You are going to bend a steel rod through an angle of 90 o . It is often necessary to heat the rod locally in the vicinity of the bend in order to complete the bend. What might be the most important disadvantage of heating the metal to complete the bend?

Question

You are going to bend a steel rod through an angle of 90 o . It is often necessary to heat the rod locally in the vicinity of the bend in order to complete the bend. What might be the most important disadvantage of heating the metal to complete the bend?

Accepted Answer

The overall properties of the bent rod will vary along the length of the bar

Answer

The bar will oxidize on heating and become unusable

Answer

It is expensive to stop the bending to reheat the bar

Answer

Cracking will occur in the region which is heated to the lowest temperature

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You are going to bend a steel rod through an angle of 90 o . It is often necessa...

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