Gas cutting technology for metal, using a gas cutter

Gas metal cutting technology involves heating the cutting part and cutting it. The gas cutting torch tip has three nozzles that provide heating and oxygen for cutting. Modern torches can deliver oxygen at a pressure of 12 atmospheres, significantly facilitating rapid metal cutting.

Gas cutting technology produces cleaner welds than electric cutting, and it can be enhanced with the use of weld guards, which further enhance the finish. The operator controls the guide torch, and the gas supply is regulated by two valves, or, in some models, a single valve. The torch is directed toward the cutting line and heated to the ignition temperature of the metal in oxygen, removing oxides in a jet.

Gas cutting technology can be severing or surface cutting. Severing is used for cutting out various workpieces, such as metal sizing, beveling weld edges, and other metal cutting operations. Surface cutting is used when it's necessary to remove a specific surface area of the metal, create a groove, remove surface defects, and so on. Special cutters are used for this purpose, which treat the surface. Before this type of cutting, the metal surface must be thoroughly cleaned of oil, dirt, etc.

Gas cutting technology takes into account the thickness of the metal being cut, as well as the purity of the oxygen. Oxygen purity reduces its pressure and consumption. Cutting high-carbon steel impairs the processing of cutting edges, as they become hard and brittle. Low carbon steel It does not undergo significant structural changes, allowing it to be easily processed after gas cutting.

The technology of gas cutting of non-ferrous metals, their alloys, chromium steels, includes oxygen-flux cuttingTo cut thick steel, propane, hydrogen, and natural gas are used. When burned, they increase the flame length, allowing for a deep cut. A large flame is used to cut metal thicknesses from 800 to 1200 mm, as well as reinforced concrete slabs and piles. Oxygen is supplied through a steel tube at a pressure of 5-15 kgf/cm².