What does stamping involve in metalworking?

Stamping in metalworking is a process that involves pressing shapes into metal sheets using a stamping press. This method is widely used to create specific shapes and designs in various materials, particularly sheet metal. The stamping process can include a variety of operations such as cutting, bending, or deforming the metal to achieve the desired form.

The reason option B is the correct choice is that it directly describes this action of using pressure to shape materials, which is at the heart of the stamping technique. It is often employed in manufacturing for producing items like automotive parts, appliances, and numerous other products where precision and efficiency in forming metal sheets are crucial.

In contrast, pouring liquid metal into molds pertains to casting processes, which is a different method of shaping metal entirely and does not involve stamping. Heating metals to high temperatures is indicative of processes like forging or heat treatment, which also differ from stamping. Finally, casting and cooling metals into solid forms describe the casting process, which involves pouring molten metal into a mold and allowing it to solidify, thus differing significantly from the principles of stamping.