METAL FOUNDRY & FORMING PROCES

What does metal forming involve?

• Machining and cutting

• Pressing, squeezing, or rolling

• Melting and casting

• Welding and joining

What property of metals does forming depend on?

• Ductility

• Malleability

• Plasticity

• Elasticity

What is the most important of all the metal forming processes?

• Cold rolling

• Hot rolling

• Extrusion

• Forging

What does the slabbing mill do to 14-ton ingots?

• Reduces them into slabs about eight inches thick

• Melts them down

• Cuts them into smaller pieces

• Shapes them into tubes

What is the effect of hot rolling on metal?

• Makes the metal brittle

• Makes the metal tougher and more resistant to failure

• Makes the metal softer

• Decreases the metal's strength

What is the purpose of lubricants in cold rolling?

• To reduce friction and carry away some of the heat produced

• To cool down the machinery

• To increase the metal's hardness

• To polish the metal surface

What happens to the metal's grain structure after cold rolling?

• It becomes finer and more uniform

• It remains unchanged

• It disappears and is replaced by a crystalline structure

• It becomes lengthened in the direction of rolling

What process is used to restore softness and ductility to metal after cold rolling?

• Quenching

• Annealing

• Tempering

• Hardening

What is the purpose of forging?

• To make metal sheets

• To create intricate shapes or large parts

• To refine metal ores

• To produce metal powders

How does drop forging affect the metal's grain?

• It makes the grain structure irregular

• It has no effect on the grain structure

• It disrupts the grain structure completely

• It causes the grain to follow the shape of the die