T - Welding to Hydrogen Welding

Question 1

Most important PERMANENT joining methods. FUSION of separate parts which are locally melted.

Answer 1

WELDING

Question 2

HAZ

Answer 2

Heat Affected Zone

Question 3

Types of joints in welding

Answer 3

BUTT
CORNER
EDGE
TEE
LAP

Question 4

What must be cut, usually by grinding, to achieve a successful Butt joint?

Answer 4

VEE-GROOVE (notch)

Question 5

One run of WELDING forms a…

Answer 5

BEAD

Question 6

WELDING is based on 3 factors:

Answer 6

HEAT SOURCE
FILLER
OXIDATION CONTROL

Question 7

Simplest type of welding …

Answer 7

OXY-FUEL GAS WELDING

Question 8

Two gases used in OXY-FUEL GAS WELDING

Answer 8

ACETYLENE
OXYGEN

Question 9

Welding flame which has excess of Acetylene and is used for ALLOY STEEL and ALUMINUM

Answer 9

Carburizing/Reducing

Question 10

Welding flame with equal amounts of the two gases and is used for LOW CARBON STEEL and MILD STEEL

Answer 10

Neutral Flame

Question 11

Welding flame which has an excess of OXYGEN and is used for BRASS, BRONZE and COPPER

Answer 11

Oxidizing Flame

Question 12

Provides a source of additional molten metal from which to build up the welding bead.

Answer 12

FILLER ROD

Question 13

Advantages of OXI-FUEL GAS WELDING

Answer 13

Simple Inexpensive equipment
Les bulky PPE
Easy cleanup

Question 14

Welding which derives its heat from an electrical discharge (arc) between the electrode and the workpiece

Answer 14

ARC WELDING

Question 15

Most basic type of ARC WELDING

Answer 15

STICK WELDING

Question 16

STICK WELDING is also known as SMAW

Answer 16

Shielded Metal Arc Welding

Question 17

Used as the electrode in ARC WELDING, which also fulfills the function of a filler rod in oxy fuel welding.

Answer 17

WELDING ROD

Question 18

Welding rods are coated in a brittle ceramic substance called a

Answer 18

FLUX

Question 19

Types of FLUX for WELDING RODS

Answer 19

Basic-made from calcium carbonate, calcium fluoride, magnesium carbonate
Rutile-made from titanium
Cellulose

Question 20

MIG welding

Answer 20

Metal Inert Gas Welding

Question 21

GMAW

Answer 21

Gas Metal Arc Welding

Question 22

MIG WELDING uses a motor to feed wire through the holder at a fixed rate, also known as…

Answer 22

GUN

Question 23

MIG WELDING floods the weld pool with inert gas (shielding gas) to replace the need of a flux, such as

Answer 23

ARGON
HELIUM
CARBON DIOXIDE

Question 24

In MIG WELDING, what allows the operator to electrically connect/disconnect the wire electrode, and activate the wire feed?

Answer 24

TRIGGER

Question 25

Replacement for SHIELDING GAS, which does not need gas, but requires cleanup

Answer 25

FLUX CORED WIRE

Question 26

Automated MIG WELDING process performed specifically on vertical surfaces

Answer 26

ELECTROGAS WELDING (EGW)

Question 27

TIG

Answer 27

Tungsten Inert Gas

Question 28

GTAW

Answer 28

Gas Tungsten Arc Welding

Question 29

Non consumable electrodes are made of tungsten and are used in

Answer 29

TIG AND GTAW

Question 30

TIG is used for the following metals

Answer 30

Stainless Steel
Aluminium “Sapphire”

Question 31

PAW

Answer 31

Plasma Arc Welding
Tungsten electrode tip terminates inside the gun above a narrow copper nozzle. Uses shielding gas.

Question 32

AHW

Answer 32

Atomic Hydrogen Welding
Specialized arc welding process, the arc is struck between two adjacent electrodes in the gun head