Visual Testing (VT) Practice Exam

Disable ads (and more) with a membership for a one time $2.99 payment

Prepare for the Visual Testing Exam! Use our flashcards and diverse question formats with hints and explanations to help you grasp key concepts. Ace your VT Exam confidently!

Practice this question and more.

What is a hole produced during the solidification of metal due to escaping gases called?

burst
cold shut
flaking
blow hole

The correct answer is: blow hole

A hole produced during the solidification of metal due to escaping gases is referred to as a blow hole. This phenomenon occurs when gases that are trapped in the molten metal escape as the metal solidifies, leaving behind a cavity or hole. Blow holes are typically associated with issues such as inadequate venting or excessive humidity during the casting process, which can lead to gas entrapment. Blow holes can compromise the structural integrity of the final product, making it crucial for foundries and manufacturers to monitor and control their casting environments to minimize the occurrence of these defects. Understanding this specific defect is essential for quality assurance in metalworking and casting processes.