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Flashcards in Welding Deck (37)
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1

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

off to the side, do not face it

2

what can turning on the oxygen suddenly do 

make the regulator explode

3

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

1/2 to 3/4

4

how do you purge the lines

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

5

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

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

6

what are the inner cones on the torch tip known as 

the neutral flame

7

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

joint prepparation and proper machine set up

8

what is SMAW

shielded metal arc welding/ stick 

9

what is MIG

metal inert gas welding

10

what is FCAW

flux core arc welding

11

what is TIG

tungsten arc welding

12

what do arc welding machines consist of 

grounding clamp

electrode clamp

welding rods/electrodes

13

which welding rods have deep penetration and work on dirty metal

6010 and 6011

14

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

6013 and 7018

15

which welding rod has medium penetration and needs a clean joint

7024

16

what do the first two # on a welding rod mean 

the tensile strength per square inch of weld

17

what is typical steel rated

A36

18

how much tensile strength does A36 have

36,000 pounds

19

what do the last two # on the welding rod mean

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

20

what are the steps to setting up a stick welding machine

selecting your rod

set the polarity according to manufactures recommendation

set the amperage to the recommendation

21

what polarity do 6011 rods work with 

both AC and DC

22

where is MIG welding most commonly used 

fabrication shops where production is high

23

what protects the weld from air on MIG welders

gas, that comes through the tip

24

what metal can be MIG welded

almost any metal

25

what are the three most common metals welded with MIG

carbon

stainless

aluminum with a special feeder because it is very soft

26

what was MIG called when it was first developed

GMA gas metal arc

27

what is MIG also known as

GMAW gas metal arc welding

28

what three things does MIG welding require

electricty to produce heat

an electrode to fill the joint

shield gas to protect from air

29

what electrical current does MIG use

DC

30

on the MIG the handle is the _____ side

positive