2a) Welding Machine Adjustment

Question 0

How would you find the amperage for a electrode 1/8” mathematically

Answer 0

(Maximum amperage setting)Divide the top number by the bottom number, (minimum amperage setting) divide the top number by the bottom number then divide by 1.5
EX.) 1.000/8=.125 or 125 amps max
Min. 1.000/8=.125 divide by 1.5 = .083 or 83 amps

Question 1

What can be determined mathematically

Answer 1

Amperage

Question 2

How far will you raise the electrode after the tapping method /scratching method

Answer 2

Raise instantly to 3/8” to 1/2” to preheat metal then lower to distance equal to diameter of electrode

Question 3

Short bead u hold the electrodes _ to _ in the direction of travel and __ degrees transverse

Answer 3

15 to 25 degrees; 90degrees

Question 4

How would u re melt a crater

Answer 4

Strike the arc 1/2” in front of the crater , then bring back to the crater and weld back through it

Question 5

Why is direct current used more likely

Answer 5

It’s flexible