202E/F review tests Flashcards by Shane Halbert

What would a properly prepared tungsten electrode for use with stainless steel tapered prep be?

A. 1 to 5 times diameter of electrode
B. 2 to 6 times diameter of electrode
C. 3 to 8 times diameter of electrode
D. 4 to 10 times diameter of electrode

B. 2 to 6 times diameter of electrode

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What is an alternative method instead of back purging stainless steel?

A. vee preparation
B. apply a flux
C. roll welding
D. high frequency (continuous)

B. apply a flux

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What would the recommended current values be, when welding Stainless Steel compared to mild steel?

A. considerably lower
B. marginally lower
C. the same
D. higher

A. considerably lower

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What is the suggested electrode inclination for GTAW?

A. 5 degrees to 20 degrees forehand
B. 5 degrees to 20 degrees backhand
C. 5 degrees to 30 degrees forehand
D. 5 degrees to 30 degrees backhand

C. 5 degrees to 30 degrees forehand

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Does stainless steel display higher distortion than mild steel when welding?

A. True
B. False

A. True

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Which element is added to Stainless Steel as a stabilizer?

A. niobium
B. chromium
C. carbon
D. nickel

A. niobium

(or titanium)

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Which of the following true stainless steels are magnetic?

A. 200 series
B. 300 series
C. 400 series
D. 500 series

C. 400 series

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What is the appropriate arc length for GTAW?

A. 1/8” (3mm)
B. 3/16” (4.8mm)
C. 1/4” (6mm)
D. tungsten should be as close as possible without touching

D. tungsten should be as close as possible without touching

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how is tensile strength increased in Austenitic Stainless Steels?

A. heating to 2000 degrees F and cooling slowly
B. heating to 2000 degrees F and quenching
C. cold working
D. stress relieving

C. cold working

(Tenstile strangth)

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Can stainless steel be cut satisfactorily using standard oxyfuel process?

A. True
B. False

B. False

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What would be the cause of Oxidation or “sugaring effect” on stainless steel welds?

A. insufficient heat
B. welding speed too fast
C. air contacting molten metal
D. excessive argon contacting root of weld

C. air contacting molten metal

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What is the proper gas flow rate for GTAW?

A. 10 CFH
B. 20 CFH
C. 30 CFH
D. enough to exclude the atmosphere from the weld.

D. enough to exclude the atmosphere from the weld.

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Which of the following electrodes could be used for GTAW Aluminum with AC high frequency?

A. EWCe-2
B. EWP
C. EWZr
D. All of the above

D. All of the above

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What is the electrode inclination for GTAW?

A. 0 o to 30 o backhand
B. 0 o to 30 o forehand
C. 5 o to 30 o backhand
D. 5 o to 30 o forehand

D. 5 o to 30 o forehand

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How would you describe a 2F weld?

A. flat fillet weld
B. horizontal fillet weld
C. 2” fillet weld
D. vertical fillet weld

B. horizontal fillet weld

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Which technique is recommended to perform a 2F weld on 1/8” (3mm) aluminum with GTAW?

A. dip technique
B. continous feed technique
C. fuse with no filler
D. all of the above

A. dip technique

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What is the recommended progression for a vertical fillet weld on aluminum using GTAW?

A. uphill
B. downhill
C. backhand
D. all of the above

A. uphill

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How would you describe a 1F weld?

A. 1” fillet weld
B. flat fillet weld
C. horizontal fillet weld
D. vertical fillet weld

B. flat fillet weld

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How are Austenitic Stainless Steels annealed?

A. heating to 2000 degrees F and cooling slowly
B. heating to 2000 degrees F and quenching
C. cold working
D. stress relieving

B. heating to 2000 degrees F and quenching

(ANNEALED)

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What is the minimum amount of chromium that must be added to iron in order to make stainless steel?

A. 10%
B. 11 1/2%
C. 12 1/2%
D. 18%

A. 10%

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Which gas would be suitable for backpurging stainless steel?

A. argon
B. carbon dioxide
C. nitrogen
D. all of the above

A. argon

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Which element may be added to stainless steel in place of nickel?

A. manganese
B. chromium
C. molybdenum
D. tungsten

A. manganese

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What is a steel which contain less than 10% chromium called?

A. nickel steels
B. carbon steels
C. chrome steels
D. moly steels

C. chrome steels

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what would be the cause of Oxidation or sugaring effect on stainless steel welds?

A. moisture in shielding gas
B. excessive heat input
C. air contacting molten molten metal
D. low shielding gas flow

C. air contacting molten molten metal

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how are autogenous welds preformed A. with filler metal B. with out the addition of a filler metal C. using a Flux coated electrode D. by arc welding only

B. with out the addition of a filler metal

What is the suggested gas flow rate for GTAW Using argon? A. 5-10 CFH B. 20- 30 CFH C. 10 - 20 CFH D. 30- 40 CFH

C. 10 - 20 CFH

which element is added to stainless steel ass a stabilizer A. Niobium B. Vanadium C. Molybdenum D. Silicon

A. Niobium

which action is most effective in preventing carbide precipitation? A. Using thicker section B. increasing heat input C. minimizing the heat input D. Using coarse bead spacing

C. minimizing the heat inpu

what will nickel, When added to stainless steels, increase? A. corrosion resistance but decreased thermal conductivity B. machinability C. electrical resistivity D. Brittleness

A. corrosion resistance but decreased thermal conductivity

does stainless steel display high distortion than mild steel when welding ? A true B False

A true

what is the appropriate arc length for GTAW? A. long arc B. touching the tungsten C. 1-2 mm off the work D. tungsten should be as close as possible without touching

D. tungsten should be as close as possible without touching

which of the following are stabilizers used in stainless steel production? A. Chromium and nickel B. columbium and titanium C. manganese and sulfur D. Silicon and phosphorus

B. columbium and titanium

which of the following true stainless steels are magnetic? A. 200 series B. 300 series C. 400 series D. all of the above

C. 400 series

which of the following would control sugaring on stainless steel A. increasing gas flow B. purging back of weld C. Removing Slag D. increasing travel speed

B. purging back of weld

how does AISI classify stainless steel ? A. series, defined as 200 300 and 400 B. by carbon content C. By melting point D. BY hardness

A. series, defined as 200 300 and 400

when nickel is added to stainless steel which properties are increased? A. Corrosion resistance B. toughness C. ductility D. All off the above

D. All off the above

what happens with the addition of nickel to stainless steel? A. hardiness increases B. grain size decreases C. thermal conductive decreases D. all of the above are correct

D. all of the above are correct

which material is suitable for the GTAW torch nozzle when welding aluminum with AC HF? A. Ceramic B. Glass-ceramic C. Quarts D. all of the above

D. all of the above AS long as its no metal

what is the electrode inclination for GTAW? A. 0-5 backhand B. 5-30 backhand C.0-5 forehand D. 5-30 forehand

D. 5-30 forehand

what is the recommended progression for a vertical fillet weld on aluminum using GTAW? A. Uphill B. Downhill C. horizontal D. Oscillating

A. Uphill

which electrodes could be used for aluminum GTAW AC HF? A. 2% thoriated B. 2% ceriated C. 2% lanthanated D. all of the above

D. all of the above

what is the proper electrode extension for GTAW on aluminum? A. 1/16 B. 1/8 C. 3/16 D. all of the above

D. all of the above ( all flush to 1/4 inch )

which tungsten electrodes could be used for welding aluminum with GTAW? A. EWP B. EWCe-2 C. EWLa-2 D. all of the above

D. all of the above

which gas would be suitable for back purging stainless steel? A. argon B. Helium C. Nitrogen D. Oxygen

A. argon

what is the typical power source for GTAW stainless steel? A. DC - constant current B. AC- constant current C. DC -constant voltage D. AC -constant voltage

A. DC - constant current

which stainless steel series generally require pre/ post heat? A. 200 series B. 300 series C. 400 series D. all series

C. 400 series

minimum chromium needed to make stainless steel? A. 10% B. 12% C. 14% D. 16%

A. 10%

advantage of GTAW using flux-covered SS filler? A. Improved bead appearance B. may eliminate need for back-purge C. Lower heat input D. Higher deposition rate

B. may eliminate need for back-purge

what does a stainless steel weld that appears dark grey to black indicate? A. contamination B. lack of shielding gas C. improper filler D. Excessive heat

D. Excessive heat

what is the typical power source for GTAW stainless steel? A. direct current - constant current B. alternating current C. direct current D. pulsed DC

A. direct current - constant current

which AWS specification number specification steel welding electrodes and rode A. A 5.4 B. A5.15 C. A5.18 D. A5.9

D. A5.9

which series of stainless steels A. 100 B. 200 C. 400 D. 300

C. 400

how are austenitic stainless steels annealed? A. Air cooling B. heating to 2000F and queuing C. heating to 1000f band cooling D. furnace cooling

B. heating to 2000F and queuing

which element when added to stainless steel increases its resistance to creep? A. chromium B. nickel C. molybdenum D. vanadium

C. molybdenum

how are stainless steels identified? A. color code B. 3 digit number C. grade stamp D. manufacture

B. 3 digit number

what could be done as a quick check to identify an austenitic stainless steel? A. check if it is magnetic B. check with spark test C. measure density D. use hardness tester

A. check if it is magnetic

how should grinding lines on a properly prepared tungsten electrode run? A. circumferential B. longitudinal with electrode C. Random D. Diagonal

B. longitudinal with electrode

which temperature range does carbide precipitation occur? A. 100c to 300c B. 427c to 816c C. 900c t0 1100c D.50c to 100c

B. 427c to 816c (800F-1500F)

what is the non-consumable electrode preparation for welding stainless steel? A. rounded tip B. conical point C. flat end D. Split point

B. conical point

Which AWS specification number specifies filler metal for FCAW and flux cored for GTAW? A. A 5.10 B. A 5.20 C. A5.22 D. A5.30

C. A5.22

what is the maximum recommended material overlap for lap joints? A. 2x thickness B.1.5x thickness C. 3x thickness D. 1x thickness

D. 1x thickness

which process is not suitable for welding stainless steel? A. oxy acetylene (OAW) B. GTAW C. SMAW D. GMAW

A. oxy acetylene (OAW)

what is the preferred polarity for welding stainless steel with GTAW? A. DCEN B. DCEP C. AC D. pulse

A. DCEN

why is carbine precipitation detrimental to stainless steel? A. lowers corrosion resistance B. increase strength C. enhances toughness D. improves ductility

A. lowers corrosion resistance

when nickel is added to stainless steel what is increases? A. hardness B. toughness C. conductivity D. malleability

B. toughness

what is the minimum amount of chromium that must be added to iron in order to make steel? A. 10% B. 5% C. 15% D. 20%

A. 10%

which element may be added to stainless steel in plate of nickel? A. manganese B. chromium C. vanadium D. carbon

A. manganese

which is an appropriate filler metal for welding type 304 stainless steel? A. ER 309 B. ER 304 C. ER 308 D. ER 316

C. ER 308 ( one higher if there was an L L= low carbon

What is the most recommended technique to add filler metal when GTAW aluminum? A. push technique B. dip technique C. weave technique D. drag technique

B. dip technique

how would you describe a 3F weld? A. overhead fillet B. flat fillet C. vertical fillet D. horizontal fillet

C. vertical fillet

when GTAW aluminum with ac high Frequency (continuous ) which would be an acceptable electrode preparation? A. Sharpened tip B. flat tip C. balled end D. tapered end

C. balled end

what is the proper arc length for GTAW on aluminum? A. long arc B. medium arc C. touching arc D. short as possible without touching work

D. short as possible without touching work

which of the following is suitable for protecting backside molten metal when welding stainless steel? A. backing bar B. gas diffuser C. argon purge D. both A and C

D. both A and C

202E/F review tests Flashcards

review tests (73 cards)