Q. Which of the following processes of metal forming is best suited for making products like aircraft wings and window frames?
✅ Correct Answer: (D)
stretch forming
Explanation: stretch forming is a sheet metal forming process in which the sheet metal is clamped at the edges and stretched by using the dies or form blocks. and no any lubrication is required significantly during the process. this method is best suited for making the products like aircraft wings, window frames, automobile door panels etc.