Shot peening offers cost-effective way to make stronger metal products
Medieval soldiers did it to strengthen their armor, Civil War engineers did it to improve gun and cannon barrels, railroad men did it to locomotive axles before they rolled into the untamed West and Henry Ford did it to enhance parts bound for his new invention, the assembly line. More recently, aircraft manufacturers began doing it to virtually every square inch of their metal wares before sending them skyward. What shared action connects these warriors, inventors and manufacturers? The cold working of metal workpieces.
