Steel cutting refers to the process of cutting and processing steel structures as needed in industrial production. It generally refers to the process of melting, blowing slag, and dividing steel structures by mixing industrial gas and oxygen for combustion and reaching the required cutting temperature.
The current technologies used include flame cutting, water cutting, plasma cutting, CNC cutting, etc. The commonly used cutting technique is flame cutting, which has the characteristics of low cost, easy operation, mature technology, and wide use. It is currently widely used in industry. Flame cutting refers to the process of using industrial natural gas and oxygen to mix and burn the flame to heat the metal being cut to the melting point of the steel, and then releasing high-pressure oxygen flow to further oxidize the metal violently and blow off the slag produced by combustion to form a cut.
Flame cutting: Flame cutting is a widely used cutting technique that mainly uses a mixture of gas and oxygen to burn and produce high temperatures, oxidizing and melting steel to achieve the purpose of cutting. The gases used include natural gas, acetylene, propane, etc. Acetylene has been explicitly phased out by the state, while natural gas and propane are new types of gas technology that require the addition of a refining agent. After refining and activation, the cutting purpose can be achieved.
Water cutting: It is a newly developed cutting technology in recent years that uses high-pressure water jets to cut steel plates. It has advanced technology and high cutting accuracy, and is suitable for cutting thin, medium thickness, and high-precision steel plates. The disadvantage is high cost, and general industrial cutting does not require high-precision cutting, so it is not suitable for ordinary industrial cutting.
Plasma arc cutting: It is a machining method that uses the heat of a high-temperature plasma arc to locally melt (and evaporate) the metal at the cutting edge of a workpiece, and uses the momentum of high-speed plasma to remove the molten metal to form a cutting edge.
Plasma cutting combined with different working gases can cut various metals that are difficult to cut with oxygen, especially for non-ferrous metals (stainless steel, aluminum, copper, titanium, nickel), the cutting effect is better; Its main advantage is that when cutting metals with small thickness, plasma cutting speed is fast, especially when cutting ordinary carbon steel thin plates, the speed can reach 5-6 times that of oxygen cutting method, the cutting surface is smooth, the thermal deformation is small, and there is almost no heat affected zone.
