Deck 24: Other Welding Processes

Question 1

Any known metal can be melted, even vaporized, by the plasma jet process, making it useful for many welding operations.

Answer 1

True

Question 2

____ is the period during which the electrode force is applied and the welding current is shut off.

A) Off period
B) Squeeze time
C) Weld time
D) Hold time

Answer 2

D

Question 3

In ____ welding, fusion is obtained by directing a highly concentrated beam of coherent light to a very small spot.

A) laser beam
B) ultrasonic
C) resistance
D) inertia

Answer 3

A

Question 4

In ____ welding, one workpiece is fixed in a stationary holding device. The other is clamped in a spindle chuck, which is accelerated rapidly.

A) ultrasonic
B) stud
C) inertia
D) laser beam

Question 5

____ welding is a process for joining similar and dissimilar metals by introducing high-frequency vibrations into the overlapping metals in the area to be joined.

A) Resistance
B) Inertia
C) Laser beam
D) Ultrasonic

Question 6

No melting occurs during the ultrasonic welding cycle.

Question 7

One advantage of electron beam welding is that it does not need to operate in a vacuum.

Question 8

A(n) ____ welding process uses a pistol-shaped welding gun, which holds the stud or fastener to be welded.

A) laser beam
B) stud
C) resistance
D) inertia

Question 9

Tungsten carbide-type electrodes are tougher than chromium carbide electrodes.

Question 10

____ is the time between the first application of electrode force and the first application of welding current.

A) Squeeze time
B) Hold time
C) Weld time
D) Off period

Question 11

____ time is the time during which the electrodes are not contacting the workpieces.

A) Off period
B) Weld time
C) Hold time
D) Squeeze time

Question 12

The welding current required to make a resistance weld must be at a very high voltage but low amperage.

Question 13

In ____ welding, fluxes and filler metals are not required, electrical current does not pass through the weld metal, and only localized heating is generated.

A) laser beam
B) ultrasonic
C) resistance
D) inertia

Question 14

Ultrasonic welding is a form of friction welding.

Question 15

Two advantages of plasmas are higher temperature and better heat transfer to other objects.

Question 16

Resistance welding is ideally suited to high-production methods.

Question 17

In a(n) ____ welding process, the weld is produced by the heat obtained at the interface between the workpieces.

A) ultrasonic
B) resistance spot
C) laser beam
D) inertia

Question 18

____ is the actual time the current flows.

A) Squeeze time
B) Hold time
C) Weld time
D) Off period

Question 19

Using the laser welding process, it is possible to weld heat-treated alloys without undoing the heat treatment.

Question 20

Fluxes or filler metals are needed for the resistance welding process.

Question 21

In _____________________ welding, a plasma jet is produced by forcing gas to flow along an arc restricted electromagnetically as it passes through a nozzle.

Question 22

_____________________ welding is the only method that rivals the heat output of a laser.

Question 23

_____________________ welding is the most common of the various resistance welding processes.

Question 24

_____________________ is defined as the process of obtaining desired properties or dimensions by applying, using oxyfuel or arc welding, an integral layer of metal of one composition onto a surface, an edge, or the point of a base metal of another composition.

Question 25

_____________________ is the process of spraying molten metal onto a surface to form a coating.