Week 2

Question 1

Type of current usually used for TIG on aluminum?

Answer 1

A.C (alternating current)

Question 2

A separation at the joint root between the work pieces?

Answer 2

Root opening

Question 3

What are 4 weld positions?

Answer 3

Flat, Horizontal, Vertical and?
Overhead

Question 4

What does A.W.S stand for?

Answer 4

American Welding Society

Question 5

Ratio of Duty cycle is ___ time and ___ time?

Answer 5

Arc; Total

Question 6

Welding is a safe occupation if proper precautionary measures are always?

Answer 6

Observed

Question 7

Wearing proper eye protection while welding prevents?

Answer 7

Arc flash

Question 8

To Prevent illness due to over exposure to hazardous materials from the fume plume you should avoid?

Answer 8

Breathing the Fumes

Question 9

When welding on exotic metals, use?

Answer 9

Mechanical exhaust

Question 10

When the electrode holder is not in use, hang it in the gas cylinders true or false?

Answer 10

False ( hang in the bracket)

Question 11

Shield others from _____ causing arc flash while welding.

Answer 11

Ultra violet rays

Question 12

Correct undercutting by ___ at each side of the weld.

Answer 12

Pausing

Question 13

Slang terms for SMAW

Answer 13

stick welding

Question 14

Negative electrode to positive work piece?

Answer 14

DCEP (straight polarity welding)

Question 15

In all welding a weld pool must be protected from contamination by the atmosphere in the welding process. This is accomplished by either gasses produced by ___ or in the electrode at it is consumed by shielding ___ introduced in the arc.

Answer 15

Coating, gas

Question 16

What are the disadvantages of FCAW. Is the require of ___ removal and ___cleaning

Answer 16

slag, weld

Question 17

In the welding shop you should assume that _____?

Answer 17

All work and tools are hot

Question 18

Electric arc process that produces coalescence of metals by heating them with an arc between a continuous filler metal electrode and the work piece?

Answer 18

GMAW (gas metal arc welding)

Question 19

Type of welding that normally uses direct current electrode positive?

Answer 19

GMAW

Question 20

The _____ drives the electrode wire from the wire spool through the cable and gun to the welding arc.

Answer 20

Wire feeder

Question 21

The push system is designed to push wire through the wire?

Answer 21

Push Wire conduit (liner)

Question 22

What system displaces air around arc to prevent contamination of the molten pool by oxygen and nitrogen in the atmosphere?

Answer 22

Shield gas system

Question 23

Two gases aided for mild/low alloy steel

Answer 23

co2 25% argon 75%

Question 24

Steel wires normally have thin ___ wire to improve electrical pick up and protect the wire from oxidation?

Answer 24

Copper

Question 25

FCAW can be used in either D.C.E.N and D.C.E.P current true or false?

Answer 25

True

Question 26

In the FCAW process the shielding of the weld is provided by a ____ ?

Answer 26

Flux Cord

Question 27

In GTAW the tungsten electrode is only use to produce ___ which creates a puddle in the base metal

Answer 27

Arc

Question 28

Three things TIG welder must control?

Answer 28

Torch position Filler rod depositing Speed of travel

Question 29

In G.T.A.W, what are the two most common shielding gases. One is Argon and the other _____?

Answer 29

Helium

Question 30

Two great qualities tungsten is used for.

Answer 30

High melting point Excellent electrical conductor

Question 31

Ferrous and nonferrous can be cut by plasma process?

Answer 31

true

Question 32

Reverse polarity is not generally use in TIG welding because it can ___ the tungsten electrode.

Answer 32

Melt

Question 33

Plasma arc cutting is a ____cutting process.

Answer 33

Thermal

Question 34

Air carbon arc cutting is commonly used in?

Answer 34

Gouging and cutting

Question 35

The application of heat to the base metal immediately ____ welding, brazing, soldering, thermal spraying or cutting

Answer 35

Before

Question 36

Welding should or should not be done when the ambient temperature is below 0 degrees Fahrenheit?

Answer 36

Should not

Question 37

A TIG welding torch head can only be cooled with water true or false?

Answer 37

False (air too)

Question 38

Before a welder can begin work on any job, they must be?

Answer 38

Certified

Question 39

If the welder uses different process or if the welding procedure is drastically altered?

Answer 39

Re-qualification is required

Question 40

What is the most widely used and most popular weld inspection?

Answer 40

Visual

Question 41

A liquid dye penetration kit is destructive method is used to find minute discontinuities flaws in a weld?

Answer 41

False

Question 42

When gas cylinders are empty, close the valve and mark cylinder?

Answer 42

Empty

Question 43

What kind of electrode is E6010?

Answer 43

Coated electrode for S.M.A.W that has 60000 P.S.I “1” Can be welded in any position on carbon steel. “0” means manufacturer characteristics.

Question 44

What kind is ER70S-6

Answer 44

Electrode is a solid wire that can be used as filler rod in G.M.A.W and G.T.A.W 70000 P.S.I The “6” is wire chemistry

Question 45

What kind is ER316L?

Answer 45

316 stainless steel Electrode Rod or wire that can be filler metal in G.M.A.W or G.TA.W L means low carbon

Question 46

What kind is E71T-1?

Answer 46

Flux cored electrode that cannot be used as filler metal. Used in F.C.AW. 70000 P.S.I “1”means it can be welded in all positions “T” means it is tubular. “-1” identifies as self shielded. Used on carbon steel

Question 47

8 Ways to control distortion

Answer 47

Use clamps so there is no movement in weld Use braces to prevent movement Do not over heat weldment Use small amount of bevel angle Weld in the same direction Use chill bars Do not over weld Use LG diameter rod so use small amount of weld passes

Question 48

Vocabulary words

Answer 48

L.K.D.Q.E.M.F.A.N.I.C.H