Oxygen Cutting

Oxygen cutting is to cut metal in the combustion of oxygen and removal of the jet stream formed oxides.

Oxygen cutting technology
Oxygen cutting process is shown in the figure below.

Oxygen cutting process

Cut metal is preheated warming up the flame torch, which is formed by the combustion of fuel gas in a mixture with oxygen. Upon reaching the ignition temperature of the metal in oxygen, the valve opens to the cutter pure oxygen (99-99.8%) and begins the process of cutting. Pure oxygen mouthpiece of the central canal, designed to cut metal oxidation and removal of oxides, referred to as cutting, unlike oxygen HEATING flame entering the mix with the fuel gas from the side channels mouthpiece.

The jet of cutting oxygen displaces a section of molten oxides, which, in turn, heated the next layer of metal, contributing to its intense oxidation, etc. As a result of cutting thickness is subjected to oxidation over the entire thickness, and the molten oxides are removed from the cutting zone under the action of the jet cutting of oxygen.

Oxygen Cutting Technique
The surface of the cut sheet should be cleaned of scale, paint, oil, rust and dirt. Particular attention is paid to clean the surface of a sheet of scale, since it prevents the contact of metal with a jet of flame and cutting oxygen. This requires a slight warming of the surface are warming up a flame torch, which resulted in the scale bounces off the surface. The heating should be carried out through a narrow strip of the proposed cuts, moving the flame at a rate corresponding to approximately the speed of cutting.

Before cutting the oxygen from the surface of the metal is heated to the starting point of cutting up to its ignition temperature in oxygen. After starting the cutting jet of oxygen and begin the process of oxidation of the metal sheet thickness of the cutter is moved along the line of cut.

As a rule, straight flame cutting of steel sheets up to 50 mm is performed first with the installation of the cutting nozzle orifice in a vertical position and then tilt in the opposite direction of cutting (usually 20-30 º). The slope of the cutting nozzle mouthpiece in the direction accelerates the oxidation of the metal and increases the rate of oxygen cutting, and, consequently, its performance. For thicker sheet metal cutter at the beginning of cutting tilted by 5 º in a direction opposite to the movement of cutting.

Cutting technology:

Oxygen Cutting Oxygen Flux Cutting Oxygen Lance Cutting Air-arc cutting

Oxy-arc Cutting Plasma Cutting Laser Cutting Waterjet Cutting