Welding Flashcards
Which metal when heated or welded can produce fume fever is the fumes are inhaled?
Zinc
Fumes are:
Small, condensed particles of metal that have vapourized
Which type of radiant energy can cause welding flash?
Ultraviolet light
Permanent eye damage in the form of cataracts or retina damage may result from over expusiere to what harmful light ray?
Infrared
What type of gloves are recommended for oxyfuel cutting?
Dry-tanned leather gauntlet style
Which type of material offers the best protection against sparks & molten slag?
Leather
What device breaks the current flow while still at a low level to protect people for electrical shock?
Ground fault circuit interrupter (GFCI)
How long after hot work is completed shout the fire watch look for fires?
60 minutes
What is the meaning of the acronym OHS?
Occupational health and safety
What should you do immediately if you receive a major contact burn?
Cool the burned area by immersing in cool, still water
Exposure to infrared light without proper eye protection can cause:
Retina damage
Temporary blindness is caused by the eyes exposed to high levels of..
Visible light
Permanent eye damage in the form of cataracts may result from over exposure to which harmful light ray?
Infrared
When cutting or welding on metals plated with cadmium:
Appropriate respiratory protective equipment should be used
When oxygen reacts with ultraviolet light from welding, what gas is produced?
Ozone
The five basic types of joints are :
Butt, tee, lap, edge and corner
A butt joint is a welded joint where the parts joined..
Lie in the same plane
The four main types of welds are :
Groove, fillet, plug (or slot) and surfacing
What joints would you find a fillet weld?
Tee, lap and corner
What may be done to reinforce welds made on a lap joint?
Place plug or slot welds along the joint
Edge joints are most often used on :
Sheet metal
What is the primary factor in the selection of the joint type?
Strength and loading requirements
Selecting a joint preparation that requires the least amount of filler metal would :
Minimize distortion and lower cost factors
Term:
The resistant of a material to a force trying to pull it apart
Tensile strength
Term:
The ability of a metal to be cold worked without a great deal of resistance
Malleability
Term:
The ability of a metal to resist indentation or penetration
Hardness
Ferrous metal has a high content of:
Iron
If given two identical pieces or zinc die cast and aluminum, what would be the simplest way to identify them?
By their weight
How is cast iron distinguished from low carbon steel in a spark test?
The sparks given off by cast iron are short with red bursts near the grinder
Which gas is produced using the liquefaction process?
Oxygen
What should be done before the cylinder valve protective caps are removed?
Cylinders should be secured
To protect the regulator gauges from being damaged, you must..
Release the adjusting screw before you open the cylinder valve
