WorksheetsOXY ACETYLENE WELDING 1
Total questions: 11
Worksheet time: 6mins
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 colour is 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
