P9-1

Front 1

The sliding scraping, type of wear that removes metal by gouging or grinding is called

Back 1

ABRASION

Front 2

A pounding battering type of wear that splits breaks chips mushrooms or otherwise deforms a metal surface is called

Back 2

Impact wear

Front 3

Which hardfacing material is the most abrasion-resistant

Back 3

TUNGSTEN CARBIDE

Front 4

To reduce spalling, cracking and Distortion you must control

Back 4

the cooling rate

Front 5

The following refers to the breaking away of weld metal particles from the base metal or underlying hard surfacing layers

Back 5

SPALLING

Front 6

an effective way to slow the cooling rate is by

Back 6

preheating

Front 7

A method for relieving internal stresses especially in large parts, is by each layer during Cooling

Back 7

peening

Front 8

Which of the following hardsurfacing electrodes is a ferreus based chromium carbide alloy

Back 8

EFeCr-A1

Front 9

Which of the following hardsurfacing electrodes is a Tungsten Carbide alloy

Back 9

EWC-20/30

Front 10

Which of the following hard surfacing electrodes is a nickel-based alloy

Back 10

ENiCr-A

Front 11

one way to control dilution is to

Back 11

use low current settings

Front 12

Which hard surfacing pattern is suited to resisting impact wear

Back 12

dot pattern

Front 13

Which hardsurfacing pattern projects the base metal by trapping dirt and sand

Back 13

waffle pattern

Front 14

solid build-up is often used on

Back 14

latch pins

Front 15

Which hardsurfacing material combines good impact resistance with good abrasion resistance and is work hardenable

Back 15

austenitic manganese steels

Front 16

Which hardsurfacing material is especially good at resistance corrosive wear and is a good choice for Lime Kiln augurs

Back 16

non-ferrous chromium carbides

Front 17

Which one of the following occurs when welding current is increased

Back 17

Increased penetration

Front 18

Generally the smaller the diameter of the filler wire the

Back 18

Greater the depth of penetration

Front 19

Which one of the following is the result of increasing wire-feed speed with a constant voltage setup

Back 19

higher deposition rate

Front 20

With increases in voltage the weld bead becomes

Back 20

flatter and wider

Front 21

With increases in wire feed speed the weld becomes

Back 21

larger over all

Front 22

With increases in travel speed the weld bead becomes

Back 22

Smaller over all

Front 23

Excessive weld currents can lead to

Back 23

burn-through

Front 24

as a primary variable, arc voltage is important in adjusting the

Back 24

shape of the bead

Front 25

Back 25

-

Front 26

Back 26

pushing technique

Front 27

Which one of the following is an essential precaution against electrical shock

Back 27

Ensure the workpiece is grounded to a good electrical ground

Front 28

Identify the toxic gas created when carbon dioxide is subjected to the heat of the arc

Back 28

Carbon monoxide

Front 29

For all grinding operations you must wear safety glasses and

Back 29

A face shield

Front 30

Which toxic gas is produced when cleaning fluids such as chlorinated hydrocarbons are exposed to the ultraviolet radiation of the arc

Back 30

phosgene

Front 31

What kind of Footwear is required in the welding shop

Back 31

leather work boots

Front 32

Combustible materials that cannot be removed from the area where you must weld should be

Back 32

Effectively screened from the welding area

Front 33

When you inspect welding cables before welding and find breaks in the insulation you should

Back 33

Repair the cables with the proper tape

Front 34

When your welding machine is on but you have finished welding you should always

Back 34

Make sure no part of the electrode circuit is touching the work or ground