Chapter 17/18 Metal Forming

This set of flashcards covers key concepts in metal forming, focusing on hot working and cold working processes.

Hot Working

A mechanical working method that shapes metal, refines its structure, and improves mechanical properties through processes like rolling and forging.

Plastic Deformation

The process of permanently deforming materials under mechanical stress, which can occur in both hot and cold working.

Rolling

A hot working process where ingots are heated and rolled into intermediates like blooms, billets, and slabs.

Forging

A metalworking process where metal is shaped by application of compressive forces, can be done with different techniques like hammer and press forging.

Drop Forging

A forging process using closed dies where the metal is impacted or pressed to fill the die.

Extrusion

A process of forming uniform cross-section shapes by forcing metal through specially shaped dies.

Drawing

A process where metal is pulled through dies to create a closed end hollow component, like cylinders, often requiring reheating.

Cold Working

Working of metal below its recrystallization temperature which distorts the grain structure and improves strength, surface finish, and dimensional accuracy.

Tube Drawing

A specific cold working process for producing tubes with high accuracy and good surface finish, often using lubricants.

Coining

A process that produces shallow indentations and raised designs from parent metal using high forces in closed dies.