Deck 14: Filler Metals

Question 1

What is the typical relationship between most pipe welders and the electrodes they select? ​

Answer 1

Most pipe welders are very selective and often are very loyal to a specific manufacturer's electrode. ​

Question 2

The preheating temperature range can be as high as _____ when welding cast iron. ​

A)1,000°F ​
B)1,200°F ​
C)1,500°F ​
D)2,000°F ​

Answer 2

B

Question 3

Chromium-carbide precipitation is often called _____ precipitation. ​

A)stainless steel​
B)carbon​
C)hydrogen​
D)carbide​

Answer 3

D

Question 4

The AWS specification for stainless steel bare filler rods is _____. ​

A)A5.18​
B)A5.5​
C)A5.9​
D)A5.28​

Question 5

Preheating is required any time the metal to be welded is below _____. ​

Question 6

What are the advantages of postheating? ​

Question 7

The characteristics of each manufacturer's filler metals can be compared to one another by using _____ supplied by the manufacturer. ​

A)pictures​
B)diagrams​
C)samples​
D)data sheets​

Question 8

The atomic symbol H stands for _____. ​

A)atomic hydrogen​
B)molecular hydrogen​
C)water​
D)porosity​

Question 9

Inserts are classified by their cross-sectional _____. ​

A)size​
B)shape​
C)length​
D)width​

Question 10

What happens to dissolved hydrogen as weld metal cools? ​

Question 11

The _____ affects the mechanical and microstructural properties of the pipe and weld. ​

Question 12

_____ slows the cool-down rate following welding. ​

Question 13

The _____ is the temperature of a pipe between weld passes. ​

A)yield point​
B)interpass temperature​
C)postheating temperature​
D)current DC​

Question 14

Why do some manufacturers make more than one type of filler metal that is included in one classification? ​

Question 15

_____ help to reduce the number of repairs or rejections when welding under less-than-ideal conditions. ​

A)Filler metals​
B)Consumable inserts​
C)Electrodes​
D)Chemical pumps​

Question 16

ER308 filler metals are used to weld _____ stainless steels that are used for chemical equipment piping, tanks, pumps, and stainless steel tubing. ​

A)208​
B)308​
C)209​
D)309​

Question 17

As welding progresses on a pipe joint, the heat of the arc can cause the pipe to _____. ​

Question 18

_____ are preplaced filler metals used for the root pass when consistent, high-quality welds are required. ​

Question 19

Which organization developed the most widely used numbering and lettering system? ​

Question 20

A bonded pair of hydrogen atoms is _____. ​

A)molecular hydrogen​
B)atomic hydrogen​
C)water​
D)hydrogen peroxide​