Welding And Cutting Processes (110103f)

Question 1

What does OAW stand for?

Answer 1

Oxygen and acetylene welding

Question 2

What does SMAW stand for?

Answer 2

Shielded metal arc welding

Question 3

What does GMAW stand for?

Answer 3

Gas metal arc welding

Question 4

What does GTAW stand for?

Answer 4

Gas tungsten arc welding

Question 5

What does FCAW stand for?

Answer 5

Flux core arc welding

Question 6

Shielded metal arc welding us know as what?

Answer 6

Stick welding

Question 7

Gas metal arc welding is know as?

Answer 7

Mig welding

Question 8

A process using a continuous, solid wire electrode and an inert shielding is?

Answer 8

GMAW
Gas metal arc welding

Question 9

A process using a continuous, hollow wire electrode with or without shielding gas is?

Answer 9

FCAW
Flux cored arc welding
Mostly known as gasless mig welder

Question 10

Three types of flames available for OAW (oxygen and acetylene welding) are?

Answer 10

Carbonizing
Neutral
Oxidizing

Question 11

If the oxygen connection is difficult to make it should be oiled to lubricant the fitting true or false?

Answer 11

False

Question 12

Where does a burnback occur?

Answer 12

Between the tip and mixer

Question 13

Where does a flashback occur?

Answer 13

Between the mixer and regulators

Question 14

Copper tubing can be used to spice a damaged hose true or false?

Answer 14

False

Question 15

Braze welding does not involve the melting of the parent materials true or false?

Answer 15

True

Question 16

Brazing sheet metal requires a filler material made from what?

Answer 16

Brass

Question 17

What are the purposes of fluxes in braze welding?

Answer 17

Clean the oxides
Protect the weld

Question 18

List the two types of joints used for braze welding?

Answer 18

Butt joint
Lap joint

Question 19

Oxy acetylene and plasma cutting do not actually cut the metal the metal separates due to?

Answer 19

Oxidization of the metal

Question 20

The oxygen torch valve on the handle of a cutting/ welding outfit should be opened how much for cutting?

Answer 20

Fully

Question 21

What does a plasma arc use to create heat necessary for cutting?

Answer 21

Electric energy

Question 22

What is a backfire?

Answer 22

The flame backs up into the tip and re-establishes itself with a bang or pop

Question 23

What is burnback?

Answer 23

This is when combustion takes place steadily in the tip and mixer and since the mixture of gases is too lean for proper combustion, black smoke, red sparks and a screeching sound can occur

Question 24

What is a flashback?

Answer 24

This is when one gas may back up into the other line forming an explosive mixture and resulting in an explosion

Question 25

What materials are suitable for cutting with an oxyacetylene torch?

Answer 25

Ferrous metals such as steel

Question 26

What materials are not suitable for cutting with an oxyacetlene torch?

Answer 26

Non ferrous metals such as copper, brass, bronze, aluminum

Question 27

What are three main types of cutting torches?

Answer 27

• Combination welding and cutting
• heavy duty hand cutting torch
• machine torches

Question 28

What does a plasma torch use to cut through metal?

Answer 28

A plasma arc cutter uses compressed gas and electricity to produce a finely focused super heated plasma flow that can cut through metal

Question 29

What is a reasonable tip diameter of a welding tip?

Answer 29

1/8 plus two metal thickness of the gauge of metal being used

Question 30

How is one way to test your spot weld quality?

Answer 30

On a test piece or scrap pieces

Question 31

What is the first step for a complete shutdown of an oxyacetylene torch?

Answer 31

Close the oxygen cylinder valve first

Question 32

Iron and steels oxidize slowly in moist air to form?

Answer 32

The oxide known as rust