Deck 15: Welding Metallurgy

Question 1

What are the five most common types of corrosion that piping systems are affected by? ​

Answer 1

The five most common types of corrosion that piping systems are affected by are uniform or general corrosion, galvanic corrosion, crevice corrosion, localized or pitting corrosion, and exfoliation corrosion. ​

Question 2

_____ is the most commonly used piping material. ​

Answer 2

Carbon steel

Question 3

Carbon steel pipe is also referred to as steel pipe or _____ pipe. ​

A)hard​
B)carbon​
C)black iron​
D)black steel​

Answer 3

C

Question 4

Each _____ has a well-defined set of specifications covering the manufacturing process and chemical composition of pipes and fittings that fall within each standard. ​

A)pipe grade​
B)mechanical property​
C)pipe standard​
D)yield point​

Question 5

_____ strength is a measure of the load that breaks a specimen. ​

A)Ultimate​
B)Compressive​
C)Shear​
D)Torsional​

Question 6

_____ is the ability of a pipe to be bent or formed without cracking or breaking. ​

A)Hardness​
B)Ductility​
C)Brittleness​
D)Toughness​

Question 7

_____ is the change in volume that metal has as the result of being heated. ​

Question 8

The _____ is the point during tensile loading when the pipe's metal stops stretching and begins to be made permanently longer by deforming. ​

Question 9

_____ is the ability of a material to return to its original form after a load is removed. ​

A)Strength​
B)Elasticity​
C)Corrosion​
D)Elastic limit​

Question 10

Name the four common types of strength measurements. ​

Question 11

_____ further defines the manufacturing process and chemical composition that give each grade its unique process. ​

A)Pipe grade​
B)Mechanical property​
C)Pipe standard​
D)Yield point​

Question 12

What are some common stresses that might deform a pipe? ​

Question 13

_____ corrosion occurs between two different types of metal that are placed together or within the same corrosive environment. ​

Question 14

Metals with higher values of coefficients of expansion tend to _____ more during welding. ​

A)conduct​
B)heat​
C)distort​
D)expand​

Question 15

What is the difference between heat and temperature? ​

Question 16

_____ may be defined as resistance to penetration. ​

Question 17

_____ is the property that allows a pipe to withstand forces, sudden shock, or bends without fracturing. ​

A)Strength​
B)Ductility​
C)Brittleness​
D)Toughness​

Question 18

Name the four groups of alloys that stainless steels consist of. ​

Question 19

_____ is the amount of strain needed to deform a test specimen permanently. ​

A)Tensile strength​
B)Yield strength​
C)Yield point​
D)Ductility​

Question 20

Corrosion is the slow removal of a pipe's surface due to _____. ​

A)elasticity​
B)oxidation​
C)brittleness​
D)ductility​