Torch Parts
Fuel gas hoses must be red and have ______ fittings.
left-hand threaded
______ is the most frequently used fuel gas.
Acetylene
What protects your eyes from sparks, flying debris, and harmful UV radiation?
protective goggles or safety glasses
The oxyfuel cutting process creates oxides that mix with molten iron and produce dross, which is blown from the cut by a jet of ______
Pure Oxygen
3 x 3 x 3 =
27
Dirty tips can be cleaned using a set of ______
tip cleaner
Most fuel gases used for welding are ________
hydrocarbons.
Immediately after setup and periodically thereafter, oxyfuel equipment must be tested for ____
Leaks
The most common material used for marking cutting lines on metal is a form of heat-resistant talc called
Soapstone
What is the formula for finding the area of a rectangle?
L x W = A
A _______ allows gas to flow in one direction only, ensuring that it doesn't flow back into the gas supply and cause damage or contamination.
check valve
_______, which is a liquid solvent, is used inside acetylene cylinders to absorb the gas and make it more stable.
Acetone,
What fabric is the best choice for welding clothing?
Cotton
A _____ will make a long, straight line on metal and is best used on large job
chalk line
What is the formula for finding the circumference of a circle?
C = 2π(pi) x R or
C = π(pi) xD
A _______________ is used to prevent the flame from traveling back into the gas supply, reducing the risk of an explosion.
flashback arrestor
Propane and natural gas are both obtained from the _______ industry
petroleum
What is the recommended distance between the fuel gas cylinder and the oxygen cylinder when storing them?
At least 20 feet (6 meters) or separated by a non-combustible barrier.
The cutting speed should be fast enough so that the _____ have a slight slant backward
drag lines
What is the formula to finding the length of the hypotenuse in a right triangle?
(a² + b² = c²)
Each welding equipment manufacturer uses its own _________ to designate the tip size
numbering system
When hoses are not in use, the gas must be turned off and the pressure _______
bled off
What two major safety problems does hydrogen present?
- hydrogen has no smell, which makes it difficult to detect leaks.
- the molecule is extremely small so that it leaks easily.
What is the material used to manufacture oxygen cylinders?
High-strength metal slug
12 1/2
+ 9 7/8
____________
(give answer in mixed fraction)
22 3/8