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What is the principle of gas cutting?

What is the principle of gas cutting?

In gas cutting a flame of fuel gas such as acetylene burning in oxygen heats the area to be cut; a stream of oxygen is then injected around the flame which actually burns the steel and ejects the oxide as dross.

What are the types of gas cutting?

There are five main types of gas that are regularly used to perform gas cutting processes – natural gas, MAPP, acetylene, propylene and propane.

Why oxygen is used in gas cutting?

A jet of pure oxygen is then directed into the preheated area instigating a vigorous exothermic chemical reaction between the oxygen and the metal to form iron oxide or slag. The oxygen jet blows away the slag enabling the jet to pierce through the material and continue to cut through the material.

What is the 1 7 rule?

Example: An acetylene cylinder that has a capacity of 330 cubic feet has maximum withdrawal rate of 47 cubic feet. This is determined by dividing 330 cubic feet (represents cylinder capacity) by 7 (represents 1/7 cylinder capacity).

Which flame is used for gas cutting?

neutral flame
The neutral flame is the flame most generally used when welding or cutting. The welder uses the neutral flame as the starting point for all other flame adjustments because it is so easily defined.

What are the 2 main types of cutting nozzles?

» Cutting nozzles for Acetylene are known as ANM nozzles while cutting nozzles for LPG are known as PNM nozzles.

What are gas cutting tools?

Gas cutting torches – It is used in oxy-fuel cutting to heat the metal at its ambient temperature. This gas cutting torches use gases like acetylene, propane, propylene and natural gas. The welding torch is a heat source for manual brazing and braze welding and metal forming and welding.

Can you transport oxygen and acetylene together?

Acetylene cylinders and oxygen cylinders both have their own unique risks and hazards, and MUST NEVER be stored together as they can react dangerously with one another.

What is draw limit for acetylene?

Acetylene is limited to a maximum continuous withdrawal rate of 1/7 of the cylinder’s rated capacity when full. Example: An acetylene cylinder that has a capacity of 330 cubic feet has maximum withdrawal rate of 47 cubic feet.

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