CD CD Drafter Materials & Manufacturing Processes 3

Question 1

A drawing note specifying 'REMOVE ALL BURRS AND SHARP EDGES' applies to which manufacturing concern?

Accepted Answer

Post-machining surface cleanup

Answer

Raw material selection

Answer

Heat treatment

Answer

Coating application

Question 2

What does 'cold working' do to the mechanical properties of a metal?

Accepted Answer

Increases strength and hardness while decreasing ductility

Answer

Increases ductility and toughness

Answer

Has no effect on mechanical properties

Answer

Decreases strength

Question 3

Which standard body publishes material specifications such as A108, A36, and A514 for carbon and alloy steels?

Accepted Answer

ASTM International

Answer

ANSI

Answer

ISO

Answer

SAE International

Question 4

What is the purpose of annealing a metal part?

Accepted Answer

To relieve internal stresses and improve ductility

Answer

To increase surface hardness

Answer

To add a corrosion-resistant coating

Answer

To increase tensile strength

Question 5

Which of the following best describes the extrusion manufacturing process?

Accepted Answer

Forcing material through a shaped die to create a continuous profile

Answer

Removing material with a cutting tool

Answer

Pouring molten metal into a mold

Answer

Pressing sheet metal into a shape with a punch and die

Question 6

A drafter must specify a corrosion-resistant coating for a steel part used outdoors. Which specification is commonly called out on the drawing?

Accepted Answer

Hot-dip galvanizing per ASTM A123

Answer

Annealing per ASTM A684

Answer

Quench hardening per ASTM A255

Answer

Cold drawing per ASTM A108