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CWBi Acorn Red Seal Book 2 > Review Questions - Electrodes > Flashcards

Review Questions - Electrodes Flashcards

1
Q

What type of coating is an E4311?

  1. basic
  2. rutile
  3. cellulosic
  4. oxidizing
A

cellulosic

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2
Q

What does the third digit (E4918) of an SMAW electrode designation represent?

  1. alloy content
  2. yield strength
  3. flux type/polarity
  4. useable positions
A

useable positions

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3
Q

What does the last digit (ER49S-6) of a GMAW electrode designation represent?

  1. alloy content
  2. yield strength
  3. flux type/polarity
  4. useable positions
A

alloy content

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4
Q

The shielding gas compostion for semi-automatic welding is important because:

  1. the drive rolls wear out faster with argon mixes
  2. the strength and brittleness of the weld is affected
  3. the acetylene will clog up the gun liner
  4. the parts must be post-braze annealed
A

the strength and brittleness of the weld is affected

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5
Q

Submergered arc welding producedures always identify a flux/electrodes combination. Why?

  1. changing either flux of electrode affects weld properties
  2. changing either flux or electrode makes the designation longer
  3. changing either flux or electrode affects useable polarity
  4. changing either flux of electrode affects positions of useablity
A

changing either flux of electrode affects weld properties

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6
Q

how are stainless steel electrodes identified?

  1. by yield strength
  2. by tensile strength
  3. by corrosion resistance
  4. by alloy designation
A

by alloy designation

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7
Q

Which electrode can be used to check for polarity?

  1. E7018
  2. E4310
  3. 309
  4. E6011
A

E4310

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8
Q

Which electrode can be stored at 20%-70% relative humidity?

  1. 6013
  2. 6010
  3. 7018
  4. 7024
A

6010

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9
Q

Low hydrogen electrodes like 7018 should be stored at what temperature?

  1. 120°-150°C (248°-302°F)
  2. 40°-50°C (104°-122°F)
  3. 100°C (212°F)
  4. 260°-427°C (500°-800°F)
A

120°-150°C (248°-302°F)

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10
Q

Which type of electrode is designateds to be moisture resistant?

  1. 6013MR
  2. 309L
  3. E7018-R
  4. ER70S-2
A

E7018-R

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11
Q

What does the letter “T” designate in E308T1-1?

  1. tungsten alloyed
  2. tubular or flux-cored
  3. titanium electrode
  4. technical standards approved class 1
A

tubular or flux-cored

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12
Q

What is the cast of an electrode?

  1. distance an electrode travels before it is consumed
  2. protective coating used on bonded fluxes
  3. distance of a wire from a flat surface of an unrestrained loop of wire
  4. the diameter that a single loop of cut wire makes unrestrained on a flat surface
A

the diameter that a single loop of cut wire makes unrestrained on a flat surface

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13
Q

flux cored wires are classified into what two groups?

  1. self-shielded and flux coated
  2. external gas shielding and self-shielding
  3. metal cored/flux coated
  4. self-fluxing/self-shielding
A

external gas shielding and self-shielding

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14
Q

Which type of electrode is best suited for the joining of carbon and stainless steel?

  1. 309L
  2. 7018-CS
  3. 6011
  4. 7024
A

309L

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15
Q

What does the letter “S” represent in the following designation ER70S-2?

  1. silicone coated
  2. self-shielded
  3. solid wire
  4. stainless
A

solid wire

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CWBi Acorn Red Seal Book 2 (3 decks)

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