Cwi welding inspection - Study guides, Class notes & Summaries

What are the four things that happen to metal as it is heated? - 1) energy is added to the structure 2) the atoms move further apart 3) the atoms vibrate more vigorously 4) the metal expands What state of matter exhibits the least amount of energy? - solid The non uniform heating produced by the welding operation creates the problem of ________ in weldments. - distortion

What are types of standards that contain job quality requirements? - Codes Drawings Specifications Standards What are the three types of standards that may be considered mandatory? - Codes Specifications Standards What is the job document that best describes the size and configuration of a weldment? - Drawings

A thermal treatment that follows quenching and restores some of the metal's ductility is referred to as: - Tempering Which of the methods is most often used to eliminate the high residual stress created by welding? - Postweld heat treating The physical principle that permits the migration of liquid penetrant into very fine surface discontinuities is: - Capillary action

What are the three general types of soundness test? - 1) Bend 2) Fillet Break 3) Nick Break What is the type of testing used to evaluate the type of microstructure present in a metal? - Metallographic What are four tests that can be used to judge the soundness of a weld? - 1) Nick Break

When inspecting unfired pressure vessels to the ASME Code, the inspector will usually use several different Sections - True In what Section of the ASME Code are the filler materials found? - Section II, Part C Standards are never considered mandatory. - False

What is the temperature that will change microstructural alignment when steel is heated above the lower transformation temperature (A1)? - 1333*F Atoms in the solid (frozen) state: - 1) have a specific "home" position 2) are essentially fixed in a definite structured position What is the heat input for a molten weld pool at 5 imp travel speed, 25 volts, and 100 amperes? - 30,000 J/in.

How should inspection report corrections be made? - Single-line out the error, correct the error, date and initial A definition of ethics is: - 1) Using common sense and honesty 2) Living by the rules 3) Being fair and impartial 4) Basing decisions on facts

What determines the size of a spot weld? - Diameter of weld at point of contact The primary element of any welding symbol is referred to as the: - Reference line What does information appearing above the reference line refer to? - Other side The graphic description of the type of weld is called the: - Weld symbol

Which of the following metals cannot be efficiently cut with OFC? Correct Answer - 1)Stainless steel 2)Cast iron Electrical conductivity of part is the primary requirement for which NDE method? Correct Answer - ET The melting point of carbon steel is approximately: Correct Answer - 2780°F Decibel is a term associated with which NDE method? Correct Answer - UT Which GMAW metal transfer mode results in the least amount of penetration? Correct Answer - Short Circuiting Which of the...

Welding Inspector Certified Exam: Part A Questions and Answers 100% Correct Nondestructive examination - Determines the suitability of a material or compound without compromising its serviceability. Identifies flaws discontinuities and other imperfections, then determines whether they exceed the allowable tolerance of a specification. Ultrasonic testing is one of the most common forms used. Destructive examination - The test specimen is damaged, destroyed, or otherwise rendered unservice...