Which statement best describes the forging process?

• A. Deforming heated solid metal using hammers or dies to increase material strength while maintaining good toughness
• B. Melting metal and pouring into a mold
• C. Removing material with a cutting tool
• D. Cold forming of metal only

Answer: (A)

Forging shapes metal by plastic deformation using hammers or dies, usually with the metal heated so it flows and the grain structure realigns. This heating and deformation strengthens the part and preserves toughness because the grain is continuous and work hardening and flow strengthen the material without introducing melting-related defects. The statement that describes deforming heated solid metal with hammers or dies to increase strength while maintaining toughness captures this essence of forging, including hot forging. In contrast, melting and pouring into a mold is casting, removing material with a cutting tool is machining, and forging is not limited to cold forming even though cold forming is a related technique.