WorksheetsGas welding
Total questions: 21
Worksheet time: 11mins
to ignite the flame on Oxy Acetylene Gas Welding, I must first..
switch on Oxygen Gas
switch on both Acetylene and Oxygen Gas
switch on Acetylene Gas
switch on either Oxygen Gas or Acetylene Gas, it doesn't matter
When first switching on Oxy Acetylene Gas Welding, add Acetylene gas until..
smoke appears from the flame
cone is seen at the tip
smoke is minimal and flame is feathered
flame turns blue
What are the different Flames in Oxy Acetylene Gas Welding?
Natural Flame
Oxidising Flame
Reducing / Carburising Flame
Oxygen Flame
Neutral Flame
What is the mixture of Neutral Flame?
Oxygen > Acetylene
Oxygen = Acetylene
Oxygen < Acetylene
Oxygen Only
If the cone is SHARP and the torch is NOISY, it is..
Reducing Flame
Carburising Flame
Neutral Flame
Oxidising Flame
OXYGEN GAS is a power gas, because..
It is flammable
It controls the strength of the flame
it is colourless and non flammable
It is strong
Why do we use Neutral Flame in Gas welding?
Because it is quiet and easy to work with
Because it is the cleanest and the hottest flame
Because the cone is sharp
Because Neutral Flame is unstable
When switching off Oxy Acetylene Gas Welding, I must..
swtich off Oxygen first, then Acetylene Gas
switch off Acetylene First, then Oxygen Gas
switch off both gases at the same time
switch off the regulator
When shutting down the system, why must we switch off Acetylene Gas first?
So that Oxygen can clean the nozzle tip
Because Acetylene is an expensive gas
So that fire doesn't go inside and down the torch
Because Oxygen is Flammable
What color is the acetylene gas cylinder?
Black
Silver
Maroon / Red
Blue
Why do we need a Regulator on the Gas Cylinder?
To make sure no gas leaks from the cylinder
To regulate the pressure of gas released from the cylinder
To prevent gas from flowing backwards back into the cylinder
To regulate the temperature of the Gases
What is Molten Pool?
Welding term for smoke
A type of welding equipment
Melted metal when welding is made
Something that happens when the metal is too hot
Molten pool is also known as?
Paddle
Weld Pool
Puddled Weld
Welding Pod
which type of bead is used to manipulate the molten pool in oxy-acetylene gas welding?
V weave
C weave
Circular Weave
Figure 8
what is the causes of throwing off sparks in gas welding?
There is fuel in the molten pool
The molten pool is too small
Too much Acetylene in the flame
Oxidation is happening
Oxidation in welding will make the weld,
Strong
Weak and brittle
Bend
Unstable
What is the distance between the flame and the metal piece?
1mm - 2mm
2mm - 4mm
3mm - 5mm
4mm - 5mm
what is the recommended angle of the torch during welding?
30º - 40º
60º - 70º
45º
80º - 90º
what is the recommended angle of the filler rod during welding?
30º - 40º
60º - 70º
45º
80º - 90º
What is the correct flame color for a neutral flame in gas welding?
Yellow
Blue
Red
Green
What is the main advantage of oxy acetylene welding equipment?
It is versatile and can cut, gouge, weld, and braze metal
It can only weld metal
It is only used for heating metal
It can only cut metal
