What are the motivations for heating the metal to above the recrystallization temperature before working to shape it?

For the following statements, indicate if they better describe open or closed dies forging.

1) Parting line and draft angles are required.

2) To fabricate a part, usually many different dies could be used to progressively shape the workpiece.  

3) Parts are designed to reduce the amount the metal needs to flow vertically upwards into the die cavity to reduce wear on the die.  

4) More suitable for automation and larger production runs. 

During the lab last week, the biggest challenge to metal casting experienced by most teams is:

The basic Solidworks operation

If that surface with a draft angle is not a functional surface, I would

If that surface with a draft angle is a functional surface, I would

Match the following processes in the right order/sequence for Investment Casting

Match the correct description for the following processes respectively:

Which of the two processes were used in making the component shown in the image below as described in the recorded lecture?

Which one of these is not an advantage for shell moulding, compared to conventional sand casting?

In an automated shell moulding process, it is not possible to add a core.

Which of the following is a good reason to opt for Die Casting if the thickness of the product is kept thin (to a few mm)?