18 Questions
Which material listed below has the poorest weldability?
Martensitic stainless steel
In a fusion weld, which area usually exhibits the highest tensile strength?
Weld metal
An alternative name for a crater crack in welding is:
Star crack
When a lamination extends into the bevel face, what action should the welding inspector request?
Cut back the material until a lamination-free area is found
What is the term for the deviation of the arc during arc welding due to external magnetic influences?
Arc blow
Which factor may affect the weldability of a material?
All of the above
What is a common reason why repair welding is often more difficult than production welding?
All of the above
Hydrogen cracking in weld metal is likely when welding which type of steel?
Carbon Manganese steels
What does EN standard 288 primarily refer to?
Welding procedure approval
Porosity in a weld is typically caused by what factor?
Entrapped gas in the solidifying weld
In a bend test where the face of the specimen is in tension and root is in compression, what type of test is being conducted?
A face bend test
Ultrasonic testing is advantageous in detecting which weld imperfection compared to other NDT methods?
Lack of side wall fusion
What is the result of having a too lower heat input in welding?
An increase in hardness, lower yield strength and lack of fusion.
In which of the following processes is a collet commonly used?
TIG / TAG
Which welding process commonly uses a constant characteristic for sub-arc welding?
Sub-arc < 1000 amps, MMA, Electro slag
Which electrode is suitable for TIG / TAG welding of austenitic stainless steel?
Cerium electrode dc –ve
What is commonly found in the Heat Affected Zone (HAZ) of a fusion weld?
Both A & B
Which standard is related to electrode wire and fluxes for submerged arc welding of carbon steel and medium tensile steel?
BS 2901
Test your knowledge on materials weldability, tensile strength of fusion welds, and alternative names for crater cracks. Questions are based on CAWIP book, page 9.12. Practice and improve your understanding of welding concepts.
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