Oxy Fuel Welding

Question 1

What is the size range of filler metal?

Answer 1

1.6 - 5mm OR 1/16” - 3/16

Question 2

How are welding tips measured?

Answer 2

By orifice diameter

Question 3

Do all tip sizes produce the same flame temperature?

Answer 3

Yes

Question 4

What range of numbers is used to denote tip size?

Answer 4

000 - 10

Question 5

T/F: A larger tip is needed for non-ferrous metals.

Answer 5

True

Question 6

What are 7 things you can find on a box of filler wire?

Answer 6

1. trade name
2. classification number
3. manufacturer name
4. rod diameter
5. rod length
6. lot number
7. WHMIS label

Question 7

What metals require flux?

Answer 7

Cast iron, stainless steel, aluminum, magnesium

Question 8

What does the code R45 mean?

Answer 8

R = welding rod
45 = min. tensile strength in ksi

Question 9

Which rod does this describe:
Smooth, shiny bead, low strength ductile welds.

Answer 9

R45

Question 10

Which rod does this describe:
Most widely used rod. Used on low alloy steels that require good strength and ductility.

Answer 10

R60

Question 11

Which rod does this describe:
HSLA, corrosion resistant, rough appearance.

Answer 11

R65

Question 12

Which rod does this describe:
High carbon levels. Produces high strength welds.

Answer 12

R100

Question 13

What length are most filler rods?

Answer 13

36”

Question 14

List 6 fusion welding factors.

Answer 14

1. torch tip size
2. flame setting
3. flame to work distance
4. welding technique
5. torch angle
6. travel speed

Question 15

What are the 3 flame types?

Answer 15

1. neutral
2. oxidizing
3. carburizing

Question 16

How far should the tip of the inner cone be held above the metal?

Answer 16

1.6 - 3.2mm OR 1/16” - 3/16”