USU-Eastern WELD 2600 Exam Review

Which of the following processes is the most recently developed?

Additive manufacturing

Which of the following is the variable plotted on a phase diagram's x-axis?

Alloy composition

To improve its ductility, cold-worked metal is often given a thermal cycle called _______.

Annealing

A mechanical property is a characteristic revealed in response to _______.

Applied force

The smallest part of an element that has all the properties of that element is a(n) _______.

Atom

Which of the following is the primary source of scrap steel in the US?

Automobiles

Which process does not change the thickness of sheet metal?

Bending

Pig iron is produced in which of the following furnaces?

Blast furnace

The first alloy made was

Bronze

What information does the Unified Numbering System indicate for each steel type?

Chemical composition

What type of fire extinguisher is suitable for an electrical fire?

Class C

What type of fire extinguisher is suitable for a combustible fire?

Class D

Which of the following is a grade of scrap steel produced by manufacturing firms that recycle production scrap?

Commercial

Which of the following is a grade of scrap steel?

Commercial scrap Mill scrap Postconsumer scrap All of the above

The microstructure of a metal depends on the ______.

Composition Amount of deformation Temperature at which the working is done All of the above

Select the metal that has the highest thermal conductivity.

Copper

The expanding electricity distribution system provided both the capability of producing and the greater need for high-purity _____.

Copper

Which physical property is a chemical property of metals?

Corrosion resistance

When metal changes from liquid to solid, the first crystals to form are called _______.

Dendrites

Which of the following microstructure changes occurs with metals during cold-working?

Dislocation tangles are formed.

What type of equipment is used to forge steel?

Drop forge Hydraulic press Open-face die All of the above

Which quality problem occurs with castings?

Dross Misruns Voids All of the above

If a sample experiences a temporary shape change under load it is in the _______ region.

Elastic

Which of the following is not a method of forming sheet?

Extrusion

Which of the following makes steel products by pushing heated metal through a die?

Extrustion

A meter is equal to 1 million mm.

False

All steel with the same composition will have the same properties

False

As long as metal parts are not glowing, they are safe to handle.

False

Bainite is stronger than martensite.

False

Cast steel typically has better toughness than forged steel.

False

Fine pearlite has lower strength than coarse pearlite.

False

Ingot cast steel has a more uniform microstructure than continuously cast steel.

False

Integrated steel mills make most of the steel in the US today.

False

Metallurgy is an ancient art that no longer changes.

False

Most jobs supply safety training after a trial period on the job.

False

Only people directly making metal parts need to know about metallurgy.

False

Safety data sheets explain the dangers and precautions related to different types of fires in the workplace.

False

The atomic number represents the number of neutrons in the nucleus.

False

When one step in processing is changed, there will be little or no effect on the final part properties

False

When two different substances are mixed together but remain unchanged individually, it is called a solution.

False

Hardness testing is sometimes used instead of tensile testing because it is ________.

Faster

The ability of an object to resist a load while being repeatedly loaded is _______ strength.

Fatigue

All metals whose major component is iron are classified as _____.

Ferrous

Which of the following makes metal products by pressing or hammering heated metal?

Forging

Which welding process spins one of the parent metal parts and presses it against the other?

Friction welding

Which one of these describes metals?

Good conductor of heat and electricity

Which one of these is not part of an atom?

Grain

The energy required to break a metal sample in a fast-moving test is a measurement of the metal's _______.

Impact strength

Continuous casting of steel has mostly replaced the _____ method.

Ingot casting

Cementite is also known as ______.

Iron carbide

Which of these is an advantage of the forging process?

It produces parts with high impact strength.

What holds molten steel when transported from the melting furnace to the pouring floor?

Ladle

Select the metal that has the highest density.

Lead

When metal is cold-worked, it becomes ______.

Less ductile

Which steel microstructure is the most brittle?

Martensite

An alloy is a substance comprised of two or more ____.

Metals

The first type of ferrous metal used by early human beings was _____ iron.

Meteoric

These are responsible for the properties seen in metals.

Microstructures

Which of the following is a safety hazard associated with forging?

Noise

If a sample is unable to return to its exact original shape it has undergone ________ deformation.

Plastic

New crystals form when cold-worked metal is heated to this temperature.

Recrystallization

Which of the following is a reason to perform heat treatment?

Relieve internal stresses Hardening Drive out hydrogen All of the above

OSHA was created to ensure ______.

Safety for all workers

What is the most frequently requited personal protective equipment (PPE)?

Safety glasses

Which of the following are inhibitors to dislocation motion?

Second-phase particles Grain boundaries Tangles All of the above

Which of the following is not a common machine safety feature?

Single on-off toggle switch

Metal phase diagrams show what phase or phases should be present for _______.

Slow to moderate cooling rates

Which of the following joining processes is performed at the lowest temperature?

Soldering

Select the metal that has the highest melting point.

Steel

Which of the following is the variable potted on a phase diagram's y-axis?

Temperature

What is springback?

Tendency of an object to return to its original shape

Which of the following variables is plotted on the x-axis of an isothermal transformation (IT) diagram?

Time

A material's modulus of elasticity is an expression of its stiffness.

True

A meter is the SI unit of measure foe length.

True

ASTM International publishes many mechanical property testing procedures.

True

An atom is smaller than a molecule.

True

Bronze is an alloy of copper and tin.

True

Carbon is an important alloying element of iron.

True

Casting is used to produce complex shaped parts.

True

During hot-rolling, recrystallization produces small grains.

True

Electrons surround the nucleus of an atom.

True

Ingots produce less-uniform steel than continuously cast strands.

True

Iron and steel are ferrous metals

True

Manufacturing typically involves performing several processes to obtain the final part.

True

Metal with a higher yield strength is often desirable for a durable, quality product.

True

Metals often form compounds with nonmetals.

True

Most jobs supply personal protective equipment when first starting on a job.

True

SAE material designations usually include processing and annealing conditions.

True

Some equipment, such as punch presses or large hammers, will require hearing protection.

True

Steel was the first alloy made.

True

Stress is measured in units of psi or Pa.

True

Tempering is done after steel has been quenched.

True

The nose of an IT diagram shows the shortest time for an alloy to transform from austenite to pearlite.

True

The primary source of scrap steel in the United States is automobiles.

True

Wrought iron was produced before steel was.

True

Which of the following steel designation systems identifies carbon and low-alloy steels with the letter "G" and five numbers?

UNS

Which of the following processes produces a metallurgical bond?

Welding Brazing Soldering All of the above

_____ is a ferrous metal that contains very little carbon.

Wrought iron