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Oxy-fuel cutting and oxy-fuel welding can be described as
the processes of using oxygen and fuel gases to either cut or weld metals.  There are some striking differences between
these two processes. In the first process, a cutting torch is made use of for
heating ferrous metal to a temperature of around 980 degree Celsius. An oxygen
stream is being trained on a hot metal that combines with iron chemically which
later flows from the kerfs, or cut in the form of slag of iron oxide. In the
second process, a ?welding torch’ is made use of for welding metals.

Torches that burn the inside fuel with air (atmosphere)
cannot be termed as oxy-fuel torches. They stand out owing to the use of single
tank. This is because oxy-fuel cutting/welding requires oxygen, fuel, and two
tanks. It’s not possible to melt some of the metals with single-tank torches.
Hence, these torches can be used for brazing and soldering, but not for
welding. A metal-cutting torch is better known as hot blue spanner, blue
wrench, hot wrench, smoke wrench, and gas-axe.

Types of Torches: The
torch can be defined as the part held and manipulated by the welder to get the
weld made. It possesses a valve and connection for oxygen and the same things
for fuel gas, a handle to obtain the grip, an integrating chamber (angularly
set) where there occurs a mixing of oxygen and fuel gas, with a tip where
formation of flame takes place. The fuel gases used along with oxygen include
propylene, propane, hydrogen gas, MAPP gas, Liquefied Petroleum Gas (LPG), and
the most widely used is acetylene. 

Injector Torch: It
can be defined as an archetypal oxy-fuel torch, also known as an equal-pressure
torch. It carries out the mixing of mere two gases. The injector torch operates
in such a way that high pressure oxygen comes out of the tiny nozzle present in
the torch head, and the fuel gas gets dragged towards it via the venturi
effect.

Rose-bud Torch:
The use of this torch is to carry out the heating of metals for
straightening, bending, etc. It is generally used where a huge area requires
heating. It produces a rose-bud shaped flame at the end, hence the name. This
torch can carry out the function of heating small areas like rusted bolts and
nuts as well. However, here, filler rod won’t be used with torch.

Cutting Torch:
The head of the cutting torch is used for cutting metal. Its identification
details are as follows: The inside of the torch consists of a combination of
oxygen and acetylene. It helps in producing flame of a high temperature. It
consists of 3 pipes going to a nozzle at 90 degree. It also contains an
oxygen-blast trigger which blasts away the material during its cutting by the
way of providing oxygen.

Welding Torch:
The welding torch consists of either 1 or 2 pipes running towards the
nozzle without oxygen-blast trigger. As the name suggests , it performs the
function of welding.

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Tags: acetylene, archetypal, cutting torch, degree celsius, fuel gas, fuel gases, hot metal, hydrogen gas, iron oxide, lpg, petroleum gas, pressure oxygen, propane, propylene, striking differences, torches, two tanks, weld metals, welder, welding torch

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