test4 harfacing

Question 1

Which of the welding processes is very popular for hardfacing because of its low equipment cost, versatility and general ease of application

Answer 1

SMAW

Question 2

Which method of hardfacing is the slowest process

Answer 2

GTAW

Question 3

What is a disadvantage of the FCAW surfacing process as compared to GMAW surfacing

Answer 3

slag inclusions may need to be removed

Question 4

What is an advantage of the MCAW surfacing process compared to GMAW surfacing

Answer 4

little to no slag

Question 5

Which arc welding surfacing method uses high currents and high deposition rates, leaves no spatter and emits no harmful uv radiation

Answer 5

SAW

Question 6

What is true about the oxyfuel gas hard surfacing process

Answer 6

it has low metal dilution

Question 7

A sliding/scaping type of wear that removes metal by gouging or grinding is called

Answer 7

abrasion

Question 8

A gouging type of wear that washes away or groves out the metal surface is called

Answer 8

erosion

Question 9

A seizing or galling type of wear that rips and tears out portions of metal surface is called

Answer 9

metal to metal

Question 10

A squeezing type of wear usually caused by the imposition of a heavy static load on the surface of a metal is called

Answer 10

compression

Question 11

Which hardfacing material can be ferrous or non ferrous

Answer 11

chromium carbide

Question 12

These hardfacing materials alloyed with 5%-12% chromium are probably the most widely used

Answer 12

semi austenitic

Question 13

These hardfacing materials which are workhardened are well suited for impact loading

Answer 13

austenitic manganese

Question 14

For best results the deposits the deposits with these materials should be more or two layers thick

Answer 14

martensitic stainless steel

Question 15

Which material results in a deposit that is hard if cooled quickly or soft and tough if cooled slowly

Answer 15

heat treatable steels

Question 16

Which hardfacing material is used for sliding metal-to-metal contact and for corrosion resistance applications

Answer 16

copper alloys

Question 17

Which term describes the breaking away of the weld metal from the base metal

Answer 17

spalling

Question 18

What is one method you could use to avoid stress failure when hardfacing a part hardened by heat treatment

Answer 18

avoid interruptions during welding