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Welding Flashcards

1
Q

What burn penetrates skin to the flesh below

A

2nd degree burn

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2
Q

Most dangerous type of light ray emitted by welding

A

Infrared

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3
Q

Cylinders of compressed inert gasses are not flammable or reactive and are not dangerous

T or f

A

False

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4
Q

Welding lenses will protect your eyes from what percentage of harmful light rays

A

99%

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5
Q

List the three types of clothing in order of ability to protect, starting with the best

A

Leather
Wool/tweed
Cotton/denim

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6
Q

A face shield or safety goggles will protect your eyes when performing what actions

A

Chipping or grinding

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7
Q

Screens or blinds are out up to protect what

A

People and equiptment

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8
Q

List three components of fire

A

Heat air fuel

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9
Q

There are five classes of fire, for each class, list the type of combustible involved

A

Class a : wood paper
Class b: oil grease
Class c: electrical components
Class d: combustible metals
Class k: kitchen fires

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10
Q

Who’s responsibility is it to determine hazards

A

You

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11
Q

What is the maximum safe working pressure for acetylene

A

15 psi

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12
Q

Acetylene cylinders are protected against explosions by the use of

A

Fusible plugs

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13
Q

Oxygen cylinders are protected against explosions by the use of

A

Frangible disc

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14
Q

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

A

GMAW

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15
Q

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

A

FCAW

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16
Q

Joining of light gauge material with a SMAW power source may be accomplished using what process

A

Carbon arc welding

17
Q

The three types of flames available for OAW are

A

Carbonizing
Neutral
Oxidizing

18
Q

If the oxygen connection is difficult to make, it should be oiled to lubricate the fitting
T or f

A

False

19
Q

Where does a burn back occur

A

Between tip and mixer

20
Q

Where does a flashback occur

A

Between mixer and regulators

21
Q

Copper tubing can be used to splice a damaged hose

T or f

A

False

22
Q

Braze welding does not involve the melting of the parent materials
T or f

A

True

23
Q

Brazing sheet metal requires a filler material made from what

A

Brass

24
Q

What are the purposes of fluxes in braze welding

A

Cleans oxides
Protect weld

25
Q

2 types of joints used for braze welding

A

Butt joint
Lap joint

26
Q

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

A

Oxidization

27
Q

The oxygen torch valve on the handle of a combination cutting/welding outfit should be opened ———— for cutting

A

Fully

28
Q

Plasma arc cutting equiptment uses———— energy to create the heat necessary for cutting

A

Electric

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