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Manufactoring > Welding > Flashcards

Welding Flashcards

1
Q

what is welding

A

a joining process between 2 or more parts become 1 at the contact surface

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2
Q

what are the limitations of welding

A

most operations are preformed manually
ustlilize high energy/ dangeourous
causes permanent bonds
can have defects that are difficult to detect
need to be cleaned well to get good welds

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3
Q

what are some of the ways welding can be dangerous

A

high tempurature of metals
feuls are a fire/explosion hazard
electriclal shock
UV radiation emitted in arc welding is harmful

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4
Q

what are the 5 types of welded joints

A

butt
corner
lap
tee
edgeq

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5
Q

what is fillet welds

A

the most common type in arc/oxyfeul welding

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6
Q

what are groove welds

A

welds that require edges of the parts to be shaped into a groove

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7
Q

what are plug/slot welds used for

A

filling holes/slots in the top plate

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8
Q

what are the 2 types of welding processes

A

fusion
solid state

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9
Q

what are the parts of a fusion weld

A

fusion zone
weld interference
heat affected zone

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10
Q

what is arc welding

A

coalesence of material sis achieved by the heat from an arc between an electrode and the peice

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11
Q

what are the 2 types of arc welding electrodes

A

consumable
non conconsumabel

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12
Q

what is the diference between a consumable / non consumable electrode

A

consumed- a sourse of filler
non consumable- filler metal must be added sepretly

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13
Q

what is flux

A

a substance that prevents formation of oxides and other contaminates

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14
Q

What is Sheilded Metal Arc Welding (SMAW)

A

uses consumable electrode
also called stick welding

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15
Q

What is Gas Metal Arc Welding (GMAW)

A

uses consumable barw metal wire as an electrode
known as Metal inert Gas

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16
Q

what is Gas Tungsten Arc Welding (GTAW

A

uses non consumaable tungsten welding
also called tig welding

17
Q

Whats is Resistance welding

A

a process that uses the combination of heat and pressure to accomplish coalescencse

18
Q

What is resistance Spot welding (RSW)

A

fusion of a lap joint is acheived using opposing electrodes

19
Q

what is Resistance seam welding (RSEW)

A

similar to spot welding but the rod shaped electrodes are replaced with rotating wheels

20
Q

What is Oxyfeul Gas Welding (OFW)

A

burns various feuls mixed with oxygen

21
Q

what is oxyacetylene weldingg (OAW) a

A

uses a high temprature flame from the combustion of acetylene and oxygen to preform welding

22
Q

What is Solid state welding (SSW)

A

coalsencse of part surfaces os acheived by pressure alone using diffusion to bond the material

23
Q

what are the 8 types of solid state welding

A

forge
cold
roll
hot pressure
diffusion
explosion
frictuon
ultrasonic

24
Q

what is forge welding

A

components joined by being heated to their hot working tempurature then forged together by hammering

25
Q

what is cold weling

A

applying high pressure between ckean contacting surfaces at room teempurature

26
Q

what is roll welding

A

coalsense is applied by means of rolls either with or without external heat

27
Q

what is explosion welding

A

used to bond to disimilar metals

28
Q

what is friction welding

A

coalesense achieved by frictional heat combined with pressure

29
Q

what is ultrasonic welding

A

components are held together under a modest clamping force and ultrasonic frequency is applied

30
Q

what are the 8 types of welding defects

A

cracks
porosity
undercut
slag inclusion
overlap
incomplete fusion
incomplete penetration
splatter

31
Q

what are the 3 types of inpection for welds

A

visual
non destructive
destructive

32
Q

what is visual testing for welding

A

examiner looks at weld and can only detect surface cracks

33
Q

what are some types of nondestructive testing methods/what can they detect

A

dye penetrent- surface cracks/cavities
magnetic particle testing- can only test on ferrous parts
ultrasonic testing-defecrs detected by loss of sound transmission
radiographic testing-uses x-rays to detect flaws

34
Q

whaat ate some tpes of destructive testing

A

mechnical tests (tensile/shear)
metallurgical

35
Q

what are the factors that effect weldability

A

welding process
base metal properties
filler metal
surface condidtion

Manufactoring (9 decks)

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