Visual Testing (VT) Practice Exam 2025 – Comprehensive All-in-One Guide for Exam Success!

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A lamination in a rolled ingot may result from the presence of which defect?

Inclusions.

The presence of inclusions in a rolled ingot can cause lamination, which refers to the formation of discontinuities or layers within the material. Inclusions are non-metallic particles or impurities that can be introduced during the processing of metal. These particles can have different properties than the surrounding metal, and when the ingot is subjected to rolling or deformation processes, they can disrupt the uniformity of the material, leading to separation or delamination.

Lamination is a critical defect in rolled products because it can compromise the mechanical integrity and performance of the material, making it essential to identify and control inclusions during production. While other defects, such as seams, glass, or arc strikes, may contribute to various issues in metallurgy, inclusions are specifically linked to the formation of lamination within the ingots.

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Seams.

Glass.

Arc strikes.

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