every direction, what is the likely issue?

1. Forging burst

2. Lap

3. Flake

4. Seam

The correct answer is: Forging burst

When sharp indications are observed running in all directions on a rough forging, the most probable issue is a forging burst. A forging burst is a defect that occurs due to localized overstressing of the material during the forging process, often resulting in cracks or ruptures. These defects can create sharp, well-defined indications that appear random in direction when inspected using magnetic particle testing. The nature of the indications in this case aligns with the characteristic features of a forging burst, as the irregularity and sharpness indicate a serious flaw that has compromised the integrity of the material. This type of defect is particularly concerning in forged components, as it can lead to failure under service conditions if not addressed. Understanding the distinction between forging bursts and other potential defects is critical. For instance, laps and seams typically exhibit elongated shapes and follow the original flow of the material, whereas flakes are more related to internal voids or inclusions that do not usually present as sharp indications in multiple directions. Each of these defects has its own unique characteristics, but in this scenario, the key indicators point to a forging burst as the likely issue.