Oxy fuel cutting or oxy fuel welding are processes that use fuel gases and oxygen to weld and cut metals respectively. Pure oxygen is used to increase the flame temperature to allow localized melting of the work piece material in a room environment. A common propane/air flame burns at about 2000 degree Celsius, a propane/oxygen flame burns at about 2500 degree Celsius and acetylene/oxygen burns at about 3500 degree Celsius. In oxy-fuel cutting, a cutting torch is used to heat metal to kindling temperature. A stream of oxygen is then trained on the metal and metal burns in that oxygen and then flows out of the cut (kerf) as an oxide slag. Process requires Gas cylinders for oxygen and acetylene, gas regulators, gas hoses, non-return valve, torch. This can cut only mild steel.
Portable Shape Cutting Machine
This is a semi-automatic shape cutting machine which cuts any shape as per the template. The templates are of magnetic steel. The magnetized stylus moves on the vertical surface of the template and cuts the shape as per the contour of the template. Its portable hence convenient to use in the yard, field etc. It requires single phase power supply of 230 volts.
Portable Flame Cutting Machine
This is motorized portable flame cutting machine which moves on aluminium track of length. This can be also used for circle cutting by connecting to an attachment. Majority of flame cutting is done with this type of machine.