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Welding > Welding > Flashcards

Welding Flashcards

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Welding Inspection Basics flashcards
1
Q

when setting up the oxy-acy cutter, where do you stand when turning on the valves

A

off to the side, do not face it

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2
Q

what can turning on the oxygen suddenly do

A

make the regulator explode

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3
Q

when turning on the acytelene tank how far should you turn the valve

A

1/2 to 3/4

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4
Q

how do you purge the lines

A

turn on each valve on the torch one at a time for a few sec

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5
Q

when lighting the torch, how much should you turn the acytelene valve

A

about 1/8 to 1/4 on the valve, not opening enough will cause black soot floaters

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6
Q

what are the inner cones on the torch tip known as

A

the neutral flame

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7
Q

what is the formula for a begginer to achieve a good solid weld

A

joint prepparation and proper machine set up

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8
Q

what is SMAW

A

shielded metal arc welding/ stick

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9
Q

what is MIG

A

metal inert gas welding

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10
Q

what is FCAW

A

flux core arc welding

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11
Q

what is TIG

A

tungsten arc welding

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12
Q

what do arc welding machines consist of

A

grounding clamp

electrode clamp

welding rods/electrodes

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13
Q

which welding rods have deep penetration and work on dirty metal

A

6010 and 6011

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14
Q

which welding rods have medium penetration and works best on clean metal

A

6013 and 7018

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15
Q

which welding rod has medium penetration and needs a clean joint

A

7024

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16
Q

what do the first two # on a welding rod mean

A

the tensile strength per square inch of weld

17
Q

what is typical steel rated

A

A36

18
Q

how much tensile strength does A36 have

A

36,000 pounds

19
Q

what do the last two # on the welding rod mean

A

the flux/shielding, the higher the # the more shielding

20
Q

what are the steps to setting up a stick welding machine

A

selecting your rod

set the polarity according to manufactures recommendation

set the amperage to the recommendation

21
Q

what polarity do 6011 rods work with

A

both AC and DC

22
Q

where is MIG welding most commonly used

A

fabrication shops where production is high

23
Q

what protects the weld from air on MIG welders

A

gas, that comes through the tip

24
Q

what metal can be MIG welded

A

almost any metal

25
Q

what are the three most common metals welded with MIG

A

carbon

stainless

aluminum with a special feeder because it is very soft

26
Q

what was MIG called when it was first developed

A

GMA gas metal arc

27
Q

what is MIG also known as

A

GMAW gas metal arc welding

28
Q

what three things does MIG welding require

A

electricty to produce heat

an electrode to fill the joint

shield gas to protect from air

29
Q

what electrical current does MIG use

A

DC

30
Q

on the MIG the handle is the _____ side

A

positive

31
Q

what does the code mean on the MIG welding wire

A

ER: an electrode or filler rod that is used in either a wire feed or TIG welding

70: a min of 70,000 tensile strength

S: solid wire

6: the amount of dioxidizing and cleansing agent on the electrode

32
Q

what is the most common wire used for welding carbon steel

A

ER 70S-6

33
Q

what are the most common size of welding wire

A

.023

.030

.035

.045

34
Q

what are the three typical shielding gases for MIG

A

argon

carbon dioxide

helium

35
Q

what are some cons of MIG

A

wind is a major factor outdoors

always need a bottle of gas

needs a clean joint

36
Q

what are the most common welding techniques

A

circles

whipping

weaving

37
Q

what are the welding positions

A

flat/1G drag rod between 10 and 30%

horizontal/2G point rod upwards at a 45% angle

vertical/3G point rod at 45%

overhead/4G same as flat

Welding (1 decks)

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