​Why Would an Ingot Need to Be Placed Back in a Furnace

question 4

Multiple Choice

​Why would an ingot need to be placed back in a furnace after it has been cast?

• A) ​To give it time to outgas all of the impurities before it is made into a plate or pipe.
• B) ​To make the temperature consistent across the entire ingot.
• C) ​So that impurities can float out of the ingot making it a better steel.
• D) ​It is a way of tempering the metal to make it harder.

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Definitions:

Indifference Analysis

An economic tool used to analyze and understand consumer preferences, showing combinations of goods between which a consumer is indifferent.

Numerically Measurable

Quantifiable or able to be expressed in numerical terms and measured.

Convex

A shape where a line drawn between any two points on the structure will lie outside it, often used in economics to describe preference curves.