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CWB WELDING INSPECTOR LEVEL 1 - CHAPTER 4 QUESTIONS AND ANSWERS WITH SOLUTIONS 2024
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CWB WELDING INSPECTOR LEVEL 1 - CHAPTER 4 QUESTIONS AND ANSWERS WITH SOLUTIONS 2024
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CWB WELDING INSPECTOR LEVEL 1 -CHAPTER 4 QUESTIONS AND ANSWERS
WITH SOLUTIONS 2024
Select the non-ferrous metal from the following. - ANSWER Copper
Why is it important to have procedures in place for the storage and handling of stainless steels? -
ANSWER Stainless steels are effected by contamination and procedures should be in place to ensure the
corrosion resistance is maintained.
Limestone is a fluxing agent that removes impurities to form a slag. - ANSWER True
Hot shortness is: - ANSWER cracking susceptibility caused by high sulphur content.
Stainless steels acquire their special stainless properties from the presence of chromium. What
percentage of chromium is required? - ANSWER More than 10%
P groupings in ASME Section IX are used to group steels for procedure qualification testing. - ANSWER
True
Which elements are added to molten steel specifically for deoxidation purposes? - ANSWER Silicon and
aluminum
Ferrite, austenite, and cementite are know as: - ANSWER phases.
In CSA standard G40.21M, what does the AT designation mean? - ANSWER Atmospheric corrosion-
resistance weldable notch tough steel
What phase distorts the BCC structure and results in a very hard needle-like structure? - ANSWER
Martensite
, When making steel, the first process is to convert iron ore into pig iron. Which furnace is used for this
process? - ANSWER Blast furnace
Why is it desirable to have a small grain structure in steels? - ANSWER Small grain size increases strength
and toughness
Metals have a crystalline structure in which the atoms are arranged in an irregular pattern. - ANSWER
They are arranged in a regular pattern
Steel with up to 0.8% carbon heated above 723 °C is: - ANSWER single phase austenite
Resistance to tempering is a term that describes a material's ability to retain: - ANSWER hardness at high
temperature.
The ability of a steel to form martensite at a given cooling rate is called: - ANSWER Hardenability
The grouping of steels referred to as carbon steels can obtain a wide range of properties by varying the: -
ANSWER Carbon Content
What is the difference between annealing and normalizing? - ANSWER Normalizing is a treatment that
involves heating into the fully austenitic region followed by air cooling. Annealing is a treatment which
involves heating into the fully austenitic region followed by furnace cooling.
What designates that AISI 4340 refers to Nickel-Chromium-Molybdenum steel? - ANSWER The first two
digits
When working with stainless steel, what does the term pickling refer to? - ANSWER Chemical treatment
to corrode the surface in a controlled fashion
Ferrite is the phase that at room temperature contains almost: - ANSWER No Carbon
Molten steel can either cast in individual ingots or continuous casting: - ANSWER True
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